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.
8 * OpenFlow 1.4+ OFPT_TABLE_STATUS is now supported.
9 * New property-based packet-in message format NXT_PACKET_IN2 with support
10 for arbitrary user-provided data and for serializing flow table
11 traversal into a continuation for later resumption.
12 * New extension message NXT_SET_ASYNC_CONFIG2 to allow OpenFlow 1.4-like
13 control over asynchronous messages in earlier versions of OpenFlow.
14 * OpenFlow 1.3 Extension 230, adding OpenFlow Bundles support, is
15 now implemented. Only flow mod and port mod messages are supported
18 * queue-get-config command now allows a queue ID to be specified.
19 * '--bundle' option can now be used with OpenFlow 1.3.
21 * New option "n_rxq" for PMD interfaces.
22 Old 'other_config:n-dpdk-rxqs' is no longer supported.
23 * New appctl command 'dpif-netdev/pmd-rxq-show' to check the port/rxq
25 * Type of log messages from PMD threads changed from INFO to DBG.
26 * QoS functionality with sample egress-policer implementation.
27 - ovs-benchmark: This utility has been removed due to lack of use and
30 * New "vlog/close" command.
32 * Remove max number of sessions limit, to enable connection scaling
35 * Added support for Python 3.4+ in addition to existing support
38 * Introduced SELinux policy package.
42 - Dropped support for Python older than version 2.7. As a consequence,
43 using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
44 have Python 2.4) requires first installing Python 2.7.
46 * Group chaining (where one OpenFlow group triggers another) is
48 * OpenFlow 1.4+ "importance" is now considered for flow eviction.
49 * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
50 * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
51 * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
52 * Allow modifying the ICMPv4/ICMPv6 type and code fields.
53 * OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG are
56 * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
58 * Geneve tunnels can now match and set options and the OAM bit.
59 * The nonstandard GRE64 tunnel extension has been dropped.
60 - Support Multicast Listener Discovery (MLDv1 and MLDv2).
61 - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
62 - sFlow agent now reports tunnel and MPLS structures.
63 - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
64 targets to run a new system testsuite. These tests can be run inside
65 a Vagrant box. See INSTALL.md for details
66 - Mark --syslog-target argument as deprecated. It will be removed in
68 - Added --user option to all daemons
69 - Add support for connection tracking through the new "ct" action
70 and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
71 available on Linux kernels with the connection tracking module loaded.
72 - Add experimental version of OVN. OVN, the Open Virtual Network, is a
73 system to support virtual network abstraction. OVN complements the
74 existing capabilities of OVS to add native support for virtual network
75 abstractions, such as virtual L2 and L3 overlays and security groups.
77 * DPDK ports may now be created via network scripts (see README.RHEL).
80 * Added multiqueue support to vhost-user
81 * Note: QEMU 2.5+ required for multiqueue support
85 - Flow table modifications are now atomic, meaning that each packet
86 now sees a coherent version of the OpenFlow pipeline. For
87 example, if a controller removes all flows with a single OpenFlow
88 "flow_mod", no packet sees an intermediate version of the OpenFlow
89 pipeline where only some of the flows have been deleted.
90 - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
91 - Add bash command-line completion support for ovs-vsctl Please check
92 utilities/ovs-command-compgen.INSTALL.md for how to use.
93 - The MAC learning feature now includes per-port fairness to mitigate
95 - New support for a "conjunctive match" OpenFlow extension, which
96 allows constructing OpenFlow matches of the form "field1 in
97 {a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
98 see documentation for the "conjunction" action in ovs-ofctl(8).
99 - Add bash command-line completion support for ovs-appctl/ovs-dpctl/
100 ovs-ofctl/ovsdb-tool commands. Please check
101 utilities/ovs-command-compgen.INSTALL.md for how to use.
102 - The "learn" action supports a new flag "delete_learned" that causes
103 the learned flows to be deleted when the flow with the "learn" action
105 - Basic support for the Geneve tunneling protocol. It is not yet
106 possible to generate or match options. This is planned for a future
107 release. The protocol is documented at
108 http://tools.ietf.org/html/draft-gross-geneve-00
109 - The OVS database now reports controller rate limiting statistics.
