2 ------------------------
3 - FreeBSD is now a supported platform, thanks to code contributions from
4 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
5 - ovs-bugtool: New --ovs option to report only OVS related information.
6 - New %t and %T log escapes to identify the subprogram within a
7 cooperating group of processes or threads that emitted a log message.
8 The default log patterns now include this information.
10 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
11 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
13 - Commands and actions that accept port numbers now also accept keywords
14 that represent those ports (such as LOCAL, NONE, and ALL). This is
15 also the recommended way to specify these ports, for compatibility
16 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
17 for these ports for different purposes).
18 - Commands and actions that accept port numbers no longer accept port 0,
19 which is not a valid port number in OpenFlow 1.0 and later.
21 - Support requesting the port number with the "port_no" option in
23 - ovs-pki: The "online PKI" features have been removed, along with
24 the ovs-pki-cgi program that facilitated it, because of some
25 alarmist insecurity claims. We do not believe that these claims
26 are true, but because we do not know of any users for this
27 feature it seems better on balance to remove it. (The ovs-pki-cgi
28 program was not included in distribution packaging.)
29 - ovsdb-server now enforces the immutability of immutable columns. This
30 was not enforced in earlier versions due to an oversight.
31 - Stable bond mode is deprecated and will be removed no earlier than
32 February 2013. Please email dev@openvswitch.org with concerns.
33 - The autopath action is deprecated and will be removed no earlier than
34 February 2013. Please email dev@openvswitch.org with concerns.
35 - The null interface type is deprecated and will be removed no earlier
36 than February 2013. Please email dev@openvswitch.org with concerns.
40 ------------------------
41 - New FAQ. Please send updates and additions!
42 - Authors of controllers, please read the new section titled "Action
43 Reproduction" in DESIGN, which describes an Open vSwitch change in
44 behavior in corner cases that may affect some controllers.
46 - A new test utility that can create L3 tunnel between two Open
47 vSwitches and detect connectivity issues.
49 - New --sort and --rsort options for "dump-flows" command.
50 - "mod-port" command can now control all OpenFlow config flags.
52 - Allow general bitwise masking for IPv4 and IPv6 addresses in
53 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
55 - Allow support for arbitrary Ethernet masks. (Previously, only
56 the multicast bit in the destination address could be individually
58 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
59 - The OFPST_QUEUE request now reports an error if a specified port or
60 queue does not exist, or for requests for a specific queue on all
61 ports, if the specified queue does not exist on any port. (Previous
62 versions generally reported an empty set of results.)
63 - New "flow monitor" feature to allow controllers to be notified of
64 flow table changes as they happen.
65 - Additional protocols are not mirrored and dropped when forward-bpdu is
66 false. For a full list, see the ovs-vswitchd.conf.db man page.
67 - Open vSwitch now sends RARP packets in situations where it previously
68 sent a custom protocol, making it consistent with behavior of QEMU and
70 - All Open vSwitch programs and log files now show timestamps in UTC,
71 instead the local timezone, by default.
75 ------------------------
76 - kernel modules are renamed. openvswitch_mod.ko is now
77 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
78 - Increased the number of NXM registers to 8.
79 - Added ability to configure DSCP setting for manager and controller
80 connections. By default, these connections have a DSCP value of
81 Internetwork Control (0xc0).
82 - Added the granular link health statistics, 'cfm_health', to an
85 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
86 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
89 - Added the "dump-ports-desc" command to retrieve port
90 information using the new port description multipart messages.
92 - Added support for spawning ovs-test server from the client.
93 - Now ovs-test is able to automatically create test bridges and ports.
94 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
95 - Tripled flow setup performance.
96 - The "coverage/log" command previously available through ovs-appctl
97 has been replaced by "coverage/show". The new command replies with
98 coverage counter values, instead of logging them.
102 ------------------------
103 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
107 ------------------------
108 *** Internal only release ***
110 - LACP bonds no longer fall back to balance-slb when negotiations fail.
111 Instead they drop traffic.
112 - The default bond_mode changed from SLB to active-backup, to protect
113 unsuspecting users from the significant risks of SLB bonds (which are
114 documented in vswitchd/INTERNALS).
115 - Load balancing can be disabled by setting the bond-rebalance-interval
118 - Added support for bitwise matching on TCP and UDP ports.
119 See ovs-ofctl(8) for more information.
120 - NXM flow dumps now include times elapsed toward idle and hard
122 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
123 controllers more precise control over which OpenFlow messages they
124 receive asynchronously.
125 - New "fin_timeout" action.
126 - Added "fin_timeout" support to "learn" action.
127 - New Nicira action NXAST_CONTROLLER that offers additional features
128 over output to OFPP_CONTROLLER.
129 - When QoS settings for an interface do not configure a default queue
130 (queue 0), Open vSwitch now uses a default configuration for that
131 queue, instead of dropping all packets as in previous versions.
