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ce887677 | 1 | <?xml version="1.0" encoding="utf-8"?> |
89365653 | 2 | <database title="Open vSwitch Configuration Database"> |
c5f341ab BP |
3 | <p> |
4 | A database with this schema holds the configuration for one Open | |
5 | vSwitch daemon. The top-level configuration for the daemon is the | |
6 | <ref table="Open_vSwitch"/> table, which must have exactly one | |
89365653 | 7 | record. Records in other tables are significant only when they |
c5f341ab BP |
8 | can be reached directly or indirectly from the <ref |
9 | table="Open_vSwitch"/> table. Records that are not reachable from | |
10 | the <ref table="Open_vSwitch"/> table are automatically deleted | |
11 | from the database, except for records in a few distinguished | |
3fd8d445 | 12 | ``root set'' tables. |
c5f341ab | 13 | </p> |
89365653 | 14 | |
3fd8d445 BP |
15 | <h2>Common Columns</h2> |
16 | ||
17 | <p> | |
18 | Most tables contain two special columns, named <code>other_config</code> | |
19 | and <code>external_ids</code>. These columns have the same form and | |
20 | purpose each place that they appear, so we describe them here to save space | |
21 | later. | |
22 | </p> | |
23 | ||
24 | <dl> | |
25 | <dt><code>other_config</code>: map of string-string pairs</dt> | |
26 | <dd> | |
27 | <p> | |
28 | Key-value pairs for configuring rarely used features. Supported keys, | |
29 | along with the forms taken by their values, are documented individually | |
30 | for each table. | |
31 | </p> | |
32 | <p> | |
33 | A few tables do not have <code>other_config</code> columns because no | |
34 | key-value pairs have yet been defined for them. | |
35 | </p> | |
36 | </dd> | |
37 | ||
38 | <dt><code>external_ids</code>: map of string-string pairs</dt> | |
39 | <dd> | |
40 | Key-value pairs for use by external frameworks that integrate with Open | |
41 | vSwitch, rather than by Open vSwitch itself. System integrators should | |
42 | either use the Open vSwitch development mailing list to coordinate on | |
43 | common key-value definitions, or choose key names that are likely to be | |
44 | unique. In some cases, where key-value pairs have been defined that are | |
45 | likely to be widely useful, they are documented individually for each | |
46 | table. | |
47 | </dd> | |
48 | </dl> | |
49 | ||
89365653 | 50 | <table name="Open_vSwitch" title="Open vSwitch configuration."> |
c5f341ab BP |
51 | Configuration for an Open vSwitch daemon. There must be exactly |
52 | one record in the <ref table="Open_vSwitch"/> table. | |
89365653 BP |
53 | |
54 | <group title="Configuration"> | |
55 | <column name="bridges"> | |
56 | Set of bridges managed by the daemon. | |
57 | </column> | |
58 | ||
89365653 BP |
59 | <column name="ssl"> |
60 | SSL used globally by the daemon. | |
61 | </column> | |
f5e7ed5d | 62 | |
3fd8d445 BP |
63 | <column name="external_ids" key="system-id"> |
64 | A unique identifier for the Open vSwitch's physical host. | |
65 | The form of the identifier depends on the type of the host. | |
66 | On a Citrix XenServer, this will likely be the same as | |
67 | <ref column="external_ids" key="xs-system-uuid"/>. | |
3fe80505 BP |
68 | </column> |
69 | ||
3fd8d445 BP |
70 | <column name="external_ids" key="xs-system-uuid"> |
71 | The Citrix XenServer universally unique identifier for the physical | |
72 | host as displayed by <code>xe host-list</code>. | |
f5e7ed5d | 73 | </column> |
89365653 BP |
74 | </group> |
75 | ||
76 | <group title="Status"> | |
77 | <column name="next_cfg"> | |
78 | Sequence number for client to increment. When a client modifies | |
79 | any part of the database configuration and wishes to wait for | |
80 | Open vSwitch to finish applying the changes, it may increment | |
81 | this sequence number. | |
82 | </column> | |
83 | ||
84 | <column name="cur_cfg"> | |
85 | Sequence number that Open vSwitch sets to the current value of | |
2e57b537 | 86 | <ref column="next_cfg"/> after it finishes applying a set of |
89365653 BP |
87 | configuration changes. |
88 | </column> | |
c1c9c9c4 BP |
89 | |
90 | <column name="capabilities"> | |
91 | Describes functionality supported by the hardware and software platform | |
92 | on which this Open vSwitch is based. Clients should not modify this | |
93 | column. See the <ref table="Capability"/> description for defined | |
94 | capability categories and the meaning of associated | |
95 | <ref table="Capability"/> records. | |
96 | </column> | |
018f1525 | 97 | |
3fd8d445 | 98 | <group title="Statistics"> |
018f1525 | 99 | <p> |
3fd8d445 BP |
100 | The <code>statistics</code> column contains key-value pairs that |
101 | report statistics about a system running an Open vSwitch. These are | |
102 | updated periodically (currently, every 5 seconds). Key-value pairs | |
103 | that cannot be determined or that do not apply to a platform are | |
104 | omitted. | |
ce887677 BP |
105 | </p> |
106 | ||
f9e5e5b3 BP |
107 | <column name="other_config" key="enable-statistics" |
108 | type='{"type": "boolean"}'> | |
3fd8d445 BP |
109 | Statistics are disabled by default to avoid overhead in the common |
110 | case when statistics gathering is not useful. Set this value to | |
111 | <code>true</code> to enable populating the <ref column="statistics"/> | |
112 | column or to <code>false</code> to explicitly disable it. | |
113 | </column> | |
3fe80505 | 114 | |
f9e5e5b3 BP |
115 | <column name="statistics" key="cpu" |
116 | type='{"type": "integer", "minInteger": 1}'> | |
3fd8d445 BP |
117 | <p> |
118 | Number of CPU processors, threads, or cores currently online and | |
119 | available to the operating system on which Open vSwitch is running, | |
120 | as an integer. This may be less than the number installed, if some | |
121 | are not online or if they are not available to the operating | |
122 | system. | |
123 | </p> | |
124 | <p> | |
125 | Open vSwitch userspace processes are not multithreaded, but the | |
126 | Linux kernel-based datapath is. | |
127 | </p> | |
128 | </column> | |
ce887677 | 129 | |
3fd8d445 BP |
130 | <column name="statistics" key="load_average"> |
131 | A comma-separated list of three floating-point numbers, | |
132 | representing the system load average over the last 1, 5, and 15 | |
133 | minutes, respectively. | |
134 | </column> | |
ce887677 | 135 | |
3fd8d445 BP |
136 | <column name="statistics" key="memory"> |
137 | <p> | |
138 | A comma-separated list of integers, each of which represents a | |
139 | quantity of memory in kilobytes that describes the operating | |
140 | system on which Open vSwitch is running. In respective order, | |
141 | these values are: | |
142 | </p> | |
ce887677 | 143 | |
3fd8d445 BP |
144 | <ol> |
145 | <li>Total amount of RAM allocated to the OS.</li> | |
146 | <li>RAM allocated to the OS that is in use.</li> | |
147 | <li>RAM that can be flushed out to disk or otherwise discarded | |
148 | if that space is needed for another purpose. This number is | |
149 | necessarily less than or equal to the previous value.</li> | |
150 | <li>Total disk space allocated for swap.</li> | |
151 | <li>Swap space currently in use.</li> | |
152 | </ol> | |
ce887677 | 153 | |
3fd8d445 BP |
154 | <p> |
155 | On Linux, all five values can be determined and are included. On | |
156 | other operating systems, only the first two values can be | |
157 | determined, so the list will only have two values. | |
158 | </p> | |
159 | </column> | |
ce887677 | 160 | |
3fd8d445 BP |
161 | <column name="statistics" key="process_NAME"> |
162 | <p> | |
163 | One such key-value pair, with <code>NAME</code> replaced by | |
164 | a process name, will exist for each running Open vSwitch | |
165 | daemon process, with <var>name</var> replaced by the | |
166 | daemon's name (e.g. <code>process_ovs-vswitchd</code>). The | |
167 | value is a comma-separated list of integers. The integers | |
168 | represent the following, with memory measured in kilobytes | |
169 | and durations in milliseconds: | |
170 | </p> | |
ce887677 | 171 | |
3fd8d445 BP |
172 | <ol> |
173 | <li>The process's virtual memory size.</li> | |
174 | <li>The process's resident set size.</li> | |
175 | <li>The amount of user and system CPU time consumed by the | |
176 | process.</li> | |
177 | <li>The number of times that the process has crashed and been | |
178 | automatically restarted by the monitor.</li> | |
179 | <li>The duration since the process was started.</li> | |
180 | <li>The duration for which the process has been running.</li> | |
181 | </ol> | |
ce887677 | 182 | |
3fd8d445 BP |
183 | <p> |
184 | The interpretation of some of these values depends on whether the | |
185 | process was started with the <option>--monitor</option>. If it | |
186 | was not, then the crash count will always be 0 and the two | |
187 | durations will always be the same. If <option>--monitor</option> | |
188 | was given, then the crash count may be positive; if it is, the | |
189 | latter duration is the amount of time since the most recent crash | |
190 | and restart. | |
191 | </p> | |
ce887677 | 192 | |
3fd8d445 BP |
193 | <p> |
194 | There will be one key-value pair for each file in Open vSwitch's | |
195 | ``run directory'' (usually <code>/var/run/openvswitch</code>) | |
196 | whose name ends in <code>.pid</code>, whose contents are a | |
197 | process ID, and which is locked by a running process. The | |
198 | <var>name</var> is taken from the pidfile's name. | |
199 | </p> | |
ce887677 | 200 | |
3fd8d445 BP |
201 | <p> |
202 | Currently Open vSwitch is only able to obtain all of the above | |
203 | detail on Linux systems. On other systems, the same key-value | |
204 | pairs will be present but the values will always be the empty | |
205 | string. | |
206 | </p> | |
207 | </column> | |
ce887677 | 208 | |
3fd8d445 BP |
209 | <column name="statistics" key="file_systems"> |
210 | <p> | |
211 | A space-separated list of information on local, writable file | |
212 | systems. Each item in the list describes one file system and | |
213 | consists in turn of a comma-separated list of the following: | |
214 | </p> | |
ce887677 | 215 | |
3fd8d445 BP |
216 | <ol> |
217 | <li>Mount point, e.g. <code>/</code> or <code>/var/log</code>. | |
218 | Any spaces or commas in the mount point are replaced by | |
219 | underscores.</li> | |
220 | <li>Total size, in kilobytes, as an integer.</li> | |
221 | <li>Amount of storage in use, in kilobytes, as an integer.</li> | |
222 | </ol> | |
ce887677 | 223 | |
3fd8d445 BP |
224 | <p> |
225 | This key-value pair is omitted if there are no local, writable | |
226 | file systems or if Open vSwitch cannot obtain the needed | |
227 | information. | |
228 | </p> | |
229 | </column> | |
230 | </group> | |
89365653 | 231 | </group> |
94db5407 | 232 | |
538c6dfa BP |
233 | <group title="Version Reporting"> |
234 | <p> | |
6b4186af EJ |
235 | These columns report the types and versions of the hardware and |
236 | software running Open vSwitch. We recommend in general that software | |
237 | should test whether specific features are supported instead of relying | |
238 | on version number checks. These values are primarily intended for | |
239 | reporting to human administrators. | |
538c6dfa BP |
240 | </p> |
241 | ||
242 | <column name="ovs_version"> | |
d4da3acc | 243 | The Open vSwitch version number, e.g. <code>1.1.0</code>. |
6b4186af | 244 | If Open vSwitch was configured with a build number, then it is |
d4da3acc | 245 | also included, e.g. <code>1.1.0+build6579</code>. |
538c6dfa BP |
246 | </column> |
247 | ||
8159b984 | 248 | <column name="db_version"> |
6b4186af | 249 | <p> |
8159b984 BP |
250 | The database schema version number in the form |
251 | <code><var>major</var>.<var>minor</var>.<var>tweak</var></code>, | |
252 | e.g. <code>1.2.3</code>. Whenever the database schema is changed in | |
253 | a non-backward compatible way (e.g. deleting a column or a table), | |
254 | <var>major</var> is incremented. When the database schema is changed | |
255 | in a backward compatible way (e.g. adding a new column), | |
256 | <var>minor</var> is incremented. When the database schema is changed | |
257 | cosmetically (e.g. reindenting its syntax), <var>tweak</var> is | |
258 | incremented. | |
259 | </p> | |
260 | ||
261 | <p> | |
262 | The schema version is part of the database schema, so it can also be | |
263 | retrieved by fetching the schema using the Open vSwitch database | |
264 | protocol. | |
265 | </p> | |
266 | </column> | |
267 | ||
538c6dfa BP |
268 | <column name="system_type"> |
269 | <p> | |
6b4186af EJ |
270 | An identifier for the type of system on top of which Open vSwitch |
271 | runs, e.g. <code>XenServer</code> or <code>KVM</code>. | |
272 | </p> | |
273 | <p> | |
274 | System integrators are responsible for choosing and setting an | |
275 | appropriate value for this column. | |
276 | </p> | |
538c6dfa BP |
277 | </column> |
278 | ||
279 | <column name="system_version"> | |
280 | <p> | |
6b4186af | 281 | The version of the system identified by <ref column="system_type"/>, |
404c1692 | 282 | e.g. <code>5.6.100-39265p</code> on XenServer 5.6.100 build 39265. |
6b4186af EJ |
283 | </p> |
284 | <p> | |
285 | System integrators are responsible for choosing and setting an | |
286 | appropriate value for this column. | |
287 | </p> | |
538c6dfa | 288 | </column> |
6b4186af | 289 | |
538c6dfa BP |
290 | </group> |
291 | ||
94db5407 BP |
292 | <group title="Database Configuration"> |
293 | <p> | |
294 | These columns primarily configure the Open vSwitch database | |
295 | (<code>ovsdb-server</code>), not the Open vSwitch switch | |
296 | (<code>ovs-vswitchd</code>). The OVSDB database also uses the <ref | |
297 | column="ssl"/> settings. | |
298 | </p> | |
299 | ||
300 | <p> | |
301 | The Open vSwitch switch does read the database configuration to | |
302 | determine remote IP addresses to which in-band control should apply. | |
303 | </p> | |
304 | ||
305 | <column name="manager_options"> | |
306 | Database clients to which the Open vSwitch database server should | |
307 | connect or to which it should listen, along with options for how these | |
308 | connection should be configured. See the <ref table="Manager"/> table | |
309 | for more information. | |
310 | </column> | |
94db5407 | 311 | </group> |
3fd8d445 BP |
312 | |
313 | <group title="Common Columns"> | |
314 | The overall purpose of these columns is described under <code>Common | |
315 | Columns</code> at the beginning of this document. | |
316 | ||
317 | <column name="other_config"/> | |
318 | <column name="external_ids"/> | |
319 | </group> | |
89365653 BP |
320 | </table> |
321 | ||
322 | <table name="Bridge"> | |
323 | <p> | |
324 | Configuration for a bridge within an | |
325 | <ref table="Open_vSwitch"/>. | |
326 | </p> | |
327 | <p> | |
328 | A <ref table="Bridge"/> record represents an Ethernet switch with one or | |
329 | more ``ports,'' which are the <ref table="Port"/> records pointed to by | |
330 | the <ref table="Bridge"/>'s <ref column="ports"/> column. | |
331 | </p> | |
332 | ||
333 | <group title="Core Features"> | |
334 | <column name="name"> | |
335 | Bridge identifier. Should be alphanumeric and no more than about 8 | |
336 | bytes long. Must be unique among the names of ports, interfaces, and | |
337 | bridges on a host. | |
338 | </column> | |
339 | ||
340 | <column name="ports"> | |
341 | Ports included in the bridge. | |
342 | </column> | |
343 | ||
344 | <column name="mirrors"> | |
345 | Port mirroring configuration. | |
346 | </column> | |
347 | ||
348 | <column name="netflow"> | |
349 | NetFlow configuration. | |
350 | </column> | |
351 | ||
352 | <column name="sflow"> | |
353 | sFlow configuration. | |
354 | </column> | |
355 | ||
356 | <column name="flood_vlans"> | |
6c2d2a9f BP |
357 | <p> |
358 | VLAN IDs of VLANs on which MAC address learning should be disabled, | |
359 | so that packets are flooded instead of being sent to specific ports | |
360 | that are believed to contain packets' destination MACs. This should | |
361 | ordinarily be used to disable MAC learning on VLANs used for | |
362 | mirroring (RSPAN VLANs). It may also be useful for debugging. | |
363 | </p> | |
364 | <p> | |
365 | SLB bonding (see the <ref table="Port" column="bond_mode"/> column in | |
366 | the <ref table="Port"/> table) is incompatible with | |
367 | <code>flood_vlans</code>. Consider using another bonding mode or | |
368 | a different type of mirror instead. | |
369 | </p> | |
89365653 BP |
370 | </column> |
371 | </group> | |
372 | ||
373 | <group title="OpenFlow Configuration"> | |
374 | <column name="controller"> | |
88f69f88 BP |
375 | <p> |
376 | OpenFlow controller set. If unset, then no OpenFlow controllers | |
377 | will be used. | |
378 | </p> | |
379 | ||
380 | <p> | |
381 | If there are primary controllers, removing all of them clears the | |
382 | flow table. If there are no primary controllers, adding one also | |
383 | clears the flow table. Other changes to the set of controllers, such | |
384 | as adding or removing a service controller, adding another primary | |
385 | controller to supplement an existing primary controller, or removing | |
386 | only one of two primary controllers, have no effect on the flow | |
387 | table. | |
388 | </p> | |
89365653 BP |
