7 - First supported release of OVN. See ovn-architecture(7) for more
10 * New "monitor_cond" "monitor_cond_update" and "update2" extensions to
13 * OpenFlow 1.3 Extension 230, adding OpenFlow Bundles support, is
15 * OpenFlow 1.3+ bundles are now supported for group mods as well as
16 flow mods and port mods. Both 'atomic' and 'ordered' bundle
17 flags are supported for group mods as well as flow mods.
18 * OpenFlow 1.1+ OFPT_QUEUE_GET_CONFIG_REQUEST now supports OFPP_ANY.
19 * OpenFlow 1.4+ OFPMP_QUEUE_DESC is now supported.
20 * OpenFlow 1.4+ OFPT_TABLE_STATUS is now supported.
21 * New property-based packet-in message format NXT_PACKET_IN2 with support
22 for arbitrary user-provided data and for serializing flow table
23 traversal into a continuation for later resumption.
24 * New extension message NXT_SET_ASYNC_CONFIG2 to allow OpenFlow 1.4-like
25 control over asynchronous messages in earlier versions of OpenFlow.
26 * New OpenFlow extension NXM_NX_MPLS_TTL to provide access to MPLS TTL.
27 * New output option, output(port=N,max_len=M), to allow truncating a
28 packet to size M bytes when outputting to port N.
29 * New command OFPGC_ADD_OR_MOD for OFPT_GROUP_MOD message that adds a
30 new group or modifies an existing groups
31 - Improved OpenFlow version compatibility for actions:
32 * New OpenFlow extension to support the "group" action in OpenFlow 1.0.
33 * OpenFlow 1.0 "enqueue" action now properly translated to OpenFlow 1.1+.
34 * OpenFlow 1.1 "mod_nw_ecn" and OpenFlow 1.1+ "mod_nw_ttl" actions now
35 properly translated to OpenFlow 1.0.
37 * queue-get-config command now allows a queue ID to be specified.
38 * '--bundle' option can now be used with OpenFlow 1.3 and with group mods.
39 * New "bundle" command allows executing a mixture of flow and group mods
40 as a single atomic transaction.
41 * New option "--color" to produce colorized output for some commands.
42 * New option '--may-create' to use OFPGC_ADD_OR_MOD in mod-group command.
44 * New "sampling_port" option for "sample" action to allow sampling
45 ingress and egress tunnel metadata with IPFIX.
46 * New ovs-ofctl commands "dump-ipfix-bridge" and "dump-ipfix-flow" to
47 dump bridge IPFIX statistics and flow based IPFIX statistics.
48 * New setting other-config:virtual_obs_id to add an arbitrary string
51 * OVS Linux datapath now implements Conntrack NAT action with all
52 supported Linux kernels.
53 * Support for truncate action.
54 * New QoS type "linux-noop" that prevents Open vSwitch from trying to
55 manage QoS for a given port (useful when other software manages QoS).
57 * New option "n_rxq" for PMD interfaces.
58 Old 'other_config:n-dpdk-rxqs' is no longer supported.
59 Not supported by vHost interfaces. For them number of rx and tx queues
60 is applied from connected virtio device.
61 * New 'other_config:pmd-rxq-affinity' field for PMD interfaces, that
62 allows to pin port's rx queues to desired cores.
63 * New appctl command 'dpif-netdev/pmd-rxq-show' to check the port/rxq
65 * Type of log messages from PMD threads changed from INFO to DBG.
66 * QoS functionality with sample egress-policer implementation.
67 * The mechanism for configuring DPDK has changed to use database
68 * Sensible defaults have been introduced for many of the required
70 * DB entries have been added for many of the DPDK EAL command line
71 arguments. Additional arguments can be passed via the dpdk-extra
73 * Add ingress policing functionality.
74 * PMD threads servicing vHost User ports can now come from the NUMA
75 node that device memory is located on if CONFIG_RTE_LIBRTE_VHOST_NUMA
77 * Basic connection tracking for the userspace datapath (no ALG,
78 fragmentation or NAT support yet)
79 * Support for DPDK 16.07
80 * Optional support for DPDK pdump enabled.
82 * Remove dpdkvhostcuse port type.
83 * OVS client mode for vHost and vHost reconnect (Requires QEMU 2.7)
84 - Increase number of registers to 16.
85 - ovs-benchmark: This utility has been removed due to lack of use and
88 * New "vlog/close" command.
90 * Added the ability to selectively start the forwarding and database
91 functions (ovs-vswitchd and ovsdb-server, respectively).
93 * Remove max number of sessions limit, to enable connection scaling
96 * Added support for Python 3.4+ in addition to existing support
99 * Introduced SELinux policy package.
100 - Datapath Linux kernel compatibility.