110 - sflow now exports information about LACP-based bonds, port names, and
111 OpenFlow port numbers, as well as datapath performance counters.
112 - ovs-dpctl functionality is now available for datapaths integrated
113 into ovs-vswitchd, via ovs-appctl. Some existing ovs-appctl
114 commands are now redundant and will be removed in a future
115 release. See ovs-vswitchd(8) for details.
117 * OpenFlow 1.4 bundles are now supported for flow mods and port
118 mods. For flow mods, both 'atomic' and 'ordered' bundle flags
119 are trivially supported, as all bundled messages are executed
120 in the order they were added and all flow table modifications
121 are now atomic to the datapath. Port mods may not appear in
122 atomic bundles, as port status modifications are not atomic.
123 * IPv6 flow label and neighbor discovery fields are now modifiable.
124 * OpenFlow 1.5 extended registers are now supported.
125 * The OpenFlow 1.5 actset_output field is now supported.
126 * OpenFlow 1.5 Copy-Field action is now supported.
127 * OpenFlow 1.5 masked Set-Field action is now supported.
128 * OpenFlow 1.3+ table features requests are now supported (read-only).
129 * Nicira extension "move" actions may now be included in action sets.
130 * "resubmit" actions may now be included in action sets. The resubmit
131 is executed last, and only if the action set has no "output" or "group"
133 * OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
134 * A new Netronome extension to OpenFlow 1.5+ allows control over the
135 fields hashed for OpenFlow select groups. See "selection_method" and
136 related options in ovs-ofctl(8) for details.
137 - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
138 ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
139 use an OpenFlow 1.4 bundle to operate the modifications as a single
140 atomic transaction. If any of the flow mods in a transaction fail, none
141 of them are executed. All flow mods in a bundle appear to datapath
142 lookups simultaneously.
143 - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
144 mods as an input by allowing the flow specification to start with an
145 explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
146 keyword. A missing keyword is treated as 'add', so this is fully
147 backwards compatible. With the new '--bundle' option all the flow mods
148 are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
149 - ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
150 MD5 is no longer secure and some operating systems have started to disable
152 - ovsdb-server: New OVSDB protocol extension allows inequality tests on
153 "optional scalar" columns. See ovsdb-server(1) for details.
154 - ovs-vsctl now permits immutable columns in a new row to be modified in
155 the same transaction that creates the row.
156 - test-controller has been renamed ovs-testcontroller at request of users
157 who find it useful for testing basic OpenFlow setups. It is still not
158 a necessary or desirable part of most Open vSwitch deployments.
159 - Support for travis-ci.org based continuous integration builds has been
160 added. Build failures are reported to build@openvswitch.org. See INSTALL.md
161 file for additional details.
162 - Support for the Rapid Spanning Tree Protocol (IEEE 802.1D-2004).
163 The implementation has been tested successfully against the Ixia Automated
164 Network Validation Library (ANVL).
165 - Stats are no longer updated on fake bond interface.
166 - Keep active bond slave selection across OVS restart.
167 - A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
168 containers. If and when there is a native integration of Open vSwitch
169 with Docker, the wrapper script will be retired.
170 - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
171 protocols. This is generic tunneling mechanism for userspace datapath.
172 - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
173 - Support for Linux kernels up to 4.0.x
174 - The documentation now use the term 'destination' to mean one of syslog,
175 console or file for vlog logging instead of the previously used term
177 - Support for VXLAN Group Policy extension
178 - Initial support for the IETF Auto-Attach SPBM draft standard. This
179 contains rudimentary support for the LLDP protocol as needed for
181 - The default OpenFlow and OVSDB ports are now the IANA-assigned
182 numbers. OpenFlow is 6653 and OVSDB is 6640.
183 - Support for DPDK vHost.
184 - Support for outer UDP checksums in Geneve and VXLAN.
185 - The kernel vports with dependencies are no longer part of the overall
186 openvswitch.ko but built and loaded automatically as individual kernel
187 modules (vport-*.ko).
188 - Support for STT tunneling.
189 - ovs-sim: New developer tool for simulating multiple OVS instances.
190 See ovs-sim(1) for more information.
191 - Support to configure method (--syslog-method argument) that determines
192 how daemons will talk with syslog.
