2 ------------------------
3 - New FAQ. Please send updates and additions!
5 - "mod-port" command can now control all OpenFlow config flags.
6 - Added support for arbitrary ethernet masks
7 - Additional protocols are not mirrored and dropped when forward-bpdu is
8 false. For a full list, see the ovs-vswitchd.conf.db man page.
9 - Open vSwitch now sends RARP packets in situations where it previously
10 sent a custom protocol, making it consistent with behavior of QEMU and
15 ------------------------
16 - kernel modules are renamed. openvswitch_mod.ko is now
17 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
18 - Increased the number of NXM registers to 8.
19 - Added ability to configure dscp setting for manager and controller
20 connections. By default, these connections have a DSCP value of
21 Internetwork Control (0xc0).
22 - Added the granular link health statistics, 'cfm_health', to an
25 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
26 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
29 - Added the "dump-ports-desc" command to retrieve port
30 information using the new port description multipart messages.
32 - Added support for spawning ovs-test server from the client.
33 - Now ovs-test is able to automatically create test bridges and ports.
34 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
35 - The "coverage/log" command previously available through ovs-appctl
36 has been replaced by "coverage/show". The new command replies with
37 coverage counter values, instead of logging them.
41 ------------------------
43 - LACP bonds no longer fall back to balance-slb when negotiations fail.
44 Instead they drop traffic.
45 - The default bond_mode changed from SLB to active-backup, to protect
46 unsuspecting users from the significant risks of SLB bonds (which are
47 documented in vswitchd/INTERNALS).
48 - Load balancing can be disabled by setting the bond-rebalance-interval
51 - Added support for bitwise matching on TCP and UDP ports.
52 See ovs-ofctl(8) for more information.
53 - NXM flow dumps now include times elapsed toward idle and hard
55 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
56 controllers more precise control over which OpenFlow messages they
57 receive asynchronously.
58 - New "fin_timeout" action.
59 - Added "fin_timeout" support to "learn" action.
60 - New Nicira action NXAST_CONTROLLER that offers additional features
61 over output to OFPP_CONTROLLER.
62 - When QoS settings for an interface do not configure a default queue
63 (queue 0), Open vSwitch now uses a default configuration for that
64 queue, instead of dropping all packets as in previous versions.
66 - Logging to console and file will have UTC timestamp as a default for
67 all the daemons. An example of the default format is
68 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
70 - The syntax of commands and options to set log levels was simplified,
71 to make it easier to remember.
72 - New support for limiting the number of flows in an OpenFlow flow
73 table, with configurable policy for evicting flows upon
74 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
76 - New "enable-async-messages" column in the Controller table. If set to
77 false, OpenFlow connections to the controller will initially have all
78 asynchronous messages disabled, overriding normal OpenFlow behavior.
79 - ofproto-provider interface:
80 - "struct rule" has a new member "used" that ofproto implementations
81 should maintain by updating with ofproto_rule_update_used().
83 - The new option --timestamp causes the "monitor" command to print
84 a timestamp with every update.
85 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
89 ------------------------
91 - Added support for querying, modifying, and deleting flows
92 based on flow cookie when using NXM.
93 - Added new NXM_PACKET_IN format.
94 - Added new NXAST_DEC_TTL action.
96 - Added daemonization support to the monitor and snoop commands.
98 - The "find" command supports new set relational operators
99 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
100 - ovsdb-tool now uses the typical database and schema installation
101 directories as defaults.
102 - The default MAC learning timeout has been increased from 60 seconds
103 to 300 seconds. The MAC learning timeout is now configurable.
107 ------------------------
108 - Compatible with Open vSwitch kernel module included in Linux 3.3.
109 - New "VLAN splinters" feature to work around buggy device drivers
110 in old Linux versions. (This feature is deprecated. When
111 broken device drivers are no longer in widespread use, we will
112 delete this feature.) See ovs-vswitchd.conf.db(5) for more
115 - Added ability to match on IPv6 flow label through NXM.
