4 * New "monitor2" and "update2" extensions to RFC 7047.
6 * OpenFlow 1.1+ OFPT_QUEUE_GET_CONFIG_REQUEST now supports OFPP_ANY.
7 * OpenFlow 1.4+ OFPMP_QUEUE_DESC is now supported.
9 * queue-get-config command now allows a queue ID to be specified.
13 - Dropped support for Python older than version 2.7. As a consequence,
14 using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
15 have Python 2.4) requires first installing Python 2.7.
17 * Group chaining (where one OpenFlow group triggers another) is
19 * OpenFlow 1.4+ "importance" is now considered for flow eviction.
20 * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
21 * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
22 * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
23 * Allow modifying the ICMPv4/ICMPv6 type and code fields.
24 * OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG are
27 * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
29 * Geneve tunnels can now match and set options and the OAM bit.
30 * The nonstandard GRE64 tunnel extension has been dropped.
31 - Support Multicast Listener Discovery (MLDv1 and MLDv2).
32 - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
33 - sFlow agent now reports tunnel and MPLS structures.
34 - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
35 targets to run a new system testsuite. These tests can be run inside
36 a Vagrant box. See INSTALL.md for details
37 - Mark --syslog-target argument as deprecated. It will be removed in
39 - Added --user option to all daemons
40 - Add support for connection tracking through the new "ct" action
41 and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
42 available on Linux kernels with the connection tracking module loaded.
43 - Add experimental version of OVN. OVN, the Open Virtual Network, is a
44 system to support virtual network abstraction. OVN complements the
45 existing capabilities of OVS to add native support for virtual network
46 abstractions, such as virtual L2 and L3 overlays and security groups.
48 * DPDK ports may now be created via network scripts (see README.RHEL).
54 - Flow table modifications are now atomic, meaning that each packet
55 now sees a coherent version of the OpenFlow pipeline. For
56 example, if a controller removes all flows with a single OpenFlow
57 "flow_mod", no packet sees an intermediate version of the OpenFlow
58 pipeline where only some of the flows have been deleted.
59 - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
60 - Add bash command-line completion support for ovs-vsctl Please check
61 utilities/ovs-command-compgen.INSTALL.md for how to use.
62 - The MAC learning feature now includes per-port fairness to mitigate
64 - New support for a "conjunctive match" OpenFlow extension, which
65 allows constructing OpenFlow matches of the form "field1 in
66 {a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
67 see documentation for the "conjunction" action in ovs-ofctl(8).
68 - Add bash command-line completion support for ovs-appctl/ovs-dpctl/
69 ovs-ofctl/ovsdb-tool commands. Please check
70 utilities/ovs-command-compgen.INSTALL.md for how to use.
71 - The "learn" action supports a new flag "delete_learned" that causes
72 the learned flows to be deleted when the flow with the "learn" action
74 - Basic support for the Geneve tunneling protocol. It is not yet
75 possible to generate or match options. This is planned for a future
76 release. The protocol is documented at
77 http://tools.ietf.org/html/draft-gross-geneve-00
78 - The OVS database now reports controller rate limiting statistics.
79 - sflow now exports information about LACP-based bonds, port names, and
80 OpenFlow port numbers, as well as datapath performance counters.
81 - ovs-dpctl functionality is now available for datapaths integrated
82 into ovs-vswitchd, via ovs-appctl. Some existing ovs-appctl
83 commands are now redundant and will be removed in a future
84 release. See ovs-vswitchd(8) for details.
86 * OpenFlow 1.4 bundles are now supported for flow mods and port
87 mods. For flow mods, both 'atomic' and 'ordered' bundle flags
88 are trivially supported, as all bundled messages are executed
89 in the order they were added and all flow table modifications
90 are now atomic to the datapath. Port mods may not appear in
91 atomic bundles, as port status modifications are not atomic.
92 * IPv6 flow label and neighbor discovery fields are now modifiable.
93 * OpenFlow 1.5 extended registers are now supported.
94 * The OpenFlow 1.5 actset_output field is now supported.
