4 * New "monitor2" and "update2" extensions to RFC 7047.
6 * OpenFlow 1.1+ OFPT_QUEUE_GET_CONFIG_REQUEST now supports OFPP_ANY.
7 * OpenFlow 1.4+ OFPMP_QUEUE_DESC is now supported.
9 * queue-get-config command now allows a queue ID to be specified.
11 * New option "n_rxq" for PMD interfaces.
12 Old 'other_config:n-dpdk-rxqs' is no longer supported.
17 - Dropped support for Python older than version 2.7. As a consequence,
18 using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
19 have Python 2.4) requires first installing Python 2.7.
21 * Group chaining (where one OpenFlow group triggers another) is
23 * OpenFlow 1.4+ "importance" is now considered for flow eviction.
24 * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
25 * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
26 * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
27 * Allow modifying the ICMPv4/ICMPv6 type and code fields.
28 * OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG are
31 * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
33 * Geneve tunnels can now match and set options and the OAM bit.
34 * The nonstandard GRE64 tunnel extension has been dropped.
35 - Support Multicast Listener Discovery (MLDv1 and MLDv2).
36 - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
37 - sFlow agent now reports tunnel and MPLS structures.
38 - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
39 targets to run a new system testsuite. These tests can be run inside
40 a Vagrant box. See INSTALL.md for details
41 - Mark --syslog-target argument as deprecated. It will be removed in
43 - Added --user option to all daemons
44 - Add support for connection tracking through the new "ct" action
45 and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
46 available on Linux kernels with the connection tracking module loaded.
47 - Add experimental version of OVN. OVN, the Open Virtual Network, is a
48 system to support virtual network abstraction. OVN complements the
49 existing capabilities of OVS to add native support for virtual network
50 abstractions, such as virtual L2 and L3 overlays and security groups.
52 * DPDK ports may now be created via network scripts (see README.RHEL).
55 * Added multiqueue support to vhost-user
60 - Flow table modifications are now atomic, meaning that each packet
61 now sees a coherent version of the OpenFlow pipeline. For
62 example, if a controller removes all flows with a single OpenFlow
63 "flow_mod", no packet sees an intermediate version of the OpenFlow
64 pipeline where only some of the flows have been deleted.
65 - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
66 - Add bash command-line completion support for ovs-vsctl Please check
67 utilities/ovs-command-compgen.INSTALL.md for how to use.
68 - The MAC learning feature now includes per-port fairness to mitigate
70 - New support for a "conjunctive match" OpenFlow extension, which
71 allows constructing OpenFlow matches of the form "field1 in
72 {a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
73 see documentation for the "conjunction" action in ovs-ofctl(8).
74 - Add bash command-line completion support for ovs-appctl/ovs-dpctl/
75 ovs-ofctl/ovsdb-tool commands. Please check
76 utilities/ovs-command-compgen.INSTALL.md for how to use.
77 - The "learn" action supports a new flag "delete_learned" that causes
78 the learned flows to be deleted when the flow with the "learn" action
80 - Basic support for the Geneve tunneling protocol. It is not yet
81 possible to generate or match options. This is planned for a future
82 release. The protocol is documented at
83 http://tools.ietf.org/html/draft-gross-geneve-00
84 - The OVS database now reports controller rate limiting statistics.
85 - sflow now exports information about LACP-based bonds, port names, and
86 OpenFlow port numbers, as well as datapath performance counters.
87 - ovs-dpctl functionality is now available for datapaths integrated
88 into ovs-vswitchd, via ovs-appctl. Some existing ovs-appctl
89 commands are now redundant and will be removed in a future
90 release. See ovs-vswitchd(8) for details.
92 * OpenFlow 1.4 bundles are now supported for flow mods and port
93 mods. For flow mods, both 'atomic' and 'ordered' bundle flags
94 are trivially supported, as all bundled messages are executed
95 in the order they were added and all flow table modifications
96 are now atomic to the datapath. Port mods may not appear in
97 atomic bundles, as port status modifications are not atomic.