389 | </column> |
390 | ||
254750ce BP |
391 | <column name="flow_tables"> |
392 | Configuration for OpenFlow tables. Each pair maps from an OpenFlow | |
393 | table ID to configuration for that table. | |
394 | </column> | |
395 | ||
31681a5d JP |
396 | <column name="fail_mode"> |
397 | <p>When a controller is configured, it is, ordinarily, responsible | |
3fd8d445 BP |
398 | for setting up all flows on the switch. Thus, if the connection to |
399 | the controller fails, no new network connections can be set up. | |
400 | If the connection to the controller stays down long enough, | |
401 | no packets can pass through the switch at all. This setting | |
402 | determines the switch's response to such a situation. It may be set | |
403 | to one of the following: | |
404 | <dl> | |
405 | <dt><code>standalone</code></dt> | |
406 | <dd>If no message is received from the controller for three | |
407 | times the inactivity probe interval | |
408 | (see <ref column="inactivity_probe"/>), then Open vSwitch | |
409 | will take over responsibility for setting up flows. In | |
410 | this mode, Open vSwitch causes the bridge to act like an | |
411 | ordinary MAC-learning switch. Open vSwitch will continue | |
412 | to retry connecting to the controller in the background | |
413 | and, when the connection succeeds, it will discontinue its | |
414 | standalone behavior.</dd> | |
415 | <dt><code>secure</code></dt> | |
416 | <dd>Open vSwitch will not set up flows on its own when the | |
417 | controller connection fails or when no controllers are | |
418 | defined. The bridge will continue to retry connecting to | |
419 | any defined controllers forever.</dd> | |
420 | </dl> | |
31681a5d JP |
421 | </p> |
422 | <p>If this value is unset, the default is implementation-specific.</p> | |
299a244b | 423 | <p>When more than one controller is configured, |
3fd8d445 BP |
424 | <ref column="fail_mode"/> is considered only when none of the |
425 | configured controllers can be contacted.</p> | |
88f69f88 BP |
426 | <p> |
427 | Changing <ref column="fail_mode"/> when no primary controllers are | |
428 | configured clears the flow table. | |
429 | </p> | |
31681a5d JP |
430 | </column> |
431 | ||
89365653 | 432 | <column name="datapath_id"> |
8de67146 BP |
433 | Reports the OpenFlow datapath ID in use. Exactly 16 hex digits. |
434 | (Setting this column has no useful effect. Set <ref | |
435 | column="other-config" key="datapath-id"/> instead.) | |
89365653 | 436 | </column> |
3fd8d445 BP |
437 | |
438 | <column name="other_config" key="datapath-id"> | |
439 | Exactly 16 hex digits to set the OpenFlow datapath ID to a specific | |
440 | value. May not be all-zero. | |
441 | </column> | |
442 | ||
f9e5e5b3 BP |
443 | <column name="other_config" key="disable-in-band" |
444 | type='{"type": "boolean"}'> | |
3fd8d445 BP |
445 | If set to <code>true</code>, disable in-band control on the bridge |
446 | regardless of controller and manager settings. | |
447 | </column> | |
448 | ||
f9e5e5b3 BP |
449 | <column name="other_config" key="in-band-queue" |
450 | type='{"type": "integer", "minInteger": 0, "maxInteger": 4294967295}'> | |
3fd8d445 BP |
451 | A queue ID as a nonnegative integer. This sets the OpenFlow queue ID |
452 | that will be used by flows set up by in-band control on this bridge. | |
453 | If unset, or if the port used by an in-band control flow does not have | |
454 | QoS configured, or if the port does not have a queue with the specified | |
455 | ID, the default queue is used instead. | |
456 | </column> | |
89365653 BP |
457 | </group> |
458 | ||
21f7563c JP |
459 | <group title="Spanning Tree Configuration"> |
460 | The IEEE 802.1D Spanning Tree Protocol (STP) is a network protocol | |
461 | that ensures loop-free topologies. It allows redundant links to | |
462 | be included in the network to provide automatic backup paths if | |
463 | the active links fails. | |
464 | ||
465 | <column name="stp_enable"> | |
466 | Enable spanning tree on the bridge. By default, STP is disabled | |
467 | on bridges. Bond, internal, and mirror ports are not supported | |
468 | and will not participate in the spanning tree. | |
469 | </column> | |
470 | ||
471 | <column name="other_config" key="stp-system-id"> | |
472 | The bridge's STP identifier (the lower 48 bits of the bridge-id) | |
473 | in the form | |
474 | <var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>. | |
475 | By default, the identifier is the MAC address of the bridge. | |
476 | </column> | |
477 | ||
478 | <column name="other_config" key="stp-priority" | |
479 | type='{"type": "integer", "minInteger": 0, "maxInteger": 65535}'> | |
480 | The bridge's relative priority value for determining the root | |
481 | bridge (the upper 16 bits of the bridge-id). A bridge with the | |
482 | lowest bridge-id is elected the root. By default, the priority | |
483 | is 0x8000. | |
484 | </column> | |
485 | ||
486 | <column name="other_config" key="stp-hello-time" | |
487 | type='{"type": "integer", "minInteger": 1, "maxInteger": 10}'> | |
488 | The interval between transmissions of hello messages by | |
489 | designated ports, in seconds. By default the hello interval is | |
490 | 2 seconds. | |
491 | </column> | |
492 | ||
493 | <column name="other_config" key="stp-max-age" | |
494 | type='{"type": "integer", "minInteger": 6, "maxInteger": 40}'> | |
495 | The maximum age of the information transmitted by the bridge | |
496 | when it is the root bridge, in seconds. By default, the maximum | |
497 | age is 20 seconds. | |
498 | </column> | |
499 | ||
500 | <column name="other_config" key="stp-forward-delay" | |
501 | type='{"type": "integer", "minInteger": 4, "maxInteger": 30}'> | |
502 | The delay to wait between transitioning root and designated | |
503 | ports to <code>forwarding</code>, in seconds. By default, the | |
504 | forwarding delay is 15 seconds. | |
505 | </column> | |
506 | </group> | |
507 | ||
89365653 BP |
508 | <group title="Other Features"> |
509 | <column name="datapath_type"> | |
510 | Name of datapath provider. The kernel datapath has | |
511 | type <code>system</code>. The userspace datapath has | |
512 | type <code>netdev</code>. | |
513 | </column> | |
514 | ||
3fd8d445 BP |
515 | <column name="external_ids" key="bridge-id"> |
516 | A unique identifier of the bridge. On Citrix XenServer this will | |
517 | commonly be the same as | |
518 | <ref column="external_ids" key="xs-network-uuids"/>. | |
89365653 BP |
519 | </column> |
520 | ||
3fd8d445 BP |
521 | <column name="external_ids" key="xs-network-uuids"> |
522 | Semicolon-delimited set of universally unique identifier(s) for the | |
523 | network with which this bridge is associated on a Citrix XenServer | |
524 | host. The network identifiers are RFC 4122 UUIDs as displayed by, | |
525 | e.g., <code>xe network-list</code>. | |
526 | </column> | |
527 | ||
528 | <column name="other_config" key="hwaddr"> | |
529 | An Ethernet address in the form | |
530 | <var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var> | |
531 | to set the hardware address of the local port and influence the | |
532 | datapath ID. | |
533 | </column> | |
534 | ||
f9e5e5b3 BP |
535 | <column name="other_config" key="flow-eviction-threshold" |
536 | type='{"type": "integer", "minInteger": 0}'> | |
3fd8d445 BP |
537 | <p> |
538 | A number of flows as a nonnegative integer. This sets number of | |
539 | flows at which eviction from the kernel flow table will be triggered. | |
540 | If there are a large number of flows then increasing this value to | |
541 | around the number of flows present can result in reduced CPU usage | |
542 | and packet loss. | |
543 | </p> | |
544 | <p> | |
545 | The default is 1000. Values below 100 will be rounded up to 100. | |
546 | </p> | |
547 | </column> | |
548 | ||
f9e5e5b3 BP |
549 | <column name="other_config" key="forward-bpdu" |
550 | type='{"type": "boolean"}'> | |
21f7563c JP |
551 | Option to allow forwarding of BPDU frames when NORMAL action is |
552 | invoked. Frames with reserved Ethernet addresses (e.g. STP | |
553 | BPDU) will be forwarded when this option is enabled and the | |
554 | switch is not providing that functionality. If STP is enabled | |
555 | on the port, STP BPDUs will never be forwarded. If the Open | |
556 | vSwitch bridge is used to connect different Ethernet networks, | |
557 | and if Open vSwitch node does not run STP, then this option | |
558 | should be enabled. Default is disabled, set to | |
559 | <code>true</code> to enable. | |
560 | </column> | |
561 | </group> | |
562 | ||
563 | <group title="Bridge Status"> | |
564 | <p> | |
565 | Status information about bridges. | |
566 | </p> | |
567 | <column name="status"> | |
568 | Key-value pairs that report bridge status. | |
569 | </column> | |
570 | <column name="status" key="stp_bridge_id"> | |
571 | <p> | |
572 | The bridge-id (in hex) used in spanning tree advertisements. | |
573 | Configuring the bridge-id is described in the | |
574 | <code>stp-system-id</code> and <code>stp-priority</code> keys | |
575 | of the <code>other_config</code> section earlier. | |
576 | </p> | |
577 | </column> | |
578 | <column name="status" key="stp_designated_root"> | |
579 | <p> | |
580 | The designated root (in hex) for this spanning tree. | |
581 | </p> | |
582 | </column> | |
583 | <column name="status" key="stp_root_path_cost"> | |
584 | <p> | |
585 | The path cost of reaching the designated bridge. A lower | |
586 | number is better. | |
587 | </p> | |
89365653 BP |
588 | </column> |
589 | </group> | |
3fd8d445 BP |
590 | |
591 | <group title="Common Columns"> | |
592 | The overall purpose of these columns is described under <code>Common | |
593 | Columns</code> at the beginning of this document. | |
594 | ||
595 | <column name="other_config"/> | |
596 | <column name="external_ids"/> | |
597 | </group> | |
89365653 BP |
598 | </table> |
599 | ||
600 | <table name="Port" table="Port or bond configuration."> | |
601 | <p>A port within a <ref table="Bridge"/>.</p> | |
602 | <p>Most commonly, a port has exactly one ``interface,'' pointed to by its | |
3fd8d445 BP |
603 | <ref column="interfaces"/> column. Such a port logically |
604 | corresponds to a port on a physical Ethernet switch. A port | |
605 | with more than one interface is a ``bonded port'' (see | |
606 | <ref group="Bonding Configuration"/>).</p> | |
89365653 | 607 | <p>Some properties that one might think as belonging to a port are actually |
3fd8d445 | 608 | part of the port's <ref table="Interface"/> members.</p> |
89365653 BP |
609 | |
610 | <column name="name"> | |
611 | Port name. Should be alphanumeric and no more than about 8 | |
612 | bytes long. May be the same as the interface name, for | |
613 | non-bonded ports. Must otherwise be unique among the names of | |
614 | ports, interfaces, and bridges on a host. | |
615 | </column> | |
616 | ||
617 | <column name="interfaces"> | |
618 | The port's interfaces. If there is more than one, this is a | |
619 | bonded Port. | |
620 | </column> | |
621 | ||
622 | <group title="VLAN Configuration"> | |
ecac4ebf BP |
623 | <p>Bridge ports support the following types of VLAN configuration:</p> |
624 | <dl> | |
625 | <dt>trunk</dt> | |
626 | <dd> | |
627 | <p> | |
628 | A trunk port carries packets on one or more specified VLANs | |
629 | specified in the <ref column="trunks"/> column (often, on every | |
630 | VLAN). A packet that ingresses on a trunk port is in the VLAN | |
631 | specified in its 802.1Q header, or VLAN 0 if the packet has no | |
632 | 802.1Q header. A packet that egresses through a trunk port will | |
5e9ceccd | 633 | have an 802.1Q header if it has a nonzero VLAN ID. |
ecac4ebf BP |
634 | </p> |
635 | ||
636 | <p> | |
637 | Any packet that ingresses on a trunk port tagged with a VLAN that | |
638 | the port does not trunk is dropped. | |
639 | </p> | |
640 | </dd> | |
641 | ||
642 | <dt>access</dt> | |
643 | <dd> | |
644 | <p> | |
645 | An access port carries packets on exactly one VLAN specified in the | |
5e9ceccd BP |
646 | <ref column="tag"/> column. Packets egressing on an access port |
647 | have no 802.1Q header. | |
ecac4ebf BP |
648 | </p> |
649 | ||
650 | <p> | |
5e9ceccd BP |
651 | Any packet with an 802.1Q header with a nonzero VLAN ID that |
652 | ingresses on an access port is dropped, regardless of whether the | |
653 | VLAN ID in the header is the access port's VLAN ID. | |
ecac4ebf BP |
654 | </p> |
655 | </dd> | |
656 | ||
657 | <dt>native-tagged</dt> | |
658 | <dd> | |
659 | A native-tagged port resembles a trunk port, with the exception that | |
660 | a packet without an 802.1Q header that ingresses on a native-tagged | |
661 | port is in the ``native VLAN'' (specified in the <ref column="tag"/> | |
662 | column). | |
663 | </dd> | |
664 | ||
665 | <dt>native-untagged</dt> | |
666 | <dd> | |
667 | A native-untagged port resembles a native-tagged port, with the | |
668 | exception that a packet that egresses on a native-untagged port in | |
5e9ceccd | 669 | the native VLAN will not have an 802.1Q header. |
ecac4ebf BP |
670 | </dd> |
671 | </dl> | |
672 | <p> | |
673 | A packet will only egress through bridge ports that carry the VLAN of | |
674 | the packet, as described by the rules above. | |
89365653 BP |
675 | </p> |
676 | ||
ecac4ebf | 677 | <column name="vlan_mode"> |
7894d33b | 678 | <p> |
ecac4ebf BP |
679 | The VLAN mode of the port, as described above. When this column is |
680 | empty, a default mode is selected as follows: | |
7894d33b | 681 | </p> |
ecac4ebf BP |
682 | <ul> |
683 | <li> | |
684 | If <ref column="tag"/> contains a value, the port is an access | |
685 | port. The <ref column="trunks"/> column should be empty. | |
686 | </li> | |
687 | <li> | |
688 | Otherwise, the port is a trunk port. The <ref column="trunks"/> | |
689 | column value is honored if it is present. | |
690 | </li> | |
691 | </ul> | |
692 | </column> | |
693 | ||
694 | <column name="tag"> | |
7894d33b | 695 | <p> |
ecac4ebf BP |
696 | For an access port, the port's implicitly tagged VLAN. For a |
697 | native-tagged or native-untagged port, the port's native VLAN. Must | |
698 | be empty if this is a trunk port. | |
7894d33b | 699 | </p> |
89365653 BP |
700 | </column> |
701 | ||
702 | <column name="trunks"> | |
7894d33b | 703 | <p> |
ecac4ebf BP |
704 | For a trunk, native-tagged, or native-untagged port, the 802.1Q VLAN |
705 | or VLANs that this port trunks; if it is empty, then the port trunks | |
706 | all VLANs. Must be empty if this is an access port. | |
7894d33b BP |
707 | </p> |
708 | <p> | |
ecac4ebf BP |
709 | A native-tagged or native-untagged port always trunks its native |
710 | VLAN, regardless of whether <ref column="trunks"/> includes that | |
711 | VLAN. | |
7894d33b | 712 | </p> |
89365653 | 713 | </column> |
5e9ceccd BP |
714 | |
715 | <column name="other_config" key="priority-tags" | |
716 | type='{"type": "boolean"}'> | |
717 | <p> | |
718 | An 802.1Q header contains two important pieces of information: a VLAN | |
719 | ID and a priority. A frame with a zero VLAN ID, called a | |
720 | ``priority-tagged'' frame, is supposed to be treated the same way as | |
721 | a frame without an 802.1Q header at all (except for the priority). | |
722 | </p> | |
723 | ||
724 | <p> | |
725 | However, some network elements ignore any frame that has 802.1Q | |
726 | header at all, even when the VLAN ID is zero. Therefore, by default | |
727 | Open vSwitch does not output priority-tagged frames, instead omitting | |
728 | the 802.1Q header entirely if the VLAN ID is zero. Set this key to | |
729 | <code>true</code> to enable priority-tagged frames on a port. | |
730 | </p> | |
731 | ||
732 | <p> | |
733 | Regardless of this setting, Open vSwitch omits the 802.1Q header on | |
734 | output if both the VLAN ID and priority would be zero. | |
735 | </p> | |
736 | ||
737 | <p> | |
738 | All frames output to native-tagged ports have a nonzero VLAN ID, so | |
739 | this setting is not meaningful on native-tagged ports. | |
740 | </p> | |
741 | </column> | |
89365653 BP |
742 | </group> |
743 | ||
744 | <group title="Bonding Configuration"> | |
be02e7c3 | 745 | <p>A port that has more than one interface is a ``bonded port.'' Bonding |
3fd8d445 BP |
746 | allows for load balancing and fail-over. Some kinds of bonding will |
747 | work with any kind of upstream switch:</p> | |
9f5073d8 EJ |
748 | |
749 | <dl> | |
750 | <dt><code>balance-slb</code></dt> | |
751 | <dd> | |
752 | Balances flows among slaves based on source MAC address and output | |
753 | VLAN, with periodic rebalancing as traffic patterns change. | |
754 | </dd> | |
755 | ||
756 | <dt><code>active-backup</code></dt> | |
757 | <dd> | |
758 | Assigns all flows to one slave, failing over to a backup slave when | |
759 | the active slave is disabled. | |
760 | </dd> | |
761 | </dl> | |
762 | ||
763 | <p> | |
fb0b29a3 | 764 | The following modes require the upstream switch to support 802.3ad with |
bdebeece | 765 | successful LACP negotiation: |
9f5073d8 EJ |
766 | </p> |
767 | ||
768 | <dl> | |
769 | <dt><code>balance-tcp</code></dt> | |
770 | <dd> | |
771 | Balances flows among slaves based on L2, L3, and L4 protocol | |
772 | information such as destination MAC address, IP address, and TCP | |
773 | port. | |
