7 - Dropped support for Python older than version 2.7. As a consequence,
8 using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
9 have Python 2.4) requires first installing Python 2.7.
11 * Group chaining (where one OpenFlow group triggers another) is
13 * OpenFlow 1.4+ "importance" is now considered for flow eviction.
14 * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
15 * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
16 * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
17 * Allow modifying the ICMPv4/ICMPv6 type and code fields.
19 * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
20 - Support for matching/generating options as well as the OAM bit with
22 - Support Multicast Listener Discovery (MLDv1 and MLDv2).
23 - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
24 - sFlow agent now reports tunnel and MPLS structures.
25 - Added OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG
26 that allows controllers to have more precise control over OpenFlow1.4
27 asynchronous messages.
28 - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
29 targets to run a new system testsuite. These tests can be run inside
30 a Vagrant box. See INSTALL.md for details
31 - Dropped support for GRE64 tunnel.
32 - Mark --syslog-target argument as deprecated. It will be removed in
34 - Added --user option to all daemons
35 - Add support for connection tracking through the new "ct" action
36 and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
37 available on Linux kernels with the connection tracking module loaded.
38 - Add experimental version of OVN. OVN, the Open Virtual Network, is a
39 system to support virtual network abstraction. OVN complements the
40 existing capabilities of OVS to add native support for virtual network
41 abstractions, such as virtual L2 and L3 overlays and security groups.
46 - Flow table modifications are now atomic, meaning that each packet
47 now sees a coherent version of the OpenFlow pipeline. For
48 example, if a controller removes all flows with a single OpenFlow
49 "flow_mod", no packet sees an intermediate version of the OpenFlow
50 pipeline where only some of the flows have been deleted.
51 - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
52 - Add bash command-line completion support for ovs-vsctl Please check
53 utilities/ovs-command-compgen.INSTALL.md for how to use.
54 - The MAC learning feature now includes per-port fairness to mitigate
56 - New support for a "conjunctive match" OpenFlow extension, which
57 allows constructing OpenFlow matches of the form "field1 in
58 {a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
59 see documentation for the "conjunction" action in ovs-ofctl(8).
60 - Add bash command-line completion support for ovs-appctl/ovs-dpctl/
61 ovs-ofctl/ovsdb-tool commands. Please check
62 utilities/ovs-command-compgen.INSTALL.md for how to use.
63 - The "learn" action supports a new flag "delete_learned" that causes
64 the learned flows to be deleted when the flow with the "learn" action
66 - Basic support for the Geneve tunneling protocol. It is not yet
67 possible to generate or match options. This is planned for a future
68 release. The protocol is documented at
69 http://tools.ietf.org/html/draft-gross-geneve-00
70 - The OVS database now reports controller rate limiting statistics.
71 - sflow now exports information about LACP-based bonds, port names, and
72 OpenFlow port numbers, as well as datapath performance counters.
73 - ovs-dpctl functionality is now available for datapaths integrated
74 into ovs-vswitchd, via ovs-appctl. Some existing ovs-appctl
75 commands are now redundant and will be removed in a future
76 release. See ovs-vswitchd(8) for details.
78 * OpenFlow 1.4 bundles are now supported for flow mods and port
79 mods. For flow mods, both 'atomic' and 'ordered' bundle flags
80 are trivially supported, as all bundled messages are executed
81 in the order they were added and all flow table modifications
82 are now atomic to the datapath. Port mods may not appear in
83 atomic bundles, as port status modifications are not atomic.
84 * IPv6 flow label and neighbor discovery fields are now modifiable.
85 * OpenFlow 1.5 extended registers are now supported.
86 * The OpenFlow 1.5 actset_output field is now supported.
87 * OpenFlow 1.5 Copy-Field action is now supported.
88 * OpenFlow 1.5 masked Set-Field action is now supported.
89 * OpenFlow 1.3+ table features requests are now supported (read-only).
90 * Nicira extension "move" actions may now be included in action sets.