98 * IPv6 flow label and neighbor discovery fields are now modifiable.
99 * OpenFlow 1.5 extended registers are now supported.
100 * The OpenFlow 1.5 actset_output field is now supported.
101 * OpenFlow 1.5 Copy-Field action is now supported.
102 * OpenFlow 1.5 masked Set-Field action is now supported.
103 * OpenFlow 1.3+ table features requests are now supported (read-only).
104 * Nicira extension "move" actions may now be included in action sets.
105 * "resubmit" actions may now be included in action sets. The resubmit
106 is executed last, and only if the action set has no "output" or "group"
108 * OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
109 * A new Netronome extension to OpenFlow 1.5+ allows control over the
110 fields hashed for OpenFlow select groups. See "selection_method" and
111 related options in ovs-ofctl(8) for details.
112 - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
113 ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
114 use an OpenFlow 1.4 bundle to operate the modifications as a single
115 atomic transaction. If any of the flow mods in a transaction fail, none
116 of them are executed. All flow mods in a bundle appear to datapath
117 lookups simultaneously.
118 - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
119 mods as an input by allowing the flow specification to start with an
120 explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
121 keyword. A missing keyword is treated as 'add', so this is fully
122 backwards compatible. With the new '--bundle' option all the flow mods
123 are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
124 - ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
125 MD5 is no longer secure and some operating systems have started to disable
127 - ovsdb-server: New OVSDB protocol extension allows inequality tests on
128 "optional scalar" columns. See ovsdb-server(1) for details.
129 - ovs-vsctl now permits immutable columns in a new row to be modified in
130 the same transaction that creates the row.
131 - test-controller has been renamed ovs-testcontroller at request of users
132 who find it useful for testing basic OpenFlow setups. It is still not
133 a necessary or desirable part of most Open vSwitch deployments.
134 - Support for travis-ci.org based continuous integration builds has been
135 added. Build failures are reported to build@openvswitch.org. See INSTALL.md
136 file for additional details.
137 - Support for the Rapid Spanning Tree Protocol (IEEE 802.1D-2004).
138 The implementation has been tested successfully against the Ixia Automated
139 Network Validation Library (ANVL).
140 - Stats are no longer updated on fake bond interface.
141 - Keep active bond slave selection across OVS restart.
142 - A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
143 containers. If and when there is a native integration of Open vSwitch
144 with Docker, the wrapper script will be retired.
145 - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
146 protocols. This is generic tunneling mechanism for userspace datapath.
147 - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
148 - Support for Linux kernels up to 4.0.x
149 - The documentation now use the term 'destination' to mean one of syslog,
150 console or file for vlog logging instead of the previously used term
152 - Support for VXLAN Group Policy extension
153 - Initial support for the IETF Auto-Attach SPBM draft standard. This
154 contains rudimentary support for the LLDP protocol as needed for
156 - The default OpenFlow and OVSDB ports are now the IANA-assigned
157 numbers. OpenFlow is 6653 and OVSDB is 6640.
158 - Support for DPDK vHost.
159 - Support for outer UDP checksums in Geneve and VXLAN.
160 - The kernel vports with dependencies are no longer part of the overall
161 openvswitch.ko but built and loaded automatically as individual kernel
162 modules (vport-*.ko).
163 - Support for STT tunneling.
164 - ovs-sim: New developer tool for simulating multiple OVS instances.
165 See ovs-sim(1) for more information.
166 - Support to configure method (--syslog-method argument) that determines
167 how daemons will talk with syslog.
168 - Support for "ovs-appctl vlog/list-pattern" command that lets to query
169 logging message format for each destination.
173 ---------------------
174 - OpenFlow 1.1, 1.2, and 1.3 are now enabled by default in
176 - Linux kernel datapath now has an exact match cache optimizing the
177 flow matching process.