116 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
117 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
118 - Added ability to modify ECN bits in IPv4.
119 - Added ability to modify TTL in IPv4.
121 - Don't require the "normal" action to use mirrors. Traffic will
122 now be properly mirrored for any flows, regardless of their
124 - Track packet and byte statistics sent on mirrors.
125 - The sFlow implementation can now usually infer the correct agent
126 device instead of having to be told explicitly.
128 - New "fdb/flush" command to flush bridge's MAC learning table.
130 - A new distributed testing tool that allows one to diagnose performance
131 and connectivity issues. This tool currently is not included in RH or
133 - RHEL packaging now supports integration with Red Hat network scripts.
135 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
136 to active-backup. SLB bonds carry significant risks with them
137 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
138 users from running into. Users are advised to update any scripts or
139 configuration which may be negatively impacted by explicitly setting
140 the bond mode which they want to use.
144 ------------------------
146 - Added an OpenFlow extension which allows the "output" action to accept
148 - Added an OpenFlow extension for flexible learning.
149 - Bumped number of NXM registers from four to five.
151 - New "version" command to determine version of running daemon.
152 - If no argument is provided for "cfm/show", displays detailed
153 information about all interfaces with CFM enabled.
154 - If no argument is provided for "lacp/show", displays detailed
155 information about all ports with LACP enabled.
157 - New "set-if" command to modify a datapath port's configuration.
159 - The software switch now supports 255 OpenFlow tables, instead
160 of just one. By default, only table 0 is consulted, but the
161 new NXAST_RESUBMIT_TABLE action can look up in additional
162 tables. Tables 128 and above are reserved for use by the
163 switch itself; please use only tables 0 through 127.
164 - Add support for 802.1D spanning tree (STP).
165 - Fragment handling extensions:
166 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
167 fields are made available for matching in fragments with
169 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
170 via "ip_frag" in ovs-ofctl).
171 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
172 fragment handling policy.
173 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
174 By default it remains compatible with the old version and other
175 standards-based implementations.
176 - Flow setups are now processed in a round-robin manner across ports
177 to prevent any single client from monopolizing the CPU and conducting
178 a denial of service attack.
179 - Added support for native VLAN tagging. A new "vlan_mode"
180 parameter can be set for "port". Possible values: "access",
181 "trunk", "native-tagged" and "native-untagged".
182 - test-openflowd has been removed. Please use ovs-vswitchd instead.
185 ------------------------
186 - New "ofproto" abstraction layer to ease porting to hardware
188 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
189 - Datapath support for Linux kernels up to 3.0.
191 - New "bundle" and "bundle_load" action extensions.
193 - Implement table unique constraints.
194 - Support cooperative locking between callers.
196 - New "-s" option for "show" command prints packet and byte
197 counters for each port.
199 - New "--readd" option for "replace-flows".
201 - New "show" command to print an overview of configuration.
202 - New "comment" command to add remark that explains intentions.
203 - ovs-brcompatd has been rewritten to fix long-standing bugs.
204 - ovs-openflowd has been renamed test-openflowd and moved into the
205 tests directory. Its presence confused too many users. Please
206 use ovs-vswitchd instead.
207 - New ovs-benchmark utility to test flow setup performance.
208 - A new log level "off" has been added. Configuring a log facility
209 "off" prevents any messages from being logged to it. Previously,
210 "emer" was effectively "off" because no messages were ever logged at
211 level "emer". Now, errors that cause a process to exit are logged
213 - "configure" option --with-l26 has been renamed --with-linux, and
214 --with-l26-source has been renamed --with-linux-source. The old
215 names will be removed after the next release, so please update
217 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
218 datapath/linux-2.6/compat-2.6 directories.
220 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
221 Please use the extensible match extensions instead.
222 - Removed the Maintenance_Point and Monitor tables in an effort
223 to simplify 802.1ag configuration.