95 * OpenFlow 1.5 Copy-Field action is now supported.
96 * OpenFlow 1.5 masked Set-Field action is now supported.
97 * OpenFlow 1.3+ table features requests are now supported (read-only).
98 * Nicira extension "move" actions may now be included in action sets.
99 * "resubmit" actions may now be included in action sets. The resubmit
100 is executed last, and only if the action set has no "output" or "group"
102 * OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
103 * A new Netronome extension to OpenFlow 1.5+ allows control over the
104 fields hashed for OpenFlow select groups. See "selection_method" and
105 related options in ovs-ofctl(8) for details.
106 - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
107 ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
108 use an OpenFlow 1.4 bundle to operate the modifications as a single
109 atomic transaction. If any of the flow mods in a transaction fail, none
110 of them are executed. All flow mods in a bundle appear to datapath
111 lookups simultaneously.
112 - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
113 mods as an input by allowing the flow specification to start with an
114 explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
115 keyword. A missing keyword is treated as 'add', so this is fully
116 backwards compatible. With the new '--bundle' option all the flow mods
117 are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
118 - ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
119 MD5 is no longer secure and some operating systems have started to disable
121 - ovsdb-server: New OVSDB protocol extension allows inequality tests on
122 "optional scalar" columns. See ovsdb-server(1) for details.
123 - ovs-vsctl now permits immutable columns in a new row to be modified in
124 the same transaction that creates the row.
125 - test-controller has been renamed ovs-testcontroller at request of users
126 who find it useful for testing basic OpenFlow setups. It is still not
127 a necessary or desirable part of most Open vSwitch deployments.
128 - Support for travis-ci.org based continuous integration builds has been
129 added. Build failures are reported to build@openvswitch.org. See INSTALL.md
130 file for additional details.
131 - Support for the Rapid Spanning Tree Protocol (IEEE 802.1D-2004).
132 The implementation has been tested successfully against the Ixia Automated
133 Network Validation Library (ANVL).
134 - Stats are no longer updated on fake bond interface.
135 - Keep active bond slave selection across OVS restart.
136 - A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
137 containers. If and when there is a native integration of Open vSwitch
138 with Docker, the wrapper script will be retired.
139 - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
140 protocols. This is generic tunneling mechanism for userspace datapath.
141 - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
142 - Support for Linux kernels up to 4.0.x
143 - The documentation now use the term 'destination' to mean one of syslog,
144 console or file for vlog logging instead of the previously used term
146 - Support for VXLAN Group Policy extension
147 - Initial support for the IETF Auto-Attach SPBM draft standard. This
148 contains rudimentary support for the LLDP protocol as needed for
150 - The default OpenFlow and OVSDB ports are now the IANA-assigned
151 numbers. OpenFlow is 6653 and OVSDB is 6640.
152 - Support for DPDK vHost.
153 - Support for outer UDP checksums in Geneve and VXLAN.
154 - The kernel vports with dependencies are no longer part of the overall
155 openvswitch.ko but built and loaded automatically as individual kernel
156 modules (vport-*.ko).
157 - Support for STT tunneling.
158 - ovs-sim: New developer tool for simulating multiple OVS instances.
159 See ovs-sim(1) for more information.
160 - Support to configure method (--syslog-method argument) that determines
161 how daemons will talk with syslog.
162 - Support for "ovs-appctl vlog/list-pattern" command that lets to query
163 logging message format for each destination.
167 ---------------------
168 - OpenFlow 1.1, 1.2, and 1.3 are now enabled by default in
170 - Linux kernel datapath now has an exact match cache optimizing the
171 flow matching process.
172 - Datapath flows now have partially wildcarded tranport port field
173 matches. This reduces userspace upcalls, but increases the
174 number of different masks in the datapath. The kernel datapath
175 exact match cache removes the overhead of matching the incoming
176 packets with the larger number of masks, but when paired with an
177 older kernel module, some workloads may perform worse with the
179 - Compatibility with autoconf 2.63 (previously >=2.64)
181 v2.2.0 - Internal Release
182 ---------------------
183 - Internal ports are no longer brought up by default, because it
184 should be an administrator task to bring up devices as they are
186 - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
188 - Port creation and configuration errors are now stored in a new error
189 column of the Interface table and included in 'ovs-vsctl show'.