178 - Datapath flows now have partially wildcarded tranport port field
179 matches. This reduces userspace upcalls, but increases the
180 number of different masks in the datapath. The kernel datapath
181 exact match cache removes the overhead of matching the incoming
182 packets with the larger number of masks, but when paired with an
183 older kernel module, some workloads may perform worse with the
185 - Compatibility with autoconf 2.63 (previously >=2.64)
187 v2.2.0 - Internal Release
188 ---------------------
189 - Internal ports are no longer brought up by default, because it
190 should be an administrator task to bring up devices as they are
192 - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
194 - Port creation and configuration errors are now stored in a new error
195 column of the Interface table and included in 'ovs-vsctl show'.
196 - The "ovsdbmonitor" graphical tool has been removed, because it was
197 poorly maintained and not widely used.
198 - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
199 controllers against Open vSwitch. See INSTALL.md for details.
200 - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
201 - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
202 log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
204 - Support for Linux kernels up to 3.14. From Kernel 3.12 onwards OVS uses
205 tunnel API for GRE and VXLAN.
206 - Added DPDK support.
207 - Added support for custom vlog patterns in Python
211 ---------------------
212 - Address prefix tracking support for flow tables. New columns
213 "prefixes" in OVS-DB table "Flow_Table" controls which packet
214 header fields are used for address prefix tracking. Prefix
215 tracking allows the classifier to skip rules with longer than
216 necessary prefixes, resulting in better wildcarding for datapath
217 flows. Default configuration is to not use any fields for prefix
218 tracking. However, if any flow tables contain both exact matches
219 and masked matches for IP address fields, OVS performance may be
220 increased by using this feature.
221 * As of now, the fields for which prefix lookup can be enabled
222 are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
223 aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
224 (Using this feature for 'tun_id' would only make sense if the
225 tunnel IDs have prefix structure similar to IP addresses.)
226 * There is a maximum number of fields that can be enabled for any
227 one flow table. Currently this limit is 3.
229 $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
230 --id=@N1 create Flow_Table name=table0
231 $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
232 --id=@N1 create Flow_Table name=table1
233 $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
234 $ ovs-vsctl set Flow_Table table1 prefixes=[]
235 - TCP flags matching: OVS now supports matching of TCP flags. This
236 has an adverse performance impact when using OVS userspace 1.10
237 or older (no megaflows support) together with the new OVS kernel
238 module. It is recommended that the kernel and userspace modules
239 both are upgraded at the same time.
240 - The default OpenFlow and OVSDB ports will change to
241 IANA-assigned numbers in a future release. Consider updating
242 your installations to specify port numbers instead of using the
245 * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
246 * OVS limits the OpenFlow port numbers it assigns to port 32767 and
247 below, leaving port numbers above that range free for assignment
249 * ovs-vswitchd now honors changes to the "ofport_request" column
250 in the Interface table by changing the port's OpenFlow port
252 * The Open vSwitch software switch now supports OpenFlow groups.
253 - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
254 diagram only if graphviz package was installed at the build time.
255 - Support for Linux kernels up to 3.11
257 The "show" command also displays mega flow mask stats.
259 * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
260 - ovs-controller has been renamed test-controller. It is no longer
261 packaged or installed by default, because too many users assumed
262 incorrectly that ovs-controller was a necessary or desirable part
263 of an Open vSwitch deployment.
264 - Added vlog option to export to a UDP syslog sink.
266 * The "monitor" command can now monitor all tables in a database,
267 instead of being limited to a single table.
268 - The flow-eviction-threshold has been replaced by the flow-limit which is a
269 hard limit on the number of flows in the datapath. It defaults to 200,000
270 flows. OVS automatically adjusts this number depending on network
272 - Added IPv6 support for active and passive socket communications.
276 ---------------------
277 - The ovs-vswitchd process is no longer single-threaded. Multiple
278 threads are now used to handle flow set up and asynchronous
281 * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
282 1.3, which had experimental support in 1.10).
283 * Experimental protocol support for OpenFlow 1.1+ groups. This
284 does not yet include an implementation in the Open vSwitch
286 * Experimental protocol support for OpenFlow 1.2+ meters. This
287 does not yet include an implementation in the Open vSwitch
289 * New support for matching outer source and destination IP address
290 of tunneled packets, for tunnel ports configured with the newly
291 added "remote_ip=flow" and "local_ip=flow" options.