193 - Support for "ovs-appctl vlog/list-pattern" command that lets to query
194 logging message format for each destination.
198 ---------------------
199 - OpenFlow 1.1, 1.2, and 1.3 are now enabled by default in
201 - Linux kernel datapath now has an exact match cache optimizing the
202 flow matching process.
203 - Datapath flows now have partially wildcarded tranport port field
204 matches. This reduces userspace upcalls, but increases the
205 number of different masks in the datapath. The kernel datapath
206 exact match cache removes the overhead of matching the incoming
207 packets with the larger number of masks, but when paired with an
208 older kernel module, some workloads may perform worse with the
210 - Compatibility with autoconf 2.63 (previously >=2.64)
212 v2.2.0 - Internal Release
213 ---------------------
214 - Internal ports are no longer brought up by default, because it
215 should be an administrator task to bring up devices as they are
217 - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
219 - Port creation and configuration errors are now stored in a new error
220 column of the Interface table and included in 'ovs-vsctl show'.
221 - The "ovsdbmonitor" graphical tool has been removed, because it was
222 poorly maintained and not widely used.
223 - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
224 controllers against Open vSwitch. See INSTALL.md for details.
225 - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
226 - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
227 log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
229 - Support for Linux kernels up to 3.14. From Kernel 3.12 onwards OVS uses
230 tunnel API for GRE and VXLAN.
231 - Added DPDK support.
232 - Added support for custom vlog patterns in Python
236 ---------------------
237 - Address prefix tracking support for flow tables. New columns
238 "prefixes" in OVS-DB table "Flow_Table" controls which packet
239 header fields are used for address prefix tracking. Prefix
240 tracking allows the classifier to skip rules with longer than
241 necessary prefixes, resulting in better wildcarding for datapath
242 flows. Default configuration is to not use any fields for prefix
243 tracking. However, if any flow tables contain both exact matches
244 and masked matches for IP address fields, OVS performance may be
245 increased by using this feature.
246 * As of now, the fields for which prefix lookup can be enabled
247 are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
248 aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
249 (Using this feature for 'tun_id' would only make sense if the
250 tunnel IDs have prefix structure similar to IP addresses.)
251 * There is a maximum number of fields that can be enabled for any
252 one flow table. Currently this limit is 3.
254 $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
255 --id=@N1 create Flow_Table name=table0
256 $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
257 --id=@N1 create Flow_Table name=table1
258 $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
259 $ ovs-vsctl set Flow_Table table1 prefixes=[]
260 - TCP flags matching: OVS now supports matching of TCP flags. This
261 has an adverse performance impact when using OVS userspace 1.10
262 or older (no megaflows support) together with the new OVS kernel
263 module. It is recommended that the kernel and userspace modules
264 both are upgraded at the same time.
265 - The default OpenFlow and OVSDB ports will change to
266 IANA-assigned numbers in a future release. Consider updating
267 your installations to specify port numbers instead of using the
270 * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
271 * OVS limits the OpenFlow port numbers it assigns to port 32767 and
272 below, leaving port numbers above that range free for assignment
274 * ovs-vswitchd now honors changes to the "ofport_request" column
275 in the Interface table by changing the port's OpenFlow port
277 * The Open vSwitch software switch now supports OpenFlow groups.
278 - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
279 diagram only if graphviz package was installed at the build time.
280 - Support for Linux kernels up to 3.11
282 The "show" command also displays mega flow mask stats.
284 * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
285 - ovs-controller has been renamed test-controller. It is no longer
286 packaged or installed by default, because too many users assumed
287 incorrectly that ovs-controller was a necessary or desirable part
288 of an Open vSwitch deployment.
289 - Added vlog option to export to a UDP syslog sink.
291 * The "monitor" command can now monitor all tables in a database,
292 instead of being limited to a single table.
293 - The flow-eviction-threshold has been replaced by the flow-limit which is a
294 hard limit on the number of flows in the datapath. It defaults to 200,000
295 flows. OVS automatically adjusts this number depending on network
297 - Added IPv6 support for active and passive socket communications.
