2 ------------------------
3 - New FAQ. Please send updates and additions!
5 - "mod-port" command can now control all OpenFlow config flags.
7 - Allow general bitwise masking for IPv4 and IPv6 addresses in
8 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
10 - Allow support for arbitrary Ethernet masks. (Previously, only
11 the multicast bit in the destination address could be individually
13 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
14 - Additional protocols are not mirrored and dropped when forward-bpdu is
15 false. For a full list, see the ovs-vswitchd.conf.db man page.
16 - Open vSwitch now sends RARP packets in situations where it previously
17 sent a custom protocol, making it consistent with behavior of QEMU and
22 ------------------------
23 - kernel modules are renamed. openvswitch_mod.ko is now
24 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
25 - Increased the number of NXM registers to 8.
26 - Added ability to configure dscp setting for manager and controller
27 connections. By default, these connections have a DSCP value of
28 Internetwork Control (0xc0).
29 - Added the granular link health statistics, 'cfm_health', to an
32 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
33 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
36 - Added the "dump-ports-desc" command to retrieve port
37 information using the new port description multipart messages.
39 - Added support for spawning ovs-test server from the client.
40 - Now ovs-test is able to automatically create test bridges and ports.
41 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
42 - The "coverage/log" command previously available through ovs-appctl
43 has been replaced by "coverage/show". The new command replies with
44 coverage counter values, instead of logging them.
48 ------------------------
49 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
53 ------------------------
54 *** Internal only release ***
56 - LACP bonds no longer fall back to balance-slb when negotiations fail.
57 Instead they drop traffic.
58 - The default bond_mode changed from SLB to active-backup, to protect
59 unsuspecting users from the significant risks of SLB bonds (which are
60 documented in vswitchd/INTERNALS).
61 - Load balancing can be disabled by setting the bond-rebalance-interval
64 - Added support for bitwise matching on TCP and UDP ports.
65 See ovs-ofctl(8) for more information.
66 - NXM flow dumps now include times elapsed toward idle and hard
68 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
69 controllers more precise control over which OpenFlow messages they
70 receive asynchronously.
71 - New "fin_timeout" action.
72 - Added "fin_timeout" support to "learn" action.
73 - New Nicira action NXAST_CONTROLLER that offers additional features
74 over output to OFPP_CONTROLLER.
75 - When QoS settings for an interface do not configure a default queue
76 (queue 0), Open vSwitch now uses a default configuration for that
77 queue, instead of dropping all packets as in previous versions.
79 - Logging to console and file will have UTC timestamp as a default for
80 all the daemons. An example of the default format is
81 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
83 - The syntax of commands and options to set log levels was simplified,
84 to make it easier to remember.
85 - New support for limiting the number of flows in an OpenFlow flow
86 table, with configurable policy for evicting flows upon
87 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
89 - New "enable-async-messages" column in the Controller table. If set to
90 false, OpenFlow connections to the controller will initially have all
91 asynchronous messages disabled, overriding normal OpenFlow behavior.
92 - ofproto-provider interface:
93 - "struct rule" has a new member "used" that ofproto implementations
94 should maintain by updating with ofproto_rule_update_used().
96 - The new option --timestamp causes the "monitor" command to print
97 a timestamp with every update.
98 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
102 ------------------------
104 - Added support for querying, modifying, and deleting flows
105 based on flow cookie when using NXM.
106 - Added new NXM_PACKET_IN format.
107 - Added new NXAST_DEC_TTL action.
109 - Added daemonization support to the monitor and snoop commands.
111 - The "find" command supports new set relational operators
112 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
113 - ovsdb-tool now uses the typical database and schema installation
114 directories as defaults.
115 - The default MAC learning timeout has been increased from 60 seconds
116 to 300 seconds. The MAC learning timeout is now configurable.
120 ------------------------
121 - Compatible with Open vSwitch kernel module included in Linux 3.3.
122 - New "VLAN splinters" feature to work around buggy device drivers
123 in old Linux versions. (This feature is deprecated. When
124 broken device drivers are no longer in widespread use, we will
125 delete this feature.) See ovs-vswitchd.conf.db(5) for more
128 - Added ability to match on IPv6 flow label through NXM.