101 * Dropped support for kernel older than 3.10.
102 * Removed VLAN splinters feature.
103 * Datapath supports kernel upto 4.6.
105 * Flow based tunnel match and action can be used for IPv6 address using
106 tun_ipv6_src, tun_ipv6_dst fields.
107 * Added support for IPv6 tunnels, for details checkout FAQ.
108 - A wrapper script, 'ovs-tcpdump', to easily port-mirror an OVS port and
110 - Introduce --no-self-confinement flag that allows daemons to work with
111 sockets outside their run directory.
112 - ovs-pki: Changed message digest algorithm from SHA-1 to SHA-512 because
113 SHA-1 is no longer secure and some operating systems have started to
114 disable it in OpenSSL.
115 - Add 'mtu_request' column to the Interface table. It can be used to
116 configure the MTU of non-internal ports.
120 ---------------------
121 - Dropped support for Python older than version 2.7. As a consequence,
122 using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
123 have Python 2.4) requires first installing Python 2.7.
125 * Group chaining (where one OpenFlow group triggers another) is
127 * OpenFlow 1.4+ "importance" is now considered for flow eviction.
128 * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
129 * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
130 * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
131 * Allow modifying the ICMPv4/ICMPv6 type and code fields.
132 * OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG are
135 * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
137 * Geneve tunnels can now match and set options and the OAM bit.
138 * The nonstandard GRE64 tunnel extension has been dropped.
139 - Support Multicast Listener Discovery (MLDv1 and MLDv2).
140 - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
141 - sFlow agent now reports tunnel and MPLS structures.
142 - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
143 targets to run a new system testsuite. These tests can be run inside
144 a Vagrant box. See INSTALL.md for details
145 - Mark --syslog-target argument as deprecated. It will be removed in
146 the next OVS release.
147 - Added --user option to all daemons
148 - Add support for connection tracking through the new "ct" action
149 and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
150 available on Linux kernels with the connection tracking module loaded.
151 - Add experimental version of OVN. OVN, the Open Virtual Network, is a
152 system to support virtual network abstraction. OVN complements the
153 existing capabilities of OVS to add native support for virtual network
154 abstractions, such as virtual L2 and L3 overlays and security groups.
156 * DPDK ports may now be created via network scripts (see README.RHEL).
159 * Added multiqueue support to vhost-user
160 * Note: QEMU 2.5+ required for multiqueue support
163 ---------------------
164 - Flow table modifications are now atomic, meaning that each packet
165 now sees a coherent version of the OpenFlow pipeline. For
166 example, if a controller removes all flows with a single OpenFlow
167 "flow_mod", no packet sees an intermediate version of the OpenFlow
168 pipeline where only some of the flows have been deleted.
169 - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
170 - Add bash command-line completion support for ovs-vsctl Please check
171 utilities/ovs-command-compgen.INSTALL.md for how to use.
172 - The MAC learning feature now includes per-port fairness to mitigate
173 MAC flooding attacks.
174 - New support for a "conjunctive match" OpenFlow extension, which
175 allows constructing OpenFlow matches of the form "field1 in
176 {a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
177 see documentation for the "conjunction" action in ovs-ofctl(8).
178 - Add bash command-line completion support for ovs-appctl/ovs-dpctl/
179 ovs-ofctl/ovsdb-tool commands. Please check
180 utilities/ovs-command-compgen.INSTALL.md for how to use.
181 - The "learn" action supports a new flag "delete_learned" that causes
182 the learned flows to be deleted when the flow with the "learn" action
184 - Basic support for the Geneve tunneling protocol. It is not yet
185 possible to generate or match options. This is planned for a future
186 release. The protocol is documented at
187 http://tools.ietf.org/html/draft-gross-geneve-00
188 - The OVS database now reports controller rate limiting statistics.
189 - sflow now exports information about LACP-based bonds, port names, and
190 OpenFlow port numbers, as well as datapath performance counters.
191 - ovs-dpctl functionality is now available for datapaths integrated
192 into ovs-vswitchd, via ovs-appctl. Some existing ovs-appctl
193 commands are now redundant and will be removed in a future
194 release. See ovs-vswitchd(8) for details.
196 * OpenFlow 1.4 bundles are now supported for flow mods and port
197 mods. For flow mods, both 'atomic' and 'ordered' bundle flags
198 are trivially supported, as all bundled messages are executed
199 in the order they were added and all flow table modifications
200 are now atomic to the datapath. Port mods may not appear in
201 atomic bundles, as port status modifications are not atomic.
202 * IPv6 flow label and neighbor discovery fields are now modifiable.
203 * OpenFlow 1.5 extended registers are now supported.
204 * The OpenFlow 1.5 actset_output field is now supported.