133 - Logging to console and file will have UTC timestamp as a default for
134 all the daemons. An example of the default format is
135 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
137 - The syntax of commands and options to set log levels was simplified,
138 to make it easier to remember.
139 - New support for limiting the number of flows in an OpenFlow flow
140 table, with configurable policy for evicting flows upon
141 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
142 for more information.
143 - New "enable-async-messages" column in the Controller table. If set to
144 false, OpenFlow connections to the controller will initially have all
145 asynchronous messages disabled, overriding normal OpenFlow behavior.
146 - ofproto-provider interface:
147 - "struct rule" has a new member "used" that ofproto implementations
148 should maintain by updating with ofproto_rule_update_used().
150 - The new option --timestamp causes the "monitor" command to print
151 a timestamp with every update.
152 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
156 ------------------------
158 - Added support for querying, modifying, and deleting flows
159 based on flow cookie when using NXM.
160 - Added new NXM_PACKET_IN format.
161 - Added new NXAST_DEC_TTL action.
163 - Added daemonization support to the monitor and snoop commands.
165 - The "find" command supports new set relational operators
166 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
167 - ovsdb-tool now uses the typical database and schema installation
168 directories as defaults.
169 - The default MAC learning timeout has been increased from 60 seconds
170 to 300 seconds. The MAC learning timeout is now configurable.
174 ------------------------
175 - Compatible with Open vSwitch kernel module included in Linux 3.3.
176 - New "VLAN splinters" feature to work around buggy device drivers
177 in old Linux versions. (This feature is deprecated. When
178 broken device drivers are no longer in widespread use, we will
179 delete this feature.) See ovs-vswitchd.conf.db(5) for more
182 - Added ability to match on IPv6 flow label through NXM.
183 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
184 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
185 - Added ability to modify ECN bits in IPv4.
186 - Added ability to modify TTL in IPv4.
188 - Don't require the "normal" action to use mirrors. Traffic will
189 now be properly mirrored for any flows, regardless of their
191 - Track packet and byte statistics sent on mirrors.
192 - The sFlow implementation can now usually infer the correct agent
193 device instead of having to be told explicitly.
195 - New "fdb/flush" command to flush bridge's MAC learning table.
197 - A new distributed testing tool that allows one to diagnose performance
198 and connectivity issues. This tool currently is not included in RH or
200 - RHEL packaging now supports integration with Red Hat network scripts.
202 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
203 to active-backup. SLB bonds carry significant risks with them
204 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
205 users from running into. Users are advised to update any scripts or
206 configuration which may be negatively impacted by explicitly setting
207 the bond mode which they want to use.
211 ------------------------
213 - Added an OpenFlow extension which allows the "output" action to accept
215 - Added an OpenFlow extension for flexible learning.
216 - Bumped number of NXM registers from four to five.
218 - New "version" command to determine version of running daemon.
219 - If no argument is provided for "cfm/show", displays detailed
220 information about all interfaces with CFM enabled.
221 - If no argument is provided for "lacp/show", displays detailed
222 information about all ports with LACP enabled.
224 - New "set-if" command to modify a datapath port's configuration.
226 - The software switch now supports 255 OpenFlow tables, instead
227 of just one. By default, only table 0 is consulted, but the
228 new NXAST_RESUBMIT_TABLE action can look up in additional
229 tables. Tables 128 and above are reserved for use by the
230 switch itself; please use only tables 0 through 127.
231 - Add support for 802.1D spanning tree (STP).
232 - Fragment handling extensions:
233 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
234 fields are made available for matching in fragments with
236 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
237 via "ip_frag" in ovs-ofctl).
238 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
239 fragment handling policy.
240 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
241 By default it remains compatible with the old version and other
242 standards-based implementations.
243 - Flow setups are now processed in a round-robin manner across ports
244 to prevent any single client from monopolizing the CPU and conducting
245 a denial of service attack.
246 - Added support for native VLAN tagging. A new "vlan_mode"
247 parameter can be set for "port". Possible values: "access",
248 "trunk", "native-tagged" and "native-untagged".
249 - test-openflowd has been removed. Please use ovs-vswitchd instead.
252 ------------------------
253 - New "ofproto" abstraction layer to ease porting to hardware
255 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
256 - Datapath support for Linux kernels up to 3.0.
258 - New "bundle" and "bundle_load" action extensions.
260 - Implement table unique constraints.
261 - Support cooperative locking between callers.
263 - New "-s" option for "show" command prints packet and byte
264 counters for each port.
266 - New "--readd" option for "replace-flows".
268 - New "show" command to print an overview of configuration.
269 - New "comment" command to add remark that explains intentions.
270 - ovs-brcompatd has been rewritten to fix long-standing bugs.
271 - ovs-openflowd has been renamed test-openflowd and moved into the
272 tests directory. Its presence confused too many users. Please
273 use ovs-vswitchd instead.