190 - The "ovsdbmonitor" graphical tool has been removed, because it was
191 poorly maintained and not widely used.
192 - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
193 controllers against Open vSwitch. See INSTALL.md for details.
194 - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
195 - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
196 log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
198 - Support for Linux kernels up to 3.14. From Kernel 3.12 onwards OVS uses
199 tunnel API for GRE and VXLAN.
200 - Added DPDK support.
201 - Added support for custom vlog patterns in Python
205 ---------------------
206 - Address prefix tracking support for flow tables. New columns
207 "prefixes" in OVS-DB table "Flow_Table" controls which packet
208 header fields are used for address prefix tracking. Prefix
209 tracking allows the classifier to skip rules with longer than
210 necessary prefixes, resulting in better wildcarding for datapath
211 flows. Default configuration is to not use any fields for prefix
212 tracking. However, if any flow tables contain both exact matches
213 and masked matches for IP address fields, OVS performance may be
214 increased by using this feature.
215 * As of now, the fields for which prefix lookup can be enabled
216 are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
217 aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
218 (Using this feature for 'tun_id' would only make sense if the
219 tunnel IDs have prefix structure similar to IP addresses.)
220 * There is a maximum number of fields that can be enabled for any
221 one flow table. Currently this limit is 3.
223 $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
224 --id=@N1 create Flow_Table name=table0
225 $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
226 --id=@N1 create Flow_Table name=table1
227 $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
228 $ ovs-vsctl set Flow_Table table1 prefixes=[]
229 - TCP flags matching: OVS now supports matching of TCP flags. This
230 has an adverse performance impact when using OVS userspace 1.10
231 or older (no megaflows support) together with the new OVS kernel
232 module. It is recommended that the kernel and userspace modules
233 both are upgraded at the same time.
234 - The default OpenFlow and OVSDB ports will change to
235 IANA-assigned numbers in a future release. Consider updating
236 your installations to specify port numbers instead of using the
239 * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
240 * OVS limits the OpenFlow port numbers it assigns to port 32767 and
241 below, leaving port numbers above that range free for assignment
243 * ovs-vswitchd now honors changes to the "ofport_request" column
244 in the Interface table by changing the port's OpenFlow port
246 * The Open vSwitch software switch now supports OpenFlow groups.
247 - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
248 diagram only if graphviz package was installed at the build time.
249 - Support for Linux kernels up to 3.11
251 The "show" command also displays mega flow mask stats.
253 * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
254 - ovs-controller has been renamed test-controller. It is no longer
255 packaged or installed by default, because too many users assumed
256 incorrectly that ovs-controller was a necessary or desirable part
257 of an Open vSwitch deployment.
258 - Added vlog option to export to a UDP syslog sink.
260 * The "monitor" command can now monitor all tables in a database,
261 instead of being limited to a single table.
262 - The flow-eviction-threshold has been replaced by the flow-limit which is a
263 hard limit on the number of flows in the datapath. It defaults to 200,000
264 flows. OVS automatically adjusts this number depending on network
266 - Added IPv6 support for active and passive socket communications.
270 ---------------------
271 - The ovs-vswitchd process is no longer single-threaded. Multiple
272 threads are now used to handle flow set up and asynchronous
275 * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
276 1.3, which had experimental support in 1.10).
277 * Experimental protocol support for OpenFlow 1.1+ groups. This
278 does not yet include an implementation in the Open vSwitch
280 * Experimental protocol support for OpenFlow 1.2+ meters. This
281 does not yet include an implementation in the Open vSwitch
283 * New support for matching outer source and destination IP address
284 of tunneled packets, for tunnel ports configured with the newly
285 added "remote_ip=flow" and "local_ip=flow" options.