205 * OpenFlow 1.5 Copy-Field action is now supported.
206 * OpenFlow 1.5 masked Set-Field action is now supported.
207 * OpenFlow 1.3+ table features requests are now supported (read-only).
208 * Nicira extension "move" actions may now be included in action sets.
209 * "resubmit" actions may now be included in action sets. The resubmit
210 is executed last, and only if the action set has no "output" or "group"
212 * OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
213 * A new Netronome extension to OpenFlow 1.5+ allows control over the
214 fields hashed for OpenFlow select groups. See "selection_method" and
215 related options in ovs-ofctl(8) for details.
216 - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
217 ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
218 use an OpenFlow 1.4 bundle to operate the modifications as a single
219 atomic transaction. If any of the flow mods in a transaction fail, none
220 of them are executed. All flow mods in a bundle appear to datapath
221 lookups simultaneously.
222 - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
223 mods as an input by allowing the flow specification to start with an
224 explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
225 keyword. A missing keyword is treated as 'add', so this is fully
226 backwards compatible. With the new '--bundle' option all the flow mods
227 are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
228 - ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
229 MD5 is no longer secure and some operating systems have started to disable
231 - ovsdb-server: New OVSDB protocol extension allows inequality tests on
232 "optional scalar" columns. See ovsdb-server(1) for details.
233 - ovs-vsctl now permits immutable columns in a new row to be modified in
234 the same transaction that creates the row.
235 - test-controller has been renamed ovs-testcontroller at request of users
236 who find it useful for testing basic OpenFlow setups. It is still not
237 a necessary or desirable part of most Open vSwitch deployments.
238 - Support for travis-ci.org based continuous integration builds has been
239 added. Build failures are reported to build@openvswitch.org. See INSTALL.md
240 file for additional details.
241 - Support for the Rapid Spanning Tree Protocol (IEEE 802.1D-2004).
242 The implementation has been tested successfully against the Ixia Automated
243 Network Validation Library (ANVL).
244 - Stats are no longer updated on fake bond interface.
245 - Keep active bond slave selection across OVS restart.
246 - A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
247 containers. If and when there is a native integration of Open vSwitch
248 with Docker, the wrapper script will be retired.
249 - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
250 protocols. This is generic tunneling mechanism for userspace datapath.
251 - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
252 - Support for Linux kernels up to 4.0.x
253 - The documentation now use the term 'destination' to mean one of syslog,
254 console or file for vlog logging instead of the previously used term
256 - Support for VXLAN Group Policy extension
257 - Initial support for the IETF Auto-Attach SPBM draft standard. This
258 contains rudimentary support for the LLDP protocol as needed for
260 - The default OpenFlow and OVSDB ports are now the IANA-assigned
261 numbers. OpenFlow is 6653 and OVSDB is 6640.
262 - Support for DPDK vHost.
263 - Support for outer UDP checksums in Geneve and VXLAN.
264 - The kernel vports with dependencies are no longer part of the overall
265 openvswitch.ko but built and loaded automatically as individual kernel
266 modules (vport-*.ko).
267 - Support for STT tunneling.
268 - ovs-sim: New developer tool for simulating multiple OVS instances.
269 See ovs-sim(1) for more information.
270 - Support to configure method (--syslog-method argument) that determines
271 how daemons will talk with syslog.
272 - Support for "ovs-appctl vlog/list-pattern" command that lets to query
273 logging message format for each destination.
277 ---------------------
278 - OpenFlow 1.1, 1.2, and 1.3 are now enabled by default in
280 - Linux kernel datapath now has an exact match cache optimizing the
281 flow matching process.
282 - Datapath flows now have partially wildcarded tranport port field
283 matches. This reduces userspace upcalls, but increases the
284 number of different masks in the datapath. The kernel datapath
285 exact match cache removes the overhead of matching the incoming
286 packets with the larger number of masks, but when paired with an
287 older kernel module, some workloads may perform worse with the
289 - Compatibility with autoconf 2.63 (previously >=2.64)
291 v2.2.0 - Internal Release
292 ---------------------
293 - Internal ports are no longer brought up by default, because it
294 should be an administrator task to bring up devices as they are
296 - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
298 - Port creation and configuration errors are now stored in a new error
299 column of the Interface table and included in 'ovs-vsctl show'.
300 - The "ovsdbmonitor" graphical tool has been removed, because it was
301 poorly maintained and not widely used.
302 - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
303 controllers against Open vSwitch. See INSTALL.md for details.
304 - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
305 - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
306 log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
308 - Support for Linux kernels up to 3.14. From Kernel 3.12 onwards OVS uses
309 tunnel API for GRE and VXLAN.
310 - Added DPDK support.