774 | </dd> | |
89365653 | 775 | |
fb0b29a3 EJ |
776 | <dt><code>stable</code></dt> |
777 | <dd> | |
778 | <p>Attempts to always assign a given flow to the same slave | |
3fd8d445 BP |
779 | consistently. In an effort to maintain stability, no load |
780 | balancing is done. Uses a similar hashing strategy to | |
781 | <code>balance-tcp</code>, always taking into account L3 and L4 | |
782 | fields even if LACP negotiations are unsuccessful. </p> | |
317dadd6 | 783 | <p>Slave selection decisions are made based on <ref table="Interface" |
3fd8d445 BP |
784 | column="other_config" key="bond-stable-id"/> if set. Otherwise, |
785 | OpenFlow port number is used. Decisions are consistent across all | |
786 | <code>ovs-vswitchd</code> instances with equivalent | |
787 | <ref table="Interface" column="other_config" key="bond-stable-id"/> | |
788 | values.</p> | |
fb0b29a3 EJ |
789 | </dd> |
790 | </dl> | |
791 | ||
89365653 | 792 | <p>These columns apply only to bonded ports. Their values are |
3fd8d445 | 793 | otherwise ignored.</p> |
89365653 | 794 | |
27dcaa1a | 795 | <column name="bond_mode"> |
9f5073d8 | 796 | <p>The type of bonding used for a bonded port. Defaults to |
4df08875 | 797 | <code>active-backup</code> if unset. |
9f5073d8 | 798 | </p> |
be02e7c3 EJ |
799 | </column> |
800 | ||
96ada1a4 EJ |
801 | <column name="other_config" key="bond-hash-basis" |
802 | type='{"type": "integer"}'> | |
803 | An integer hashed along with flows when choosing output slaves in load | |
804 | balanced bonds. When changed, all flows will be assigned different | |
805 | hash values possibly causing slave selection decisions to change. Does | |
806 | not affect bonding modes which do not employ load balancing such as | |
807 | <code>active-backup</code>. | |
808 | </column> | |
809 | ||
3fd8d445 BP |
810 | <group title="Link Failure Detection"> |
811 | <p> | |
812 | An important part of link bonding is detecting that links are down so | |
813 | that they may be disabled. These settings determine how Open vSwitch | |
814 | detects link failure. | |
815 | </p> | |
89365653 | 816 | |
f9e5e5b3 BP |
817 | <column name="other_config" key="bond-detect-mode" |
818 | type='{"type": "string", "enum": ["set", ["carrier", "miimon"]]}'> | |
819 | The means used to detect link failures. Defaults to | |
3fd8d445 BP |
820 | <code>carrier</code> which uses each interface's carrier to detect |
821 | failures. When set to <code>miimon</code>, will check for failures | |
822 | by polling each interface's MII. | |
823 | </column> | |
89365653 | 824 | |
f9e5e5b3 BP |
825 | <column name="other_config" key="bond-miimon-interval" |
826 | type='{"type": "integer"}'> | |
3fd8d445 BP |
827 | The interval, in milliseconds, between successive attempts to poll |
828 | each interface's MII. Relevant only when <ref column="other_config" | |
829 | key="bond-detect-mode"/> is <code>miimon</code>. | |
830 | </column> | |
831 | ||
832 | <column name="bond_updelay"> | |
833 | <p> | |
834 | The number of milliseconds for which carrier must stay up on an | |
835 | interface before the interface is considered to be up. Specify | |
836 | <code>0</code> to enable the interface immediately. | |
837 | </p> | |
838 | ||
839 | <p> | |
840 | This setting is honored only when at least one bonded interface is | |
841 | already enabled. When no interfaces are enabled, then the first | |
842 | bond interface to come up is enabled immediately. | |
843 | </p> | |
844 | </column> | |
845 | ||
846 | <column name="bond_downdelay"> | |
847 | The number of milliseconds for which carrier must stay down on an | |
848 | interface before the interface is considered to be down. Specify | |
849 | <code>0</code> to disable the interface immediately. | |
850 | </column> | |
851 | </group> | |
c25c91fd | 852 | |
3fd8d445 BP |
853 | <group title="LACP Configuration"> |
854 | <p> | |
855 | LACP, the Link Aggregation Control Protocol, is an IEEE standard that | |
856 | allows switches to automatically detect that they are connected by | |
857 | multiple links and aggregate across those links. These settings | |
858 | control LACP behavior. | |
859 | </p> | |
860 | ||
861 | <column name="lacp"> | |
862 | Configures LACP on this port. LACP allows directly connected | |
76ea8efd AE |
863 | switches to negotiate which links may be bonded. LACP may be enabled |
864 | on non-bonded ports for the benefit of any switches they may be | |
c25c91fd EJ |
865 | connected to. <code>active</code> ports are allowed to initiate LACP |
866 | negotiations. <code>passive</code> ports are allowed to participate | |
867 | in LACP negotiations initiated by a remote switch, but not allowed to | |
bdebeece EJ |
868 | initiate such negotiations themselves. If LACP is enabled on a port |
869 | whose partner switch does not support LACP, the bond will be | |
870 | disabled. Defaults to <code>off</code> if unset. | |
3fd8d445 BP |
871 | </column> |
872 | ||
873 | <column name="other_config" key="lacp-system-id"> | |
874 | The LACP system ID of this <ref table="Port"/>. The system ID of a | |
875 | LACP bond is used to identify itself to its partners. Must be a | |
a9bf011b EJ |
876 | nonzero MAC address. Defaults to the bridge Ethernet address if |
877 | unset. | |
3fd8d445 BP |
878 | </column> |
879 | ||
f9e5e5b3 BP |
880 | <column name="other_config" key="lacp-system-priority" |
881 | type='{"type": "integer", "minInteger": 1, "maxInteger": 65535}'> | |
3fd8d445 BP |
882 | The LACP system priority of this <ref table="Port"/>. In LACP |
883 | negotiations, link status decisions are made by the system with the | |
f9e5e5b3 | 884 | numerically lower priority. |
3fd8d445 BP |
885 | </column> |
886 | ||
887 | <column name="other_config" key="lacp-time"> | |
888 | <p> | |
889 | The LACP timing which should be used on this <ref table="Port"/>. | |
890 | Possible values are <code>fast</code>, <code>slow</code> and a | |
891 | positive number of milliseconds. By default <code>slow</code> is | |
892 | used. When configured to be <code>fast</code> LACP heartbeats are | |
893 | requested at a rate of once per second causing connectivity | |
894 | problems to be detected more quickly. In <code>slow</code> mode, | |
895 | heartbeats are requested at a rate of once every 30 seconds. | |
896 | </p> | |
c25c91fd | 897 | |
3fd8d445 BP |
898 | <p> |
899 | Users may manually set a heartbeat transmission rate to increase | |
900 | the fault detection speed further. When manually set, OVS expects | |
901 | the partner switch to be configured with the same transmission | |
902 | rate. Manually setting <code>lacp-time</code> to something other | |
903 | than <code>fast</code> or <code>slow</code> is not supported by the | |
904 | LACP specification. | |
905 | </p> | |
906 | </column> | |
907 | ||
f9e5e5b3 BP |
908 | <column name="other_config" key="lacp-heartbeat" |
909 | type='{"type": "boolean"}'> | |
910 | Treat LACP like a simple heartbeat protocol for link state | |
911 | monitoring. Most features of the LACP protocol are disabled | |
912 | when this mode is in use. The default if not specified is | |
913 | <code>false</code>. | |
3fd8d445 | 914 | </column> |
3fd8d445 BP |
915 | </group> |
916 | ||
917 | <group title="SLB Configuration"> | |
918 | <p> | |
919 | These settings control behavior when a bond is in | |
920 | <code>balance-slb</code> mode, regardless of whether the bond was | |
921 | intentionally configured in SLB mode or it fell back to SLB mode | |
922 | because LACP negotiation failed. | |
923 | </p> | |
924 | ||
f9e5e5b3 | 925 | <column name="other_config" key="bond-rebalance-interval" |
bc1b010c EJ |
926 | type='{"type": "integer", "minInteger": 0, "maxInteger": 10000}'> |
927 | For a load balanced bonded port, the number of milliseconds between | |
928 | successive attempts to rebalance the bond, that is, to move flows | |
929 | from one interface on the bond to another in an attempt to keep usage | |
930 | of each interface roughly equal. If zero, load balancing is disabled | |
931 | on the bond (carrier status changes still cause flows to move). If | |
932 | less than 1000ms, the rebalance interval will be 1000ms. | |
3fd8d445 BP |
933 | </column> |
934 | </group> | |
935 | ||
936 | <column name="bond_fake_iface"> | |
937 | For a bonded port, whether to create a fake internal interface with the | |
938 | name of the port. Use only for compatibility with legacy software that | |
939 | requires this. | |
940 | </column> | |
89365653 BP |
941 | </group> |
942 | ||
21f7563c JP |
943 | <group title="Spanning Tree Configuration"> |
944 | <column name="other_config" key="stp-enable" | |
945 | type='{"type": "boolean"}'> | |
946 | If spanning tree is enabled on the bridge, member ports are | |
947 | enabled by default (with the exception of bond, internal, and | |
948 | mirror ports which do not work with STP). If this column's | |
949 | value is <code>false</code> spanning tree is disabled on the | |
950 | port. | |
951 | </column> | |
952 | ||
953 | <column name="other_config" key="stp-port-num" | |
954 | type='{"type": "integer", "minInteger": 1, "maxInteger": 255}'> | |
955 | The port number used for the lower 8 bits of the port-id. By | |
956 | default, the numbers will be assigned automatically. If any | |
957 | port's number is manually configured on a bridge, then they | |
958 | must all be. | |
959 | </column> | |
960 | ||
961 | <column name="other_config" key="stp-port-priority" | |
962 | type='{"type": "integer", "minInteger": 0, "maxInteger": 255}'> | |
963 | The port's relative priority value for determining the root | |
964 | port (the upper 8 bits of the port-id). A port with a lower | |
965 | port-id will be chosen as the root port. By default, the | |
966 | priority is 0x80. | |
967 | </column> | |
968 | ||
969 | <column name="other_config" key="stp-path-cost" | |
970 | type='{"type": "integer", "minInteger": 0, "maxInteger": 65535}'> | |
971 | Spanning tree path cost for the port. A lower number indicates | |
972 | a faster link. By default, the cost is based on the maximum | |
973 | speed of the link. | |
974 | </column> | |
975 | </group> | |
976 | ||
89365653 | 977 | <group title="Other Features"> |
c1c9c9c4 BP |
978 | <column name="qos"> |
979 | Quality of Service configuration for this port. | |
980 | </column> | |
299a244b | 981 | |
89365653 BP |
982 | <column name="mac"> |
983 | The MAC address to use for this port for the purpose of choosing the | |
984 | bridge's MAC address. This column does not necessarily reflect the | |
985 | port's actual MAC address, nor will setting it change the port's actual | |
986 | MAC address. | |
987 | </column> | |
988 | ||
989 | <column name="fake_bridge"> | |
990 | Does this port represent a sub-bridge for its tagged VLAN within the | |
991 | Bridge? See ovs-vsctl(8) for more information. | |
992 | </column> | |
993 | ||
3fd8d445 BP |
994 | <column name="external_ids" key="fake-bridge-id-*"> |
995 | External IDs for a fake bridge (see the <ref column="fake_bridge"/> | |
996 | column) are defined by prefixing a <ref table="Bridge"/> <ref | |
997 | table="Bridge" column="external_ids"/> key with | |
998 | <code>fake-bridge-</code>, | |
999 | e.g. <code>fake-bridge-xs-network-uuids</code>. | |
89365653 | 1000 | </column> |
3fd8d445 | 1001 | </group> |
89365653 | 1002 | |
21f7563c JP |
1003 | <group title="Port Status"> |
1004 | <p> | |
1005 | Status information about ports attached to bridges. | |
1006 | </p> | |
1007 | <column name="status"> | |
1008 | Key-value pairs that report port status. | |
1009 | </column> | |
1010 | <column name="status" key="stp_port_id"> | |
1011 | <p> | |
1012 | The port-id (in hex) used in spanning tree advertisements for | |
1013 | this port. Configuring the port-id is described in the | |
1014 | <code>stp-port-num</code> and <code>stp-port-priority</code> | |
1015 | keys of the <code>other_config</code> section earlier. | |
1016 | </p> | |
1017 | </column> | |
1018 | <column name="status" key="stp_state" | |
1019 | type='{"type": "string", "enum": ["set", | |
1020 | ["disabled", "listening", "learning", | |
1021 | "forwarding", "blocking"]]}'> | |
1022 | <p> | |
1023 | STP state of the port. | |
1024 | </p> | |
1025 | </column> | |
1026 | <column name="status" key="stp_sec_in_state" | |
1027 | type='{"type": "integer", "minInteger": 0}'> | |
1028 | <p> | |
1029 | The amount of time (in seconds) port has been in the current | |
1030 | STP state. | |
1031 | </p> | |
1032 | </column> | |
1033 | <column name="status" key="stp_role" | |
1034 | type='{"type": "string", "enum": ["set", | |
1035 | ["root", "designated", "alternate"]]}'> | |
1036 | <p> | |
1037 | STP role of the port. | |
1038 | </p> | |
1039 | </column> | |
1040 | </group> | |
1041 | ||
80740385 JP |
1042 | <group title="Port Statistics"> |
1043 | <p> | |
1044 | Key-value pairs that report port statistics. | |
1045 | </p> | |
1046 | <group title="Statistics: STP transmit and receive counters"> | |
1047 | <column name="statistics" key="stp_tx_count"> | |
1048 | Number of STP BPDUs sent on this port by the spanning | |
1049 | tree library. | |
1050 | </column> | |
1051 | <column name="statistics" key="stp_rx_count"> | |
1052 | Number of STP BPDUs received on this port and accepted by the | |
1053 | spanning tree library. | |
1054 | </column> | |
1055 | <column name="statistics" key="stp_error_count"> | |
1056 | Number of bad STP BPDUs received on this port. Bad BPDUs | |
1057 | include runt packets and those with an unexpected protocol ID. | |
1058 | </column> | |
1059 | </group> | |
1060 | </group> | |
1061 | ||
3fd8d445 BP |
1062 | <group title="Common Columns"> |
1063 | The overall purpose of these columns is described under <code>Common | |
1064 | Columns</code> at the beginning of this document. | |
1065 | ||
1066 | <column name="other_config"/> | |
1067 | <column name="external_ids"/> | |
89365653 BP |
1068 | </group> |
1069 | </table> | |
1070 | ||
1071 | <table name="Interface" title="One physical network device in a Port."> | |
1072 | An interface within a <ref table="Port"/>. | |
1073 | ||
1074 | <group title="Core Features"> | |
1075 | <column name="name"> | |
1076 | Interface name. Should be alphanumeric and no more than about 8 bytes | |
1077 | long. May be the same as the port name, for non-bonded ports. Must | |
1078 | otherwise be unique among the names of ports, interfaces, and bridges | |
1079 | on a host. | |
1080 | </column> | |
1081 | ||
1082 | <column name="mac"> | |
1083 | <p>Ethernet address to set for this interface. If unset then the | |
3fd8d445 | 1084 | default MAC address is used:</p> |
89365653 BP |
1085 | <ul> |
1086 | <li>For the local interface, the default is the lowest-numbered MAC | |
3fd8d445 BP |
1087 | address among the other bridge ports, either the value of the |
1088 | <ref table="Port" column="mac"/> in its <ref table="Port"/> record, | |
1089 | if set, or its actual MAC (for bonded ports, the MAC of its slave | |
1090 | whose name is first in alphabetical order). Internal ports and | |
1091 | bridge ports that are used as port mirroring destinations (see the | |
1092 | <ref table="Mirror"/> table) are ignored.</li> | |
2e57b537 | 1093 | <li>For other internal interfaces, the default MAC is randomly |
3fd8d445 | 1094 | generated.</li> |
89365653 | 1095 | <li>External interfaces typically have a MAC address associated with |
3fd8d445 | 1096 | their hardware.</li> |
89365653 BP |
1097 | </ul> |
1098 | <p>Some interfaces may not have a software-controllable MAC | |
1099 | address.</p> | |
1100 | </column> | |
1101 | ||
1102 | <column name="ofport"> | |
1103 | <p>OpenFlow port number for this interface. Unlike most columns, this | |
3fd8d445 BP |
1104 | column's value should be set only by Open vSwitch itself. Other |
1105 | clients should set this column to an empty set (the default) when | |
1106 | creating an <ref table="Interface"/>.</p> | |
89365653 | 1107 | <p>Open vSwitch populates this column when the port number becomes |
3fd8d445 BP |
1108 | known. If the interface is successfully added, |
1109 | <ref column="ofport"/> will be set to a number between 1 and 65535 | |
1110 | (generally either in the range 1 to 65279, inclusive, or 65534, the | |
1111 | port number for the OpenFlow ``local port''). If the interface | |
1112 | cannot be added then Open vSwitch sets this column | |
1113 | to -1.</p> | |
89365653 BP |
1114 | </column> |
1115 | </group> | |
1116 | ||
1117 | <group title="System-Specific Details"> | |
1118 | <column name="type"> | |
3fd8d445 BP |
1119 | <p> |
1120 | The interface type, one of: | |
1121 | </p> | |
1122 | ||
89365653 BP |
1123 | <dl> |
1124 | <dt><code>system</code></dt> | |
1125 | <dd>An ordinary network device, e.g. <code>eth0</code> on Linux. | |
3fd8d445 BP |
1126 | Sometimes referred to as ``external interfaces'' since they are |
1127 | generally connected to hardware external to that on which the Open | |
1128 | vSwitch is running. The empty string is a synonym for | |
1129 | <code>system</code>.</dd> | |
1130 | ||
89365653 | 1131 | <dt><code>internal</code></dt> |
2e57b537 | 1132 | <dd>A simulated network device that sends and receives traffic. An |
3fd8d445 BP |
1133 | internal interface whose <ref column="name"/> is the same as its |
1134 | bridge's <ref table="Open_vSwitch" column="name"/> is called the | |