91 * "resubmit" actions may now be included in action sets. The resubmit
92 is executed last, and only if the action set has no "output" or "group"
94 * OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
95 * A new Netronome extension to OpenFlow 1.5+ allows control over the
96 fields hashed for OpenFlow select groups. See "selection_method" and
97 related options in ovs-ofctl(8) for details.
98 - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
99 ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
100 use an OpenFlow 1.4 bundle to operate the modifications as a single
101 atomic transaction. If any of the flow mods in a transaction fail, none
102 of them are executed. All flow mods in a bundle appear to datapath
103 lookups simultaneously.
104 - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
105 mods as an input by allowing the flow specification to start with an
106 explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
107 keyword. A missing keyword is treated as 'add', so this is fully
108 backwards compatible. With the new '--bundle' option all the flow mods
109 are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
110 - ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
111 MD5 is no longer secure and some operating systems have started to disable
113 - ovsdb-server: New OVSDB protocol extension allows inequality tests on
114 "optional scalar" columns. See ovsdb-server(1) for details.
115 - ovs-vsctl now permits immutable columns in a new row to be modified in
116 the same transaction that creates the row.
117 - test-controller has been renamed ovs-testcontroller at request of users
118 who find it useful for testing basic OpenFlow setups. It is still not
119 a necessary or desirable part of most Open vSwitch deployments.
120 - Support for travis-ci.org based continuous integration builds has been
121 added. Build failures are reported to build@openvswitch.org. See INSTALL.md
122 file for additional details.
123 - Support for the Rapid Spanning Tree Protocol (IEEE 802.1D-2004).
124 The implementation has been tested successfully against the Ixia Automated
125 Network Validation Library (ANVL).
126 - Stats are no longer updated on fake bond interface.
127 - Keep active bond slave selection across OVS restart.
128 - A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
129 containers. If and when there is a native integration of Open vSwitch
130 with Docker, the wrapper script will be retired.
131 - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
132 protocols. This is generic tunneling mechanism for userspace datapath.
133 - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
134 - Support for Linux kernels up to 4.0.x
135 - The documentation now use the term 'destination' to mean one of syslog,
136 console or file for vlog logging instead of the previously used term
138 - Support for VXLAN Group Policy extension
139 - Initial support for the IETF Auto-Attach SPBM draft standard. This
140 contains rudimentary support for the LLDP protocol as needed for
142 - The default OpenFlow and OVSDB ports are now the IANA-assigned
143 numbers. OpenFlow is 6653 and OVSDB is 6640.
144 - Support for DPDK vHost.
145 - Support for outer UDP checksums in Geneve and VXLAN.
146 - The kernel vports with dependencies are no longer part of the overall
147 openvswitch.ko but built and loaded automatically as individual kernel
148 modules (vport-*.ko).
149 - Support for STT tunneling.
150 - ovs-sim: New developer tool for simulating multiple OVS instances.
151 See ovs-sim(1) for more information.
152 - Support to configure method (--syslog-method argument) that determines
153 how daemons will talk with syslog.
154 - Support for "ovs-appctl vlog/list-pattern" command that lets to query
155 logging message format for each destination.
159 ---------------------
160 - OpenFlow 1.1, 1.2, and 1.3 are now enabled by default in
162 - Linux kernel datapath now has an exact match cache optimizing the
163 flow matching process.
164 - Datapath flows now have partially wildcarded tranport port field
165 matches. This reduces userspace upcalls, but increases the
166 number of different masks in the datapath. The kernel datapath
167 exact match cache removes the overhead of matching the incoming
168 packets with the larger number of masks, but when paired with an
169 older kernel module, some workloads may perform worse with the
171 - Compatibility with autoconf 2.63 (previously >=2.64)
173 v2.2.0 - Internal Release
174 ---------------------
175 - Internal ports are no longer brought up by default, because it
176 should be an administrator task to bring up devices as they are
178 - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
180 - Port creation and configuration errors are now stored in a new error
181 column of the Interface table and included in 'ovs-vsctl show'.