311 - Added support for custom vlog patterns in Python
315 ---------------------
316 - Address prefix tracking support for flow tables. New columns
317 "prefixes" in OVS-DB table "Flow_Table" controls which packet
318 header fields are used for address prefix tracking. Prefix
319 tracking allows the classifier to skip rules with longer than
320 necessary prefixes, resulting in better wildcarding for datapath
321 flows. Default configuration is to not use any fields for prefix
322 tracking. However, if any flow tables contain both exact matches
323 and masked matches for IP address fields, OVS performance may be
324 increased by using this feature.
325 * As of now, the fields for which prefix lookup can be enabled
326 are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
327 aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
328 (Using this feature for 'tun_id' would only make sense if the
329 tunnel IDs have prefix structure similar to IP addresses.)
330 * There is a maximum number of fields that can be enabled for any
331 one flow table. Currently this limit is 3.
333 $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
334 --id=@N1 create Flow_Table name=table0
335 $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
336 --id=@N1 create Flow_Table name=table1
337 $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
338 $ ovs-vsctl set Flow_Table table1 prefixes=[]
339 - TCP flags matching: OVS now supports matching of TCP flags. This
340 has an adverse performance impact when using OVS userspace 1.10
341 or older (no megaflows support) together with the new OVS kernel
342 module. It is recommended that the kernel and userspace modules
343 both are upgraded at the same time.
344 - The default OpenFlow and OVSDB ports will change to
345 IANA-assigned numbers in a future release. Consider updating
346 your installations to specify port numbers instead of using the
349 * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
350 * OVS limits the OpenFlow port numbers it assigns to port 32767 and
351 below, leaving port numbers above that range free for assignment
353 * ovs-vswitchd now honors changes to the "ofport_request" column
354 in the Interface table by changing the port's OpenFlow port
356 * The Open vSwitch software switch now supports OpenFlow groups.
357 - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
358 diagram only if graphviz package was installed at the build time.
359 - Support for Linux kernels up to 3.11
361 The "show" command also displays mega flow mask stats.
363 * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
364 - ovs-controller has been renamed test-controller. It is no longer
365 packaged or installed by default, because too many users assumed
366 incorrectly that ovs-controller was a necessary or desirable part
367 of an Open vSwitch deployment.
368 - Added vlog option to export to a UDP syslog sink.
370 * The "monitor" command can now monitor all tables in a database,
371 instead of being limited to a single table.
372 - The flow-eviction-threshold has been replaced by the flow-limit which is a
373 hard limit on the number of flows in the datapath. It defaults to 200,000
374 flows. OVS automatically adjusts this number depending on network
376 - Added IPv6 support for active and passive socket communications.
380 ---------------------
381 - The ovs-vswitchd process is no longer single-threaded. Multiple
382 threads are now used to handle flow set up and asynchronous
385 * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
386 1.3, which had experimental support in 1.10).
387 * Experimental protocol support for OpenFlow 1.1+ groups. This
388 does not yet include an implementation in the Open vSwitch
390 * Experimental protocol support for OpenFlow 1.2+ meters. This
391 does not yet include an implementation in the Open vSwitch
393 * New support for matching outer source and destination IP address
394 of tunneled packets, for tunnel ports configured with the newly
395 added "remote_ip=flow" and "local_ip=flow" options.
396 * Support for matching on metadata 'pkt_mark' for interacting with
397 other system components. On Linux this corresponds to the skb
399 * Support matching, rewriting SCTP ports
400 - The Interface table in the database has a new "ifindex" column to
401 report the interface's OS-assigned ifindex.
402 - New "check-oftest" Makefile target for running OFTest against Open
403 vSwitch. See README-OFTest for details.
404 - The flow eviction threshold has been moved to the Open_vSwitch table.
405 - Database names are now mandatory when specifying ovsdb-server options
406 through database paths (e.g. Private key option with the database name
407 should look like "--private-key=db:Open_vSwitch,SSL,private_key").
408 - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
409 - Support for Linux kernels up to 3.10
411 * New "ofp-parse" for printing OpenFlow messages read from a file.
412 * New commands for OpenFlow 1.1+ groups.
413 - Added configurable flow caching support to IPFIX exporter.
414 - Dropped support for Linux pre-2.6.32.
415 - Log file timestamps and ovsdb commit timestamps are now reported
416 with millisecond resolution. (Previous versions only reported
420 v1.11.0 - 28 Aug 2013
421 ---------------------
422 - Support for megaflows, which allows wildcarding in the kernel (and
423 any dpif implementation that supports wildcards). Depending on
424 the flow table and switch configuration, flow set up rates are
425 close to the Linux bridge.
426 - The "tutorial" directory contains a new tutorial for some advanced
427 Open vSwitch features.
428 - Stable bond mode has been removed.