286 * Support for matching on metadata 'pkt_mark' for interacting with
287 other system components. On Linux this corresponds to the skb
289 * Support matching, rewriting SCTP ports
290 - The Interface table in the database has a new "ifindex" column to
291 report the interface's OS-assigned ifindex.
292 - New "check-oftest" Makefile target for running OFTest against Open
293 vSwitch. See README-OFTest for details.
294 - The flow eviction threshold has been moved to the Open_vSwitch table.
295 - Database names are now mandatory when specifying ovsdb-server options
296 through database paths (e.g. Private key option with the database name
297 should look like "--private-key=db:Open_vSwitch,SSL,private_key").
298 - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
299 - Support for Linux kernels up to 3.10
301 * New "ofp-parse" for printing OpenFlow messages read from a file.
302 * New commands for OpenFlow 1.1+ groups.
303 - Added configurable flow caching support to IPFIX exporter.
304 - Dropped support for Linux pre-2.6.32.
305 - Log file timestamps and ovsdb commit timestamps are now reported
306 with millisecond resolution. (Previous versions only reported
310 v1.11.0 - 28 Aug 2013
311 ---------------------
312 - Support for megaflows, which allows wildcarding in the kernel (and
313 any dpif implementation that supports wildcards). Depending on
314 the flow table and switch configuration, flow set up rates are
315 close to the Linux bridge.
316 - The "tutorial" directory contains a new tutorial for some advanced
317 Open vSwitch features.
318 - Stable bond mode has been removed.
319 - The autopath action has been removed.
320 - New support for the data encapsulation format of the LISP tunnel
321 protocol (RFC 6830). An external control plane or manual flow
322 setup is required for EID-to-RLOC mapping.
324 * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
325 1.1 and later are now implemented.
326 * New "stack" extension for use in actions, to push and pop from
328 * The "load" and "set_field" actions can now modify the "in_port". (This
329 allows one to enable output to a flow's input port by setting the
330 in_port to some unused value, such as OFPP_NONE.)
332 * New debugging commands "add-flow", "mod-flow", "del-flow".
333 * "dump-flows" now has a -m option to increase output verbosity.
334 - In dpif-based bridges, cache action translations, which can improve
335 flow set up performance by 80% with a complicated flow table.
336 - New syslog format, prefixed with "ovs|", to be easier to filter.
337 - RHEL: Removes the default firewall rule that allowed GRE traffic to
338 pass through. Any users that relied on this automatic firewall hole
339 will have to manually configure it. The ovs-ctl(8) manpage documents
340 the "enable-protocol" command that can be used as an alternative.
341 - New CFM demand mode which uses data traffic to indicate interface
344 v1.10.0 - 01 May 2013
345 ---------------------
346 - Bridge compatibility support has been removed. Any uses that
347 rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
348 or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
350 - The maximum size of the MAC learning table is now configurable.
351 - With the Linux datapath, packets for new flows are now queued
352 separately on a per-port basis, so it should no longer be
353 possible for a large number of new flows arriving on one port to
354 prevent new flows from being processed on other ports.
356 * Previously ovs-vsctl would retry connecting to the database forever,
357 causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
358 only tries once by default (use --retry to try forever). This change
359 means that you may want to remove uses of --timeout to avoid hangs
361 * Many "ovs-vsctl" database commands now accept an --if-exists option.
362 Please refer to the ovs-vsctl manpage for details.
364 - Experimental support for newer versions of OpenFlow. See
365 the "What versions of OpenFlow does Open vSwitch support?"
366 question in the FAQ for more details.
367 - The OpenFlow "dp_desc" may now be configured by setting the
368 value of other-config:dp-desc in the Bridge table.
369 - It is possible to request the OpenFlow port number with the
370 "ofport_request" column in the Interface table.
371 - The NXM flow_removed message now reports the OpenFlow table ID
372 from which the flow was removed.
374 - New support for the VXLAN tunnel protocol (see the IETF draft here:
375 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
376 - Tunneling requires the version of the kernel module paired with
377 Open vSwitch 1.9.0 or later.
378 - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
379 is no longer supported.
380 - Path MTU discovery is no longer supported.