129 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
130 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
131 - Added ability to modify ECN bits in IPv4.
132 - Added ability to modify TTL in IPv4.
134 - Don't require the "normal" action to use mirrors. Traffic will
135 now be properly mirrored for any flows, regardless of their
137 - Track packet and byte statistics sent on mirrors.
138 - The sFlow implementation can now usually infer the correct agent
139 device instead of having to be told explicitly.
141 - New "fdb/flush" command to flush bridge's MAC learning table.
143 - A new distributed testing tool that allows one to diagnose performance
144 and connectivity issues. This tool currently is not included in RH or
146 - RHEL packaging now supports integration with Red Hat network scripts.
148 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
149 to active-backup. SLB bonds carry significant risks with them
150 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
151 users from running into. Users are advised to update any scripts or
152 configuration which may be negatively impacted by explicitly setting
153 the bond mode which they want to use.
157 ------------------------
159 - Added an OpenFlow extension which allows the "output" action to accept
161 - Added an OpenFlow extension for flexible learning.
162 - Bumped number of NXM registers from four to five.
164 - New "version" command to determine version of running daemon.
165 - If no argument is provided for "cfm/show", displays detailed
166 information about all interfaces with CFM enabled.
167 - If no argument is provided for "lacp/show", displays detailed
168 information about all ports with LACP enabled.
170 - New "set-if" command to modify a datapath port's configuration.
172 - The software switch now supports 255 OpenFlow tables, instead
173 of just one. By default, only table 0 is consulted, but the
174 new NXAST_RESUBMIT_TABLE action can look up in additional
175 tables. Tables 128 and above are reserved for use by the
176 switch itself; please use only tables 0 through 127.
177 - Add support for 802.1D spanning tree (STP).
178 - Fragment handling extensions:
179 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
180 fields are made available for matching in fragments with
182 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
183 via "ip_frag" in ovs-ofctl).
184 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
185 fragment handling policy.
186 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
187 By default it remains compatible with the old version and other
188 standards-based implementations.
189 - Flow setups are now processed in a round-robin manner across ports
190 to prevent any single client from monopolizing the CPU and conducting
191 a denial of service attack.
192 - Added support for native VLAN tagging. A new "vlan_mode"
193 parameter can be set for "port". Possible values: "access",
194 "trunk", "native-tagged" and "native-untagged".
195 - test-openflowd has been removed. Please use ovs-vswitchd instead.
198 ------------------------
199 - New "ofproto" abstraction layer to ease porting to hardware
201 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
202 - Datapath support for Linux kernels up to 3.0.
204 - New "bundle" and "bundle_load" action extensions.
206 - Implement table unique constraints.
207 - Support cooperative locking between callers.
209 - New "-s" option for "show" command prints packet and byte
210 counters for each port.
212 - New "--readd" option for "replace-flows".
214 - New "show" command to print an overview of configuration.
215 - New "comment" command to add remark that explains intentions.
216 - ovs-brcompatd has been rewritten to fix long-standing bugs.
217 - ovs-openflowd has been renamed test-openflowd and moved into the
218 tests directory. Its presence confused too many users. Please
219 use ovs-vswitchd instead.
220 - New ovs-benchmark utility to test flow setup performance.
221 - A new log level "off" has been added. Configuring a log facility
222 "off" prevents any messages from being logged to it. Previously,
223 "emer" was effectively "off" because no messages were ever logged at
224 level "emer". Now, errors that cause a process to exit are logged
226 - "configure" option --with-l26 has been renamed --with-linux, and
227 --with-l26-source has been renamed --with-linux-source. The old
228 names will be removed after the next release, so please update
230 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
231 datapath/linux-2.6/compat-2.6 directories.
233 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
234 Please use the extensible match extensions instead.
235 - Removed the Maintenance_Point and Monitor tables in an effort
236 to simplify 802.1ag configuration.