1135 | ``local interface.'' It does not make sense to bond an internal | |
1136 | interface, so the terms ``port'' and ``interface'' are often used | |
1137 | imprecisely for internal interfaces.</dd> | |
1138 | ||
89365653 BP |
1139 | <dt><code>tap</code></dt> |
1140 | <dd>A TUN/TAP device managed by Open vSwitch.</dd> | |
3fd8d445 | 1141 | |
89365653 | 1142 | <dt><code>gre</code></dt> |
3fd8d445 BP |
1143 | <dd> |
1144 | An Ethernet over RFC 2890 Generic Routing Encapsulation over IPv4 | |
1145 | tunnel. See <ref group="Tunnel Options"/> for information on | |
1146 | configuring GRE tunnels. | |
e16a28b5 | 1147 | </dd> |
3fd8d445 | 1148 | |
e16a28b5 | 1149 | <dt><code>ipsec_gre</code></dt> |
3fd8d445 BP |
1150 | <dd> |
1151 | An Ethernet over RFC 2890 Generic Routing Encapsulation over IPv4 | |
1152 | IPsec tunnel. | |
a28716da | 1153 | </dd> |
3fd8d445 | 1154 | |
a28716da | 1155 | <dt><code>capwap</code></dt> |
3fd8d445 BP |
1156 | <dd> |
1157 | An Ethernet tunnel over the UDP transport portion of CAPWAP (RFC | |
1158 | 5415). This allows interoperability with certain switches that do | |
1159 | not support GRE. Only the tunneling component of the protocol is | |
1160 | implemented. UDP ports 58881 and 58882 are used as the source and | |
1161 | destination ports respectively. CAPWAP is currently supported only | |
89a1c6d0 | 1162 | with the Linux kernel datapath with kernel version 2.6.26 or later. |
88720519 | 1163 | </dd> |
3fd8d445 | 1164 | |
8aed4223 | 1165 | <dt><code>patch</code></dt> |
eca2df31 | 1166 | <dd> |
3fd8d445 | 1167 | A pair of virtual devices that act as a patch cable. |
eca2df31 | 1168 | </dd> |
3fd8d445 | 1169 | |
84b32864 EJ |
1170 | <dt><code>null</code></dt> |
1171 | <dd>An ignored interface.</dd> | |
89365653 BP |
1172 | </dl> |
1173 | </column> | |
3fd8d445 BP |
1174 | </group> |
1175 | ||
1176 | <group title="Tunnel Options"> | |
1177 | <p> | |
1178 | These options apply to interfaces with <ref column="type"/> of | |
1179 | <code>gre</code>, <code>ipsec_gre</code>, and <code>capwap</code>. | |
1180 | </p> | |
1181 | ||
1182 | <p> | |
1183 | Each tunnel must be uniquely identified by the combination of <ref | |
1184 | column="type"/>, <ref column="options" key="remote_ip"/>, <ref | |
1185 | column="options" key="local_ip"/>, and <ref column="options" | |
1186 | key="in_key"/>. If two ports are defined that are the same except one | |
1187 | has an optional identifier and the other does not, the more specific | |
1188 | one is matched first. <ref column="options" key="in_key"/> is | |
1189 | considered more specific than <ref column="options" key="local_ip"/> if | |
1190 | a port defines one and another port defines the other. | |
1191 | </p> | |
1192 | ||
1193 | <column name="options" key="remote_ip"> | |
b37e6334 BP |
1194 | <p> |
1195 | Required. The tunnel endpoint. Unicast and multicast endpoints are | |
1196 | both supported. | |
1197 | </p> | |
1198 | ||
1199 | <p> | |
1200 | When a multicast endpoint is specified, a routing table lookup occurs | |
1201 | only when the tunnel is created. Following a routing change, delete | |
1202 | and then re-create the tunnel to force a new routing table lookup. | |
1203 | </p> | |
3fd8d445 BP |
1204 | </column> |
1205 | ||
1206 | <column name="options" key="local_ip"> | |
b37e6334 BP |
1207 | Optional. The destination IP that received packets must match. |
1208 | Default is to match all addresses. Must be omitted when <ref | |
1209 | column="options" key="remote_ip"/> is a multicast address. | |
3fd8d445 BP |
1210 | </column> |
1211 | ||
1212 | <column name="options" key="in_key"> | |
1213 | <p>Optional. The key that received packets must contain, one of:</p> | |
1214 | ||
1215 | <ul> | |
1216 | <li> | |
1217 | <code>0</code>. The tunnel receives packets with no key or with a | |
1218 | key of 0. This is equivalent to specifying no <ref column="options" | |
1219 | key="in_key"/> at all. | |
1220 | </li> | |
1221 | <li> | |
1222 | A positive 32-bit (for GRE) or 64-bit (for CAPWAP) number. The | |
1223 | tunnel receives only packets with the specified key. | |
1224 | </li> | |
1225 | <li> | |
1226 | The word <code>flow</code>. The tunnel accepts packets with any | |
1227 | key. The key will be placed in the <code>tun_id</code> field for | |
1228 | matching in the flow table. The <code>ovs-ofctl</code> manual page | |
1229 | contains additional information about matching fields in OpenFlow | |
1230 | flows. | |
1231 | </li> | |
1232 | </ul> | |
1233 | ||
1234 | <p> | |
1235 | </p> | |
1236 | </column> | |
1237 | ||
1238 | <column name="options" key="out_key"> | |
1239 | <p>Optional. The key to be set on outgoing packets, one of:</p> | |
1240 | ||
1241 | <ul> | |
1242 | <li> | |
1243 | <code>0</code>. Packets sent through the tunnel will have no key. | |
1244 | This is equivalent to specifying no <ref column="options" | |
1245 | key="out_key"/> at all. | |
1246 | </li> | |
1247 | <li> | |
1248 | A positive 32-bit (for GRE) or 64-bit (for CAPWAP) number. Packets | |
1249 | sent through the tunnel will have the specified key. | |
1250 | </li> | |
1251 | <li> | |
1252 | The word <code>flow</code>. Packets sent through the tunnel will | |
1253 | have the key set using the <code>set_tunnel</code> Nicira OpenFlow | |
1254 | vendor extension (0 is used in the absence of an action). The | |
1255 | <code>ovs-ofctl</code> manual page contains additional information | |
1256 | about the Nicira OpenFlow vendor extensions. | |
1257 | </li> | |
1258 | </ul> | |
1259 | </column> | |
1260 | ||
1261 | <column name="options" key="key"> | |
1262 | Optional. Shorthand to set <code>in_key</code> and | |
1263 | <code>out_key</code> at the same time. | |
1264 | </column> | |
1265 | ||
1266 | <column name="options" key="tos"> | |
1267 | Optional. The value of the ToS bits to be set on the encapsulating | |
1268 | packet. It may also be the word <code>inherit</code>, in which case | |
1269 | the ToS will be copied from the inner packet if it is IPv4 or IPv6 | |
1270 | (otherwise it will be 0). The ECN fields are always inherited. | |
1271 | Default is 0. | |
1272 | </column> | |
1273 | ||
1274 | <column name="options" key="ttl"> | |
1275 | Optional. The TTL to be set on the encapsulating packet. It may also | |
1276 | be the word <code>inherit</code>, in which case the TTL will be copied | |
1277 | from the inner packet if it is IPv4 or IPv6 (otherwise it will be the | |
1278 | system default, typically 64). Default is the system default TTL. | |
1279 | </column> | |
1280 | ||
f9e5e5b3 | 1281 | <column name="options" key="df_inherit" type='{"type": "boolean"}'> |
3fd8d445 BP |
1282 | Optional. If enabled, the Don't Fragment bit will be copied from the |
1283 | inner IP headers (those of the encapsulated traffic) to the outer | |
1284 | (tunnel) headers. Default is disabled; set to <code>true</code> to | |
1285 | enable. | |
1286 | </column> | |
1287 | ||
f9e5e5b3 BP |
1288 | <column name="options" key="df_default" |
1289 | type='{"type": "boolean"}'> | |
3fd8d445 BP |
1290 | Optional. If enabled, the Don't Fragment bit will be set by default on |
1291 | tunnel headers if the <code>df_inherit</code> option is not set, or if | |
1292 | the encapsulated packet is not IP. Default is enabled; set to | |
1293 | <code>false</code> to disable. | |
1294 | </column> | |
1295 | ||
f9e5e5b3 | 1296 | <column name="options" key="pmtud" type='{"type": "boolean"}'> |
3fd8d445 BP |
1297 | Optional. Enable tunnel path MTU discovery. If enabled ``ICMP |
1298 | Destination Unreachable - Fragmentation Needed'' messages will be | |
1299 | generated for IPv4 packets with the DF bit set and IPv6 packets above | |
1300 | the minimum MTU if the packet size exceeds the path MTU minus the size | |
1301 | of the tunnel headers. Note that this option causes behavior that is | |
1302 | typically reserved for routers and therefore is not entirely in | |
1303 | compliance with the IEEE 802.1D specification for bridges. Default is | |
1304 | enabled; set to <code>false</code> to disable. | |
1305 | </column> | |
1306 | ||
1307 | <group title="Tunnel Options: gre only"> | |
1308 | <p> | |
1309 | Only <code>gre</code> interfaces support these options. | |
1310 | </p> | |
1311 | ||
f9e5e5b3 | 1312 | <column name="options" key="header_cache" type='{"type": "boolean"}'> |
3fd8d445 BP |
1313 | Enable caching of tunnel headers and the output path. This can lead |
1314 | to a significant performance increase without changing behavior. In | |
1315 | general it should not be necessary to adjust this setting. However, | |
1316 | the caching can bypass certain components of the IP stack (such as | |
1317 | <code>iptables</code>) and it may be useful to disable it if these | |
1318 | features are required or as a debugging measure. Default is enabled, | |
1319 | set to <code>false</code> to disable. | |
1320 | </column> | |
1321 | </group> | |
1322 | ||
1323 | <group title="Tunnel Options: gre and ipsec_gre only"> | |
1324 | <p> | |
1325 | Only <code>gre</code> and <code>ipsec_gre</code> interfaces support | |
1326 | these options. | |
1327 | </p> | |
1328 | ||
f9e5e5b3 | 1329 | <column name="options" key="csum" type='{"type": "boolean"}'> |
3fd8d445 BP |
1330 | <p> |
1331 | Optional. Compute GRE checksums on outgoing packets. Default is | |
1332 | disabled, set to <code>true</code> to enable. Checksums present on | |
1333 | incoming packets will be validated regardless of this setting. | |
1334 | </p> | |
1335 | ||
1336 | <p> | |
1337 | GRE checksums impose a significant performance penalty because they | |
1338 | cover the entire packet. The encapsulated L3, L4, and L7 packet | |
1339 | contents typically have their own checksums, so this additional | |
1340 | checksum only adds value for the GRE and encapsulated L2 headers. | |
1341 | </p> | |
1342 | ||
1343 | <p> | |
1344 | This option is supported for <code>ipsec_gre</code>, but not useful | |
1345 | because GRE checksums are weaker than, and redundant with, IPsec | |
1346 | payload authentication. | |
1347 | </p> | |
1348 | </column> | |
1349 | </group> | |
1350 | ||
1351 | <group title="Tunnel Options: ipsec_gre only"> | |
1352 | <p> | |
1353 | Only <code>ipsec_gre</code> interfaces support these options. | |
1354 | </p> | |
1355 | ||
1356 | <column name="options" key="peer_cert"> | |
1357 | Required for certificate authentication. A string containing the | |
1358 | peer's certificate in PEM format. Additionally the host's | |
1359 | certificate must be specified with the <code>certificate</code> | |
1360 | option. | |
1361 | </column> | |
1362 | ||
1363 | <column name="options" key="certificate"> | |
1364 | Required for certificate authentication. The name of a PEM file | |
1365 | containing a certificate that will be presented to the peer during | |
1366 | authentication. | |
1367 | </column> | |
1368 | ||
1369 | <column name="options" key="private_key"> | |
1370 | Optional for certificate authentication. The name of a PEM file | |
1371 | containing the private key associated with <code>certificate</code>. | |
1372 | If <code>certificate</code> contains the private key, this option may | |
1373 | be omitted. | |
1374 | </column> | |
1375 | ||
1376 | <column name="options" key="psk"> | |
1377 | Required for pre-shared key authentication. Specifies a pre-shared | |
1378 | key for authentication that must be identical on both sides of the | |
1379 | tunnel. | |
1380 | </column> | |
1381 | </group> | |
1382 | </group> | |
1383 | ||
1384 | <group title="Patch Options"> | |
1385 | <p> | |
1386 | Only <code>patch</code> interfaces support these options. | |
1387 | </p> | |
89365653 | 1388 | |
3fd8d445 BP |
1389 | <column name="options" key="peer"> |
1390 | The <ref column="name"/> of the <ref table="Interface"/> for the other | |
1391 | side of the patch. The named <ref table="Interface"/>'s own | |
1392 | <code>peer</code> option must specify this <ref table="Interface"/>'s | |
1393 | name. That is, the two patch interfaces must have reversed <ref | |
1394 | column="name"/> and <code>peer</code> values. | |
89365653 | 1395 | </column> |
e210037e AE |
1396 | </group> |
1397 | ||
1398 | <group title="Interface Status"> | |
1399 | <p> | |
1400 | Status information about interfaces attached to bridges, updated every | |
1401 | 5 seconds. Not all interfaces have all of these properties; virtual | |
1402 | interfaces don't have a link speed, for example. Non-applicable | |
1403 | columns will have empty values. | |
1404 | </p> | |
1405 | <column name="admin_state"> | |
1406 | <p> | |
1407 | The administrative state of the physical network link. | |
1408 | </p> | |
1409 | </column> | |
1410 | ||
1411 | <column name="link_state"> | |
1412 | <p> | |
0b8024eb BP |
1413 | The observed state of the physical network link. This is ordinarily |
1414 | the link's carrier status. If the interface's <ref table="Port"/> is | |
1415 | a bond configured for miimon monitoring, it is instead the network | |
1416 | link's miimon status. | |
e210037e AE |
1417 | </p> |
1418 | </column> | |
1419 | ||
65c3058c EJ |
1420 | <column name="link_resets"> |
1421 | <p> | |
1422 | The number of times Open vSwitch has observed the | |
1423 | <ref column="link_state"/> of this <ref table="Interface"/> change. | |
1424 | </p> | |
1425 | </column> | |
1426 | ||
e210037e AE |
1427 | <column name="link_speed"> |
1428 | <p> | |
1429 | The negotiated speed of the physical network link. | |
1430 | Valid values are positive integers greater than 0. | |
1431 | </p> | |
1432 | </column> | |
1433 | ||
1434 | <column name="duplex"> | |
1435 | <p> | |
1436 | The duplex mode of the physical network link. | |
1437 | </p> | |
1438 | </column> | |
1439 | ||
1440 | <column name="mtu"> | |
1441 | <p> | |
1442 | The MTU (maximum transmission unit); i.e. the largest | |
1443 | amount of data that can fit into a single Ethernet frame. | |
1444 | The standard Ethernet MTU is 1500 bytes. Some physical media | |
1445 | and many kinds of virtual interfaces can be configured with | |
1446 | higher MTUs. | |
1447 | </p> | |
f915f1a8 BP |
1448 | <p> |
1449 | This column will be empty for an interface that does not | |
1450 | have an MTU as, for example, some kinds of tunnels do not. | |
1451 | </p> | |
e210037e | 1452 | </column> |
573c1db9 | 1453 | |
3fd8d445 BP |
1454 | <column name="lacp_current"> |
1455 | Boolean value indicating LACP status for this interface. If true, this | |
1456 | interface has current LACP information about its LACP partner. This | |
1457 | information may be used to monitor the health of interfaces in a LACP | |
1458 | enabled port. This column will be empty if LACP is not enabled. | |
1459 | </column> | |
1460 | ||
573c1db9 | 1461 | <column name="status"> |
3fd8d445 BP |
1462 | Key-value pairs that report port status. Supported status values are |
1463 | <ref column="type"/>-dependent; some interfaces may not have a valid | |
1464 | <ref column="status" key="driver_name"/>, for example. | |
1465 | </column> | |
1466 | ||
1467 | <column name="status" key="driver_name"> | |
1468 | The name of the device driver controlling the network adapter. | |
1469 | </column> | |
1470 | ||
1471 | <column name="status" key="driver_version"> | |
1472 | The version string of the device driver controlling the network | |
1473 | adapter. | |
1474 | </column> | |
1475 | ||
1476 | <column name="status" key="firmware_version"> | |
1477 | The version string of the network adapter's firmware, if available. | |
1478 | </column> | |
1479 | ||
1480 | <column name="status" key="source_ip"> | |
1481 | The source IP address used for an IPv4 tunnel end-point, such as | |
1482 | <code>gre</code> or <code>capwap</code>. | |
573c1db9 | 1483 | </column> |
3fd8d445 BP |
1484 | |
1485 | <column name="status" key="tunnel_egress_iface"> | |
1486 | Egress interface for tunnels. Currently only relevant for GRE and | |
1487 | CAPWAP tunnels. On Linux systems, this column will show the name of | |
1488 | the interface which is responsible for routing traffic destined for the | |
1489 | configured <ref column="options" key="remote_ip"/>. This could be an | |
1490 | internal interface such as a bridge port. | |
1491 | </column> | |
1492 | ||
f9e5e5b3 BP |
1493 | <column name="status" key="tunnel_egress_iface_carrier" |
1494 | type='{"type": "string", "enum": ["set", ["down", "up"]]}'> | |
1495 | Whether carrier is detected on <ref column="status" | |
1496 | key="tunnel_egress_iface"/>. | |
3fd8d445 BP |
1497 | </column> |
1498 | </group> | |
1499 | ||
1500 | <group title="Statistics"> | |
1501 | <p> | |
1502 | Key-value pairs that report interface statistics. The current | |
1503 | implementation updates these counters periodically. Future | |
1504 | implementations may update them when an interface is created, when they | |
1505 | are queried (e.g. using an OVSDB <code>select</code> operation), and | |
1506 | just before an interface is deleted due to virtual interface hot-unplug | |
1507 | or VM shutdown, and perhaps at other times, but not on any regular | |
1508 | periodic basis. | |
1509 | </p> | |
1510 | <p> | |
1511 | These are the same statistics reported by OpenFlow in its <code>struct | |
1512 | ofp_port_stats</code> structure. If an interface does not support a | |
1513 | given statistic, then that pair is omitted. | |