182 - The "ovsdbmonitor" graphical tool has been removed, because it was
183 poorly maintained and not widely used.
184 - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
185 controllers against Open vSwitch. See INSTALL.md for details.
186 - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
187 - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
188 log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
190 - Support for Linux kernels up to 3.14. From Kernel 3.12 onwards OVS uses
191 tunnel API for GRE and VXLAN.
192 - Added DPDK support.
193 - Added support for custom vlog patterns in Python
197 ---------------------
198 - Address prefix tracking support for flow tables. New columns
199 "prefixes" in OVS-DB table "Flow_Table" controls which packet
200 header fields are used for address prefix tracking. Prefix
201 tracking allows the classifier to skip rules with longer than
202 necessary prefixes, resulting in better wildcarding for datapath
203 flows. Default configuration is to not use any fields for prefix
204 tracking. However, if any flow tables contain both exact matches
205 and masked matches for IP address fields, OVS performance may be
206 increased by using this feature.
207 * As of now, the fields for which prefix lookup can be enabled
208 are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
209 aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
210 (Using this feature for 'tun_id' would only make sense if the
211 tunnel IDs have prefix structure similar to IP addresses.)
212 * There is a maximum number of fields that can be enabled for any
213 one flow table. Currently this limit is 3.
215 $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
216 --id=@N1 create Flow_Table name=table0
217 $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
218 --id=@N1 create Flow_Table name=table1
219 $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
220 $ ovs-vsctl set Flow_Table table1 prefixes=[]
221 - TCP flags matching: OVS now supports matching of TCP flags. This
222 has an adverse performance impact when using OVS userspace 1.10
223 or older (no megaflows support) together with the new OVS kernel
224 module. It is recommended that the kernel and userspace modules
225 both are upgraded at the same time.
226 - The default OpenFlow and OVSDB ports will change to
227 IANA-assigned numbers in a future release. Consider updating
228 your installations to specify port numbers instead of using the
231 * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
232 * OVS limits the OpenFlow port numbers it assigns to port 32767 and
233 below, leaving port numbers above that range free for assignment
235 * ovs-vswitchd now honors changes to the "ofport_request" column
236 in the Interface table by changing the port's OpenFlow port
238 * The Open vSwitch software switch now supports OpenFlow groups.
239 - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
240 diagram only if graphviz package was installed at the build time.
241 - Support for Linux kernels up to 3.11
243 The "show" command also displays mega flow mask stats.
245 * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
246 - ovs-controller has been renamed test-controller. It is no longer
247 packaged or installed by default, because too many users assumed
248 incorrectly that ovs-controller was a necessary or desirable part
249 of an Open vSwitch deployment.
250 - Added vlog option to export to a UDP syslog sink.
252 * The "monitor" command can now monitor all tables in a database,
253 instead of being limited to a single table.
254 - The flow-eviction-threshold has been replaced by the flow-limit which is a
255 hard limit on the number of flows in the datapath. It defaults to 200,000
256 flows. OVS automatically adjusts this number depending on network
258 - Added IPv6 support for active and passive socket communications.
262 ---------------------
263 - The ovs-vswitchd process is no longer single-threaded. Multiple
264 threads are now used to handle flow set up and asynchronous
267 * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
268 1.3, which had experimental support in 1.10).
269 * Experimental protocol support for OpenFlow 1.1+ groups. This
270 does not yet include an implementation in the Open vSwitch
272 * Experimental protocol support for OpenFlow 1.2+ meters. This
273 does not yet include an implementation in the Open vSwitch
275 * New support for matching outer source and destination IP address
276 of tunneled packets, for tunnel ports configured with the newly
277 added "remote_ip=flow" and "local_ip=flow" options.
278 * Support for matching on metadata 'pkt_mark' for interacting with
279 other system components. On Linux this corresponds to the skb
281 * Support matching, rewriting SCTP ports
282 - The Interface table in the database has a new "ifindex" column to
283 report the interface's OS-assigned ifindex.
284 - New "check-oftest" Makefile target for running OFTest against Open
285 vSwitch. See README-OFTest for details.