301 ---------------------
302 - The ovs-vswitchd process is no longer single-threaded. Multiple
303 threads are now used to handle flow set up and asynchronous
306 * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
307 1.3, which had experimental support in 1.10).
308 * Experimental protocol support for OpenFlow 1.1+ groups. This
309 does not yet include an implementation in the Open vSwitch
311 * Experimental protocol support for OpenFlow 1.2+ meters. This
312 does not yet include an implementation in the Open vSwitch
314 * New support for matching outer source and destination IP address
315 of tunneled packets, for tunnel ports configured with the newly
316 added "remote_ip=flow" and "local_ip=flow" options.
317 * Support for matching on metadata 'pkt_mark' for interacting with
318 other system components. On Linux this corresponds to the skb
320 * Support matching, rewriting SCTP ports
321 - The Interface table in the database has a new "ifindex" column to
322 report the interface's OS-assigned ifindex.
323 - New "check-oftest" Makefile target for running OFTest against Open
324 vSwitch. See README-OFTest for details.
325 - The flow eviction threshold has been moved to the Open_vSwitch table.
326 - Database names are now mandatory when specifying ovsdb-server options
327 through database paths (e.g. Private key option with the database name
328 should look like "--private-key=db:Open_vSwitch,SSL,private_key").
329 - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
330 - Support for Linux kernels up to 3.10
332 * New "ofp-parse" for printing OpenFlow messages read from a file.
333 * New commands for OpenFlow 1.1+ groups.
334 - Added configurable flow caching support to IPFIX exporter.
335 - Dropped support for Linux pre-2.6.32.
336 - Log file timestamps and ovsdb commit timestamps are now reported
337 with millisecond resolution. (Previous versions only reported
341 v1.11.0 - 28 Aug 2013
342 ---------------------
343 - Support for megaflows, which allows wildcarding in the kernel (and
344 any dpif implementation that supports wildcards). Depending on
345 the flow table and switch configuration, flow set up rates are
346 close to the Linux bridge.
347 - The "tutorial" directory contains a new tutorial for some advanced
348 Open vSwitch features.
349 - Stable bond mode has been removed.
350 - The autopath action has been removed.
351 - New support for the data encapsulation format of the LISP tunnel
352 protocol (RFC 6830). An external control plane or manual flow
353 setup is required for EID-to-RLOC mapping.
355 * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
356 1.1 and later are now implemented.
357 * New "stack" extension for use in actions, to push and pop from
359 * The "load" and "set_field" actions can now modify the "in_port". (This
360 allows one to enable output to a flow's input port by setting the
361 in_port to some unused value, such as OFPP_NONE.)
363 * New debugging commands "add-flow", "mod-flow", "del-flow".
364 * "dump-flows" now has a -m option to increase output verbosity.
365 - In dpif-based bridges, cache action translations, which can improve
366 flow set up performance by 80% with a complicated flow table.
367 - New syslog format, prefixed with "ovs|", to be easier to filter.
368 - RHEL: Removes the default firewall rule that allowed GRE traffic to
369 pass through. Any users that relied on this automatic firewall hole
370 will have to manually configure it. The ovs-ctl(8) manpage documents
371 the "enable-protocol" command that can be used as an alternative.
372 - New CFM demand mode which uses data traffic to indicate interface
375 v1.10.0 - 01 May 2013
376 ---------------------
377 - Bridge compatibility support has been removed. Any uses that
378 rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
379 or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
381 - The maximum size of the MAC learning table is now configurable.
382 - With the Linux datapath, packets for new flows are now queued
383 separately on a per-port basis, so it should no longer be
384 possible for a large number of new flows arriving on one port to
385 prevent new flows from being processed on other ports.
387 * Previously ovs-vsctl would retry connecting to the database forever,
388 causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
389 only tries once by default (use --retry to try forever). This change
390 means that you may want to remove uses of --timeout to avoid hangs
392 * Many "ovs-vsctl" database commands now accept an --if-exists option.
393 Please refer to the ovs-vsctl manpage for details.
395 - Experimental support for newer versions of OpenFlow. See
396 the "What versions of OpenFlow does Open vSwitch support?"
397 question in the FAQ for more details.