292 * Support for matching on metadata 'pkt_mark' for interacting with
293 other system components. On Linux this corresponds to the skb
295 * Support matching, rewriting SCTP ports
296 - The Interface table in the database has a new "ifindex" column to
297 report the interface's OS-assigned ifindex.
298 - New "check-oftest" Makefile target for running OFTest against Open
299 vSwitch. See README-OFTest for details.
300 - The flow eviction threshold has been moved to the Open_vSwitch table.
301 - Database names are now mandatory when specifying ovsdb-server options
302 through database paths (e.g. Private key option with the database name
303 should look like "--private-key=db:Open_vSwitch,SSL,private_key").
304 - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
305 - Support for Linux kernels up to 3.10
307 * New "ofp-parse" for printing OpenFlow messages read from a file.
308 * New commands for OpenFlow 1.1+ groups.
309 - Added configurable flow caching support to IPFIX exporter.
310 - Dropped support for Linux pre-2.6.32.
311 - Log file timestamps and ovsdb commit timestamps are now reported
312 with millisecond resolution. (Previous versions only reported
316 v1.11.0 - 28 Aug 2013
317 ---------------------
318 - Support for megaflows, which allows wildcarding in the kernel (and
319 any dpif implementation that supports wildcards). Depending on
320 the flow table and switch configuration, flow set up rates are
321 close to the Linux bridge.
322 - The "tutorial" directory contains a new tutorial for some advanced
323 Open vSwitch features.
324 - Stable bond mode has been removed.
325 - The autopath action has been removed.
326 - New support for the data encapsulation format of the LISP tunnel
327 protocol (RFC 6830). An external control plane or manual flow
328 setup is required for EID-to-RLOC mapping.
330 * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
331 1.1 and later are now implemented.
332 * New "stack" extension for use in actions, to push and pop from
334 * The "load" and "set_field" actions can now modify the "in_port". (This
335 allows one to enable output to a flow's input port by setting the
336 in_port to some unused value, such as OFPP_NONE.)
338 * New debugging commands "add-flow", "mod-flow", "del-flow".
339 * "dump-flows" now has a -m option to increase output verbosity.
340 - In dpif-based bridges, cache action translations, which can improve
341 flow set up performance by 80% with a complicated flow table.
342 - New syslog format, prefixed with "ovs|", to be easier to filter.
343 - RHEL: Removes the default firewall rule that allowed GRE traffic to
344 pass through. Any users that relied on this automatic firewall hole
345 will have to manually configure it. The ovs-ctl(8) manpage documents
346 the "enable-protocol" command that can be used as an alternative.
347 - New CFM demand mode which uses data traffic to indicate interface
350 v1.10.0 - 01 May 2013
351 ---------------------
352 - Bridge compatibility support has been removed. Any uses that
353 rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
354 or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
356 - The maximum size of the MAC learning table is now configurable.
357 - With the Linux datapath, packets for new flows are now queued
358 separately on a per-port basis, so it should no longer be
359 possible for a large number of new flows arriving on one port to
360 prevent new flows from being processed on other ports.
362 * Previously ovs-vsctl would retry connecting to the database forever,
363 causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
364 only tries once by default (use --retry to try forever). This change
365 means that you may want to remove uses of --timeout to avoid hangs
367 * Many "ovs-vsctl" database commands now accept an --if-exists option.
368 Please refer to the ovs-vsctl manpage for details.
370 - Experimental support for newer versions of OpenFlow. See
371 the "What versions of OpenFlow does Open vSwitch support?"
372 question in the FAQ for more details.
373 - The OpenFlow "dp_desc" may now be configured by setting the
374 value of other-config:dp-desc in the Bridge table.
375 - It is possible to request the OpenFlow port number with the
376 "ofport_request" column in the Interface table.
377 - The NXM flow_removed message now reports the OpenFlow table ID
378 from which the flow was removed.
