2 ------------------------
3 - kernel modules are renamed. openvswitch_mod.ko is now
4 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
5 - Increased the number of NXM registers to 8.
6 - Added ability to configure dscp setting for manager and controller
7 connections. By default, these connections have a DSCP value of
8 Internetwork Control (0xc0).
9 - Added the granular link health statistics, 'cfm_health', to an
12 - Added support for spawning ovs-test server from the client.
13 - Now ovs-test is able to automatically create test bridges and ports.
14 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
15 - The "coverage/log" command previously available through ovs-appctl
16 has been replaced by "coverage/show". The new command replies with
17 coverage counter values, instead of logging them.
21 ------------------------
23 - LACP bonds no longer fall back to balance-slb when negotiations fail.
24 Instead they drop traffic.
25 - The default bond_mode changed from SLB to active-backup, to protect
26 unsuspecting users from the significant risks of SLB bonds (which are
27 documented in vswitchd/INTERNALS).
28 - Load balancing can be disabled by setting the bond-rebalance-interval
31 - Added support for bitwise matching on TCP and UDP ports.
32 See ovs-ofctl(8) for more information.
33 - NXM flow dumps now include times elapsed toward idle and hard
35 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
36 controllers more precise control over which OpenFlow messages they
37 receive asynchronously.
38 - New "fin_timeout" action.
39 - Added "fin_timeout" support to "learn" action.
40 - New Nicira action NXAST_CONTROLLER that offers additional features
41 over output to OFPP_CONTROLLER.
42 - The default MAC learning timeout has been increased from 60 seconds
43 to 300 seconds. The MAC learning timeout is now configurable.
44 - When QoS settings for an interface do not configure a default queue
45 (queue 0), Open vSwitch now uses a default configuration for that
46 queue, instead of dropping all packets as in previous versions.
48 - Logging to console and file will have UTC timestamp as a default for
49 all the daemons. An example of the default format is
50 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
52 - The syntax of commands and options to set log levels was simplified,
53 to make it easier to remember.
54 - New support for limiting the number of flows in an OpenFlow flow
55 table, with configurable policy for evicting flows upon
56 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
58 - New "enable-async-messages" column in the Controller table. If set to
59 false, OpenFlow connections to the controller will initially have all
60 asynchronous messages disabled, overriding normal OpenFlow behavior.
61 - ofproto-provider interface:
62 - "struct rule" has a new member "used" that ofproto implementations
63 should maintain by updating with ofproto_rule_update_used().
65 - The new option --timestamp causes the "monitor" command to print
66 a timestamp with every update.
67 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
71 ------------------------
73 - Added support for querying, modifying, and deleting flows
74 based on flow cookie when using NXM.
75 - Added new NXM_PACKET_IN format.
76 - Added new NXAST_DEC_TTL action.
78 - Added daemonization support to the monitor and snoop commands.
80 - The "find" command supports new set relational operators
81 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
82 - ovsdb-tool now uses the typical database and schema installation
83 directories as defaults.
87 ------------------------
88 - Compatible with Open vSwitch kernel module included in Linux 3.3.
89 - New "VLAN splinters" feature to work around buggy device drivers
90 in old Linux versions. (This feature is deprecated. When
91 broken device drivers are no longer in widespread use, we will
92 delete this feature.) See ovs-vswitchd.conf.db(5) for more
95 - Added ability to match on IPv6 flow label through NXM.
96 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
97 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
98 - Added ability to modify ECN bits in IPv4.
99 - Added ability to modify TTL in IPv4.
101 - Don't require the "normal" action to use mirrors. Traffic will
102 now be properly mirrored for any flows, regardless of their
104 - Track packet and byte statistics sent on mirrors.
105 - The sFlow implementation can now usually infer the correct agent
106 device instead of having to be told explicitly.
108 - New "fdb/flush" command to flush bridge's MAC learning table.
110 - A new distributed testing tool that allows one to diagnose performance
111 and connectivity issues. This tool currently is not included in RH or
113 - RHEL packaging now supports integration with Red Hat network scripts.
115 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
116 to active-backup. SLB bonds carry significant risks with them
117 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
118 users from running into. Users are advised to update any scripts or
119 configuration which may be negatively impacted by explicitly setting
120 the bond mode which they want to use.
124 ------------------------
126 - Added an OpenFlow extension which allows the "output" action to accept
128 - Added an OpenFlow extension for flexible learning.
129 - Bumped number of NXM registers from four to five.
131 - New "version" command to determine version of running daemon.
132 - If no argument is provided for "cfm/show", displays detailed
133 information about all interfaces with CFM enabled.
134 - If no argument is provided for "lacp/show", displays detailed
135 information about all ports with LACP enabled.
137 - New "set-if" command to modify a datapath port's configuration.
139 - The software switch now supports 255 OpenFlow tables, instead
140 of just one. By default, only table 0 is consulted, but the
141 new NXAST_RESUBMIT_TABLE action can look up in additional
142 tables. Tables 128 and above are reserved for use by the
143 switch itself; please use only tables 0 through 127.
144 - Add support for 802.1D spanning tree (STP).
145 - Fragment handling extensions:
146 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
147 fields are made available for matching in fragments with
149 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
150 via "ip_frag" in ovs-ofctl).
151 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
152 fragment handling policy.
153 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
154 By default it remains compatible with the old version and other
155 standards-based implementations.
156 - Flow setups are now processed in a round-robin manner across ports
157 to prevent any single client from monopolizing the CPU and conducting
158 a denial of service attack.
159 - Added support for native VLAN tagging. A new "vlan_mode"
160 parameter can be set for "port". Possible values: "access",
161 "trunk", "native-tagged" and "native-untagged".