398 - The OpenFlow "dp_desc" may now be configured by setting the
399 value of other-config:dp-desc in the Bridge table.
400 - It is possible to request the OpenFlow port number with the
401 "ofport_request" column in the Interface table.
402 - The NXM flow_removed message now reports the OpenFlow table ID
403 from which the flow was removed.
405 - New support for the VXLAN tunnel protocol (see the IETF draft here:
406 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
407 - Tunneling requires the version of the kernel module paired with
408 Open vSwitch 1.9.0 or later.
409 - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
410 is no longer supported.
411 - Path MTU discovery is no longer supported.
412 - CAPWAP tunneling support removed.
413 - Tunnels with multicast destination ports are no longer supported.
415 - The "dump-flows" and "del-flows" no longer require an argument
416 if only one datapath exists.
418 - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
419 commands available allow control over logging rate limits.
420 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
421 that mimic the equivalent ovs-dpctl commands.
422 - The ofproto library is now responsible for assigning OpenFlow port
423 numbers. An ofproto implementation should assign them when
424 port_construct() is called.
425 - All dpif-based bridges of a particular type share a common
426 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
427 commands will now return information on that shared datapath. To
428 get the equivalent bridge-specific information, use the new
429 "ovs-appctl dpif/*" commands.
430 - Backward-incompatible changes:
431 - Earlier Open vSwitch versions treated ANY as a wildcard in flow
432 syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
433 conflict. ANY was rarely used in flow syntax, so we chose to
434 retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
435 - Patch ports no longer require kernel support, so they now work
436 with FreeBSD and the kernel module built into Linux 3.3 and later.
437 - New "sample" action.
441 ------------------------
443 - Support for ipv6 set action.
444 - SKB mark matching and setting.
445 - support for Linux kernels up to 3.8
446 - FreeBSD is now a supported platform, thanks to code contributions from
447 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
448 - ovs-bugtool: New --ovs option to report only OVS related information.
449 - New %t and %T log escapes to identify the subprogram within a
450 cooperating group of processes or threads that emitted a log message.
451 The default log patterns now include this information.
453 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
454 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
455 - Adds support for writing to the metadata field for a flow.
457 - The tunneling code no longer assumes input and output keys are
458 symmetric. If they are not, PMTUD needs to be disabled for
459 tunneling to work. Note this only applies to flow-based keys.
460 - New support for a nonstandard form of GRE that supports a 64-bit key.
461 - Tunnel Path MTU Discovery default value was set to 'disabled'.
462 This feature is deprecated and will be removed soon.
463 - Tunnel header caching removed.
465 - Commands and actions that accept port numbers now also accept keywords
466 that represent those ports (such as LOCAL, NONE, and ALL). This is
467 also the recommended way to specify these ports, for compatibility
468 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
469 for these ports for different purposes).
471 - Support requesting the port number with the "port_no" option in
472 the "add-if" command.
473 - ovs-pki: The "online PKI" features have been removed, along with
474 the ovs-pki-cgi program that facilitated it, because of some
475 alarmist insecurity claims. We do not believe that these claims
476 are true, but because we do not know of any users for this
477 feature it seems better on balance to remove it. (The ovs-pki-cgi
478 program was not included in distribution packaging.)
479 - ovsdb-server now enforces the immutability of immutable columns. This
480 was not enforced in earlier versions due to an oversight.
481 - The following features are now deprecated. They will be removed no
482 earlier than February 2013. Please email dev@openvswitch.org with
484 - Bridge compatibility.
486 - The autopath action.
487 - Interface type "null".
488 - Numeric values for reserved ports (see "ovs-ofctl" note above).
489 - Tunnel Path MTU Discovery.
490 - CAPWAP tunnel support.
491 - The data in the RARP packets can now be matched in the same way as the
496 ------------------------
497 *** Internal only release ***
498 - New FAQ. Please send updates and additions!
499 - Authors of controllers, please read the new section titled "Action
500 Reproduction" in DESIGN, which describes an Open vSwitch change in
501 behavior in corner cases that may affect some controllers.
503 - A new test utility that can create L3 tunnel between two Open
504 vSwitches and detect connectivity issues.
506 - New --sort and --rsort options for "dump-flows" command.
