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 - Support requesting the port number with the "port_no" option in
15 - ovs-pki: The "online PKI" features have been removed, along with
16 the ovs-pki-cgi program that facilitated it, because of some
17 alarmist insecurity claims. We do not believe that these claims
18 are true, but because we do not know of any users for this
19 feature it seems better on balance to remove it. (The ovs-pki-cgi
20 program was not included in distribution packaging.)
21 - ovsdb-server now enforces the immutability of immutable columns. This
22 was not enforced in earlier versions due to an oversight.
23 - Stable bond mode is deprecated and will be removed no earlier than
24 February 2013. Please email dev@openvswitch.org with concerns.
25 - The autopath action is deprecated and will be removed no earlier than
26 February 2013. Please email dev@openvswitch.org with concerns.
27 - The null interface type is deprecated and will be removed no earlier
28 than February 2013. Please email dev@openvswitch.org with concerns.
32 ------------------------
33 - New FAQ. Please send updates and additions!
34 - Authors of controllers, please read the new section titled "Action
35 Reproduction" in DESIGN, which describes an Open vSwitch change in
36 behavior in corner cases that may affect some controllers.
38 - A new test utility that can create L3 tunnel between two Open
39 vSwitches and detect connectivity issues.
41 - New --sort and --rsort options for "dump-flows" command.
42 - "mod-port" command can now control all OpenFlow config flags.
44 - Allow general bitwise masking for IPv4 and IPv6 addresses in
45 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
47 - Allow support for arbitrary Ethernet masks. (Previously, only
48 the multicast bit in the destination address could be individually
50 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
51 - The OFPST_QUEUE request now reports an error if a specified port or
52 queue does not exist, or for requests for a specific queue on all
53 ports, if the specified queue does not exist on any port. (Previous
54 versions generally reported an empty set of results.)
55 - New "flow monitor" feature to allow controllers to be notified of
56 flow table changes as they happen.
57 - Additional protocols are not mirrored and dropped when forward-bpdu is
58 false. For a full list, see the ovs-vswitchd.conf.db man page.
59 - Open vSwitch now sends RARP packets in situations where it previously
60 sent a custom protocol, making it consistent with behavior of QEMU and
62 - All Open vSwitch programs and log files now show timestamps in UTC,
63 instead the local timezone, by default.
67 ------------------------
68 - kernel modules are renamed. openvswitch_mod.ko is now
69 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
70 - Increased the number of NXM registers to 8.
71 - Added ability to configure DSCP setting for manager and controller
72 connections. By default, these connections have a DSCP value of
73 Internetwork Control (0xc0).
74 - Added the granular link health statistics, 'cfm_health', to an
77 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
78 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
81 - Added the "dump-ports-desc" command to retrieve port
82 information using the new port description multipart messages.
84 - Added support for spawning ovs-test server from the client.
85 - Now ovs-test is able to automatically create test bridges and ports.
86 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
87 - Tripled flow setup performance.
88 - The "coverage/log" command previously available through ovs-appctl
89 has been replaced by "coverage/show". The new command replies with
90 coverage counter values, instead of logging them.
94 ------------------------
95 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
99 ------------------------
100 *** Internal only release ***
102 - LACP bonds no longer fall back to balance-slb when negotiations fail.
103 Instead they drop traffic.
104 - The default bond_mode changed from SLB to active-backup, to protect
105 unsuspecting users from the significant risks of SLB bonds (which are
106 documented in vswitchd/INTERNALS).
107 - Load balancing can be disabled by setting the bond-rebalance-interval
110 - Added support for bitwise matching on TCP and UDP ports.
111 See ovs-ofctl(8) for more information.
112 - NXM flow dumps now include times elapsed toward idle and hard
114 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
115 controllers more precise control over which OpenFlow messages they
116 receive asynchronously.
117 - New "fin_timeout" action.
118 - Added "fin_timeout" support to "learn" action.
119 - New Nicira action NXAST_CONTROLLER that offers additional features
120 over output to OFPP_CONTROLLER.
121 - When QoS settings for an interface do not configure a default queue
122 (queue 0), Open vSwitch now uses a default configuration for that
123 queue, instead of dropping all packets as in previous versions.
125 - Logging to console and file will have UTC timestamp as a default for
126 all the daemons. An example of the default format is
127 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
129 - The syntax of commands and options to set log levels was simplified,
130 to make it easier to remember.
131 - New support for limiting the number of flows in an OpenFlow flow
132 table, with configurable policy for evicting flows upon
133 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
134 for more information.