381 - CAPWAP tunneling support removed.
382 - Tunnels with multicast destination ports are no longer supported.
384 - The "dump-flows" and "del-flows" no longer require an argument
385 if only one datapath exists.
387 - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
388 commands available allow control over logging rate limits.
389 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
390 that mimic the equivalent ovs-dpctl commands.
391 - The ofproto library is now responsible for assigning OpenFlow port
392 numbers. An ofproto implementation should assign them when
393 port_construct() is called.
394 - All dpif-based bridges of a particular type share a common
395 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
396 commands will now return information on that shared datapath. To
397 get the equivalent bridge-specific information, use the new
398 "ovs-appctl dpif/*" commands.
399 - Backward-incompatible changes:
400 - Earlier Open vSwitch versions treated ANY as a wildcard in flow
401 syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
402 conflict. ANY was rarely used in flow syntax, so we chose to
403 retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
404 - Patch ports no longer require kernel support, so they now work
405 with FreeBSD and the kernel module built into Linux 3.3 and later.
406 - New "sample" action.
410 ------------------------
412 - Support for ipv6 set action.
413 - SKB mark matching and setting.
414 - support for Linux kernels up to 3.8
415 - FreeBSD is now a supported platform, thanks to code contributions from
416 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
417 - ovs-bugtool: New --ovs option to report only OVS related information.
418 - New %t and %T log escapes to identify the subprogram within a
419 cooperating group of processes or threads that emitted a log message.
420 The default log patterns now include this information.
422 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
423 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
424 - Adds support for writing to the metadata field for a flow.
426 - The tunneling code no longer assumes input and output keys are
427 symmetric. If they are not, PMTUD needs to be disabled for
428 tunneling to work. Note this only applies to flow-based keys.
429 - New support for a nonstandard form of GRE that supports a 64-bit key.
430 - Tunnel Path MTU Discovery default value was set to 'disabled'.
431 This feature is deprecated and will be removed soon.
432 - Tunnel header caching removed.
434 - Commands and actions that accept port numbers now also accept keywords
435 that represent those ports (such as LOCAL, NONE, and ALL). This is
436 also the recommended way to specify these ports, for compatibility
437 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
438 for these ports for different purposes).
440 - Support requesting the port number with the "port_no" option in
441 the "add-if" command.
442 - ovs-pki: The "online PKI" features have been removed, along with
443 the ovs-pki-cgi program that facilitated it, because of some
444 alarmist insecurity claims. We do not believe that these claims
445 are true, but because we do not know of any users for this
446 feature it seems better on balance to remove it. (The ovs-pki-cgi
447 program was not included in distribution packaging.)
448 - ovsdb-server now enforces the immutability of immutable columns. This
449 was not enforced in earlier versions due to an oversight.
450 - The following features are now deprecated. They will be removed no
451 earlier than February 2013. Please email dev@openvswitch.org with
453 - Bridge compatibility.
455 - The autopath action.
456 - Interface type "null".
457 - Numeric values for reserved ports (see "ovs-ofctl" note above).
458 - Tunnel Path MTU Discovery.
459 - CAPWAP tunnel support.
460 - The data in the RARP packets can now be matched in the same way as the
465 ------------------------
466 *** Internal only release ***
467 - New FAQ. Please send updates and additions!
468 - Authors of controllers, please read the new section titled "Action
469 Reproduction" in DESIGN, which describes an Open vSwitch change in
470 behavior in corner cases that may affect some controllers.
472 - A new test utility that can create L3 tunnel between two Open
473 vSwitches and detect connectivity issues.
475 - New --sort and --rsort options for "dump-flows" command.
476 - "mod-port" command can now control all OpenFlow config flags.
478 - Allow general bitwise masking for IPv4 and IPv6 addresses in
479 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
481 - Allow support for arbitrary Ethernet masks. (Previously, only
482 the multicast bit in the destination address could be individually
484 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
485 - The OFPST_QUEUE request now reports an error if a specified port or
486 queue does not exist, or for requests for a specific queue on all
487 ports, if the specified queue does not exist on any port. (Previous
488 versions generally reported an empty set of results.)