507 - "mod-port" command can now control all OpenFlow config flags.
509 - Allow general bitwise masking for IPv4 and IPv6 addresses in
510 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
512 - Allow support for arbitrary Ethernet masks. (Previously, only
513 the multicast bit in the destination address could be individually
515 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
516 - The OFPST_QUEUE request now reports an error if a specified port or
517 queue does not exist, or for requests for a specific queue on all
518 ports, if the specified queue does not exist on any port. (Previous
519 versions generally reported an empty set of results.)
520 - New "flow monitor" feature to allow controllers to be notified of
521 flow table changes as they happen.
522 - Additional protocols are not mirrored and dropped when forward-bpdu is
523 false. For a full list, see the ovs-vswitchd.conf.db man page.
524 - Open vSwitch now sends RARP packets in situations where it previously
525 sent a custom protocol, making it consistent with behavior of QEMU and
527 - All Open vSwitch programs and log files now show timestamps in UTC,
528 instead the local timezone, by default.
532 ------------------------
533 - kernel modules are renamed. openvswitch_mod.ko is now
534 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
535 - Increased the number of NXM registers to 8.
536 - Added ability to configure DSCP setting for manager and controller
537 connections. By default, these connections have a DSCP value of
538 Internetwork Control (0xc0).
539 - Added the granular link health statistics, 'cfm_health', to an
542 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
543 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
546 - Added the "dump-ports-desc" command to retrieve port
547 information using the new port description multipart messages.
549 - Added support for spawning ovs-test server from the client.
550 - Now ovs-test is able to automatically create test bridges and ports.
551 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
552 - Tripled flow setup performance.
553 - The "coverage/log" command previously available through ovs-appctl
554 has been replaced by "coverage/show". The new command replies with
555 coverage counter values, instead of logging them.
559 ------------------------
560 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
564 ------------------------
565 *** Internal only release ***
567 - LACP bonds no longer fall back to balance-slb when negotiations fail.
568 Instead they drop traffic.
569 - The default bond_mode changed from SLB to active-backup, to protect
570 unsuspecting users from the significant risks of SLB bonds (which are
571 documented in vswitchd/INTERNALS).
572 - Load balancing can be disabled by setting the bond-rebalance-interval
575 - Added support for bitwise matching on TCP and UDP ports.
576 See ovs-ofctl(8) for more information.
577 - NXM flow dumps now include times elapsed toward idle and hard
579 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
580 controllers more precise control over which OpenFlow messages they
581 receive asynchronously.
582 - New "fin_timeout" action.
583 - Added "fin_timeout" support to "learn" action.
584 - New Nicira action NXAST_CONTROLLER that offers additional features
585 over output to OFPP_CONTROLLER.
586 - When QoS settings for an interface do not configure a default queue
587 (queue 0), Open vSwitch now uses a default configuration for that
588 queue, instead of dropping all packets as in previous versions.
590 - Logging to console and file will have UTC timestamp as a default for
591 all the daemons. An example of the default format is
592 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
594 - The syntax of commands and options to set log levels was simplified,
595 to make it easier to remember.
596 - New support for limiting the number of flows in an OpenFlow flow
597 table, with configurable policy for evicting flows upon
598 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
599 for more information.
600 - New "enable-async-messages" column in the Controller table. If set to
601 false, OpenFlow connections to the controller will initially have all
602 asynchronous messages disabled, overriding normal OpenFlow behavior.
603 - ofproto-provider interface:
604 - "struct rule" has a new member "used" that ofproto implementations
605 should maintain by updating with ofproto_rule_update_used().
607 - The new option --timestamp causes the "monitor" command to print
608 a timestamp with every update.
609 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
613 ------------------------
615 - Added support for querying, modifying, and deleting flows
616 based on flow cookie when using NXM.
617 - Added new NXM_PACKET_IN format.
618 - Added new NXAST_DEC_TTL action.
620 - Added daemonization support to the monitor and snoop commands.
622 - The "find" command supports new set relational operators
623 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
624 - ovsdb-tool now uses the typical database and schema installation
625 directories as defaults.
626 - The default MAC learning timeout has been increased from 60 seconds
627 to 300 seconds. The MAC learning timeout is now configurable.
