7 - The tunneling code no longer assumes input and output keys are symmetric.
8 If they are not, PMTUD needs to be disabled for tunneling to work. Note
9 this only applies to flow-based keys.
11 - Support for ipv6 set action.
12 - SKB mark matching and setting.
13 - FreeBSD is now a supported platform, thanks to code contributions from
14 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
15 - ovs-bugtool: New --ovs option to report only OVS related information.
16 - New %t and %T log escapes to identify the subprogram within a
17 cooperating group of processes or threads that emitted a log message.
18 The default log patterns now include this information.
20 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
21 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
22 - Adds support for writing to the metadata field for a flow.
23 - It is possible to request the OpenFlow port number with the
24 "ofport_request" column in the Interface table.
26 - Commands and actions that accept port numbers now also accept keywords
27 that represent those ports (such as LOCAL, NONE, and ALL). This is
28 also the recommended way to specify these ports, for compatibility
29 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
30 for these ports for different purposes).
32 - Support requesting the port number with the "port_no" option in
34 - The "dump-flows" and "del-flows" no longer require an argument
35 if only one datapath exists.
37 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
38 that mimic the equivalent ovs-dpctl commands.
39 - ovs-pki: The "online PKI" features have been removed, along with
40 the ovs-pki-cgi program that facilitated it, because of some
41 alarmist insecurity claims. We do not believe that these claims
42 are true, but because we do not know of any users for this
43 feature it seems better on balance to remove it. (The ovs-pki-cgi
44 program was not included in distribution packaging.)
45 - Tunnel Path MTU Discovery default value was set to 'disabled'. This
46 feature is deprecated and will be removed soon.
47 - ovsdb-server now enforces the immutability of immutable columns. This
48 was not enforced in earlier versions due to an oversight.
49 - New support for a nonstandard form of GRE that supports a 64-bit key.
50 - The ofproto library is now responsible for assigning OpenFlow port
51 numbers. An ofproto implementation should assign them when
52 port_construct() is called.
53 - All dpif-based bridges of a particular type share a common
54 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
55 commands will now return information on that shared datapath. To
56 get the equivalent bridge-specific information, use the new
57 "ovs-appctl dpif/*" commands.
58 - Tunnel header caching removed.
59 - The following features are now deprecated. They will be removed no
60 earlier than February 2013. Please email dev@openvswitch.org with
63 - The autopath action.
64 - Interface type "null".
65 - Numeric values for reserved ports (see "ovs-ofctl" note above).
66 - Tunnel Path MTU Discovery.
67 - CAPWAP tunnel support.
68 - The data in the RARP packets can now be matched in the same way as the
72 ------------------------
73 - New FAQ. Please send updates and additions!
74 - Authors of controllers, please read the new section titled "Action
75 Reproduction" in DESIGN, which describes an Open vSwitch change in
76 behavior in corner cases that may affect some controllers.
78 - A new test utility that can create L3 tunnel between two Open
79 vSwitches and detect connectivity issues.
81 - New --sort and --rsort options for "dump-flows" command.
82 - "mod-port" command can now control all OpenFlow config flags.
84 - Allow general bitwise masking for IPv4 and IPv6 addresses in
85 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
87 - Allow support for arbitrary Ethernet masks. (Previously, only
88 the multicast bit in the destination address could be individually
90 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
91 - The OFPST_QUEUE request now reports an error if a specified port or
92 queue does not exist, or for requests for a specific queue on all
93 ports, if the specified queue does not exist on any port. (Previous
94 versions generally reported an empty set of results.)
95 - New "flow monitor" feature to allow controllers to be notified of
96 flow table changes as they happen.
97 - Additional protocols are not mirrored and dropped when forward-bpdu is
98 false. For a full list, see the ovs-vswitchd.conf.db man page.