429 - The autopath action has been removed.
430 - New support for the data encapsulation format of the LISP tunnel
431 protocol (RFC 6830). An external control plane or manual flow
432 setup is required for EID-to-RLOC mapping.
434 * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
435 1.1 and later are now implemented.
436 * New "stack" extension for use in actions, to push and pop from
438 * The "load" and "set_field" actions can now modify the "in_port". (This
439 allows one to enable output to a flow's input port by setting the
440 in_port to some unused value, such as OFPP_NONE.)
442 * New debugging commands "add-flow", "mod-flow", "del-flow".
443 * "dump-flows" now has a -m option to increase output verbosity.
444 - In dpif-based bridges, cache action translations, which can improve
445 flow set up performance by 80% with a complicated flow table.
446 - New syslog format, prefixed with "ovs|", to be easier to filter.
447 - RHEL: Removes the default firewall rule that allowed GRE traffic to
448 pass through. Any users that relied on this automatic firewall hole
449 will have to manually configure it. The ovs-ctl(8) manpage documents
450 the "enable-protocol" command that can be used as an alternative.
451 - New CFM demand mode which uses data traffic to indicate interface
454 v1.10.0 - 01 May 2013
455 ---------------------
456 - Bridge compatibility support has been removed. Any uses that
457 rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
458 or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
460 - The maximum size of the MAC learning table is now configurable.
461 - With the Linux datapath, packets for new flows are now queued
462 separately on a per-port basis, so it should no longer be
463 possible for a large number of new flows arriving on one port to
464 prevent new flows from being processed on other ports.
466 * Previously ovs-vsctl would retry connecting to the database forever,
467 causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
468 only tries once by default (use --retry to try forever). This change
469 means that you may want to remove uses of --timeout to avoid hangs
471 * Many "ovs-vsctl" database commands now accept an --if-exists option.
472 Please refer to the ovs-vsctl manpage for details.
474 - Experimental support for newer versions of OpenFlow. See
475 the "What versions of OpenFlow does Open vSwitch support?"
476 question in the FAQ for more details.
477 - The OpenFlow "dp_desc" may now be configured by setting the
478 value of other-config:dp-desc in the Bridge table.
479 - It is possible to request the OpenFlow port number with the
480 "ofport_request" column in the Interface table.
481 - The NXM flow_removed message now reports the OpenFlow table ID
482 from which the flow was removed.
484 - New support for the VXLAN tunnel protocol (see the IETF draft here:
485 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
486 - Tunneling requires the version of the kernel module paired with
487 Open vSwitch 1.9.0 or later.
488 - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
489 is no longer supported.
490 - Path MTU discovery is no longer supported.
491 - CAPWAP tunneling support removed.
492 - Tunnels with multicast destination ports are no longer supported.
494 - The "dump-flows" and "del-flows" no longer require an argument
495 if only one datapath exists.
497 - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
498 commands available allow control over logging rate limits.
499 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
500 that mimic the equivalent ovs-dpctl commands.
501 - The ofproto library is now responsible for assigning OpenFlow port
502 numbers. An ofproto implementation should assign them when
503 port_construct() is called.
504 - All dpif-based bridges of a particular type share a common
505 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
506 commands will now return information on that shared datapath. To
507 get the equivalent bridge-specific information, use the new
508 "ovs-appctl dpif/*" commands.
509 - Backward-incompatible changes:
510 - Earlier Open vSwitch versions treated ANY as a wildcard in flow
511 syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
512 conflict. ANY was rarely used in flow syntax, so we chose to
513 retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
514 - Patch ports no longer require kernel support, so they now work
515 with FreeBSD and the kernel module built into Linux 3.3 and later.
516 - New "sample" action.
520 ------------------------
522 - Support for ipv6 set action.
523 - SKB mark matching and setting.
524 - support for Linux kernels up to 3.8
525 - FreeBSD is now a supported platform, thanks to code contributions from
526 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
527 - ovs-bugtool: New --ovs option to report only OVS related information.
528 - New %t and %T log escapes to identify the subprogram within a
529 cooperating group of processes or threads that emitted a log message.
530 The default log patterns now include this information.
532 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
533 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
534 - Adds support for writing to the metadata field for a flow.
536 - The tunneling code no longer assumes input and output keys are
537 symmetric. If they are not, PMTUD needs to be disabled for
538 tunneling to work. Note this only applies to flow-based keys.
539 - New support for a nonstandard form of GRE that supports a 64-bit key.
540 - Tunnel Path MTU Discovery default value was set to 'disabled'.
541 This feature is deprecated and will be removed soon.
542 - Tunnel header caching removed.