380 - New support for the VXLAN tunnel protocol (see the IETF draft here:
381 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
382 - Tunneling requires the version of the kernel module paired with
383 Open vSwitch 1.9.0 or later.
384 - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
385 is no longer supported.
386 - Path MTU discovery is no longer supported.
387 - CAPWAP tunneling support removed.
388 - Tunnels with multicast destination ports are no longer supported.
390 - The "dump-flows" and "del-flows" no longer require an argument
391 if only one datapath exists.
393 - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
394 commands available allow control over logging rate limits.
395 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
396 that mimic the equivalent ovs-dpctl commands.
397 - The ofproto library is now responsible for assigning OpenFlow port
398 numbers. An ofproto implementation should assign them when
399 port_construct() is called.
400 - All dpif-based bridges of a particular type share a common
401 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
402 commands will now return information on that shared datapath. To
403 get the equivalent bridge-specific information, use the new
404 "ovs-appctl dpif/*" commands.
405 - Backward-incompatible changes:
406 - Earlier Open vSwitch versions treated ANY as a wildcard in flow
407 syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
408 conflict. ANY was rarely used in flow syntax, so we chose to
409 retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
410 - Patch ports no longer require kernel support, so they now work
411 with FreeBSD and the kernel module built into Linux 3.3 and later.
412 - New "sample" action.
416 ------------------------
418 - Support for ipv6 set action.
419 - SKB mark matching and setting.
420 - support for Linux kernels up to 3.8
421 - FreeBSD is now a supported platform, thanks to code contributions from
422 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
423 - ovs-bugtool: New --ovs option to report only OVS related information.
424 - New %t and %T log escapes to identify the subprogram within a
425 cooperating group of processes or threads that emitted a log message.
426 The default log patterns now include this information.
428 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
429 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
430 - Adds support for writing to the metadata field for a flow.
432 - The tunneling code no longer assumes input and output keys are
433 symmetric. If they are not, PMTUD needs to be disabled for
434 tunneling to work. Note this only applies to flow-based keys.
435 - New support for a nonstandard form of GRE that supports a 64-bit key.
436 - Tunnel Path MTU Discovery default value was set to 'disabled'.
437 This feature is deprecated and will be removed soon.
438 - Tunnel header caching removed.
440 - Commands and actions that accept port numbers now also accept keywords
441 that represent those ports (such as LOCAL, NONE, and ALL). This is
442 also the recommended way to specify these ports, for compatibility
443 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
444 for these ports for different purposes).
446 - Support requesting the port number with the "port_no" option in
447 the "add-if" command.
448 - ovs-pki: The "online PKI" features have been removed, along with
449 the ovs-pki-cgi program that facilitated it, because of some
450 alarmist insecurity claims. We do not believe that these claims
451 are true, but because we do not know of any users for this
452 feature it seems better on balance to remove it. (The ovs-pki-cgi
453 program was not included in distribution packaging.)
454 - ovsdb-server now enforces the immutability of immutable columns. This
455 was not enforced in earlier versions due to an oversight.
456 - The following features are now deprecated. They will be removed no
457 earlier than February 2013. Please email dev@openvswitch.org with
459 - Bridge compatibility.
461 - The autopath action.
462 - Interface type "null".
463 - Numeric values for reserved ports (see "ovs-ofctl" note above).
464 - Tunnel Path MTU Discovery.
465 - CAPWAP tunnel support.
466 - The data in the RARP packets can now be matched in the same way as the
471 ------------------------
472 *** Internal only release ***
473 - New FAQ. Please send updates and additions!
474 - Authors of controllers, please read the new section titled "Action
475 Reproduction" in DESIGN, which describes an Open vSwitch change in
476 behavior in corner cases that may affect some controllers.
478 - A new test utility that can create L3 tunnel between two Open
479 vSwitches and detect connectivity issues.
481 - New --sort and --rsort options for "dump-flows" command.
482 - "mod-port" command can now control all OpenFlow config flags.