135 - New "enable-async-messages" column in the Controller table. If set to
136 false, OpenFlow connections to the controller will initially have all
137 asynchronous messages disabled, overriding normal OpenFlow behavior.
138 - ofproto-provider interface:
139 - "struct rule" has a new member "used" that ofproto implementations
140 should maintain by updating with ofproto_rule_update_used().
142 - The new option --timestamp causes the "monitor" command to print
143 a timestamp with every update.
144 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
148 ------------------------
150 - Added support for querying, modifying, and deleting flows
151 based on flow cookie when using NXM.
152 - Added new NXM_PACKET_IN format.
153 - Added new NXAST_DEC_TTL action.
155 - Added daemonization support to the monitor and snoop commands.
157 - The "find" command supports new set relational operators
158 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
159 - ovsdb-tool now uses the typical database and schema installation
160 directories as defaults.
161 - The default MAC learning timeout has been increased from 60 seconds
162 to 300 seconds. The MAC learning timeout is now configurable.
166 ------------------------
167 - Compatible with Open vSwitch kernel module included in Linux 3.3.
168 - New "VLAN splinters" feature to work around buggy device drivers
169 in old Linux versions. (This feature is deprecated. When
170 broken device drivers are no longer in widespread use, we will
171 delete this feature.) See ovs-vswitchd.conf.db(5) for more
174 - Added ability to match on IPv6 flow label through NXM.
175 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
176 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
177 - Added ability to modify ECN bits in IPv4.
178 - Added ability to modify TTL in IPv4.
180 - Don't require the "normal" action to use mirrors. Traffic will
181 now be properly mirrored for any flows, regardless of their
183 - Track packet and byte statistics sent on mirrors.
184 - The sFlow implementation can now usually infer the correct agent
185 device instead of having to be told explicitly.
187 - New "fdb/flush" command to flush bridge's MAC learning table.
189 - A new distributed testing tool that allows one to diagnose performance
190 and connectivity issues. This tool currently is not included in RH or
192 - RHEL packaging now supports integration with Red Hat network scripts.
194 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
195 to active-backup. SLB bonds carry significant risks with them
196 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
197 users from running into. Users are advised to update any scripts or
198 configuration which may be negatively impacted by explicitly setting
199 the bond mode which they want to use.
203 ------------------------
205 - Added an OpenFlow extension which allows the "output" action to accept
207 - Added an OpenFlow extension for flexible learning.
208 - Bumped number of NXM registers from four to five.
210 - New "version" command to determine version of running daemon.
211 - If no argument is provided for "cfm/show", displays detailed
212 information about all interfaces with CFM enabled.
213 - If no argument is provided for "lacp/show", displays detailed
214 information about all ports with LACP enabled.
216 - New "set-if" command to modify a datapath port's configuration.
218 - The software switch now supports 255 OpenFlow tables, instead
219 of just one. By default, only table 0 is consulted, but the
220 new NXAST_RESUBMIT_TABLE action can look up in additional
221 tables. Tables 128 and above are reserved for use by the
222 switch itself; please use only tables 0 through 127.
223 - Add support for 802.1D spanning tree (STP).
224 - Fragment handling extensions:
225 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
226 fields are made available for matching in fragments with
228 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
229 via "ip_frag" in ovs-ofctl).
230 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
231 fragment handling policy.
232 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
233 By default it remains compatible with the old version and other
234 standards-based implementations.
235 - Flow setups are now processed in a round-robin manner across ports
236 to prevent any single client from monopolizing the CPU and conducting
237 a denial of service attack.
238 - Added support for native VLAN tagging. A new "vlan_mode"
239 parameter can be set for "port". Possible values: "access",
240 "trunk", "native-tagged" and "native-untagged".
241 - test-openflowd has been removed. Please use ovs-vswitchd instead.
244 ------------------------
245 - New "ofproto" abstraction layer to ease porting to hardware
247 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
248 - Datapath support for Linux kernels up to 3.0.
250 - New "bundle" and "bundle_load" action extensions.
252 - Implement table unique constraints.
253 - Support cooperative locking between callers.
255 - New "-s" option for "show" command prints packet and byte
256 counters for each port.
258 - New "--readd" option for "replace-flows".
260 - New "show" command to print an overview of configuration.
261 - New "comment" command to add remark that explains intentions.
262 - ovs-brcompatd has been rewritten to fix long-standing bugs.
263 - ovs-openflowd has been renamed test-openflowd and moved into the
264 tests directory. Its presence confused too many users. Please
265 use ovs-vswitchd instead.
266 - New ovs-benchmark utility to test flow setup performance.