99 - Open vSwitch now sends RARP packets in situations where it previously
100 sent a custom protocol, making it consistent with behavior of QEMU and
102 - All Open vSwitch programs and log files now show timestamps in UTC,
103 instead the local timezone, by default.
107 ------------------------
108 - kernel modules are renamed. openvswitch_mod.ko is now
109 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
110 - Increased the number of NXM registers to 8.
111 - Added ability to configure DSCP setting for manager and controller
112 connections. By default, these connections have a DSCP value of
113 Internetwork Control (0xc0).
114 - Added the granular link health statistics, 'cfm_health', to an
117 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
118 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
121 - Added the "dump-ports-desc" command to retrieve port
122 information using the new port description multipart messages.
124 - Added support for spawning ovs-test server from the client.
125 - Now ovs-test is able to automatically create test bridges and ports.
126 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
127 - Tripled flow setup performance.
128 - The "coverage/log" command previously available through ovs-appctl
129 has been replaced by "coverage/show". The new command replies with
130 coverage counter values, instead of logging them.
134 ------------------------
135 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
139 ------------------------
140 *** Internal only release ***
142 - LACP bonds no longer fall back to balance-slb when negotiations fail.
143 Instead they drop traffic.
144 - The default bond_mode changed from SLB to active-backup, to protect
145 unsuspecting users from the significant risks of SLB bonds (which are
146 documented in vswitchd/INTERNALS).
147 - Load balancing can be disabled by setting the bond-rebalance-interval
150 - Added support for bitwise matching on TCP and UDP ports.
151 See ovs-ofctl(8) for more information.
152 - NXM flow dumps now include times elapsed toward idle and hard
154 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
155 controllers more precise control over which OpenFlow messages they
156 receive asynchronously.
157 - New "fin_timeout" action.
158 - Added "fin_timeout" support to "learn" action.
159 - New Nicira action NXAST_CONTROLLER that offers additional features
160 over output to OFPP_CONTROLLER.
161 - When QoS settings for an interface do not configure a default queue
162 (queue 0), Open vSwitch now uses a default configuration for that
163 queue, instead of dropping all packets as in previous versions.
165 - Logging to console and file will have UTC timestamp as a default for
166 all the daemons. An example of the default format is
167 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
169 - The syntax of commands and options to set log levels was simplified,
170 to make it easier to remember.
171 - New support for limiting the number of flows in an OpenFlow flow
172 table, with configurable policy for evicting flows upon
173 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
174 for more information.
175 - New "enable-async-messages" column in the Controller table. If set to
176 false, OpenFlow connections to the controller will initially have all
177 asynchronous messages disabled, overriding normal OpenFlow behavior.
178 - ofproto-provider interface:
179 - "struct rule" has a new member "used" that ofproto implementations
180 should maintain by updating with ofproto_rule_update_used().
182 - The new option --timestamp causes the "monitor" command to print
183 a timestamp with every update.
184 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
188 ------------------------
190 - Added support for querying, modifying, and deleting flows
191 based on flow cookie when using NXM.
192 - Added new NXM_PACKET_IN format.
193 - Added new NXAST_DEC_TTL action.
195 - Added daemonization support to the monitor and snoop commands.
197 - The "find" command supports new set relational operators
198 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
199 - ovsdb-tool now uses the typical database and schema installation
200 directories as defaults.
201 - The default MAC learning timeout has been increased from 60 seconds
202 to 300 seconds. The MAC learning timeout is now configurable.
206 ------------------------
207 - Compatible with Open vSwitch kernel module included in Linux 3.3.
208 - New "VLAN splinters" feature to work around buggy device drivers
209 in old Linux versions. (This feature is deprecated. When
210 broken device drivers are no longer in widespread use, we will
211 delete this feature.) See ovs-vswitchd.conf.db(5) for more
214 - Added ability to match on IPv6 flow label through NXM.
215 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
216 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
217 - Added ability to modify ECN bits in IPv4.
218 - Added ability to modify TTL in IPv4.