489 - New "flow monitor" feature to allow controllers to be notified of
490 flow table changes as they happen.
491 - Additional protocols are not mirrored and dropped when forward-bpdu is
492 false. For a full list, see the ovs-vswitchd.conf.db man page.
493 - Open vSwitch now sends RARP packets in situations where it previously
494 sent a custom protocol, making it consistent with behavior of QEMU and
496 - All Open vSwitch programs and log files now show timestamps in UTC,
497 instead the local timezone, by default.
501 ------------------------
502 - kernel modules are renamed. openvswitch_mod.ko is now
503 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
504 - Increased the number of NXM registers to 8.
505 - Added ability to configure DSCP setting for manager and controller
506 connections. By default, these connections have a DSCP value of
507 Internetwork Control (0xc0).
508 - Added the granular link health statistics, 'cfm_health', to an
511 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
512 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
515 - Added the "dump-ports-desc" command to retrieve port
516 information using the new port description multipart messages.
518 - Added support for spawning ovs-test server from the client.
519 - Now ovs-test is able to automatically create test bridges and ports.
520 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
521 - Tripled flow setup performance.
522 - The "coverage/log" command previously available through ovs-appctl
523 has been replaced by "coverage/show". The new command replies with
524 coverage counter values, instead of logging them.
528 ------------------------
529 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
533 ------------------------
534 *** Internal only release ***
536 - LACP bonds no longer fall back to balance-slb when negotiations fail.
537 Instead they drop traffic.
538 - The default bond_mode changed from SLB to active-backup, to protect
539 unsuspecting users from the significant risks of SLB bonds (which are
540 documented in vswitchd/INTERNALS).
541 - Load balancing can be disabled by setting the bond-rebalance-interval
544 - Added support for bitwise matching on TCP and UDP ports.
545 See ovs-ofctl(8) for more information.
546 - NXM flow dumps now include times elapsed toward idle and hard
548 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
549 controllers more precise control over which OpenFlow messages they
550 receive asynchronously.
551 - New "fin_timeout" action.
552 - Added "fin_timeout" support to "learn" action.
553 - New Nicira action NXAST_CONTROLLER that offers additional features
554 over output to OFPP_CONTROLLER.
555 - When QoS settings for an interface do not configure a default queue
556 (queue 0), Open vSwitch now uses a default configuration for that
557 queue, instead of dropping all packets as in previous versions.
559 - Logging to console and file will have UTC timestamp as a default for
560 all the daemons. An example of the default format is
561 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
563 - The syntax of commands and options to set log levels was simplified,
564 to make it easier to remember.
565 - New support for limiting the number of flows in an OpenFlow flow
566 table, with configurable policy for evicting flows upon
567 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
568 for more information.
569 - New "enable-async-messages" column in the Controller table. If set to
570 false, OpenFlow connections to the controller will initially have all
571 asynchronous messages disabled, overriding normal OpenFlow behavior.
572 - ofproto-provider interface:
573 - "struct rule" has a new member "used" that ofproto implementations
574 should maintain by updating with ofproto_rule_update_used().
576 - The new option --timestamp causes the "monitor" command to print
577 a timestamp with every update.
578 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
582 ------------------------
584 - Added support for querying, modifying, and deleting flows
585 based on flow cookie when using NXM.
586 - Added new NXM_PACKET_IN format.
587 - Added new NXAST_DEC_TTL action.
589 - Added daemonization support to the monitor and snoop commands.
591 - The "find" command supports new set relational operators
592 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
593 - ovsdb-tool now uses the typical database and schema installation
594 directories as defaults.
595 - The default MAC learning timeout has been increased from 60 seconds
596 to 300 seconds. The MAC learning timeout is now configurable.
600 ------------------------
601 - Compatible with Open vSwitch kernel module included in Linux 3.3.
602 - New "VLAN splinters" feature to work around buggy device drivers
603 in old Linux versions. (This feature is deprecated. When
604 broken device drivers are no longer in widespread use, we will
605 delete this feature.) See ovs-vswitchd.conf.db(5) for more
608 - Added ability to match on IPv6 flow label through NXM.