544 - Commands and actions that accept port numbers now also accept keywords
545 that represent those ports (such as LOCAL, NONE, and ALL). This is
546 also the recommended way to specify these ports, for compatibility
547 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
548 for these ports for different purposes).
550 - Support requesting the port number with the "port_no" option in
551 the "add-if" command.
552 - ovs-pki: The "online PKI" features have been removed, along with
553 the ovs-pki-cgi program that facilitated it, because of some
554 alarmist insecurity claims. We do not believe that these claims
555 are true, but because we do not know of any users for this
556 feature it seems better on balance to remove it. (The ovs-pki-cgi
557 program was not included in distribution packaging.)
558 - ovsdb-server now enforces the immutability of immutable columns. This
559 was not enforced in earlier versions due to an oversight.
560 - The following features are now deprecated. They will be removed no
561 earlier than February 2013. Please email dev@openvswitch.org with
563 - Bridge compatibility.
565 - The autopath action.
566 - Interface type "null".
567 - Numeric values for reserved ports (see "ovs-ofctl" note above).
568 - Tunnel Path MTU Discovery.
569 - CAPWAP tunnel support.
570 - The data in the RARP packets can now be matched in the same way as the
575 ------------------------
576 *** Internal only release ***
577 - New FAQ. Please send updates and additions!
578 - Authors of controllers, please read the new section titled "Action
579 Reproduction" in DESIGN, which describes an Open vSwitch change in
580 behavior in corner cases that may affect some controllers.
582 - A new test utility that can create L3 tunnel between two Open
583 vSwitches and detect connectivity issues.
585 - New --sort and --rsort options for "dump-flows" command.
586 - "mod-port" command can now control all OpenFlow config flags.
588 - Allow general bitwise masking for IPv4 and IPv6 addresses in
589 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
591 - Allow support for arbitrary Ethernet masks. (Previously, only
592 the multicast bit in the destination address could be individually
594 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
595 - The OFPST_QUEUE request now reports an error if a specified port or
596 queue does not exist, or for requests for a specific queue on all
597 ports, if the specified queue does not exist on any port. (Previous
598 versions generally reported an empty set of results.)
599 - New "flow monitor" feature to allow controllers to be notified of
600 flow table changes as they happen.
601 - Additional protocols are not mirrored and dropped when forward-bpdu is
602 false. For a full list, see the ovs-vswitchd.conf.db man page.
603 - Open vSwitch now sends RARP packets in situations where it previously
604 sent a custom protocol, making it consistent with behavior of QEMU and
606 - All Open vSwitch programs and log files now show timestamps in UTC,
607 instead the local timezone, by default.
611 ------------------------
612 - kernel modules are renamed. openvswitch_mod.ko is now
613 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
614 - Increased the number of NXM registers to 8.
615 - Added ability to configure DSCP setting for manager and controller
616 connections. By default, these connections have a DSCP value of
617 Internetwork Control (0xc0).
618 - Added the granular link health statistics, 'cfm_health', to an
621 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
622 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
625 - Added the "dump-ports-desc" command to retrieve port
626 information using the new port description multipart messages.
628 - Added support for spawning ovs-test server from the client.
629 - Now ovs-test is able to automatically create test bridges and ports.
630 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
631 - Tripled flow setup performance.
632 - The "coverage/log" command previously available through ovs-appctl
633 has been replaced by "coverage/show". The new command replies with
634 coverage counter values, instead of logging them.
638 ------------------------
639 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
643 ------------------------
644 *** Internal only release ***
646 - LACP bonds no longer fall back to balance-slb when negotiations fail.
647 Instead they drop traffic.
648 - The default bond_mode changed from SLB to active-backup, to protect
649 unsuspecting users from the significant risks of SLB bonds (which are
650 documented in vswitchd/INTERNALS).
651 - Load balancing can be disabled by setting the bond-rebalance-interval
654 - Added support for bitwise matching on TCP and UDP ports.
655 See ovs-ofctl(8) for more information.
656 - NXM flow dumps now include times elapsed toward idle and hard
658 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
659 controllers more precise control over which OpenFlow messages they
660 receive asynchronously.
661 - New "fin_timeout" action.
662 - Added "fin_timeout" support to "learn" action.
663 - New Nicira action NXAST_CONTROLLER that offers additional features
664 over output to OFPP_CONTROLLER.
665 - When QoS settings for an interface do not configure a default queue
666 (queue 0), Open vSwitch now uses a default configuration for that
667 queue, instead of dropping all packets as in previous versions.
669 - Logging to console and file will have UTC timestamp as a default for
670 all the daemons. An example of the default format is
671 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
673 - The syntax of commands and options to set log levels was simplified,
674 to make it easier to remember.