220 - Don't require the "normal" action to use mirrors. Traffic will
221 now be properly mirrored for any flows, regardless of their
223 - Track packet and byte statistics sent on mirrors.
224 - The sFlow implementation can now usually infer the correct agent
225 device instead of having to be told explicitly.
227 - New "fdb/flush" command to flush bridge's MAC learning table.
229 - A new distributed testing tool that allows one to diagnose performance
230 and connectivity issues. This tool currently is not included in RH or
232 - RHEL packaging now supports integration with Red Hat network scripts.
234 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
235 to active-backup. SLB bonds carry significant risks with them
236 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
237 users from running into. Users are advised to update any scripts or
238 configuration which may be negatively impacted by explicitly setting
239 the bond mode which they want to use.
243 ------------------------
245 - Added an OpenFlow extension which allows the "output" action to accept
247 - Added an OpenFlow extension for flexible learning.
248 - Bumped number of NXM registers from four to five.
250 - New "version" command to determine version of running daemon.
251 - If no argument is provided for "cfm/show", displays detailed
252 information about all interfaces with CFM enabled.
253 - If no argument is provided for "lacp/show", displays detailed
254 information about all ports with LACP enabled.
256 - New "set-if" command to modify a datapath port's configuration.
258 - The software switch now supports 255 OpenFlow tables, instead
259 of just one. By default, only table 0 is consulted, but the
260 new NXAST_RESUBMIT_TABLE action can look up in additional
261 tables. Tables 128 and above are reserved for use by the
262 switch itself; please use only tables 0 through 127.
263 - Add support for 802.1D spanning tree (STP).
264 - Fragment handling extensions:
265 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
266 fields are made available for matching in fragments with
268 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
269 via "ip_frag" in ovs-ofctl).
270 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
271 fragment handling policy.
272 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
273 By default it remains compatible with the old version and other
274 standards-based implementations.
275 - Flow setups are now processed in a round-robin manner across ports
276 to prevent any single client from monopolizing the CPU and conducting
277 a denial of service attack.
278 - Added support for native VLAN tagging. A new "vlan_mode"
279 parameter can be set for "port". Possible values: "access",
280 "trunk", "native-tagged" and "native-untagged".
281 - test-openflowd has been removed. Please use ovs-vswitchd instead.
284 ------------------------
285 - New "ofproto" abstraction layer to ease porting to hardware
287 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
288 - Datapath support for Linux kernels up to 3.0.
290 - New "bundle" and "bundle_load" action extensions.
292 - Implement table unique constraints.
293 - Support cooperative locking between callers.
295 - New "-s" option for "show" command prints packet and byte
296 counters for each port.
298 - New "--readd" option for "replace-flows".
300 - New "show" command to print an overview of configuration.
301 - New "comment" command to add remark that explains intentions.
302 - ovs-brcompatd has been rewritten to fix long-standing bugs.
303 - ovs-openflowd has been renamed test-openflowd and moved into the
304 tests directory. Its presence confused too many users. Please
305 use ovs-vswitchd instead.
306 - New ovs-benchmark utility to test flow setup performance.
307 - A new log level "off" has been added. Configuring a log facility
308 "off" prevents any messages from being logged to it. Previously,
309 "emer" was effectively "off" because no messages were ever logged at
310 level "emer". Now, errors that cause a process to exit are logged
312 - "configure" option --with-l26 has been renamed --with-linux, and
313 --with-l26-source has been renamed --with-linux-source. The old
314 names will be removed after the next release, so please update
316 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
317 datapath/linux-2.6/compat-2.6 directories.
319 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
320 Please use the extensible match extensions instead.
321 - Removed the Maintenance_Point and Monitor tables in an effort
322 to simplify 802.1ag configuration.
323 - Performance and scalability improvements
327 ------------------------
328 - Ability to define policies over IPv6
331 - Support for extensible match extensions to OpenFlow
333 - Support for HFSC qdisc.