1514 | </p> | |
1515 | <group title="Statistics: Successful transmit and receive counters"> | |
1516 | <column name="statistics" key="rx_packets"> | |
1517 | Number of received packets. | |
1518 | </column> | |
1519 | <column name="statistics" key="rx_bytes"> | |
1520 | Number of received bytes. | |
1521 | </column> | |
1522 | <column name="statistics" key="tx_packets"> | |
1523 | Number of transmitted packets. | |
1524 | </column> | |
1525 | <column name="statistics" key="tx_bytes"> | |
1526 | Number of transmitted bytes. | |
1527 | </column> | |
1528 | </group> | |
1529 | <group title="Statistics: Receive errors"> | |
1530 | <column name="statistics" key="rx_dropped"> | |
1531 | Number of packets dropped by RX. | |
1532 | </column> | |
1533 | <column name="statistics" key="rx_frame_err"> | |
1534 | Number of frame alignment errors. | |
1535 | </column> | |
1536 | <column name="statistics" key="rx_over_err"> | |
1537 | Number of packets with RX overrun. | |
1538 | </column> | |
1539 | <column name="statistics" key="rx_crc_err"> | |
1540 | Number of CRC errors. | |
1541 | </column> | |
1542 | <column name="statistics" key="rx_errors"> | |
1543 | Total number of receive errors, greater than or equal to the sum of | |
1544 | the above. | |
1545 | </column> | |
1546 | </group> | |
1547 | <group title="Statistics: Transmit errors"> | |
1548 | <column name="statistics" key="tx_dropped"> | |
1549 | Number of packets dropped by TX. | |
1550 | </column> | |
1551 | <column name="statistics" key="collisions"> | |
1552 | Number of collisions. | |
1553 | </column> | |
1554 | <column name="statistics" key="tx_errors"> | |
1555 | Total number of transmit errors, greater than or equal to the sum of | |
1556 | the above. | |
1557 | </column> | |
1558 | </group> | |
89365653 BP |
1559 | </group> |
1560 | ||
1561 | <group title="Ingress Policing"> | |
3f5d8c02 BP |
1562 | <p> |
1563 | These settings control ingress policing for packets received on this | |
1564 | interface. On a physical interface, this limits the rate at which | |
1565 | traffic is allowed into the system from the outside; on a virtual | |
1566 | interface (one connected to a virtual machine), this limits the rate at | |
1567 | which the VM is able to transmit. | |
1568 | </p> | |
1569 | <p> | |
1570 | Policing is a simple form of quality-of-service that simply drops | |
1571 | packets received in excess of the configured rate. Due to its | |
1572 | simplicity, policing is usually less accurate and less effective than | |
1573 | egress QoS (which is configured using the <ref table="QoS"/> and <ref | |
1574 | table="Queue"/> tables). | |
1575 | </p> | |
1576 | <p> | |
1577 | Policing is currently implemented only on Linux. The Linux | |
1578 | implementation uses a simple ``token bucket'' approach: | |
1579 | </p> | |
1580 | <ul> | |
1581 | <li> | |
1582 | The size of the bucket corresponds to <ref | |
1583 | column="ingress_policing_burst"/>. Initially the bucket is full. | |
1584 | </li> | |
1585 | <li> | |
1586 | Whenever a packet is received, its size (converted to tokens) is | |
1587 | compared to the number of tokens currently in the bucket. If the | |
1588 | required number of tokens are available, they are removed and the | |
1589 | packet is forwarded. Otherwise, the packet is dropped. | |
1590 | </li> | |
1591 | <li> | |
1592 | Whenever it is not full, the bucket is refilled with tokens at the | |
1593 | rate specified by <ref column="ingress_policing_rate"/>. | |
1594 | </li> | |
1595 | </ul> | |
1596 | <p> | |
1597 | Policing interacts badly with some network protocols, and especially | |
1598 | with fragmented IP packets. Suppose that there is enough network | |
1599 | activity to keep the bucket nearly empty all the time. Then this token | |
1600 | bucket algorithm will forward a single packet every so often, with the | |
1601 | period depending on packet size and on the configured rate. All of the | |
1602 | fragments of an IP packets are normally transmitted back-to-back, as a | |
1603 | group. In such a situation, therefore, only one of these fragments | |
1604 | will be forwarded and the rest will be dropped. IP does not provide | |
1605 | any way for the intended recipient to ask for only the remaining | |
1606 | fragments. In such a case there are two likely possibilities for what | |
1607 | will happen next: either all of the fragments will eventually be | |
1608 | retransmitted (as TCP will do), in which case the same problem will | |
1609 | recur, or the sender will not realize that its packet has been dropped | |
1610 | and data will simply be lost (as some UDP-based protocols will do). | |
1611 | Either way, it is possible that no forward progress will ever occur. | |
1612 | </p> | |
1613 | <column name="ingress_policing_rate"> | |
1614 | <p> | |
1615 | Maximum rate for data received on this interface, in kbps. Data | |
1616 | received faster than this rate is dropped. Set to <code>0</code> | |
1617 | (the default) to disable policing. | |
1618 | </p> | |
1619 | </column> | |
1620 | ||
89365653 BP |
1621 | <column name="ingress_policing_burst"> |
1622 | <p>Maximum burst size for data received on this interface, in kb. The | |
3fd8d445 BP |
1623 | default burst size if set to <code>0</code> is 1000 kb. This value |
1624 | has no effect if <ref column="ingress_policing_rate"/> | |
1625 | is <code>0</code>.</p> | |
3f5d8c02 BP |
1626 | <p> |
1627 | Specifying a larger burst size lets the algorithm be more forgiving, | |
1628 | which is important for protocols like TCP that react severely to | |
1629 | dropped packets. The burst size should be at least the size of the | |
1630 | interface's MTU. Specifying a value that is numerically at least as | |
1631 | large as 10% of <ref column="ingress_policing_rate"/> helps TCP come | |
1632 | closer to achieving the full rate. | |
1633 | </p> | |
89365653 BP |
1634 | </column> |
1635 | </group> | |
1636 | ||
93b8df38 EJ |
1637 | <group title="Connectivity Fault Management"> |
1638 | <p> | |
1639 | 802.1ag Connectivity Fault Management (CFM) allows a group of | |
1640 | Maintenance Points (MPs) called a Maintenance Association (MA) to | |
1641 | detect connectivity problems with each other. MPs within a MA should | |
1642 | have complete and exclusive interconnectivity. This is verified by | |
1643 | occasionally broadcasting Continuity Check Messages (CCMs) at a | |
1644 | configurable transmission interval. | |
1645 | </p> | |
1646 | ||
144216a3 EJ |
1647 | <p> |
1648 | According to the 802.1ag specification, each Maintenance Point should | |
1649 | be configured out-of-band with a list of Remote Maintenance Points it | |
1650 | should have connectivity to. Open vSwitch differs from the | |
1651 | specification in this area. It simply assumes the link is faulted if | |
1652 | no Remote Maintenance Points are reachable, and considers it not | |
1653 | faulted otherwise. | |
1654 | </p> | |
1655 | ||
93b8df38 EJ |
1656 | <column name="cfm_mpid"> |
1657 | A Maintenance Point ID (MPID) uniquely identifies each endpoint within | |
1658 | a Maintenance Association. The MPID is used to identify this endpoint | |
1659 | to other Maintenance Points in the MA. Each end of a link being | |
1660 | monitored should have a different MPID. Must be configured to enable | |
1661 | CFM on this <ref table="Interface"/>. | |
1662 | </column> | |
b31bcf60 | 1663 | |
93b8df38 | 1664 | <column name="cfm_fault"> |
144216a3 EJ |
1665 | <p> |
1666 | Indicates a connectivity fault triggered by an inability to receive | |
1667 | heartbeats from any remote endpoint. When a fault is triggered on | |
1668 | <ref table="Interface"/>s participating in bonds, they will be | |
1669 | disabled. | |
1670 | </p> | |
1671 | <p> | |
1672 | Faults can be triggered for several reasons. Most importantly they | |
1673 | are triggered when no CCMs are received for a period of 3.5 times the | |
1674 | transmission interval. Faults are also triggered when any CCMs | |
1675 | indicate that a Remote Maintenance Point is not receiving CCMs but | |
1676 | able to send them. Finally, a fault is triggered if a CCM is | |
1677 | received which indicates unexpected configuration. Notably, this | |
1678 | case arises when a CCM is received which advertises the local MPID. | |
1679 | </p> | |
93b8df38 | 1680 | </column> |
a5faa982 EJ |
1681 | |
1682 | <column name="cfm_remote_mpids"> | |
1683 | When CFM is properly configured, Open vSwitch will occasionally | |
1684 | receive CCM broadcasts. These broadcasts contain the MPID of the | |
1685 | sending Maintenance Point. The list of MPIDs from which this | |
1686 | <ref table="Interface"/> is receiving broadcasts from is regularly | |
1687 | collected and written to this column. | |
1688 | </column> | |
3fd8d445 | 1689 | |
f9e5e5b3 BP |
1690 | <column name="other_config" key="cfm_interval" |
1691 | type='{"type": "integer"}'> | |
3fd8d445 BP |
1692 | The interval, in milliseconds, between transmissions of CFM heartbeats. |
1693 | Three missed heartbeat receptions indicate a connectivity fault. | |
1694 | Defaults to 1000. | |
1695 | </column> | |
1696 | ||
f9e5e5b3 BP |
1697 | <column name="other_config" key="cfm_extended" |
1698 | type='{"type": "boolean"}'> | |
3fd8d445 BP |
1699 | When <code>true</code>, the CFM module operates in extended mode. This |
1700 | causes it to use a nonstandard destination address to avoid conflicting | |
1701 | with compliant implementations which may be running concurrently on the | |
1702 | network. Furthermore, extended mode increases the accuracy of the | |
1703 | <code>cfm_interval</code> configuration parameter by breaking wire | |
1704 | compatibility with 802.1ag compliant implementations. Defaults to | |
167e393b | 1705 | <code>false</code>. |
3fd8d445 | 1706 | </column> |
dae57238 BP |
1707 | <column name="other_config" key="cfm_opstate" |
1708 | type='{"type": "string", "enum": ["set", ["down", "up"]]}'> | |
86dc6501 EJ |
1709 | When <code>down</code>, the CFM module marks all CCMs it generates as |
1710 | operationally down without triggering a fault. This allows remote | |
1711 | maintenance points to choose not to forward traffic to the | |
1712 | <ref table="Interface"/> on which this CFM module is running. | |
1713 | Currently, in Open vSwitch, the opdown bit of CCMs affects | |
1714 | <ref table="Interface"/>s participating in bonds, and the bundle | |
1715 | OpenFlow action. This setting is ignored when CFM is not in extended | |
1716 | mode. Defaults to <code>up</code>. | |
1717 | </column> | |
75a4ead1 EJ |
1718 | |
1719 | <column name="other_config" key="cfm_ccm_vlan" | |
1720 | type='{"type": "integer", "minInteger": 1, "maxInteger": 4095}'> | |
1721 | When set, the CFM module will apply a VLAN tag to all CCMs it generates | |
1722 | with the given value. | |
1723 | </column> | |
1724 | ||
93b8df38 EJ |
1725 | </group> |
1726 | ||
3fd8d445 | 1727 | <group title="Bonding Configuration"> |
f9e5e5b3 BP |
1728 | <column name="other_config" key="bond-stable-id" |
1729 | type='{"type": "integer", "minInteger": 1}'> | |
1730 | Used in <code>stable</code> bond mode to make slave | |
3fd8d445 BP |
1731 | selection decisions. Allocating <ref column="other_config" |
1732 | key="bond-stable-id"/> values consistently across interfaces | |
1733 | participating in a bond will guarantee consistent slave selection | |
1734 | decisions across <code>ovs-vswitchd</code> instances when using | |
1735 | <code>stable</code> bonding mode. | |
1736 | </column> | |
93b8df38 | 1737 | |
f9e5e5b3 BP |
1738 | <column name="other_config" key="lacp-port-id" |
1739 | type='{"type": "integer", "minInteger": 1, "maxInteger": 65535}'> | |
3fd8d445 BP |
1740 | The LACP port ID of this <ref table="Interface"/>. Port IDs are |
1741 | used in LACP negotiations to identify individual ports | |
f9e5e5b3 | 1742 | participating in a bond. |
a8172aa3 EJ |
1743 | </column> |
1744 | ||
f9e5e5b3 BP |
1745 | <column name="other_config" key="lacp-port-priority" |
1746 | type='{"type": "integer", "minInteger": 1, "maxInteger": 65535}'> | |
3fd8d445 BP |
1747 | The LACP port priority of this <ref table="Interface"/>. In LACP |
1748 | negotiations <ref table="Interface"/>s with numerically lower | |
f9e5e5b3 | 1749 | priorities are preferred for aggregation. |
89365653 | 1750 | </column> |
018f1525 | 1751 | |
f9e5e5b3 BP |
1752 | <column name="other_config" key="lacp-aggregation-key" |
1753 | type='{"type": "integer", "minInteger": 1, "maxInteger": 65535}'> | |
3fd8d445 BP |
1754 | The LACP aggregation key of this <ref table="Interface"/>. <ref |
1755 | table="Interface"/>s with different aggregation keys may not be active | |
f9e5e5b3 | 1756 | within a given <ref table="Port"/> at the same time. |
a3acf0b0 | 1757 | </column> |
3fd8d445 | 1758 | </group> |
a3acf0b0 | 1759 | |
3fd8d445 BP |
1760 | <group title="Virtual Machine Identifiers"> |
1761 | <p> | |
1762 | These key-value pairs specifically apply to an interface that | |
1763 | represents a virtual Ethernet interface connected to a virtual | |
1764 | machine. These key-value pairs should not be present for other types | |
1765 | of interfaces. Keys whose names end in <code>-uuid</code> have | |
1766 | values that uniquely identify the entity in question. For a Citrix | |
1767 | XenServer hypervisor, these values are UUIDs in RFC 4122 format. | |
1768 | Other hypervisors may use other formats. | |
1769 | </p> | |
1770 | ||
1771 | <column name="external_ids" key="attached-mac"> | |
1772 | The MAC address programmed into the ``virtual hardware'' for this | |
1773 | interface, in the form | |
1774 | <var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>:<var>xx</var>. | |
1775 | For Citrix XenServer, this is the value of the <code>MAC</code> field | |
1776 | in the VIF record for this interface. | |
1777 | </column> | |
1778 | ||
1779 | <column name="external_ids" key="iface-id"> | |
1780 | A system-unique identifier for the interface. On XenServer, this will | |
1781 | commonly be the same as <ref column="external_ids" key="xs-vif-uuid"/>. | |
1782 | </column> | |
1783 | ||
1784 | <column name="external_ids" key="xs-vif-uuid"> | |
1785 | The virtual interface associated with this interface. | |
1786 | </column> | |
1787 | ||
1788 | <column name="external_ids" key="xs-network-uuid"> | |
1789 | The virtual network to which this interface is attached. | |
1790 | </column> | |
1791 | ||
1792 | <column name="external_ids" key="xs-vm-uuid"> | |
1793 | The VM to which this interface belongs. | |
018f1525 | 1794 | </column> |
89365653 | 1795 | </group> |
3fd8d445 | 1796 | |
52a90c29 BP |
1797 | <group title="VLAN Splinters"> |
1798 | <p> | |
1799 | The ``VLAN splinters'' feature increases Open vSwitch compatibility | |
1800 | with buggy network drivers in old versions of Linux that do not | |
1801 | properly support VLANs when VLAN devices are not used, at some cost | |
1802 | in memory and performance. | |
1803 | </p> | |
1804 | ||
1805 | <p> | |
1806 | When VLAN splinters are enabled on a particular interface, Open vSwitch | |
1807 | creates a VLAN device for each in-use VLAN. For sending traffic tagged | |
1808 | with a VLAN on the interface, it substitutes the VLAN device. Traffic | |
1809 | received on the VLAN device is treated as if it had been received on | |
1810 | the interface on the particular VLAN. | |
1811 | </p> | |
1812 | ||
1813 | <p> | |
1814 | VLAN splinters consider a VLAN to be in use if: | |
1815 | </p> | |
1816 | ||
1817 | <ul> | |
45c580a3 BP |
1818 | <li> |
1819 | The VLAN is the <ref table="Port" column="tag"/> value in any <ref | |
1820 | table="Port"/> record. | |
1821 | </li> | |
1822 | ||
52a90c29 BP |
1823 | <li> |
1824 | The VLAN is listed within the <ref table="Port" column="trunks"/> | |
1825 | column of the <ref table="Port"/> record of an interface on which | |
1826 | VLAN splinters are enabled. | |
1827 | ||
1828 | An empty <ref table="Port" column="trunks"/> does not influence the | |
1829 | in-use VLANs: creating 4,096 VLAN devices is impractical because it | |
1830 | will exceed the current 1,024 port per datapath limit. | |
1831 | </li> | |
1832 | ||
1833 | <li> | |
1834 | An OpenFlow flow within any bridge matches the VLAN. | |
1835 | </li> | |
1836 | </ul> | |
1837 | ||
1838 | <p> | |
1839 | The same set of in-use VLANs applies to every interface on which VLAN | |
1840 | splinters are enabled. That is, the set is not chosen separately for | |
1841 | each interface but selected once as the union of all in-use VLANs based | |
1842 | on the rules above. | |
1843 | </p> | |
1844 | ||
1845 | <p> | |
1846 | It does not make sense to enable VLAN splinters on an interface for an | |
1847 | access port, or on an interface that is not a physical port. | |
1848 | </p> | |
1849 | ||
1850 | <p> | |
1851 | VLAN splinters are deprecated. When broken device drivers are no | |
1852 | longer in widespread use, we will delete this feature. | |
1853 | </p> | |
1854 | ||
1855 | <column name="other_config" key="enable-vlan-splinters" | |
1856 | type='{"type": "boolean"}'> | |
1857 | <p> | |
1858 | Set to <code>true</code> to enable VLAN splinters on this interface. | |
1859 | Defaults to <code>false</code>. | |
1860 | </p> | |
1861 | ||
1862 | <p> | |
1863 | VLAN splinters increase kernel and userspace memory overhead, so do | |