286 - The flow eviction threshold has been moved to the Open_vSwitch table.
287 - Database names are now mandatory when specifying ovsdb-server options
288 through database paths (e.g. Private key option with the database name
289 should look like "--private-key=db:Open_vSwitch,SSL,private_key").
290 - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
291 - Support for Linux kernels up to 3.10
293 * New "ofp-parse" for printing OpenFlow messages read from a file.
294 * New commands for OpenFlow 1.1+ groups.
295 - Added configurable flow caching support to IPFIX exporter.
296 - Dropped support for Linux pre-2.6.32.
297 - Log file timestamps and ovsdb commit timestamps are now reported
298 with millisecond resolution. (Previous versions only reported
302 v1.11.0 - 28 Aug 2013
303 ---------------------
304 - Support for megaflows, which allows wildcarding in the kernel (and
305 any dpif implementation that supports wildcards). Depending on
306 the flow table and switch configuration, flow set up rates are
307 close to the Linux bridge.
308 - The "tutorial" directory contains a new tutorial for some advanced
309 Open vSwitch features.
310 - Stable bond mode has been removed.
311 - The autopath action has been removed.
312 - New support for the data encapsulation format of the LISP tunnel
313 protocol (RFC 6830). An external control plane or manual flow
314 setup is required for EID-to-RLOC mapping.
316 * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
317 1.1 and later are now implemented.
318 * New "stack" extension for use in actions, to push and pop from
320 * The "load" and "set_field" actions can now modify the "in_port". (This
321 allows one to enable output to a flow's input port by setting the
322 in_port to some unused value, such as OFPP_NONE.)
324 * New debugging commands "add-flow", "mod-flow", "del-flow".
325 * "dump-flows" now has a -m option to increase output verbosity.
326 - In dpif-based bridges, cache action translations, which can improve
327 flow set up performance by 80% with a complicated flow table.
328 - New syslog format, prefixed with "ovs|", to be easier to filter.
329 - RHEL: Removes the default firewall rule that allowed GRE traffic to
330 pass through. Any users that relied on this automatic firewall hole
331 will have to manually configure it. The ovs-ctl(8) manpage documents
332 the "enable-protocol" command that can be used as an alternative.
333 - New CFM demand mode which uses data traffic to indicate interface
336 v1.10.0 - 01 May 2013
337 ---------------------
338 - Bridge compatibility support has been removed. Any uses that
339 rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
340 or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
342 - The maximum size of the MAC learning table is now configurable.
343 - With the Linux datapath, packets for new flows are now queued
344 separately on a per-port basis, so it should no longer be
345 possible for a large number of new flows arriving on one port to
346 prevent new flows from being processed on other ports.
348 * Previously ovs-vsctl would retry connecting to the database forever,
349 causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
350 only tries once by default (use --retry to try forever). This change
351 means that you may want to remove uses of --timeout to avoid hangs
353 * Many "ovs-vsctl" database commands now accept an --if-exists option.
354 Please refer to the ovs-vsctl manpage for details.
356 - Experimental support for newer versions of OpenFlow. See
357 the "What versions of OpenFlow does Open vSwitch support?"
358 question in the FAQ for more details.
359 - The OpenFlow "dp_desc" may now be configured by setting the
360 value of other-config:dp-desc in the Bridge table.
361 - It is possible to request the OpenFlow port number with the
362 "ofport_request" column in the Interface table.
363 - The NXM flow_removed message now reports the OpenFlow table ID
364 from which the flow was removed.
366 - New support for the VXLAN tunnel protocol (see the IETF draft here:
367 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
368 - Tunneling requires the version of the kernel module paired with
369 Open vSwitch 1.9.0 or later.
370 - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
371 is no longer supported.
372 - Path MTU discovery is no longer supported.
373 - CAPWAP tunneling support removed.
374 - Tunnels with multicast destination ports are no longer supported.
376 - The "dump-flows" and "del-flows" no longer require an argument
377 if only one datapath exists.