631 ------------------------
632 - Compatible with Open vSwitch kernel module included in Linux 3.3.
633 - New "VLAN splinters" feature to work around buggy device drivers
634 in old Linux versions. (This feature is deprecated. When
635 broken device drivers are no longer in widespread use, we will
636 delete this feature.) See ovs-vswitchd.conf.db(5) for more
639 - Added ability to match on IPv6 flow label through NXM.
640 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
641 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
642 - Added ability to modify ECN bits in IPv4.
643 - Added ability to modify TTL in IPv4.
645 - Don't require the "normal" action to use mirrors. Traffic will
646 now be properly mirrored for any flows, regardless of their
648 - Track packet and byte statistics sent on mirrors.
649 - The sFlow implementation can now usually infer the correct agent
650 device instead of having to be told explicitly.
652 - New "fdb/flush" command to flush bridge's MAC learning table.
654 - A new distributed testing tool that allows one to diagnose performance
655 and connectivity issues. This tool currently is not included in RH or
657 - RHEL packaging now supports integration with Red Hat network scripts.
659 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
660 to active-backup. SLB bonds carry significant risks with them
661 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
662 users from running into. Users are advised to update any scripts or
663 configuration which may be negatively impacted by explicitly setting
664 the bond mode which they want to use.
668 ------------------------
670 - Added an OpenFlow extension which allows the "output" action to accept
672 - Added an OpenFlow extension for flexible learning.
673 - Bumped number of NXM registers from four to five.
675 - New "version" command to determine version of running daemon.
676 - If no argument is provided for "cfm/show", displays detailed
677 information about all interfaces with CFM enabled.
678 - If no argument is provided for "lacp/show", displays detailed
679 information about all ports with LACP enabled.
681 - New "set-if" command to modify a datapath port's configuration.
683 - The software switch now supports 255 OpenFlow tables, instead
684 of just one. By default, only table 0 is consulted, but the
685 new NXAST_RESUBMIT_TABLE action can look up in additional
686 tables. Tables 128 and above are reserved for use by the
687 switch itself; please use only tables 0 through 127.
688 - Add support for 802.1D spanning tree (STP).
689 - Fragment handling extensions:
690 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
691 fields are made available for matching in fragments with
693 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
694 via "ip_frag" in ovs-ofctl).
695 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
696 fragment handling policy.
697 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
698 By default it remains compatible with the old version and other
699 standards-based implementations.
700 - Flow setups are now processed in a round-robin manner across ports
701 to prevent any single client from monopolizing the CPU and conducting
702 a denial of service attack.
703 - Added support for native VLAN tagging. A new "vlan_mode"
704 parameter can be set for "port". Possible values: "access",
705 "trunk", "native-tagged" and "native-untagged".
706 - test-openflowd has been removed. Please use ovs-vswitchd instead.
709 ------------------------
710 - New "ofproto" abstraction layer to ease porting to hardware
712 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
713 - Datapath support for Linux kernels up to 3.0.
715 - New "bundle" and "bundle_load" action extensions.
717 - Implement table unique constraints.
718 - Support cooperative locking between callers.
720 - New "-s" option for "show" command prints packet and byte
721 counters for each port.
723 - New "--readd" option for "replace-flows".
725 - New "show" command to print an overview of configuration.
726 - New "comment" command to add remark that explains intentions.
727 - ovs-brcompatd has been rewritten to fix long-standing bugs.
728 - ovs-openflowd has been renamed test-openflowd and moved into the
729 tests directory. Its presence confused too many users. Please
730 use ovs-vswitchd instead.
731 - New ovs-benchmark utility to test flow setup performance.
732 - A new log level "off" has been added. Configuring a log facility
733 "off" prevents any messages from being logged to it. Previously,
734 "emer" was effectively "off" because no messages were ever logged at
735 level "emer". Now, errors that cause a process to exit are logged
737 - "configure" option --with-l26 has been renamed --with-linux, and
738 --with-l26-source has been renamed --with-linux-source. The old
739 names will be removed after the next release, so please update
741 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
742 datapath/linux-2.6/compat-2.6 directories.