1864 | not use them unless they are needed. | |
1865 | </p> | |
1866 | </column> | |
1867 | </group> | |
1868 | ||
3fd8d445 BP |
1869 | <group title="Common Columns"> |
1870 | The overall purpose of these columns is described under <code>Common | |
1871 | Columns</code> at the beginning of this document. | |
1872 | ||
1873 | <column name="other_config"/> | |
1874 | <column name="external_ids"/> | |
1875 | </group> | |
89365653 BP |
1876 | </table> |
1877 | ||
254750ce BP |
1878 | <table name="Flow_Table" title="OpenFlow table configuration"> |
1879 | <p>Configuration for a particular OpenFlow table.</p> | |
1880 | ||
1881 | <column name="name"> | |
1882 | The table's name. Set this column to change the name that controllers | |
1883 | will receive when they request table statistics, e.g. <code>ovs-ofctl | |
1884 | dump-tables</code>. The name does not affect switch behavior. | |
1885 | </column> | |
1886 | ||
1887 | <column name="flow_limit"> | |
1888 | If set, limits the number of flows that may be added to the table. Open | |
1889 | vSwitch may limit the number of flows in a table for other reasons, | |
1890 | e.g. due to hardware limitations or for resource availability or | |
1891 | performance reasons. | |
1892 | </column> | |
1893 | ||
1894 | <column name="overflow_policy"> | |
1895 | <p> | |
1896 | Controls the switch's behavior when an OpenFlow flow table modification | |
1897 | request would add flows in excess of <ref column="flow_limit"/>. The | |
1898 | supported values are: | |
1899 | </p> | |
1900 | ||
1901 | <dl> | |
1902 | <dt><code>refuse</code></dt> | |
1903 | <dd> | |
1904 | Refuse to add the flow or flows. This is also the default policy | |
1905 | when <ref column="overflow_policy"/> is unset. | |
1906 | </dd> | |
1907 | ||
1908 | <dt><code>evict</code></dt> | |
1909 | <dd> | |
1910 | Delete the flow that will expire soonest. See <ref column="groups"/> | |
1911 | for details. | |
1912 | </dd> | |
1913 | </dl> | |
1914 | </column> | |
1915 | ||
1916 | <column name="groups"> | |
1917 | <p> | |
1918 | When <ref column="overflow_policy"/> is <code>evict</code>, this | |
1919 | controls how flows are chosen for eviction when the flow table would | |
1920 | otherwise exceed <ref column="flow_limit"/> flows. Its value is a set | |
1921 | of NXM fields or sub-fields, each of which takes one of the forms | |
1922 | <code><var>field</var>[]</code> or | |
1923 | <code><var>field</var>[<var>start</var>..<var>end</var>]</code>, | |
1924 | e.g. <code>NXM_OF_IN_PORT[]</code>. Please see | |
1925 | <code>nicira-ext.h</code> for a complete list of NXM field names. | |
1926 | </p> | |
1927 | ||
1928 | <p> | |
1929 | When a flow must be evicted due to overflow, the flow to evict is | |
1930 | chosen through an approximation of the following algorithm: | |
1931 | </p> | |
1932 | ||
1933 | <ol> | |
1934 | <li> | |
1935 | Divide the flows in the table into groups based on the values of the | |
1936 | specified fields or subfields, so that all of the flows in a given | |
1937 | group have the same values for those fields. If a flow does not | |
1938 | specify a given field, that field's value is treated as 0. | |
1939 | </li> | |
1940 | ||
1941 | <li> | |
1942 | Consider the flows in the largest group, that is, the group that | |
1943 | contains the greatest number of flows. If two or more groups all | |
1944 | have the same largest number of flows, consider the flows in all of | |
1945 | those groups. | |
1946 | </li> | |
1947 | ||
1948 | <li> | |
1949 | Among the flows under consideration, choose the flow that expires | |
1950 | soonest for eviction. | |
1951 | </li> | |
1952 | </ol> | |
1953 | ||
1954 | <p> | |
1955 | The eviction process only considers flows that have an idle timeout or | |
1956 | a hard timeout. That is, eviction never deletes permanent flows. | |
1957 | (Permanent flows do count against <ref column="flow_limit"/>. | |
1958 | </p> | |
1959 | ||
1960 | <p> | |
1961 | Open vSwitch ignores any invalid or unknown field specifications. | |
1962 | </p> | |
1963 | ||
1964 | <p> | |
1965 | When <ref column="overflow_policy"/> is not <code>evict</code>, this | |
1966 | column has no effect. | |
1967 | </p> | |
1968 | </column> | |
1969 | </table> | |
1970 | ||
c1c9c9c4 BP |
1971 | <table name="QoS" title="Quality of Service configuration"> |
1972 | <p>Quality of Service (QoS) configuration for each Port that | |
3fd8d445 | 1973 | references it.</p> |
c1c9c9c4 BP |
1974 | |
1975 | <column name="type"> | |
1976 | <p>The type of QoS to implement. The <ref table="Open_vSwitch" | |
3fd8d445 BP |
1977 | column="capabilities"/> column in the <ref table="Open_vSwitch"/> table |
1978 | identifies the types that a switch actually supports. The currently | |
1979 | defined types are listed below:</p> | |
c1c9c9c4 BP |
1980 | <dl> |
1981 | <dt><code>linux-htb</code></dt> | |
6784cb57 BP |
1982 | <dd> |
1983 | Linux ``hierarchy token bucket'' classifier. See tc-htb(8) (also at | |
1984 | <code>http://linux.die.net/man/8/tc-htb</code>) and the HTB manual | |
1985 | (<code>http://luxik.cdi.cz/~devik/qos/htb/manual/userg.htm</code>) | |
1986 | for information on how this classifier works and how to configure it. | |
1987 | </dd> | |
c1c9c9c4 | 1988 | </dl> |
a339aa81 EJ |
1989 | <dl> |
1990 | <dt><code>linux-hfsc</code></dt> | |
1991 | <dd> | |
1992 | Linux "Hierarchical Fair Service Curve" classifier. | |
1993 | See <code>http://linux-ip.net/articles/hfsc.en/</code> for | |
1994 | information on how this classifier works. | |
1995 | </dd> | |
1996 | </dl> | |
c1c9c9c4 BP |
1997 | </column> |
1998 | ||
1999 | <column name="queues"> | |
2000 | <p>A map from queue numbers to <ref table="Queue"/> records. The | |
3fd8d445 BP |
2001 | supported range of queue numbers depend on <ref column="type"/>. The |
2002 | queue numbers are the same as the <code>queue_id</code> used in | |
2003 | OpenFlow in <code>struct ofp_action_enqueue</code> and other | |
2004 | structures. Queue 0 is used by OpenFlow output actions that do not | |
2005 | specify a specific queue.</p> | |
c1c9c9c4 BP |
2006 | </column> |
2007 | ||
3fd8d445 BP |
2008 | <group title="Configuration for linux-htb and linux-hfsc"> |
2009 | <p> | |
2010 | The <code>linux-htb</code> and <code>linux-hfsc</code> classes support | |
2011 | the following key-value pair: | |
2012 | </p> | |
2013 | ||
f9e5e5b3 | 2014 | <column name="other_config" key="max-rate" type='{"type": "integer"}'> |
3fd8d445 BP |
2015 | Maximum rate shared by all queued traffic, in bit/s. Optional. If not |
2016 | specified, for physical interfaces, the default is the link rate. For | |
2017 | other interfaces or if the link rate cannot be determined, the default | |
2018 | is currently 100 Mbps. | |
2019 | </column> | |
2020 | </group> | |
13008eb3 | 2021 | |
3fd8d445 BP |
2022 | <group title="Common Columns"> |
2023 | The overall purpose of these columns is described under <code>Common | |
2024 | Columns</code> at the beginning of this document. | |
2025 | ||
2026 | <column name="other_config"/> | |
2027 | <column name="external_ids"/> | |
2028 | </group> | |
c1c9c9c4 BP |
2029 | </table> |
2030 | ||
2031 | <table name="Queue" title="QoS output queue."> | |
2032 | <p>A configuration for a port output queue, used in configuring Quality of | |
3fd8d445 BP |
2033 | Service (QoS) features. May be referenced by <ref column="queues" |
2034 | table="QoS"/> column in <ref table="QoS"/> table.</p> | |
13008eb3 | 2035 | |
8b36f51e EJ |
2036 | <column name="dscp"> |
2037 | If set, Open vSwitch will mark all traffic egressing this | |
2038 | <ref table="Queue"/> with the given DSCP bits. Traffic egressing the | |
2039 | default <ref table="Queue"/> is only marked if it was explicitly selected | |
2040 | as the <ref table="Queue"/> at the time the packet was output. If unset, | |
2041 | the DSCP bits of traffic egressing this <ref table="Queue"/> will remain | |
2042 | unchanged. | |
2043 | </column> | |
2044 | ||
3fd8d445 BP |
2045 | <group title="Configuration for linux-htb QoS"> |
2046 | <p> | |
69822b3c EJ |
2047 | <ref table="QoS"/> <ref table="QoS" column="type"/> |
2048 | <code>linux-htb</code> may use <code>queue_id</code>s less than 61440. | |
2049 | It has the following key-value pairs defined. | |
3fd8d445 BP |
2050 | </p> |
2051 | ||
f9e5e5b3 BP |
2052 | <column name="other_config" key="min-rate" |
2053 | type='{"type": "integer", "minInteger": 1}'> | |
3fd8d445 BP |
2054 | Minimum guaranteed bandwidth, in bit/s. |
2055 | </column> | |
2056 | ||
f9e5e5b3 BP |
2057 | <column name="other_config" key="max-rate" |
2058 | type='{"type": "integer", "minInteger": 1}'> | |
3fd8d445 BP |
2059 | Maximum allowed bandwidth, in bit/s. Optional. If specified, the |
2060 | queue's rate will not be allowed to exceed the specified value, even | |
2061 | if excess bandwidth is available. If unspecified, defaults to no | |
2062 | limit. | |
2063 | </column> | |
2064 | ||
f9e5e5b3 BP |
2065 | <column name="other_config" key="burst" |
2066 | type='{"type": "integer", "minInteger": 1}'> | |
3fd8d445 BP |
2067 | Burst size, in bits. This is the maximum amount of ``credits'' that a |
2068 | queue can accumulate while it is idle. Optional. Details of the | |
2069 | <code>linux-htb</code> implementation require a minimum burst size, so | |
2070 | a too-small <code>burst</code> will be silently ignored. | |
2071 | </column> | |
2072 | ||
f9e5e5b3 BP |
2073 | <column name="other_config" key="priority" |
2074 | type='{"type": "integer", "minInteger": 0, "maxInteger": 4294967295}'> | |
2075 | A queue with a smaller <code>priority</code> will receive all the | |
2076 | excess bandwidth that it can use before a queue with a larger value | |
2077 | receives any. Specific priority values are unimportant; only relative | |
2078 | ordering matters. Defaults to 0 if unspecified. | |
3fd8d445 BP |
2079 | </column> |
2080 | </group> | |
2081 | ||
2082 | <group title="Configuration for linux-hfsc QoS"> | |
2083 | <p> | |
69822b3c EJ |
2084 | <ref table="QoS"/> <ref table="QoS" column="type"/> |
2085 | <code>linux-hfsc</code> may use <code>queue_id</code>s less than 61440. | |
2086 | It has the following key-value pairs defined. | |
3fd8d445 BP |
2087 | </p> |
2088 | ||
f9e5e5b3 BP |
2089 | <column name="other_config" key="min-rate" |
2090 | type='{"type": "integer", "minInteger": 1}'> | |
3fd8d445 BP |
2091 | Minimum guaranteed bandwidth, in bit/s. |
2092 | </column> | |
2093 | ||
f9e5e5b3 BP |
2094 | <column name="other_config" key="max-rate" |
2095 | type='{"type": "integer", "minInteger": 1}'> | |
3fd8d445 BP |
2096 | Maximum allowed bandwidth, in bit/s. Optional. If specified, the |
2097 | queue's rate will not be allowed to exceed the specified value, even if | |
2098 | excess bandwidth is available. If unspecified, defaults to no | |
2099 | limit. | |
2100 | </column> | |
2101 | </group> | |
2102 | ||
2103 | <group title="Common Columns"> | |
2104 | The overall purpose of these columns is described under <code>Common | |
2105 | Columns</code> at the beginning of this document. | |
2106 | ||
2107 | <column name="other_config"/> | |
2108 | <column name="external_ids"/> | |
2109 | </group> | |
c1c9c9c4 BP |
2110 | </table> |
2111 | ||
9ae7ddc0 | 2112 | <table name="Mirror" title="Port mirroring."> |
89365653 BP |
2113 | <p>A port mirror within a <ref table="Bridge"/>.</p> |
2114 | <p>A port mirror configures a bridge to send selected frames to special | |
92ada132 | 2115 | ``mirrored'' ports, in addition to their normal destinations. Mirroring |
9ae7ddc0 | 2116 | traffic may also be referred to as SPAN or RSPAN, depending on how |
92ada132 | 2117 | the mirrored traffic is sent.</p> |
89365653 BP |
2118 | |
2119 | <column name="name"> | |
2120 | Arbitrary identifier for the <ref table="Mirror"/>. | |
2121 | </column> | |
2122 | ||
2123 | <group title="Selecting Packets for Mirroring"> | |
3e519d8e BP |
2124 | <p> |
2125 | To be selected for mirroring, a given packet must enter or leave the | |
2126 | bridge through a selected port and it must also be in one of the | |
2127 | selected VLANs. | |
2128 | </p> | |
2129 | ||
939ff267 BP |
2130 | <column name="select_all"> |
2131 | If true, every packet arriving or departing on any port is | |
2132 | selected for mirroring. | |
2133 | </column> | |
2134 | ||
89365653 BP |
2135 | <column name="select_dst_port"> |
2136 | Ports on which departing packets are selected for mirroring. | |
2137 | </column> | |
2138 | ||
2139 | <column name="select_src_port"> | |
939ff267 | 2140 | Ports on which arriving packets are selected for mirroring. |
89365653 BP |
2141 | </column> |
2142 | ||
2143 | <column name="select_vlan"> | |
2144 | VLANs on which packets are selected for mirroring. An empty set | |
2145 | selects packets on all VLANs. | |
2146 | </column> | |
2147 | </group> | |
2148 | ||
2149 | <group title="Mirroring Destination Configuration"> | |
3e519d8e BP |
2150 | <p> |
2151 | These columns are mutually exclusive. Exactly one of them must be | |
2152 | nonempty. | |
2153 | </p> | |
2154 | ||
89365653 | 2155 | <column name="output_port"> |
3e519d8e | 2156 | <p>Output port for selected packets, if nonempty.</p> |
89365653 | 2157 | <p>Specifying a port for mirror output reserves that port exclusively |
92ada132 | 2158 | for mirroring. No frames other than those selected for mirroring |
653fe3a3 | 2159 | via this column |
92ada132 BP |
2160 | will be forwarded to the port, and any frames received on the port |
2161 | will be discarded.</p> | |
2162 | <p> | |
2163 | The output port may be any kind of port supported by Open vSwitch. | |
9ae7ddc0 JP |
2164 | It may be, for example, a physical port (sometimes called SPAN) or a |
2165 | GRE tunnel. | |
92ada132 | 2166 | </p> |
89365653 BP |
2167 | </column> |
2168 | ||
2169 | <column name="output_vlan"> | |
3e519d8e | 2170 | <p>Output VLAN for selected packets, if nonempty.</p> |
89365653 | 2171 | <p>The frames will be sent out all ports that trunk |
3fd8d445 BP |
2172 | <ref column="output_vlan"/>, as well as any ports with implicit VLAN |
2173 | <ref column="output_vlan"/>. When a mirrored frame is sent out a | |
2174 | trunk port, the frame's VLAN tag will be set to | |
2175 | <ref column="output_vlan"/>, replacing any existing tag; when it is | |
2176 | sent out an implicit VLAN port, the frame will not be tagged. This | |
2177 | type of mirroring is sometimes called RSPAN.</p> | |
07817dfe BP |
2178 | <p> |
2179 | The following destination MAC addresses will not be mirrored to a | |
2180 | VLAN to avoid confusing switches that interpret the protocols that | |
2181 | they represent: | |
2182 | </p> | |
2183 | <dl> | |
2184 | <dt><code>01:80:c2:00:00:00</code></dt> | |
2185 | <dd>IEEE 802.1D Spanning Tree Protocol (STP).</dd> | |
2186 | ||
2187 | <dt><code>01:80:c2:00:00:01</code></dt> | |
2188 | <dd>IEEE Pause frame.</dd> | |
2189 | ||
2190 | <dt><code>01:80:c2:00:00:0<var>x</var></code></dt> | |
2191 | <dd>Other reserved protocols.</dd> | |
2192 | ||
2193 | <dt><code>01:00:0c:cc:cc:cc</code></dt> | |
2194 | <dd> | |
2195 | Cisco Discovery Protocol (CDP), VLAN Trunking Protocol (VTP), | |
2196 | Dynamic Trunking Protocol (DTP), Port Aggregation Protocol (PAgP), | |
2197 | and others. | |
2198 | </dd> | |
2199 | ||
2200 | <dt><code>01:00:0c:cc:cc:cd</code></dt> | |
2201 | <dd>Cisco Shared Spanning Tree Protocol PVSTP+.</dd> | |
2202 | ||
2203 | <dt><code>01:00:0c:cd:cd:cd</code></dt> | |
2204 | <dd>Cisco STP Uplink Fast.</dd> | |
2205 | ||
2206 | <dt><code>01:00:0c:00:00:00</code></dt> | |
2207 | <dd>Cisco Inter Switch Link.</dd> | |
2208 | </dl> | |
89365653 | 2209 | <p><em>Please note:</em> Mirroring to a VLAN can disrupt a network that |
3fd8d445 BP |
2210 | contains unmanaged switches. Consider an unmanaged physical switch |
2211 | with two ports: port 1, connected to an end host, and port 2, | |
2212 | connected to an Open vSwitch configured to mirror received packets | |
2213 | into VLAN 123 on port 2. Suppose that the end host sends a packet on | |
2214 | port 1 that the physical switch forwards to port 2. The Open vSwitch | |
2215 | forwards this packet to its destination and then reflects it back on | |
2216 | port 2 in VLAN 123. This reflected packet causes the unmanaged | |
2217 | physical switch to replace the MAC learning table entry, which | |
2218 | correctly pointed to port 1, with one that incorrectly points to port | |
2219 | 2. Afterward, the physical switch will direct packets destined for | |
2220 | the end host to the Open vSwitch on port 2, instead of to the end | |
2221 | host on port 1, disrupting connectivity. If mirroring to a VLAN is | |
2222 | desired in this scenario, then the physical switch must be replaced | |
2223 | by one that learns Ethernet addresses on a per-VLAN basis. In | |
2224 | addition, learning should be disabled on the VLAN containing mirrored | |
2225 | traffic. If this is not done then intermediate switches will learn | |
2226 | the MAC address of each end host from the mirrored traffic. If | |
2227 | packets being sent to that end host are also mirrored, then they will | |
2228 | be dropped since the switch will attempt to send them out the input | |
2229 | port. Disabling learning for the VLAN will cause the switch to | |
2230 | correctly send the packet out all ports configured for that VLAN. If | |