379 - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
380 commands available allow control over logging rate limits.
381 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
382 that mimic the equivalent ovs-dpctl commands.
383 - The ofproto library is now responsible for assigning OpenFlow port
384 numbers. An ofproto implementation should assign them when
385 port_construct() is called.
386 - All dpif-based bridges of a particular type share a common
387 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
388 commands will now return information on that shared datapath. To
389 get the equivalent bridge-specific information, use the new
390 "ovs-appctl dpif/*" commands.
391 - Backward-incompatible changes:
392 - Earlier Open vSwitch versions treated ANY as a wildcard in flow
393 syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
394 conflict. ANY was rarely used in flow syntax, so we chose to
395 retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
396 - Patch ports no longer require kernel support, so they now work
397 with FreeBSD and the kernel module built into Linux 3.3 and later.
398 - New "sample" action.
402 ------------------------
404 - Support for ipv6 set action.
405 - SKB mark matching and setting.
406 - support for Linux kernels up to 3.8
407 - FreeBSD is now a supported platform, thanks to code contributions from
408 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
409 - ovs-bugtool: New --ovs option to report only OVS related information.
410 - New %t and %T log escapes to identify the subprogram within a
411 cooperating group of processes or threads that emitted a log message.
412 The default log patterns now include this information.
414 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
415 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
416 - Adds support for writing to the metadata field for a flow.
418 - The tunneling code no longer assumes input and output keys are
419 symmetric. If they are not, PMTUD needs to be disabled for
420 tunneling to work. Note this only applies to flow-based keys.
421 - New support for a nonstandard form of GRE that supports a 64-bit key.
422 - Tunnel Path MTU Discovery default value was set to 'disabled'.
423 This feature is deprecated and will be removed soon.
424 - Tunnel header caching removed.
426 - Commands and actions that accept port numbers now also accept keywords
427 that represent those ports (such as LOCAL, NONE, and ALL). This is
428 also the recommended way to specify these ports, for compatibility
429 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
430 for these ports for different purposes).
432 - Support requesting the port number with the "port_no" option in
433 the "add-if" command.
434 - ovs-pki: The "online PKI" features have been removed, along with
435 the ovs-pki-cgi program that facilitated it, because of some
436 alarmist insecurity claims. We do not believe that these claims
437 are true, but because we do not know of any users for this
438 feature it seems better on balance to remove it. (The ovs-pki-cgi
439 program was not included in distribution packaging.)
440 - ovsdb-server now enforces the immutability of immutable columns. This
441 was not enforced in earlier versions due to an oversight.
442 - The following features are now deprecated. They will be removed no
443 earlier than February 2013. Please email dev@openvswitch.org with
445 - Bridge compatibility.
447 - The autopath action.
448 - Interface type "null".
449 - Numeric values for reserved ports (see "ovs-ofctl" note above).
450 - Tunnel Path MTU Discovery.
451 - CAPWAP tunnel support.
452 - The data in the RARP packets can now be matched in the same way as the
457 ------------------------
458 *** Internal only release ***
459 - New FAQ. Please send updates and additions!
460 - Authors of controllers, please read the new section titled "Action
461 Reproduction" in DESIGN, which describes an Open vSwitch change in
462 behavior in corner cases that may affect some controllers.
464 - A new test utility that can create L3 tunnel between two Open
465 vSwitches and detect connectivity issues.
467 - New --sort and --rsort options for "dump-flows" command.
468 - "mod-port" command can now control all OpenFlow config flags.
470 - Allow general bitwise masking for IPv4 and IPv6 addresses in
471 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
473 - Allow support for arbitrary Ethernet masks. (Previously, only
474 the multicast bit in the destination address could be individually
476 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
477 - The OFPST_QUEUE request now reports an error if a specified port or
478 queue does not exist, or for requests for a specific queue on all
479 ports, if the specified queue does not exist on any port. (Previous
480 versions generally reported an empty set of results.)
481 - New "flow monitor" feature to allow controllers to be notified of
482 flow table changes as they happen.