609 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
610 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
611 - Added ability to modify ECN bits in IPv4.
612 - Added ability to modify TTL in IPv4.
614 - Don't require the "normal" action to use mirrors. Traffic will
615 now be properly mirrored for any flows, regardless of their
617 - Track packet and byte statistics sent on mirrors.
618 - The sFlow implementation can now usually infer the correct agent
619 device instead of having to be told explicitly.
621 - New "fdb/flush" command to flush bridge's MAC learning table.
623 - A new distributed testing tool that allows one to diagnose performance
624 and connectivity issues. This tool currently is not included in RH or
626 - RHEL packaging now supports integration with Red Hat network scripts.
628 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
629 to active-backup. SLB bonds carry significant risks with them
630 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
631 users from running into. Users are advised to update any scripts or
632 configuration which may be negatively impacted by explicitly setting
633 the bond mode which they want to use.
637 ------------------------
639 - Added an OpenFlow extension which allows the "output" action to accept
641 - Added an OpenFlow extension for flexible learning.
642 - Bumped number of NXM registers from four to five.
644 - New "version" command to determine version of running daemon.
645 - If no argument is provided for "cfm/show", displays detailed
646 information about all interfaces with CFM enabled.
647 - If no argument is provided for "lacp/show", displays detailed
648 information about all ports with LACP enabled.
650 - New "set-if" command to modify a datapath port's configuration.
652 - The software switch now supports 255 OpenFlow tables, instead
653 of just one. By default, only table 0 is consulted, but the
654 new NXAST_RESUBMIT_TABLE action can look up in additional
655 tables. Tables 128 and above are reserved for use by the
656 switch itself; please use only tables 0 through 127.
657 - Add support for 802.1D spanning tree (STP).
658 - Fragment handling extensions:
659 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
660 fields are made available for matching in fragments with
662 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
663 via "ip_frag" in ovs-ofctl).
664 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
665 fragment handling policy.
666 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
667 By default it remains compatible with the old version and other
668 standards-based implementations.
669 - Flow setups are now processed in a round-robin manner across ports
670 to prevent any single client from monopolizing the CPU and conducting
671 a denial of service attack.
672 - Added support for native VLAN tagging. A new "vlan_mode"
673 parameter can be set for "port". Possible values: "access",
674 "trunk", "native-tagged" and "native-untagged".
675 - test-openflowd has been removed. Please use ovs-vswitchd instead.
678 ------------------------
679 - New "ofproto" abstraction layer to ease porting to hardware
681 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
682 - Datapath support for Linux kernels up to 3.0.
684 - New "bundle" and "bundle_load" action extensions.
686 - Implement table unique constraints.
687 - Support cooperative locking between callers.
689 - New "-s" option for "show" command prints packet and byte
690 counters for each port.
692 - New "--readd" option for "replace-flows".
694 - New "show" command to print an overview of configuration.
695 - New "comment" command to add remark that explains intentions.
696 - ovs-brcompatd has been rewritten to fix long-standing bugs.
697 - ovs-openflowd has been renamed test-openflowd and moved into the
698 tests directory. Its presence confused too many users. Please
699 use ovs-vswitchd instead.
700 - New ovs-benchmark utility to test flow setup performance.
701 - A new log level "off" has been added. Configuring a log facility
702 "off" prevents any messages from being logged to it. Previously,
703 "emer" was effectively "off" because no messages were ever logged at
704 level "emer". Now, errors that cause a process to exit are logged
706 - "configure" option --with-l26 has been renamed --with-linux, and
707 --with-l26-source has been renamed --with-linux-source. The old
708 names will be removed after the next release, so please update
710 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
711 datapath/linux-2.6/compat-2.6 directories.
713 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
714 Please use the extensible match extensions instead.
715 - Removed the Maintenance_Point and Monitor tables in an effort
716 to simplify 802.1ag configuration.