2231 | Open vSwitch is being used as an intermediate switch, learning can be | |
2232 | disabled by adding the mirrored VLAN to <ref column="flood_vlans"/> | |
2233 | in the appropriate <ref table="Bridge"/> table or tables.</p> | |
2234 | <p> | |
2235 | Mirroring to a GRE tunnel has fewer caveats than mirroring to a | |
2236 | VLAN and should generally be preferred. | |
2237 | </p> | |
89365653 BP |
2238 | </column> |
2239 | </group> | |
13008eb3 | 2240 | |
9d24de3b JP |
2241 | <group title="Statistics: Mirror counters"> |
2242 | <p> | |
2243 | Key-value pairs that report mirror statistics. | |
2244 | </p> | |
2245 | <column name="statistics" key="tx_packets"> | |
2246 | Number of packets transmitted through this mirror. | |
2247 | </column> | |
2248 | <column name="statistics" key="tx_bytes"> | |
2249 | Number of bytes transmitted through this mirror. | |
2250 | </column> | |
2251 | </group> | |
2252 | ||
3fd8d445 BP |
2253 | <group title="Common Columns"> |
2254 | The overall purpose of these columns is described under <code>Common | |
2255 | Columns</code> at the beginning of this document. | |
2256 | ||
2257 | <column name="external_ids"/> | |
13008eb3 | 2258 | </group> |
89365653 BP |
2259 | </table> |
2260 | ||
2261 | <table name="Controller" title="OpenFlow controller configuration."> | |
76ce9432 BP |
2262 | <p>An OpenFlow controller.</p> |
2263 | ||
7d674866 BP |
2264 | <p> |
2265 | Open vSwitch supports two kinds of OpenFlow controllers: | |
2266 | </p> | |
299a244b | 2267 | |
7d674866 BP |
2268 | <dl> |
2269 | <dt>Primary controllers</dt> | |
2270 | <dd> | |
2271 | <p> | |
2272 | This is the kind of controller envisioned by the OpenFlow 1.0 | |
2273 | specification. Usually, a primary controller implements a network | |
2274 | policy by taking charge of the switch's flow table. | |
2275 | </p> | |
2276 | ||
2277 | <p> | |
2278 | Open vSwitch initiates and maintains persistent connections to | |
2279 | primary controllers, retrying the connection each time it fails or | |
2280 | drops. The <ref table="Bridge" column="fail_mode"/> column in the | |
2281 | <ref table="Bridge"/> table applies to primary controllers. | |
2282 | </p> | |
2283 | ||
2284 | <p> | |
2285 | Open vSwitch permits a bridge to have any number of primary | |
2286 | controllers. When multiple controllers are configured, Open | |
2287 | vSwitch connects to all of them simultaneously. Because | |
2288 | OpenFlow 1.0 does not specify how multiple controllers | |
2289 | coordinate in interacting with a single switch, more than | |
2290 | one primary controller should be specified only if the | |
2291 | controllers are themselves designed to coordinate with each | |
2292 | other. (The Nicira-defined <code>NXT_ROLE</code> OpenFlow | |
2293 | vendor extension may be useful for this.) | |
2294 | </p> | |
2295 | </dd> | |
2296 | <dt>Service controllers</dt> | |
2297 | <dd> | |
2298 | <p> | |
2299 | These kinds of OpenFlow controller connections are intended for | |
2300 | occasional support and maintenance use, e.g. with | |
2301 | <code>ovs-ofctl</code>. Usually a service controller connects only | |
2302 | briefly to inspect or modify some of a switch's state. | |
2303 | </p> | |
2304 | ||
2305 | <p> | |
2306 | Open vSwitch listens for incoming connections from service | |
2307 | controllers. The service controllers initiate and, if necessary, | |
2308 | maintain the connections from their end. The <ref table="Bridge" | |
2309 | column="fail_mode"/> column in the <ref table="Bridge"/> table does | |
2310 | not apply to service controllers. | |
2311 | </p> | |
2312 | ||
2313 | <p> | |
2314 | Open vSwitch supports configuring any number of service controllers. | |
2315 | </p> | |
2316 | </dd> | |
2317 | </dl> | |
2318 | ||
2319 | <p> | |
2320 | The <ref column="target"/> determines the type of controller. | |
2321 | </p> | |
89365653 BP |
2322 | |
2323 | <group title="Core Features"> | |
2324 | <column name="target"> | |
7d674866 BP |
2325 | <p>Connection method for controller.</p> |
2326 | <p> | |
2327 | The following connection methods are currently supported for primary | |
2328 | controllers: | |
2329 | </p> | |
89365653 BP |
2330 | <dl> |
2331 | <dt><code>ssl:<var>ip</var></code>[<code>:<var>port</var></code>]</dt> | |
2332 | <dd> | |
2333 | <p>The specified SSL <var>port</var> (default: 6633) on the host at | |
7d674866 BP |
2334 | the given <var>ip</var>, which must be expressed as an IP address |
2335 | (not a DNS name). The <ref table="Open_vSwitch" column="ssl"/> | |
2336 | column in the <ref table="Open_vSwitch"/> table must point to a | |
2337 | valid SSL configuration when this form is used.</p> | |
89365653 | 2338 | <p>SSL support is an optional feature that is not always built as |
3fd8d445 | 2339 | part of Open vSwitch.</p> |
89365653 BP |
2340 | </dd> |
2341 | <dt><code>tcp:<var>ip</var></code>[<code>:<var>port</var></code>]</dt> | |
2342 | <dd>The specified TCP <var>port</var> (default: 6633) on the host at | |
3fd8d445 BP |
2343 | the given <var>ip</var>, which must be expressed as an IP address |
2344 | (not a DNS name).</dd> | |
7d674866 BP |
2345 | </dl> |
2346 | <p> | |
2347 | The following connection methods are currently supported for service | |
2348 | controllers: | |
2349 | </p> | |
2350 | <dl> | |
2351 | <dt><code>pssl:</code>[<var>port</var>][<code>:<var>ip</var></code>]</dt> | |
2352 | <dd> | |
2353 | <p> | |
2354 | Listens for SSL connections on the specified TCP <var>port</var> | |
2355 | (default: 6633). If <var>ip</var>, which must be expressed as an | |
2356 | IP address (not a DNS name), is specified, then connections are | |
2357 | restricted to the specified local IP address. | |
2358 | </p> | |
2359 | <p> | |
2360 | The <ref table="Open_vSwitch" column="ssl"/> column in the <ref | |
2361 | table="Open_vSwitch"/> table must point to a valid SSL | |
2362 | configuration when this form is used. | |
2363 | </p> | |
2364 | <p>SSL support is an optional feature that is not always built as | |
3fd8d445 | 2365 | part of Open vSwitch.</p> |
7d674866 BP |
2366 | </dd> |
2367 | <dt><code>ptcp:</code>[<var>port</var>][<code>:<var>ip</var></code>]</dt> | |
2368 | <dd> | |
2369 | Listens for connections on the specified TCP <var>port</var> | |
2370 | (default: 6633). If <var>ip</var>, which must be expressed as an | |
2371 | IP address (not a DNS name), is specified, then connections are | |
2372 | restricted to the specified local IP address. | |
2373 | </dd> | |
89365653 | 2374 | </dl> |
9a3f4a49 | 2375 | <p>When multiple controllers are configured for a single bridge, the |
3fd8d445 BP |
2376 | <ref column="target"/> values must be unique. Duplicate |
2377 | <ref column="target"/> values yield unspecified results.</p> | |
89365653 BP |
2378 | </column> |
2379 | ||
2380 | <column name="connection_mode"> | |
9a3f4a49 JP |
2381 | <p>If it is specified, this setting must be one of the following |
2382 | strings that describes how Open vSwitch contacts this OpenFlow | |
2383 | controller over the network:</p> | |
2384 | ||
2385 | <dl> | |
2386 | <dt><code>in-band</code></dt> | |
2387 | <dd>In this mode, this controller's OpenFlow traffic travels over the | |
3fd8d445 BP |
2388 | bridge associated with the controller. With this setting, Open |
2389 | vSwitch allows traffic to and from the controller regardless of the | |
2390 | contents of the OpenFlow flow table. (Otherwise, Open vSwitch | |
2391 | would never be able to connect to the controller, because it did | |
2392 | not have a flow to enable it.) This is the most common connection | |
2393 | mode because it is not necessary to maintain two independent | |
2394 | networks.</dd> | |
9a3f4a49 JP |
2395 | <dt><code>out-of-band</code></dt> |
2396 | <dd>In this mode, OpenFlow traffic uses a control network separate | |
3fd8d445 BP |
2397 | from the bridge associated with this controller, that is, the |
2398 | bridge does not use any of its own network devices to communicate | |
2399 | with the controller. The control network must be configured | |
2400 | separately, before or after <code>ovs-vswitchd</code> is started. | |
9a3f4a49 JP |
2401 | </dd> |
2402 | </dl> | |
76ce9432 | 2403 | |
195c8086 | 2404 | <p>If not specified, the default is implementation-specific.</p> |
89365653 BP |
2405 | </column> |
2406 | </group> | |
2407 | ||
2408 | <group title="Controller Failure Detection and Handling"> | |
2409 | <column name="max_backoff"> | |
2410 | Maximum number of milliseconds to wait between connection attempts. | |
2411 | Default is implementation-specific. | |
2412 | </column> | |
2413 | ||
2414 | <column name="inactivity_probe"> | |
2415 | Maximum number of milliseconds of idle time on connection to | |
2416 | controller before sending an inactivity probe message. If Open | |
2417 | vSwitch does not communicate with the controller for the specified | |
2418 | number of seconds, it will send a probe. If a response is not | |
2419 | received for the same additional amount of time, Open vSwitch | |
2420 | assumes the connection has been broken and attempts to reconnect. | |
2bb82bf0 BP |
2421 | Default is implementation-specific. A value of 0 disables |
2422 | inactivity probes. | |
89365653 | 2423 | </column> |
89365653 BP |
2424 | </group> |
2425 | ||
2426 | <group title="OpenFlow Rate Limiting"> | |
3fd8d445 BP |
2427 | <column name="controller_rate_limit"> |
2428 | <p>The maximum rate at which packets in unknown flows will be | |
2429 | forwarded to the OpenFlow controller, in packets per second. This | |
2430 | feature prevents a single bridge from overwhelming the controller. | |
2431 | If not specified, the default is implementation-specific.</p> | |
2432 | <p>In addition, when a high rate triggers rate-limiting, Open | |
2433 | vSwitch queues controller packets for each port and transmits | |
2434 | them to the controller at the configured rate. The number of | |
2435 | queued packets is limited by | |
2436 | the <ref column="controller_burst_limit"/> value. The packet | |
2437 | queue is shared fairly among the ports on a bridge.</p><p>Open | |
2438 | vSwitch maintains two such packet rate-limiters per bridge. | |
2439 | One of these applies to packets sent up to the controller | |
2440 | because they do not correspond to any flow. The other applies | |
2441 | to packets sent up to the controller by request through flow | |
2442 | actions. When both rate-limiters are filled with packets, the | |
2443 | actual rate that packets are sent to the controller is up to | |
2444 | twice the specified rate.</p> | |
2445 | </column> | |
2446 | ||
2447 | <column name="controller_burst_limit"> | |
2448 | In conjunction with <ref column="controller_rate_limit"/>, | |
2449 | the maximum number of unused packet credits that the bridge will | |
2450 | allow to accumulate, in packets. If not specified, the default | |
2451 | is implementation-specific. | |
2452 | </column> | |
89365653 BP |
2453 | </group> |
2454 | ||
76ce9432 BP |
2455 | <group title="Additional In-Band Configuration"> |
2456 | <p>These values are considered only in in-band control mode (see | |
3fd8d445 | 2457 | <ref column="connection_mode"/>).</p> |
76ce9432 BP |
2458 | |
2459 | <p>When multiple controllers are configured on a single bridge, there | |
3fd8d445 BP |
2460 | should be only one set of unique values in these columns. If different |
2461 | values are set for these columns in different controllers, the effect | |
2462 | is unspecified.</p> | |
89365653 BP |
2463 | |
2464 | <column name="local_ip"> | |
76ce9432 BP |
2465 | The IP address to configure on the local port, |
2466 | e.g. <code>192.168.0.123</code>. If this value is unset, then | |
2467 | <ref column="local_netmask"/> and <ref column="local_gateway"/> are | |
2468 | ignored. | |
89365653 BP |
2469 | </column> |
2470 | ||
2471 | <column name="local_netmask"> | |
76ce9432 BP |
2472 | The IP netmask to configure on the local port, |
2473 | e.g. <code>255.255.255.0</code>. If <ref column="local_ip"/> is set | |
2474 | but this value is unset, then the default is chosen based on whether | |
2475 | the IP address is class A, B, or C. | |
2476 | </column> | |
2477 | ||
2478 | <column name="local_gateway"> | |
2479 | The IP address of the gateway to configure on the local port, as a | |
2480 | string, e.g. <code>192.168.0.1</code>. Leave this column unset if | |
2481 | this network has no gateway. | |
89365653 BP |
2482 | </column> |
2483 | </group> | |
13008eb3 | 2484 | |
bffc0589 AE |
2485 | <group title="Controller Status"> |
2486 | <column name="is_connected"> | |
2487 | <code>true</code> if currently connected to this controller, | |
2488 | <code>false</code> otherwise. | |
2489 | </column> | |
2490 | ||
f9e5e5b3 BP |
2491 | <column name="role" |
2492 | type='{"type": "string", "enum": ["set", ["other", "master", "slave"]]}'> | |
bffc0589 | 2493 | <p>The level of authority this controller has on the associated |
3fd8d445 | 2494 | bridge. Possible values are:</p> |
bffc0589 AE |
2495 | <dl> |
2496 | <dt><code>other</code></dt> | |
2497 | <dd>Allows the controller access to all OpenFlow features.</dd> | |
bffc0589 AE |
2498 | <dt><code>master</code></dt> |
2499 | <dd>Equivalent to <code>other</code>, except that there may be at | |
3fd8d445 BP |
2500 | most one master controller at a time. When a controller configures |
2501 | itself as <code>master</code>, any existing master is demoted to | |
2502 | the <code>slave</code>role.</dd> | |
bffc0589 AE |
2503 | <dt><code>slave</code></dt> |
2504 | <dd>Allows the controller read-only access to OpenFlow features. | |
3fd8d445 BP |
2505 | Attempts to modify the flow table will be rejected with an |
2506 | error. Slave controllers do not receive OFPT_PACKET_IN or | |
2507 | OFPT_FLOW_REMOVED messages, but they do receive OFPT_PORT_STATUS | |
2508 | messages.</dd> | |
bffc0589 AE |
2509 | </dl> |
2510 | </column> | |
2511 | ||
3fd8d445 BP |
2512 | <column name="status" key="last_error"> |
2513 | A human-readable description of the last error on the connection | |
2514 | to the controller; i.e. <code>strerror(errno)</code>. This key | |
2515 | will exist only if an error has occurred. | |
2516 | </column> | |
2517 | ||
f9e5e5b3 BP |
2518 | <column name="status" key="state" |
2519 | type='{"type": "string", "enum": ["set", ["VOID", "BACKOFF", "CONNECTING", "ACTIVE", "IDLE"]]}'> | |
3fd8d445 | 2520 | <p> |
f9e5e5b3 | 2521 | The state of the connection to the controller: |
3fd8d445 | 2522 | </p> |
bffc0589 | 2523 | <dl> |
3fd8d445 BP |
2524 | <dt><code>VOID</code></dt> |
2525 | <dd>Connection is disabled.</dd> | |
2526 | ||
2527 | <dt><code>BACKOFF</code></dt> | |
2528 | <dd>Attempting to reconnect at an increasing period.</dd> | |
2529 | ||
2530 | <dt><code>CONNECTING</code></dt> | |
2531 | <dd>Attempting to connect.</dd> | |
2532 | ||
2533 | <dt><code>ACTIVE</code></dt> | |
2534 | <dd>Connected, remote host responsive.</dd> | |
2535 | ||
2536 | <dt><code>IDLE</code></dt> | |
2537 | <dd>Connection is idle. Waiting for response to keep-alive.</dd> | |
bffc0589 | 2538 | </dl> |
3fd8d445 BP |
2539 | <p> |
2540 | These values may change in the future. They are provided only for | |
2541 | human consumption. | |
2542 | </p> | |
2543 | </column> | |
2544 | ||
f9e5e5b3 BP |
2545 | <column name="status" key="sec_since_connect" |
2546 | type='{"type": "integer", "minInteger": 0}'> | |
3fd8d445 BP |
2547 | The amount of time since this controller last successfully connected to |
2548 | the switch (in seconds). Value is empty if controller has never | |
2549 | successfully connected. | |
bffc0589 | 2550 | </column> |
3fd8d445 | 2551 | |
f9e5e5b3 BP |
2552 | <column name="status" key="sec_since_disconnect" |
2553 | type='{"type": "integer", "minInteger": 1}'> | |
3fd8d445 BP |
2554 | The amount of time since this controller last disconnected from |
2555 | the switch (in seconds). Value is empty if controller has never | |
2556 | disconnected. | |
2557 | </column> | |
2558 | </group> | |
2559 | ||
2560 | <group title="Common Columns"> | |
2561 | The overall purpose of these columns is described under <code>Common | |
2562 | Columns</code> at the beginning of this document. | |
2563 | ||
2564 | <column name="external_ids"/> | |
bffc0589 | 2565 | </group> |
89365653 BP |
2566 | </table> |
2567 | ||
94db5407 BP |
2568 | <table name="Manager" title="OVSDB management connection."> |
2569 | <p> | |
2570 | Configuration for a database connection to an Open vSwitch database | |
2571 | (OVSDB) client. | |
2572 | </p> | |
2573 | ||
2574 | <p> | |
2575 | This table primarily configures the Open vSwitch database | |
2576 | (<code>ovsdb-server</code>), not the Open vSwitch switch | |
2577 | (<code>ovs-vswitchd</code>). The switch does read the table to determine | |
2578 | what connections should be treated as in-band. | |
2579 | </p> | |
2580 | ||
2581 | <p> | |
2582 | The Open vSwitch database server can initiate and maintain active | |
2583 | connections to remote clients. It can also listen for database | |
2584 | connections. | |
2585 | </p> | |
2586 | ||
2587 | <group title="Core Features"> | |
2588 | <column name="target"> | |
2589 | <p>Connection method for managers.</p> | |
2590 | <p> | |
2591 | The following connection methods are currently supported: | |
2592 | </p> | |
2593 | <dl> | |