483 - Additional protocols are not mirrored and dropped when forward-bpdu is
484 false. For a full list, see the ovs-vswitchd.conf.db man page.
485 - Open vSwitch now sends RARP packets in situations where it previously
486 sent a custom protocol, making it consistent with behavior of QEMU and
488 - All Open vSwitch programs and log files now show timestamps in UTC,
489 instead the local timezone, by default.
493 ------------------------
494 - kernel modules are renamed. openvswitch_mod.ko is now
495 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
496 - Increased the number of NXM registers to 8.
497 - Added ability to configure DSCP setting for manager and controller
498 connections. By default, these connections have a DSCP value of
499 Internetwork Control (0xc0).
500 - Added the granular link health statistics, 'cfm_health', to an
503 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
504 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
507 - Added the "dump-ports-desc" command to retrieve port
508 information using the new port description multipart messages.
510 - Added support for spawning ovs-test server from the client.
511 - Now ovs-test is able to automatically create test bridges and ports.
512 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
513 - Tripled flow setup performance.
514 - The "coverage/log" command previously available through ovs-appctl
515 has been replaced by "coverage/show". The new command replies with
516 coverage counter values, instead of logging them.
520 ------------------------
521 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
525 ------------------------
526 *** Internal only release ***
528 - LACP bonds no longer fall back to balance-slb when negotiations fail.
529 Instead they drop traffic.
530 - The default bond_mode changed from SLB to active-backup, to protect
531 unsuspecting users from the significant risks of SLB bonds (which are
532 documented in vswitchd/INTERNALS).
533 - Load balancing can be disabled by setting the bond-rebalance-interval
536 - Added support for bitwise matching on TCP and UDP ports.
537 See ovs-ofctl(8) for more information.
538 - NXM flow dumps now include times elapsed toward idle and hard
540 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
541 controllers more precise control over which OpenFlow messages they
542 receive asynchronously.
543 - New "fin_timeout" action.
544 - Added "fin_timeout" support to "learn" action.
545 - New Nicira action NXAST_CONTROLLER that offers additional features
546 over output to OFPP_CONTROLLER.
547 - When QoS settings for an interface do not configure a default queue
548 (queue 0), Open vSwitch now uses a default configuration for that
549 queue, instead of dropping all packets as in previous versions.
551 - Logging to console and file will have UTC timestamp as a default for
552 all the daemons. An example of the default format is
553 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
555 - The syntax of commands and options to set log levels was simplified,
556 to make it easier to remember.
557 - New support for limiting the number of flows in an OpenFlow flow
558 table, with configurable policy for evicting flows upon
559 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
560 for more information.
561 - New "enable-async-messages" column in the Controller table. If set to
562 false, OpenFlow connections to the controller will initially have all
563 asynchronous messages disabled, overriding normal OpenFlow behavior.
564 - ofproto-provider interface:
565 - "struct rule" has a new member "used" that ofproto implementations
566 should maintain by updating with ofproto_rule_update_used().
568 - The new option --timestamp causes the "monitor" command to print
569 a timestamp with every update.
570 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
574 ------------------------
576 - Added support for querying, modifying, and deleting flows
577 based on flow cookie when using NXM.
578 - Added new NXM_PACKET_IN format.
579 - Added new NXAST_DEC_TTL action.
581 - Added daemonization support to the monitor and snoop commands.
583 - The "find" command supports new set relational operators
584 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
585 - ovsdb-tool now uses the typical database and schema installation
586 directories as defaults.
587 - The default MAC learning timeout has been increased from 60 seconds
588 to 300 seconds. The MAC learning timeout is now configurable.
592 ------------------------
593 - Compatible with Open vSwitch kernel module included in Linux 3.3.
594 - New "VLAN splinters" feature to work around buggy device drivers
595 in old Linux versions. (This feature is deprecated. When
596 broken device drivers are no longer in widespread use, we will
597 delete this feature.) See ovs-vswitchd.conf.db(5) for more
600 - Added ability to match on IPv6 flow label through NXM.