717 - Performance and scalability improvements
721 ------------------------
722 - Ability to define policies over IPv6
725 - Support for extensible match extensions to OpenFlow
727 - Support for HFSC qdisc.
728 - Queue used by in-band control can now be configured.
730 - Kernel<->userspace interface has been reworked and should be
731 close to a stable ABI now.
732 - "Port group" concept has been dropped.
733 - GRE over IPSEC tunnels
735 - New active backup bonding mode.
736 - New L4 hashing support when LACP is enabled.
737 - Source MAC hash now includes VLAN field also.
739 - Greatly improved handling of large flow tables
741 - "show" command now prints full vport configuration.
742 - "dump-groups" command removed since kernel support for
743 port groups was dropped.
745 - New commands for working with the new Managers table.
746 - "list" command enhanced with new formatting options and --columns
748 - "get" command now accepts new --id option.
749 - New "find" command.
751 - New "queue-stats" command for printing queue stats.
752 - New commands "replace-flows" and "diff-flows".
753 - Commands to add and remove flows can now read from files.
754 - New --flow-format option to enable or disable NXM.
755 - New --more option to increase OpenFlow message verbosity.
756 - Removed "tun-cookie" command, which is no longer useful.
757 - ovs-controller enhancements for testing various features.
758 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
759 bugs. New ovs-vlan-bug-workaround command for enabling and
760 disabling a workaround for these driver bugs.
762 - "Resubmit" actions now update flow statistics.
763 - New "register" extension for use in matching and actions, via NXM.
764 - New "multipath" experimental action extension.
765 - New support for matching multicast Ethernet frames, via NXM.
766 - New extension for OpenFlow vendor error codes.
767 - New extension to set the QoS output queue without actually
768 sending to an output port.
769 - Open vSwitch now reports a single flow table, instead of
770 separate hash and wildcard tables. This better models the
771 current implementation.
772 - New experimental "note" action.
773 - New "ofproto/trace" ovs-appctl command and associated utilities
774 to ease debugging complex flow tables.
776 - Schema documentation now includes an entity-relationship diagram.
777 - The database is now garbage collected. In most tables,
778 unreferenced rows will be deleted automatically.
779 - Many tables now include statistics updated periodically by
780 ovs-vswitchd or ovsdb-server.
781 - Every table now has an "external-ids" column for use by OVS
783 - There is no default controller anymore. Each bridge must have its
784 controller individually specified.
785 - The "fail-mode" is now a property of a Bridge instead of a Controller.
786 - New versioning and checksum features.
787 - New Managers table and manager_options column in Open_vSwitch table
788 for specifying managers. The old "managers" column in the
789 Open_vSwitch table has been removed.
790 - Many "name" columns are now immutable.
792 - Dropped support for XenServer pre-5.6.100.
793 - Dropped support for Linux pre-2.6.18.
794 - Dropped controller discovery support.
795 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
796 Statistics reporting in the database is a rough equivalent.
797 - Dropped the "corekeeper" package (now separate, at
798 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
799 - Performance and scalability improvements
802 v1.1.0pre2 - 13 Sep 2010
803 ------------------------
806 v1.1.0pre1 - 31 Aug 2010
807 ------------------------
808 - OpenFlow 1.0 slicing (QoS) functionality
809 - Python bindings for configuration database (no write support)
810 - Performance and scalability improvements
815 - New "patch" interface type
820 - Configuration database with remote management
823 - Support for XenServer 5.5 and 5.6
824 - Performance and scalability improvements
827 v0.99.2 - 18 Feb 2010
828 ---------------------
831 v0.99.1 - 25 Jan 2010
832 ---------------------
833 - Add support for sFlow(R)
834 - Make headers compatible with C++
837 v0.99.0 - 14 Jan 2010
838 ---------------------
839 - User-space forwarding engine
842 v0.90.7 - 29 Nov 2009
843 ---------------------
844 - Add support for NetFlow active timeouts
851 v0.90.5 - 21 Sep 2009
852 ---------------------
853 - Generalize in-band control to more diverse network setups
projects / ovs.git / blob