274 - New ovs-benchmark utility to test flow setup performance.
275 - A new log level "off" has been added. Configuring a log facility
276 "off" prevents any messages from being logged to it. Previously,
277 "emer" was effectively "off" because no messages were ever logged at
278 level "emer". Now, errors that cause a process to exit are logged
280 - "configure" option --with-l26 has been renamed --with-linux, and
281 --with-l26-source has been renamed --with-linux-source. The old
282 names will be removed after the next release, so please update
284 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
285 datapath/linux-2.6/compat-2.6 directories.
287 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
288 Please use the extensible match extensions instead.
289 - Removed the Maintenance_Point and Monitor tables in an effort
290 to simplify 802.1ag configuration.
291 - Performance and scalability improvements
295 ------------------------
296 - Ability to define policies over IPv6
299 - Support for extensible match extensions to OpenFlow
301 - Support for HFSC qdisc.
302 - Queue used by in-band control can now be configured.
304 - Kernel<->userspace interface has been reworked and should be
305 close to a stable ABI now.
306 - "Port group" concept has been dropped.
307 - GRE over IPSEC tunnels
309 - New active backup bonding mode.
310 - New L4 hashing support when LACP is enabled.
311 - Source MAC hash now includes VLAN field also.
313 - Greatly improved handling of large flow tables
315 - "show" command now prints full vport configuration.
316 - "dump-groups" command removed since kernel support for
317 port groups was dropped.
319 - New commands for working with the new Managers table.
320 - "list" command enhanced with new formatting options and --columns
322 - "get" command now accepts new --id option.
323 - New "find" command.
325 - New "queue-stats" command for printing queue stats.
326 - New commands "replace-flows" and "diff-flows".
327 - Commands to add and remove flows can now read from files.
328 - New --flow-format option to enable or disable NXM.
329 - New --more option to increase OpenFlow message verbosity.
330 - Removed "tun-cookie" command, which is no longer useful.
331 - ovs-controller enhancements for testing various features.
332 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
333 bugs. New ovs-vlan-bug-workaround command for enabling and
334 disabling a workaround for these driver bugs.
336 - "Resubmit" actions now update flow statistics.
337 - New "register" extension for use in matching and actions, via NXM.
338 - New "multipath" experimental action extension.
339 - New support for matching multicast Ethernet frames, via NXM.
340 - New extension for OpenFlow vendor error codes.
341 - New extension to set the QoS output queue without actually
342 sending to an output port.
343 - Open vSwitch now reports a single flow table, instead of
344 separate hash and wildcard tables. This better models the
345 current implementation.
346 - New experimental "note" action.
347 - New "ofproto/trace" ovs-appctl command and associated utilities
348 to ease debugging complex flow tables.
350 - Schema documentation now includes an entity-relationship diagram.
351 - The database is now garbage collected. In most tables,
352 unreferenced rows will be deleted automatically.
353 - Many tables now include statistics updated periodically by
354 ovs-vswitchd or ovsdb-server.
355 - Every table now has an "external-ids" column for use by OVS
357 - There is no default controller anymore. Each bridge must have its
358 controller individually specified.
359 - The "fail-mode" is now a property of a Bridge instead of a Controller.
360 - New versioning and checksum features.
361 - New Managers table and manager_options column in Open_vSwitch table
362 for specifying managers. The old "managers" column in the
363 Open_vSwitch table has been removed.
364 - Many "name" columns are now immutable.
366 - Dropped support for XenServer pre-5.6.100.
367 - Dropped support for Linux pre-2.6.18.
368 - Dropped controller discovery support.
369 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
370 Statistics reporting in the database is a rough equivalent.
371 - Dropped the "corekeeper" package (now separate, at
372 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
373 - Performance and scalability improvements
376 v1.1.0pre2 - 13 Sep 2010
377 ------------------------
380 v1.1.0pre1 - 31 Aug 2010
381 ------------------------
382 - OpenFlow 1.0 slicing (QoS) functionality
383 - Python bindings for configuration database (no write support)
384 - Performance and scalability improvements
389 - New "patch" interface type
394 - Configuration database with remote management
397 - Support for XenServer 5.5 and 5.6
398 - Performance and scalability improvements
401 v0.99.2 - 18 Feb 2010
402 ---------------------
405 v0.99.1 - 25 Jan 2010
406 ---------------------
407 - Add support for sFlow(R)
408 - Make headers compatible with C++
411 v0.99.0 - 14 Jan 2010
412 ---------------------
413 - User-space forwarding engine
416 v0.90.7 - 29 Nov 2009
417 ---------------------
418 - Add support for NetFlow active timeouts
425 v0.90.5 - 21 Sep 2009
426 ---------------------
427 - Generalize in-band control to more diverse network setups
projects / openvswitch / blob