162 - test-openflowd has been removed. Please use ovs-vswitchd instead.
165 ------------------------
166 - New "ofproto" abstraction layer to ease porting to hardware
168 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
169 - Datapath support for Linux kernels up to 3.0.
171 - New "bundle" and "bundle_load" action extensions.
173 - Implement table unique constraints.
174 - Support cooperative locking between callers.
176 - New "-s" option for "show" command prints packet and byte
177 counters for each port.
179 - New "--readd" option for "replace-flows".
181 - New "show" command to print an overview of configuration.
182 - New "comment" command to add remark that explains intentions.
183 - ovs-brcompatd has been rewritten to fix long-standing bugs.
184 - ovs-openflowd has been renamed test-openflowd and moved into the
185 tests directory. Its presence confused too many users. Please
186 use ovs-vswitchd instead.
187 - New ovs-benchmark utility to test flow setup performance.
188 - A new log level "off" has been added. Configuring a log facility
189 "off" prevents any messages from being logged to it. Previously,
190 "emer" was effectively "off" because no messages were ever logged at
191 level "emer". Now, errors that cause a process to exit are logged
193 - "configure" option --with-l26 has been renamed --with-linux, and
194 --with-l26-source has been renamed --with-linux-source. The old
195 names will be removed after the next release, so please update
197 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
198 datapath/linux-2.6/compat-2.6 directories.
200 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
201 Please use the extensible match extensions instead.
202 - Removed the Maintenance_Point and Monitor tables in an effort
203 to simplify 802.1ag configuration.
204 - Performance and scalability improvements
208 ------------------------
209 - Ability to define policies over IPv6
212 - Support for extensible match extensions to OpenFlow
214 - Support for HFSC qdisc.
215 - Queue used by in-band control can now be configured.
217 - Kernel<->userspace interface has been reworked and should be
218 close to a stable ABI now.
219 - "Port group" concept has been dropped.
220 - GRE over IPSEC tunnels
222 - New active backup bonding mode.
223 - New L4 hashing support when LACP is enabled.
224 - Source MAC hash now includes VLAN field also.
226 - Greatly improved handling of large flow tables
228 - "show" command now prints full vport configuration.
229 - "dump-groups" command removed since kernel support for
230 port groups was dropped.
232 - New commands for working with the new Managers table.
233 - "list" command enhanced with new formatting options and --columns
235 - "get" command now accepts new --id option.
236 - New "find" command.
238 - New "queue-stats" command for printing queue stats.
239 - New commands "replace-flows" and "diff-flows".
240 - Commands to add and remove flows can now read from files.
241 - New --flow-format option to enable or disable NXM.
242 - New --more option to increase OpenFlow message verbosity.
243 - Removed "tun-cookie" command, which is no longer useful.
244 - ovs-controller enhancements for testing various features.
245 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
246 bugs. New ovs-vlan-bug-workaround command for enabling and
247 disabling a workaround for these driver bugs.
249 - "Resubmit" actions now update flow statistics.
250 - New "register" extension for use in matching and actions, via NXM.
251 - New "multipath" experimental action extension.
252 - New support for matching multicast Ethernet frames, via NXM.
253 - New extension for OpenFlow vendor error codes.
254 - New extension to set the QoS output queue without actually
255 sending to an output port.
256 - Open vSwitch now reports a single flow table, instead of
257 separate hash and wildcard tables. This better models the
258 current implementation.
259 - New experimental "note" action.
260 - New "ofproto/trace" ovs-appctl command and associated utilities
261 to ease debugging complex flow tables.
263 - Schema documentation now includes an entity-relationship diagram.
264 - The database is now garbage collected. In most tables,
265 unreferenced rows will be deleted automatically.
266 - Many tables now include statistics updated periodically by
267 ovs-vswitchd or ovsdb-server.
268 - Every table now has an "external-ids" column for use by OVS
270 - There is no default controller anymore. Each bridge must have its
271 controller individually specified.
272 - The "fail-mode" is now a property of a Bridge instead of a Controller.
273 - New versioning and checksum features.
274 - New Managers table and manager_options column in Open_vSwitch table
275 for specifying managers. The old "managers" column in the
276 Open_vSwitch table has been removed.
277 - Many "name" columns are now immutable.
279 - Dropped support for XenServer pre-5.6.100.
280 - Dropped support for Linux pre-2.6.18.
281 - Dropped controller discovery support.
282 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
283 Statistics reporting in the database is a rough equivalent.
284 - Dropped the "corekeeper" package (now separate, at
285 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
286 - Performance and scalability improvements
289 v1.1.0pre2 - 13 Sep 2010
290 ------------------------
293 v1.1.0pre1 - 31 Aug 2010
294 ------------------------
295 - OpenFlow 1.0 slicing (QoS) functionality
296 - Python bindings for configuration database (no write support)
297 - Performance and scalability improvements
302 - New "patch" interface type
307 - Configuration database with remote management
310 - Support for XenServer 5.5 and 5.6
311 - Performance and scalability improvements
314 v0.99.2 - 18 Feb 2010
315 ---------------------
318 v0.99.1 - 25 Jan 2010
319 ---------------------
320 - Add support for sFlow(R)
321 - Make headers compatible with C++
324 v0.99.0 - 14 Jan 2010
325 ---------------------
326 - User-space forwarding engine
329 v0.90.7 - 29 Nov 2009
330 ---------------------
331 - Add support for NetFlow active timeouts
338 v0.90.5 - 21 Sep 2009
339 ---------------------
340 - Generalize in-band control to more diverse network setups
projects / openvswitch / blob