224 - Performance and scalability improvements
228 ------------------------
229 - Ability to define policies over IPv6
232 - Support for extensible match extensions to OpenFlow
234 - Support for HFSC qdisc.
235 - Queue used by in-band control can now be configured.
237 - Kernel<->userspace interface has been reworked and should be
238 close to a stable ABI now.
239 - "Port group" concept has been dropped.
240 - GRE over IPSEC tunnels
242 - New active backup bonding mode.
243 - New L4 hashing support when LACP is enabled.
244 - Source MAC hash now includes VLAN field also.
246 - Greatly improved handling of large flow tables
248 - "show" command now prints full vport configuration.
249 - "dump-groups" command removed since kernel support for
250 port groups was dropped.
252 - New commands for working with the new Managers table.
253 - "list" command enhanced with new formatting options and --columns
255 - "get" command now accepts new --id option.
256 - New "find" command.
258 - New "queue-stats" command for printing queue stats.
259 - New commands "replace-flows" and "diff-flows".
260 - Commands to add and remove flows can now read from files.
261 - New --flow-format option to enable or disable NXM.
262 - New --more option to increase OpenFlow message verbosity.
263 - Removed "tun-cookie" command, which is no longer useful.
264 - ovs-controller enhancements for testing various features.
265 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
266 bugs. New ovs-vlan-bug-workaround command for enabling and
267 disabling a workaround for these driver bugs.
269 - "Resubmit" actions now update flow statistics.
270 - New "register" extension for use in matching and actions, via NXM.
271 - New "multipath" experimental action extension.
272 - New support for matching multicast Ethernet frames, via NXM.
273 - New extension for OpenFlow vendor error codes.
274 - New extension to set the QoS output queue without actually
275 sending to an output port.
276 - Open vSwitch now reports a single flow table, instead of
277 separate hash and wildcard tables. This better models the
278 current implementation.
279 - New experimental "note" action.
280 - New "ofproto/trace" ovs-appctl command and associated utilities
281 to ease debugging complex flow tables.
283 - Schema documentation now includes an entity-relationship diagram.
284 - The database is now garbage collected. In most tables,
285 unreferenced rows will be deleted automatically.
286 - Many tables now include statistics updated periodically by
287 ovs-vswitchd or ovsdb-server.
288 - Every table now has an "external-ids" column for use by OVS
290 - There is no default controller anymore. Each bridge must have its
291 controller individually specified.
292 - The "fail-mode" is now a property of a Bridge instead of a Controller.
293 - New versioning and checksum features.
294 - New Managers table and manager_options column in Open_vSwitch table
295 for specifying managers. The old "managers" column in the
296 Open_vSwitch table has been removed.
297 - Many "name" columns are now immutable.
299 - Dropped support for XenServer pre-5.6.100.
300 - Dropped support for Linux pre-2.6.18.
301 - Dropped controller discovery support.
302 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
303 Statistics reporting in the database is a rough equivalent.
304 - Dropped the "corekeeper" package (now separate, at
305 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
306 - Performance and scalability improvements
309 v1.1.0pre2 - 13 Sep 2010
310 ------------------------
313 v1.1.0pre1 - 31 Aug 2010
314 ------------------------
315 - OpenFlow 1.0 slicing (QoS) functionality
316 - Python bindings for configuration database (no write support)
317 - Performance and scalability improvements
322 - New "patch" interface type
327 - Configuration database with remote management
330 - Support for XenServer 5.5 and 5.6
331 - Performance and scalability improvements
334 v0.99.2 - 18 Feb 2010
335 ---------------------
338 v0.99.1 - 25 Jan 2010
339 ---------------------
340 - Add support for sFlow(R)
341 - Make headers compatible with C++
344 v0.99.0 - 14 Jan 2010
345 ---------------------
346 - User-space forwarding engine
349 v0.90.7 - 29 Nov 2009
350 ---------------------
351 - Add support for NetFlow active timeouts
358 v0.90.5 - 21 Sep 2009
359 ---------------------
360 - Generalize in-band control to more diverse network setups