237 - Performance and scalability improvements
241 ------------------------
242 - Ability to define policies over IPv6
245 - Support for extensible match extensions to OpenFlow
247 - Support for HFSC qdisc.
248 - Queue used by in-band control can now be configured.
250 - Kernel<->userspace interface has been reworked and should be
251 close to a stable ABI now.
252 - "Port group" concept has been dropped.
253 - GRE over IPSEC tunnels
255 - New active backup bonding mode.
256 - New L4 hashing support when LACP is enabled.
257 - Source MAC hash now includes VLAN field also.
259 - Greatly improved handling of large flow tables
261 - "show" command now prints full vport configuration.
262 - "dump-groups" command removed since kernel support for
263 port groups was dropped.
265 - New commands for working with the new Managers table.
266 - "list" command enhanced with new formatting options and --columns
268 - "get" command now accepts new --id option.
269 - New "find" command.
271 - New "queue-stats" command for printing queue stats.
272 - New commands "replace-flows" and "diff-flows".
273 - Commands to add and remove flows can now read from files.
274 - New --flow-format option to enable or disable NXM.
275 - New --more option to increase OpenFlow message verbosity.
276 - Removed "tun-cookie" command, which is no longer useful.
277 - ovs-controller enhancements for testing various features.
278 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
279 bugs. New ovs-vlan-bug-workaround command for enabling and
280 disabling a workaround for these driver bugs.
282 - "Resubmit" actions now update flow statistics.
283 - New "register" extension for use in matching and actions, via NXM.
284 - New "multipath" experimental action extension.
285 - New support for matching multicast Ethernet frames, via NXM.
286 - New extension for OpenFlow vendor error codes.
287 - New extension to set the QoS output queue without actually
288 sending to an output port.
289 - Open vSwitch now reports a single flow table, instead of
290 separate hash and wildcard tables. This better models the
291 current implementation.
292 - New experimental "note" action.
293 - New "ofproto/trace" ovs-appctl command and associated utilities
294 to ease debugging complex flow tables.
296 - Schema documentation now includes an entity-relationship diagram.
297 - The database is now garbage collected. In most tables,
298 unreferenced rows will be deleted automatically.
299 - Many tables now include statistics updated periodically by
300 ovs-vswitchd or ovsdb-server.
301 - Every table now has an "external-ids" column for use by OVS
303 - There is no default controller anymore. Each bridge must have its
304 controller individually specified.
305 - The "fail-mode" is now a property of a Bridge instead of a Controller.
306 - New versioning and checksum features.
307 - New Managers table and manager_options column in Open_vSwitch table
308 for specifying managers. The old "managers" column in the
309 Open_vSwitch table has been removed.
310 - Many "name" columns are now immutable.
312 - Dropped support for XenServer pre-5.6.100.
313 - Dropped support for Linux pre-2.6.18.
314 - Dropped controller discovery support.
315 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
316 Statistics reporting in the database is a rough equivalent.
317 - Dropped the "corekeeper" package (now separate, at
318 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
319 - Performance and scalability improvements
322 v1.1.0pre2 - 13 Sep 2010
323 ------------------------
326 v1.1.0pre1 - 31 Aug 2010
327 ------------------------
328 - OpenFlow 1.0 slicing (QoS) functionality
329 - Python bindings for configuration database (no write support)
330 - Performance and scalability improvements
335 - New "patch" interface type
340 - Configuration database with remote management
343 - Support for XenServer 5.5 and 5.6
344 - Performance and scalability improvements
347 v0.99.2 - 18 Feb 2010
348 ---------------------
351 v0.99.1 - 25 Jan 2010
352 ---------------------
353 - Add support for sFlow(R)
354 - Make headers compatible with C++
357 v0.99.0 - 14 Jan 2010
358 ---------------------
359 - User-space forwarding engine
362 v0.90.7 - 29 Nov 2009
363 ---------------------
364 - Add support for NetFlow active timeouts
371 v0.90.5 - 21 Sep 2009
372 ---------------------
373 - Generalize in-band control to more diverse network setups
projects / openvswitch / blob