334 - Queue used by in-band control can now be configured.
336 - Kernel<->userspace interface has been reworked and should be
337 close to a stable ABI now.
338 - "Port group" concept has been dropped.
339 - GRE over IPSEC tunnels
341 - New active backup bonding mode.
342 - New L4 hashing support when LACP is enabled.
343 - Source MAC hash now includes VLAN field also.
345 - Greatly improved handling of large flow tables
347 - "show" command now prints full vport configuration.
348 - "dump-groups" command removed since kernel support for
349 port groups was dropped.
351 - New commands for working with the new Managers table.
352 - "list" command enhanced with new formatting options and --columns
354 - "get" command now accepts new --id option.
355 - New "find" command.
357 - New "queue-stats" command for printing queue stats.
358 - New commands "replace-flows" and "diff-flows".
359 - Commands to add and remove flows can now read from files.
360 - New --flow-format option to enable or disable NXM.
361 - New --more option to increase OpenFlow message verbosity.
362 - Removed "tun-cookie" command, which is no longer useful.
363 - ovs-controller enhancements for testing various features.
364 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
365 bugs. New ovs-vlan-bug-workaround command for enabling and
366 disabling a workaround for these driver bugs.
368 - "Resubmit" actions now update flow statistics.
369 - New "register" extension for use in matching and actions, via NXM.
370 - New "multipath" experimental action extension.
371 - New support for matching multicast Ethernet frames, via NXM.
372 - New extension for OpenFlow vendor error codes.
373 - New extension to set the QoS output queue without actually
374 sending to an output port.
375 - Open vSwitch now reports a single flow table, instead of
376 separate hash and wildcard tables. This better models the
377 current implementation.
378 - New experimental "note" action.
379 - New "ofproto/trace" ovs-appctl command and associated utilities
380 to ease debugging complex flow tables.
382 - Schema documentation now includes an entity-relationship diagram.
383 - The database is now garbage collected. In most tables,
384 unreferenced rows will be deleted automatically.
385 - Many tables now include statistics updated periodically by
386 ovs-vswitchd or ovsdb-server.
387 - Every table now has an "external-ids" column for use by OVS
389 - There is no default controller anymore. Each bridge must have its
390 controller individually specified.
391 - The "fail-mode" is now a property of a Bridge instead of a Controller.
392 - New versioning and checksum features.
393 - New Managers table and manager_options column in Open_vSwitch table
394 for specifying managers. The old "managers" column in the
395 Open_vSwitch table has been removed.
396 - Many "name" columns are now immutable.
398 - Dropped support for XenServer pre-5.6.100.
399 - Dropped support for Linux pre-2.6.18.
400 - Dropped controller discovery support.
401 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
402 Statistics reporting in the database is a rough equivalent.
403 - Dropped the "corekeeper" package (now separate, at
404 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
405 - Performance and scalability improvements
408 v1.1.0pre2 - 13 Sep 2010
409 ------------------------
412 v1.1.0pre1 - 31 Aug 2010
413 ------------------------
414 - OpenFlow 1.0 slicing (QoS) functionality
415 - Python bindings for configuration database (no write support)
416 - Performance and scalability improvements
421 - New "patch" interface type
426 - Configuration database with remote management
429 - Support for XenServer 5.5 and 5.6
430 - Performance and scalability improvements
433 v0.99.2 - 18 Feb 2010
434 ---------------------
437 v0.99.1 - 25 Jan 2010
438 ---------------------
439 - Add support for sFlow(R)
440 - Make headers compatible with C++
443 v0.99.0 - 14 Jan 2010
444 ---------------------
445 - User-space forwarding engine
448 v0.90.7 - 29 Nov 2009
449 ---------------------
450 - Add support for NetFlow active timeouts
457 v0.90.5 - 21 Sep 2009
458 ---------------------
459 - Generalize in-band control to more diverse network setups
projects / openvswitch / blob