601 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
602 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
603 - Added ability to modify ECN bits in IPv4.
604 - Added ability to modify TTL in IPv4.
606 - Don't require the "normal" action to use mirrors. Traffic will
607 now be properly mirrored for any flows, regardless of their
609 - Track packet and byte statistics sent on mirrors.
610 - The sFlow implementation can now usually infer the correct agent
611 device instead of having to be told explicitly.
613 - New "fdb/flush" command to flush bridge's MAC learning table.
615 - A new distributed testing tool that allows one to diagnose performance
616 and connectivity issues. This tool currently is not included in RH or
618 - RHEL packaging now supports integration with Red Hat network scripts.
620 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
621 to active-backup. SLB bonds carry significant risks with them
622 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
623 users from running into. Users are advised to update any scripts or
624 configuration which may be negatively impacted by explicitly setting
625 the bond mode which they want to use.
629 ------------------------
631 - Added an OpenFlow extension which allows the "output" action to accept
633 - Added an OpenFlow extension for flexible learning.
634 - Bumped number of NXM registers from four to five.
636 - New "version" command to determine version of running daemon.
637 - If no argument is provided for "cfm/show", displays detailed
638 information about all interfaces with CFM enabled.
639 - If no argument is provided for "lacp/show", displays detailed
640 information about all ports with LACP enabled.
642 - New "set-if" command to modify a datapath port's configuration.
644 - The software switch now supports 255 OpenFlow tables, instead
645 of just one. By default, only table 0 is consulted, but the
646 new NXAST_RESUBMIT_TABLE action can look up in additional
647 tables. Tables 128 and above are reserved for use by the
648 switch itself; please use only tables 0 through 127.
649 - Add support for 802.1D spanning tree (STP).
650 - Fragment handling extensions:
651 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
652 fields are made available for matching in fragments with
654 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
655 via "ip_frag" in ovs-ofctl).
656 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
657 fragment handling policy.
658 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
659 By default it remains compatible with the old version and other
660 standards-based implementations.
661 - Flow setups are now processed in a round-robin manner across ports
662 to prevent any single client from monopolizing the CPU and conducting
663 a denial of service attack.
664 - Added support for native VLAN tagging. A new "vlan_mode"
665 parameter can be set for "port". Possible values: "access",
666 "trunk", "native-tagged" and "native-untagged".
667 - test-openflowd has been removed. Please use ovs-vswitchd instead.
670 ------------------------
671 - New "ofproto" abstraction layer to ease porting to hardware
673 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
674 - Datapath support for Linux kernels up to 3.0.
676 - New "bundle" and "bundle_load" action extensions.
678 - Implement table unique constraints.
679 - Support cooperative locking between callers.
681 - New "-s" option for "show" command prints packet and byte
682 counters for each port.
684 - New "--readd" option for "replace-flows".
686 - New "show" command to print an overview of configuration.
687 - New "comment" command to add remark that explains intentions.
688 - ovs-brcompatd has been rewritten to fix long-standing bugs.
689 - ovs-openflowd has been renamed test-openflowd and moved into the
690 tests directory. Its presence confused too many users. Please
691 use ovs-vswitchd instead.
692 - New ovs-benchmark utility to test flow setup performance.
693 - A new log level "off" has been added. Configuring a log facility
694 "off" prevents any messages from being logged to it. Previously,
695 "emer" was effectively "off" because no messages were ever logged at
696 level "emer". Now, errors that cause a process to exit are logged
698 - "configure" option --with-l26 has been renamed --with-linux, and
699 --with-l26-source has been renamed --with-linux-source. The old
700 names will be removed after the next release, so please update
702 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
703 datapath/linux-2.6/compat-2.6 directories.
705 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
706 Please use the extensible match extensions instead.
707 - Removed the Maintenance_Point and Monitor tables in an effort
708 to simplify 802.1ag configuration.