744 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
745 Please use the extensible match extensions instead.
746 - Removed the Maintenance_Point and Monitor tables in an effort
747 to simplify 802.1ag configuration.
748 - Performance and scalability improvements
752 ------------------------
753 - Ability to define policies over IPv6
756 - Support for extensible match extensions to OpenFlow
758 - Support for HFSC qdisc.
759 - Queue used by in-band control can now be configured.
761 - Kernel<->userspace interface has been reworked and should be
762 close to a stable ABI now.
763 - "Port group" concept has been dropped.
764 - GRE over IPSEC tunnels
766 - New active backup bonding mode.
767 - New L4 hashing support when LACP is enabled.
768 - Source MAC hash now includes VLAN field also.
770 - Greatly improved handling of large flow tables
772 - "show" command now prints full vport configuration.
773 - "dump-groups" command removed since kernel support for
774 port groups was dropped.
776 - New commands for working with the new Managers table.
777 - "list" command enhanced with new formatting options and --columns
779 - "get" command now accepts new --id option.
780 - New "find" command.
782 - New "queue-stats" command for printing queue stats.
783 - New commands "replace-flows" and "diff-flows".
784 - Commands to add and remove flows can now read from files.
785 - New --flow-format option to enable or disable NXM.
786 - New --more option to increase OpenFlow message verbosity.
787 - Removed "tun-cookie" command, which is no longer useful.
788 - ovs-controller enhancements for testing various features.
789 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
790 bugs. New ovs-vlan-bug-workaround command for enabling and
791 disabling a workaround for these driver bugs.
793 - "Resubmit" actions now update flow statistics.
794 - New "register" extension for use in matching and actions, via NXM.
795 - New "multipath" experimental action extension.
796 - New support for matching multicast Ethernet frames, via NXM.
797 - New extension for OpenFlow vendor error codes.
798 - New extension to set the QoS output queue without actually
799 sending to an output port.
800 - Open vSwitch now reports a single flow table, instead of
801 separate hash and wildcard tables. This better models the
802 current implementation.
803 - New experimental "note" action.
804 - New "ofproto/trace" ovs-appctl command and associated utilities
805 to ease debugging complex flow tables.
807 - Schema documentation now includes an entity-relationship diagram.
808 - The database is now garbage collected. In most tables,
809 unreferenced rows will be deleted automatically.
810 - Many tables now include statistics updated periodically by
811 ovs-vswitchd or ovsdb-server.
812 - Every table now has an "external-ids" column for use by OVS
814 - There is no default controller anymore. Each bridge must have its
815 controller individually specified.
816 - The "fail-mode" is now a property of a Bridge instead of a Controller.
817 - New versioning and checksum features.
818 - New Managers table and manager_options column in Open_vSwitch table
819 for specifying managers. The old "managers" column in the
820 Open_vSwitch table has been removed.
821 - Many "name" columns are now immutable.
823 - Dropped support for XenServer pre-5.6.100.
824 - Dropped support for Linux pre-2.6.18.
825 - Dropped controller discovery support.
826 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
827 Statistics reporting in the database is a rough equivalent.
828 - Dropped the "corekeeper" package (now separate, at
829 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
830 - Performance and scalability improvements
833 v1.1.0pre2 - 13 Sep 2010
834 ------------------------
837 v1.1.0pre1 - 31 Aug 2010
838 ------------------------
839 - OpenFlow 1.0 slicing (QoS) functionality
840 - Python bindings for configuration database (no write support)
841 - Performance and scalability improvements
846 - New "patch" interface type
851 - Configuration database with remote management
854 - Support for XenServer 5.5 and 5.6
855 - Performance and scalability improvements
858 v0.99.2 - 18 Feb 2010
859 ---------------------
862 v0.99.1 - 25 Jan 2010
863 ---------------------
864 - Add support for sFlow(R)
865 - Make headers compatible with C++
868 v0.99.0 - 14 Jan 2010
869 ---------------------
870 - User-space forwarding engine
873 v0.90.7 - 29 Nov 2009
874 ---------------------
875 - Add support for NetFlow active timeouts
882 v0.90.5 - 21 Sep 2009
883 ---------------------
884 - Generalize in-band control to more diverse network setups
projects / cascardo / ovs.git / blob