675 - New support for limiting the number of flows in an OpenFlow flow
676 table, with configurable policy for evicting flows upon
677 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
678 for more information.
679 - New "enable-async-messages" column in the Controller table. If set to
680 false, OpenFlow connections to the controller will initially have all
681 asynchronous messages disabled, overriding normal OpenFlow behavior.
682 - ofproto-provider interface:
683 - "struct rule" has a new member "used" that ofproto implementations
684 should maintain by updating with ofproto_rule_update_used().
686 - The new option --timestamp causes the "monitor" command to print
687 a timestamp with every update.
688 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
692 ------------------------
694 - Added support for querying, modifying, and deleting flows
695 based on flow cookie when using NXM.
696 - Added new NXM_PACKET_IN format.
697 - Added new NXAST_DEC_TTL action.
699 - Added daemonization support to the monitor and snoop commands.
701 - The "find" command supports new set relational operators
702 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
703 - ovsdb-tool now uses the typical database and schema installation
704 directories as defaults.
705 - The default MAC learning timeout has been increased from 60 seconds
706 to 300 seconds. The MAC learning timeout is now configurable.
710 ------------------------
711 - Compatible with Open vSwitch kernel module included in Linux 3.3.
712 - New "VLAN splinters" feature to work around buggy device drivers
713 in old Linux versions. (This feature is deprecated. When
714 broken device drivers are no longer in widespread use, we will
715 delete this feature.) See ovs-vswitchd.conf.db(5) for more
718 - Added ability to match on IPv6 flow label through NXM.
719 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
720 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
721 - Added ability to modify ECN bits in IPv4.
722 - Added ability to modify TTL in IPv4.
724 - Don't require the "normal" action to use mirrors. Traffic will
725 now be properly mirrored for any flows, regardless of their
727 - Track packet and byte statistics sent on mirrors.
728 - The sFlow implementation can now usually infer the correct agent
729 device instead of having to be told explicitly.
731 - New "fdb/flush" command to flush bridge's MAC learning table.
733 - A new distributed testing tool that allows one to diagnose performance
734 and connectivity issues. This tool currently is not included in RH or
736 - RHEL packaging now supports integration with Red Hat network scripts.
738 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
739 to active-backup. SLB bonds carry significant risks with them
740 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
741 users from running into. Users are advised to update any scripts or
742 configuration which may be negatively impacted by explicitly setting
743 the bond mode which they want to use.
747 ------------------------
749 - Added an OpenFlow extension which allows the "output" action to accept
751 - Added an OpenFlow extension for flexible learning.
752 - Bumped number of NXM registers from four to five.
754 - New "version" command to determine version of running daemon.
755 - If no argument is provided for "cfm/show", displays detailed
756 information about all interfaces with CFM enabled.
757 - If no argument is provided for "lacp/show", displays detailed
758 information about all ports with LACP enabled.
760 - New "set-if" command to modify a datapath port's configuration.
762 - The software switch now supports 255 OpenFlow tables, instead
763 of just one. By default, only table 0 is consulted, but the
764 new NXAST_RESUBMIT_TABLE action can look up in additional
765 tables. Tables 128 and above are reserved for use by the
766 switch itself; please use only tables 0 through 127.
767 - Add support for 802.1D spanning tree (STP).
768 - Fragment handling extensions:
769 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
770 fields are made available for matching in fragments with
772 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
773 via "ip_frag" in ovs-ofctl).
774 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
775 fragment handling policy.
776 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
777 By default it remains compatible with the old version and other
778 standards-based implementations.
779 - Flow setups are now processed in a round-robin manner across ports
780 to prevent any single client from monopolizing the CPU and conducting
781 a denial of service attack.
782 - Added support for native VLAN tagging. A new "vlan_mode"
783 parameter can be set for "port". Possible values: "access",
784 "trunk", "native-tagged" and "native-untagged".
785 - test-openflowd has been removed. Please use ovs-vswitchd instead.
788 ------------------------
789 - New "ofproto" abstraction layer to ease porting to hardware
791 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
792 - Datapath support for Linux kernels up to 3.0.
794 - New "bundle" and "bundle_load" action extensions.
796 - Implement table unique constraints.
797 - Support cooperative locking between callers.
799 - New "-s" option for "show" command prints packet and byte
800 counters for each port.
802 - New "--readd" option for "replace-flows".
804 - New "show" command to print an overview of configuration.
805 - New "comment" command to add remark that explains intentions.
806 - ovs-brcompatd has been rewritten to fix long-standing bugs.
807 - ovs-openflowd has been renamed test-openflowd and moved into the
808 tests directory. Its presence confused too many users. Please
809 use ovs-vswitchd instead.
810 - New ovs-benchmark utility to test flow setup performance.