709 - Performance and scalability improvements
713 ------------------------
714 - Ability to define policies over IPv6
717 - Support for extensible match extensions to OpenFlow
719 - Support for HFSC qdisc.
720 - Queue used by in-band control can now be configured.
722 - Kernel<->userspace interface has been reworked and should be
723 close to a stable ABI now.
724 - "Port group" concept has been dropped.
725 - GRE over IPSEC tunnels
727 - New active backup bonding mode.
728 - New L4 hashing support when LACP is enabled.
729 - Source MAC hash now includes VLAN field also.
731 - Greatly improved handling of large flow tables
733 - "show" command now prints full vport configuration.
734 - "dump-groups" command removed since kernel support for
735 port groups was dropped.
737 - New commands for working with the new Managers table.
738 - "list" command enhanced with new formatting options and --columns
740 - "get" command now accepts new --id option.
741 - New "find" command.
743 - New "queue-stats" command for printing queue stats.
744 - New commands "replace-flows" and "diff-flows".
745 - Commands to add and remove flows can now read from files.
746 - New --flow-format option to enable or disable NXM.
747 - New --more option to increase OpenFlow message verbosity.
748 - Removed "tun-cookie" command, which is no longer useful.
749 - ovs-controller enhancements for testing various features.
750 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
751 bugs. New ovs-vlan-bug-workaround command for enabling and
752 disabling a workaround for these driver bugs.
754 - "Resubmit" actions now update flow statistics.
755 - New "register" extension for use in matching and actions, via NXM.
756 - New "multipath" experimental action extension.
757 - New support for matching multicast Ethernet frames, via NXM.
758 - New extension for OpenFlow vendor error codes.
759 - New extension to set the QoS output queue without actually
760 sending to an output port.
761 - Open vSwitch now reports a single flow table, instead of
762 separate hash and wildcard tables. This better models the
763 current implementation.
764 - New experimental "note" action.
765 - New "ofproto/trace" ovs-appctl command and associated utilities
766 to ease debugging complex flow tables.
768 - Schema documentation now includes an entity-relationship diagram.
769 - The database is now garbage collected. In most tables,
770 unreferenced rows will be deleted automatically.
771 - Many tables now include statistics updated periodically by
772 ovs-vswitchd or ovsdb-server.
773 - Every table now has an "external-ids" column for use by OVS
775 - There is no default controller anymore. Each bridge must have its
776 controller individually specified.
777 - The "fail-mode" is now a property of a Bridge instead of a Controller.
778 - New versioning and checksum features.
779 - New Managers table and manager_options column in Open_vSwitch table
780 for specifying managers. The old "managers" column in the
781 Open_vSwitch table has been removed.
782 - Many "name" columns are now immutable.
784 - Dropped support for XenServer pre-5.6.100.
785 - Dropped support for Linux pre-2.6.18.
786 - Dropped controller discovery support.
787 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
788 Statistics reporting in the database is a rough equivalent.
789 - Dropped the "corekeeper" package (now separate, at
790 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
791 - Performance and scalability improvements
794 v1.1.0pre2 - 13 Sep 2010
795 ------------------------
798 v1.1.0pre1 - 31 Aug 2010
799 ------------------------
800 - OpenFlow 1.0 slicing (QoS) functionality
801 - Python bindings for configuration database (no write support)
802 - Performance and scalability improvements
807 - New "patch" interface type
812 - Configuration database with remote management
815 - Support for XenServer 5.5 and 5.6
816 - Performance and scalability improvements
819 v0.99.2 - 18 Feb 2010
820 ---------------------
823 v0.99.1 - 25 Jan 2010
824 ---------------------
825 - Add support for sFlow(R)
826 - Make headers compatible with C++
829 v0.99.0 - 14 Jan 2010
830 ---------------------
831 - User-space forwarding engine
834 v0.90.7 - 29 Nov 2009
835 ---------------------
836 - Add support for NetFlow active timeouts
843 v0.90.5 - 21 Sep 2009
844 ---------------------
845 - Generalize in-band control to more diverse network setups
projects / cascardo / ovs.git / blob