267 - A new log level "off" has been added. Configuring a log facility
268 "off" prevents any messages from being logged to it. Previously,
269 "emer" was effectively "off" because no messages were ever logged at
270 level "emer". Now, errors that cause a process to exit are logged
272 - "configure" option --with-l26 has been renamed --with-linux, and
273 --with-l26-source has been renamed --with-linux-source. The old
274 names will be removed after the next release, so please update
276 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
277 datapath/linux-2.6/compat-2.6 directories.
279 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
280 Please use the extensible match extensions instead.
281 - Removed the Maintenance_Point and Monitor tables in an effort
282 to simplify 802.1ag configuration.
283 - Performance and scalability improvements
287 ------------------------
288 - Ability to define policies over IPv6
291 - Support for extensible match extensions to OpenFlow
293 - Support for HFSC qdisc.
294 - Queue used by in-band control can now be configured.
296 - Kernel<->userspace interface has been reworked and should be
297 close to a stable ABI now.
298 - "Port group" concept has been dropped.
299 - GRE over IPSEC tunnels
301 - New active backup bonding mode.
302 - New L4 hashing support when LACP is enabled.
303 - Source MAC hash now includes VLAN field also.
305 - Greatly improved handling of large flow tables
307 - "show" command now prints full vport configuration.
308 - "dump-groups" command removed since kernel support for
309 port groups was dropped.
311 - New commands for working with the new Managers table.
312 - "list" command enhanced with new formatting options and --columns
314 - "get" command now accepts new --id option.
315 - New "find" command.
317 - New "queue-stats" command for printing queue stats.
318 - New commands "replace-flows" and "diff-flows".
319 - Commands to add and remove flows can now read from files.
320 - New --flow-format option to enable or disable NXM.
321 - New --more option to increase OpenFlow message verbosity.
322 - Removed "tun-cookie" command, which is no longer useful.
323 - ovs-controller enhancements for testing various features.
324 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
325 bugs. New ovs-vlan-bug-workaround command for enabling and
326 disabling a workaround for these driver bugs.
328 - "Resubmit" actions now update flow statistics.
329 - New "register" extension for use in matching and actions, via NXM.
330 - New "multipath" experimental action extension.
331 - New support for matching multicast Ethernet frames, via NXM.
332 - New extension for OpenFlow vendor error codes.
333 - New extension to set the QoS output queue without actually
334 sending to an output port.
335 - Open vSwitch now reports a single flow table, instead of
336 separate hash and wildcard tables. This better models the
337 current implementation.
338 - New experimental "note" action.
339 - New "ofproto/trace" ovs-appctl command and associated utilities
340 to ease debugging complex flow tables.
342 - Schema documentation now includes an entity-relationship diagram.
343 - The database is now garbage collected. In most tables,
344 unreferenced rows will be deleted automatically.
345 - Many tables now include statistics updated periodically by
346 ovs-vswitchd or ovsdb-server.
347 - Every table now has an "external-ids" column for use by OVS
349 - There is no default controller anymore. Each bridge must have its
350 controller individually specified.
351 - The "fail-mode" is now a property of a Bridge instead of a Controller.
352 - New versioning and checksum features.
353 - New Managers table and manager_options column in Open_vSwitch table
354 for specifying managers. The old "managers" column in the
355 Open_vSwitch table has been removed.
356 - Many "name" columns are now immutable.
358 - Dropped support for XenServer pre-5.6.100.
359 - Dropped support for Linux pre-2.6.18.
360 - Dropped controller discovery support.
361 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
362 Statistics reporting in the database is a rough equivalent.
363 - Dropped the "corekeeper" package (now separate, at
364 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
365 - Performance and scalability improvements
368 v1.1.0pre2 - 13 Sep 2010
369 ------------------------
372 v1.1.0pre1 - 31 Aug 2010
373 ------------------------
374 - OpenFlow 1.0 slicing (QoS) functionality
375 - Python bindings for configuration database (no write support)
376 - Performance and scalability improvements
381 - New "patch" interface type
386 - Configuration database with remote management
389 - Support for XenServer 5.5 and 5.6
390 - Performance and scalability improvements
393 v0.99.2 - 18 Feb 2010
394 ---------------------
397 v0.99.1 - 25 Jan 2010
398 ---------------------
399 - Add support for sFlow(R)
400 - Make headers compatible with C++
403 v0.99.0 - 14 Jan 2010
404 ---------------------
405 - User-space forwarding engine
408 v0.90.7 - 29 Nov 2009
409 ---------------------
410 - Add support for NetFlow active timeouts
417 v0.90.5 - 21 Sep 2009
418 ---------------------
419 - Generalize in-band control to more diverse network setups