2594 | <dt><code>ssl:<var>ip</var></code>[<code>:<var>port</var></code>]</dt> | |
2595 | <dd> | |
2596 | <p> | |
2597 | The specified SSL <var>port</var> (default: 6632) on the host at | |
2598 | the given <var>ip</var>, which must be expressed as an IP address | |
2599 | (not a DNS name). The <ref table="Open_vSwitch" column="ssl"/> | |
2600 | column in the <ref table="Open_vSwitch"/> table must point to a | |
2601 | valid SSL configuration when this form is used. | |
2602 | </p> | |
2603 | <p> | |
2604 | SSL support is an optional feature that is not always built as | |
2605 | part of Open vSwitch. | |
2606 | </p> | |
2607 | </dd> | |
2608 | ||
2609 | <dt><code>tcp:<var>ip</var></code>[<code>:<var>port</var></code>]</dt> | |
2610 | <dd> | |
2611 | The specified TCP <var>port</var> (default: 6632) on the host at | |
2612 | the given <var>ip</var>, which must be expressed as an IP address | |
2613 | (not a DNS name). | |
2614 | </dd> | |
2615 | <dt><code>pssl:</code>[<var>port</var>][<code>:<var>ip</var></code>]</dt> | |
2616 | <dd> | |
2617 | <p> | |
2618 | Listens for SSL connections on the specified TCP <var>port</var> | |
2619 | (default: 6632). If <var>ip</var>, which must be expressed as an | |
2620 | IP address (not a DNS name), is specified, then connections are | |
2621 | restricted to the specified local IP address. | |
2622 | </p> | |
2623 | <p> | |
2624 | The <ref table="Open_vSwitch" column="ssl"/> column in the <ref | |
2625 | table="Open_vSwitch"/> table must point to a valid SSL | |
2626 | configuration when this form is used. | |
2627 | </p> | |
2628 | <p> | |
2629 | SSL support is an optional feature that is not always built as | |
2630 | part of Open vSwitch. | |
2631 | </p> | |
2632 | </dd> | |
2633 | <dt><code>ptcp:</code>[<var>port</var>][<code>:<var>ip</var></code>]</dt> | |
2634 | <dd> | |
2635 | Listens for connections on the specified TCP <var>port</var> | |
2636 | (default: 6632). If <var>ip</var>, which must be expressed as an | |
2637 | IP address (not a DNS name), is specified, then connections are | |
2638 | restricted to the specified local IP address. | |
2639 | </dd> | |
2640 | </dl> | |
2641 | <p>When multiple managers are configured, the <ref column="target"/> | |
2642 | values must be unique. Duplicate <ref column="target"/> values yield | |
2643 | unspecified results.</p> | |
2644 | </column> | |
2645 | ||
2646 | <column name="connection_mode"> | |
2647 | <p> | |
2648 | If it is specified, this setting must be one of the following strings | |
2649 | that describes how Open vSwitch contacts this OVSDB client over the | |
2650 | network: | |
2651 | </p> | |
299a244b | 2652 | |
94db5407 BP |
2653 | <dl> |
2654 | <dt><code>in-band</code></dt> | |
2655 | <dd> | |
2656 | In this mode, this connection's traffic travels over a bridge | |
2657 | managed by Open vSwitch. With this setting, Open vSwitch allows | |
2658 | traffic to and from the client regardless of the contents of the | |
2659 | OpenFlow flow table. (Otherwise, Open vSwitch would never be able | |
2660 | to connect to the client, because it did not have a flow to enable | |
2661 | it.) This is the most common connection mode because it is not | |
2662 | necessary to maintain two independent networks. | |
2663 | </dd> | |
2664 | <dt><code>out-of-band</code></dt> | |
2665 | <dd> | |
2666 | In this mode, the client's traffic uses a control network separate | |
2667 | from that managed by Open vSwitch, that is, Open vSwitch does not | |
2668 | use any of its own network devices to communicate with the client. | |
2669 | The control network must be configured separately, before or after | |
2670 | <code>ovs-vswitchd</code> is started. | |
2671 | </dd> | |
2672 | </dl> | |
2673 | ||
2674 | <p> | |
2675 | If not specified, the default is implementation-specific. | |
2676 | </p> | |
2677 | </column> | |
2678 | </group> | |
2679 | ||
2680 | <group title="Client Failure Detection and Handling"> | |
2681 | <column name="max_backoff"> | |
2682 | Maximum number of milliseconds to wait between connection attempts. | |
2683 | Default is implementation-specific. | |
2684 | </column> | |
2685 | ||
2686 | <column name="inactivity_probe"> | |
2687 | Maximum number of milliseconds of idle time on connection to the client | |
2688 | before sending an inactivity probe message. If Open vSwitch does not | |
2689 | communicate with the client for the specified number of seconds, it | |
2690 | will send a probe. If a response is not received for the same | |
2691 | additional amount of time, Open vSwitch assumes the connection has been | |
2692 | broken and attempts to reconnect. Default is implementation-specific. | |
2bb82bf0 | 2693 | A value of 0 disables inactivity probes. |
94db5407 BP |
2694 | </column> |
2695 | </group> | |
2696 | ||
0b3e7a8b AE |
2697 | <group title="Status"> |
2698 | <column name="is_connected"> | |
2699 | <code>true</code> if currently connected to this manager, | |
2700 | <code>false</code> otherwise. | |
2701 | </column> | |
2702 | ||
3fd8d445 BP |
2703 | <column name="status" key="last_error"> |
2704 | A human-readable description of the last error on the connection | |
2705 | to the manager; i.e. <code>strerror(errno)</code>. This key | |
2706 | will exist only if an error has occurred. | |
2707 | </column> | |
2708 | ||
f9e5e5b3 BP |
2709 | <column name="status" key="state" |
2710 | type='{"type": "string", "enum": ["set", ["VOID", "BACKOFF", "CONNECTING", "ACTIVE", "IDLE"]]}'> | |
3fd8d445 | 2711 | <p> |
f9e5e5b3 | 2712 | The state of the connection to the manager: |
3fd8d445 | 2713 | </p> |
a11f6164 | 2714 | <dl> |
3fd8d445 BP |
2715 | <dt><code>VOID</code></dt> |
2716 | <dd>Connection is disabled.</dd> | |
2717 | ||
2718 | <dt><code>BACKOFF</code></dt> | |
2719 | <dd>Attempting to reconnect at an increasing period.</dd> | |
2720 | ||
2721 | <dt><code>CONNECTING</code></dt> | |
2722 | <dd>Attempting to connect.</dd> | |
2723 | ||
2724 | <dt><code>ACTIVE</code></dt> | |
2725 | <dd>Connected, remote host responsive.</dd> | |
2726 | ||
2727 | <dt><code>IDLE</code></dt> | |
2728 | <dd>Connection is idle. Waiting for response to keep-alive.</dd> | |
a11f6164 | 2729 | </dl> |
3fd8d445 BP |
2730 | <p> |
2731 | These values may change in the future. They are provided only for | |
2732 | human consumption. | |
2733 | </p> | |
2734 | </column> | |
2735 | ||
f9e5e5b3 BP |
2736 | <column name="status" key="sec_since_connect" |
2737 | type='{"type": "integer", "minInteger": 0}'> | |
3fd8d445 BP |
2738 | The amount of time since this manager last successfully connected |
2739 | to the database (in seconds). Value is empty if manager has never | |
2740 | successfully connected. | |
2741 | </column> | |
2742 | ||
f9e5e5b3 BP |
2743 | <column name="status" key="sec_since_disconnect" |
2744 | type='{"type": "integer", "minInteger": 0}'> | |
3fd8d445 BP |
2745 | The amount of time since this manager last disconnected from the |
2746 | database (in seconds). Value is empty if manager has never | |
2747 | disconnected. | |
2748 | </column> | |
2749 | ||
2750 | <column name="status" key="locks_held"> | |
2751 | Space-separated list of the names of OVSDB locks that the connection | |
2752 | holds. Omitted if the connection does not hold any locks. | |
2753 | </column> | |
2754 | ||
2755 | <column name="status" key="locks_waiting"> | |
2756 | Space-separated list of the names of OVSDB locks that the connection is | |
2757 | currently waiting to acquire. Omitted if the connection is not waiting | |
2758 | for any locks. | |
2759 | </column> | |
2760 | ||
2761 | <column name="status" key="locks_lost"> | |
2762 | Space-separated list of the names of OVSDB locks that the connection | |
2763 | has had stolen by another OVSDB client. Omitted if no locks have been | |
2764 | stolen from this connection. | |
2765 | </column> | |
2766 | ||
f9e5e5b3 BP |
2767 | <column name="status" key="n_connections" |
2768 | type='{"type": "integer", "minInteger": 2}'> | |
3fd8d445 BP |
2769 | <p> |
2770 | When <ref column="target"/> specifies a connection method that | |
2771 | listens for inbound connections (e.g. <code>ptcp:</code> or | |
2772 | <code>pssl:</code>) and more than one connection is actually active, | |
2773 | the value is the number of active connections. Otherwise, this | |
2774 | key-value pair is omitted. | |
2775 | </p> | |
2776 | <p> | |
2777 | When multiple connections are active, status columns and key-value | |
2778 | pairs (other than this one) report the status of one arbitrarily | |
2779 | chosen connection. | |
2780 | </p> | |
0b3e7a8b AE |
2781 | </column> |
2782 | </group> | |
3fd8d445 BP |
2783 | |
2784 | <group title="Common Columns"> | |
2785 | The overall purpose of these columns is described under <code>Common | |
2786 | Columns</code> at the beginning of this document. | |
2787 | ||
2788 | <column name="external_ids"/> | |
2789 | </group> | |
94db5407 BP |
2790 | </table> |
2791 | ||
89365653 BP |
2792 | <table name="NetFlow"> |
2793 | A NetFlow target. NetFlow is a protocol that exports a number of | |
2794 | details about terminating IP flows, such as the principals involved | |
2795 | and duration. | |
2796 | ||
2797 | <column name="targets"> | |
2798 | NetFlow targets in the form | |
2799 | <code><var>ip</var>:<var>port</var></code>. The <var>ip</var> | |
2800 | must be specified numerically, not as a DNS name. | |
2801 | </column> | |
2802 | ||
2803 | <column name="engine_id"> | |
2804 | Engine ID to use in NetFlow messages. Defaults to datapath index | |
2805 | if not specified. | |
2806 | </column> | |
2807 | ||
2808 | <column name="engine_type"> | |
2809 | Engine type to use in NetFlow messages. Defaults to datapath | |
2810 | index if not specified. | |
2811 | </column> | |
2812 | ||
2813 | <column name="active_timeout"> | |
2814 | The interval at which NetFlow records are sent for flows that are | |
2815 | still active, in seconds. A value of <code>0</code> requests the | |
2816 | default timeout (currently 600 seconds); a value of <code>-1</code> | |
2817 | disables active timeouts. | |
2818 | </column> | |
2819 | ||
2820 | <column name="add_id_to_interface"> | |
2821 | <p>If this column's value is <code>false</code>, the ingress and egress | |
3fd8d445 BP |
2822 | interface fields of NetFlow flow records are derived from OpenFlow port |
2823 | numbers. When it is <code>true</code>, the 7 most significant bits of | |
2824 | these fields will be replaced by the least significant 7 bits of the | |
2825 | engine id. This is useful because many NetFlow collectors do not | |
2826 | expect multiple switches to be sending messages from the same host, so | |
2827 | they do not store the engine information which could be used to | |
2828 | disambiguate the traffic.</p> | |
89365653 BP |
2829 | <p>When this option is enabled, a maximum of 508 ports are supported.</p> |
2830 | </column> | |
13008eb3 | 2831 | |
3fd8d445 BP |
2832 | <group title="Common Columns"> |
2833 | The overall purpose of these columns is described under <code>Common | |
2834 | Columns</code> at the beginning of this document. | |
2835 | ||
2836 | <column name="external_ids"/> | |
2837 | </group> | |
89365653 BP |
2838 | </table> |
2839 | ||
2840 | <table name="SSL"> | |
2841 | SSL configuration for an Open_vSwitch. | |
2842 | ||
2843 | <column name="private_key"> | |
2844 | Name of a PEM file containing the private key used as the switch's | |
2845 | identity for SSL connections to the controller. | |
2846 | </column> | |
2847 | ||
2848 | <column name="certificate"> | |
2849 | Name of a PEM file containing a certificate, signed by the | |
2850 | certificate authority (CA) used by the controller and manager, | |
2851 | that certifies the switch's private key, identifying a trustworthy | |
2852 | switch. | |
2853 | </column> | |
2854 | ||
2855 | <column name="ca_cert"> | |
2856 | Name of a PEM file containing the CA certificate used to verify | |
2857 | that the switch is connected to a trustworthy controller. | |
2858 | </column> | |
2859 | ||
2860 | <column name="bootstrap_ca_cert"> | |
2861 | If set to <code>true</code>, then Open vSwitch will attempt to | |
2862 | obtain the CA certificate from the controller on its first SSL | |
2863 | connection and save it to the named PEM file. If it is successful, | |
2864 | it will immediately drop the connection and reconnect, and from then | |
2865 | on all SSL connections must be authenticated by a certificate signed | |
2866 | by the CA certificate thus obtained. <em>This option exposes the | |
3fd8d445 BP |
2867 | SSL connection to a man-in-the-middle attack obtaining the initial |
2868 | CA certificate.</em> It may still be useful for bootstrapping. | |
89365653 | 2869 | </column> |
13008eb3 | 2870 | |
3fd8d445 BP |
2871 | <group title="Common Columns"> |
2872 | The overall purpose of these columns is described under <code>Common | |
2873 | Columns</code> at the beginning of this document. | |
2874 | ||
2875 | <column name="external_ids"/> | |
2876 | </group> | |
89365653 BP |
2877 | </table> |
2878 | ||
2879 | <table name="sFlow"> | |
2880 | <p>An sFlow(R) target. sFlow is a protocol for remote monitoring | |
3fd8d445 | 2881 | of switches.</p> |
89365653 BP |
2882 | |
2883 | <column name="agent"> | |
e723ff43 | 2884 | Name of the network device whose IP address should be reported as the |
733adf2a LG |
2885 | ``agent address'' to collectors. If not specified, the agent device is |
2886 | figured from the first target address and the routing table. If the | |
2887 | routing table does not contain a route to the target, the IP address | |
e723ff43 BP |
2888 | defaults to the <ref table="Controller" column="local_ip"/> in the |
2889 | collector's <ref table="Controller"/>. If an agent IP address cannot be | |
733adf2a | 2890 | determined any of these ways, sFlow is disabled. |
89365653 BP |
2891 | </column> |
2892 | ||
2893 | <column name="header"> | |
2894 | Number of bytes of a sampled packet to send to the collector. | |
2895 | If not specified, the default is 128 bytes. | |
2896 | </column> | |
2897 | ||
2898 | <column name="polling"> | |
2899 | Polling rate in seconds to send port statistics to the collector. | |
2900 | If not specified, defaults to 30 seconds. | |
2901 | </column> | |
2902 | ||
2903 | <column name="sampling"> | |
2904 | Rate at which packets should be sampled and sent to the collector. | |
2905 | If not specified, defaults to 400, which means one out of 400 | |
2906 | packets, on average, will be sent to the collector. | |
2907 | </column> | |
2908 | ||
2909 | <column name="targets"> | |
2910 | sFlow targets in the form | |
2911 | <code><var>ip</var>:<var>port</var></code>. | |
2912 | </column> | |
13008eb3 | 2913 | |
3fd8d445 BP |
2914 | <group title="Common Columns"> |
2915 | The overall purpose of these columns is described under <code>Common | |
2916 | Columns</code> at the beginning of this document. | |
2917 | ||
2918 | <column name="external_ids"/> | |
2919 | </group> | |
89365653 | 2920 | </table> |
c1c9c9c4 BP |
2921 | |
2922 | <table name="Capability"> | |
2923 | <p>Records in this table describe functionality supported by the hardware | |
3fd8d445 BP |
2924 | and software platform on which this Open vSwitch is based. Clients |
2925 | should not modify this table.</p> | |
c1c9c9c4 BP |
2926 | |
2927 | <p>A record in this table is meaningful only if it is referenced by the | |
3fd8d445 BP |
2928 | <ref table="Open_vSwitch" column="capabilities"/> column in the |
2929 | <ref table="Open_vSwitch"/> table. The key used to reference it, called | |
2930 | the record's ``category,'' determines the meanings of the | |
2931 | <ref column="details"/> column. The following general forms of | |
2932 | categories are currently defined:</p> | |
c1c9c9c4 BP |
2933 | |
2934 | <dl> | |
2935 | <dt><code>qos-<var>type</var></code></dt> | |
2936 | <dd><var>type</var> is supported as the value for | |
3fd8d445 | 2937 | <ref column="type" table="QoS"/> in the <ref table="QoS"/> table. |
c1c9c9c4 BP |
2938 | </dd> |
2939 | </dl> | |
2940 | ||
2941 | <column name="details"> | |
2942 | <p>Key-value pairs that describe capabilities. The meaning of the pairs | |
2943 | depends on the category key that the <ref table="Open_vSwitch" | |
2944 | column="capabilities"/> column in the <ref table="Open_vSwitch"/> table | |
2945 | uses to reference this record, as described above.</p> | |
2946 | ||
2947 | <p>The presence of a record for category <code>qos-<var>type</var></code> | |
3fd8d445 BP |
2948 | indicates that the switch supports <var>type</var> as the value of |
2949 | the <ref table="QoS" column="type"/> column in the <ref table="QoS"/> | |
2950 | table. The following key-value pairs are defined to further describe | |
2951 | QoS capabilities:</p> | |
c1c9c9c4 BP |
2952 | |
2953 | <dl> | |
2954 | <dt><code>n-queues</code></dt> | |
2955 | <dd>Number of supported queues, as a positive integer. Keys in the | |
3fd8d445 BP |
2956 | <ref table="QoS" column="queues"/> column for <ref table="QoS"/> |
2957 | records whose <ref table="QoS" column="type"/> value | |
2958 | equals <var>type</var> must range between 0 and this value minus one, | |
2959 | inclusive.</dd> | |
c1c9c9c4 BP |
2960 | </dl> |
2961 | </column> | |
2962 | </table> | |
3fd8d445 | 2963 | |
89365653 | 2964 | </database> |