811 - A new log level "off" has been added. Configuring a log facility
812 "off" prevents any messages from being logged to it. Previously,
813 "emer" was effectively "off" because no messages were ever logged at
814 level "emer". Now, errors that cause a process to exit are logged
816 - "configure" option --with-l26 has been renamed --with-linux, and
817 --with-l26-source has been renamed --with-linux-source. The old
818 names will be removed after the next release, so please update
820 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
821 datapath/linux-2.6/compat-2.6 directories.
823 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
824 Please use the extensible match extensions instead.
825 - Removed the Maintenance_Point and Monitor tables in an effort
826 to simplify 802.1ag configuration.
827 - Performance and scalability improvements
831 ------------------------
832 - Ability to define policies over IPv6
835 - Support for extensible match extensions to OpenFlow
837 - Support for HFSC qdisc.
838 - Queue used by in-band control can now be configured.
840 - Kernel<->userspace interface has been reworked and should be
841 close to a stable ABI now.
842 - "Port group" concept has been dropped.
843 - GRE over IPSEC tunnels
845 - New active backup bonding mode.
846 - New L4 hashing support when LACP is enabled.
847 - Source MAC hash now includes VLAN field also.
849 - Greatly improved handling of large flow tables
851 - "show" command now prints full vport configuration.
852 - "dump-groups" command removed since kernel support for
853 port groups was dropped.
855 - New commands for working with the new Managers table.
856 - "list" command enhanced with new formatting options and --columns
858 - "get" command now accepts new --id option.
859 - New "find" command.
861 - New "queue-stats" command for printing queue stats.
862 - New commands "replace-flows" and "diff-flows".
863 - Commands to add and remove flows can now read from files.
864 - New --flow-format option to enable or disable NXM.
865 - New --more option to increase OpenFlow message verbosity.
866 - Removed "tun-cookie" command, which is no longer useful.
867 - ovs-controller enhancements for testing various features.
868 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
869 bugs. New ovs-vlan-bug-workaround command for enabling and
870 disabling a workaround for these driver bugs.
872 - "Resubmit" actions now update flow statistics.
873 - New "register" extension for use in matching and actions, via NXM.
874 - New "multipath" experimental action extension.
875 - New support for matching multicast Ethernet frames, via NXM.
876 - New extension for OpenFlow vendor error codes.
877 - New extension to set the QoS output queue without actually
878 sending to an output port.
879 - Open vSwitch now reports a single flow table, instead of
880 separate hash and wildcard tables. This better models the
881 current implementation.
882 - New experimental "note" action.
883 - New "ofproto/trace" ovs-appctl command and associated utilities
884 to ease debugging complex flow tables.
886 - Schema documentation now includes an entity-relationship diagram.
887 - The database is now garbage collected. In most tables,
888 unreferenced rows will be deleted automatically.
889 - Many tables now include statistics updated periodically by
890 ovs-vswitchd or ovsdb-server.
891 - Every table now has an "external-ids" column for use by OVS
893 - There is no default controller anymore. Each bridge must have its
894 controller individually specified.
895 - The "fail-mode" is now a property of a Bridge instead of a Controller.
896 - New versioning and checksum features.
897 - New Managers table and manager_options column in Open_vSwitch table
898 for specifying managers. The old "managers" column in the
899 Open_vSwitch table has been removed.
900 - Many "name" columns are now immutable.
902 - Dropped support for XenServer pre-5.6.100.
903 - Dropped support for Linux pre-2.6.18.
904 - Dropped controller discovery support.
905 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
906 Statistics reporting in the database is a rough equivalent.
907 - Dropped the "corekeeper" package (now separate, at
908 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
909 - Performance and scalability improvements
912 v1.1.0pre2 - 13 Sep 2010
913 ------------------------
916 v1.1.0pre1 - 31 Aug 2010
917 ------------------------
918 - OpenFlow 1.0 slicing (QoS) functionality
919 - Python bindings for configuration database (no write support)
920 - Performance and scalability improvements
925 - New "patch" interface type
930 - Configuration database with remote management
933 - Support for XenServer 5.5 and 5.6
934 - Performance and scalability improvements
937 v0.99.2 - 18 Feb 2010
938 ---------------------
941 v0.99.1 - 25 Jan 2010
942 ---------------------
943 - Add support for sFlow(R)
944 - Make headers compatible with C++
947 v0.99.0 - 14 Jan 2010
948 ---------------------
949 - User-space forwarding engine
952 v0.90.7 - 29 Nov 2009
953 ---------------------
954 - Add support for NetFlow active timeouts
961 v0.90.5 - 21 Sep 2009
962 ---------------------
963 - Generalize in-band control to more diverse network setups
projects / ovs.git / blob