484 - Allow general bitwise masking for IPv4 and IPv6 addresses in
485 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
487 - Allow support for arbitrary Ethernet masks. (Previously, only
488 the multicast bit in the destination address could be individually
490 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
491 - The OFPST_QUEUE request now reports an error if a specified port or
492 queue does not exist, or for requests for a specific queue on all
493 ports, if the specified queue does not exist on any port. (Previous
494 versions generally reported an empty set of results.)
495 - New "flow monitor" feature to allow controllers to be notified of
496 flow table changes as they happen.
497 - Additional protocols are not mirrored and dropped when forward-bpdu is
498 false. For a full list, see the ovs-vswitchd.conf.db man page.
499 - Open vSwitch now sends RARP packets in situations where it previously
500 sent a custom protocol, making it consistent with behavior of QEMU and
502 - All Open vSwitch programs and log files now show timestamps in UTC,
503 instead the local timezone, by default.
507 ------------------------
508 - kernel modules are renamed. openvswitch_mod.ko is now
509 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
510 - Increased the number of NXM registers to 8.
511 - Added ability to configure DSCP setting for manager and controller
512 connections. By default, these connections have a DSCP value of
513 Internetwork Control (0xc0).
514 - Added the granular link health statistics, 'cfm_health', to an
517 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
518 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
521 - Added the "dump-ports-desc" command to retrieve port
522 information using the new port description multipart messages.
524 - Added support for spawning ovs-test server from the client.
525 - Now ovs-test is able to automatically create test bridges and ports.
526 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
527 - Tripled flow setup performance.
528 - The "coverage/log" command previously available through ovs-appctl
529 has been replaced by "coverage/show". The new command replies with
530 coverage counter values, instead of logging them.
534 ------------------------
535 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
539 ------------------------
540 *** Internal only release ***
542 - LACP bonds no longer fall back to balance-slb when negotiations fail.
543 Instead they drop traffic.
544 - The default bond_mode changed from SLB to active-backup, to protect
545 unsuspecting users from the significant risks of SLB bonds (which are
546 documented in vswitchd/INTERNALS).
547 - Load balancing can be disabled by setting the bond-rebalance-interval
550 - Added support for bitwise matching on TCP and UDP ports.
551 See ovs-ofctl(8) for more information.
552 - NXM flow dumps now include times elapsed toward idle and hard
554 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
555 controllers more precise control over which OpenFlow messages they
556 receive asynchronously.
557 - New "fin_timeout" action.
558 - Added "fin_timeout" support to "learn" action.
559 - New Nicira action NXAST_CONTROLLER that offers additional features
560 over output to OFPP_CONTROLLER.
561 - When QoS settings for an interface do not configure a default queue
562 (queue 0), Open vSwitch now uses a default configuration for that
563 queue, instead of dropping all packets as in previous versions.
565 - Logging to console and file will have UTC timestamp as a default for
566 all the daemons. An example of the default format is
567 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
569 - The syntax of commands and options to set log levels was simplified,
570 to make it easier to remember.
571 - New support for limiting the number of flows in an OpenFlow flow
572 table, with configurable policy for evicting flows upon
573 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
574 for more information.
575 - New "enable-async-messages" column in the Controller table. If set to
576 false, OpenFlow connections to the controller will initially have all
577 asynchronous messages disabled, overriding normal OpenFlow behavior.
578 - ofproto-provider interface:
579 - "struct rule" has a new member "used" that ofproto implementations
580 should maintain by updating with ofproto_rule_update_used().
582 - The new option --timestamp causes the "monitor" command to print
583 a timestamp with every update.
584 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
588 ------------------------
590 - Added support for querying, modifying, and deleting flows
591 based on flow cookie when using NXM.
592 - Added new NXM_PACKET_IN format.
593 - Added new NXAST_DEC_TTL action.
595 - Added daemonization support to the monitor and snoop commands.
597 - The "find" command supports new set relational operators
598 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
599 - ovsdb-tool now uses the typical database and schema installation
600 directories as defaults.
601 - The default MAC learning timeout has been increased from 60 seconds
602 to 300 seconds. The MAC learning timeout is now configurable.
606 ------------------------
607 - Compatible with Open vSwitch kernel module included in Linux 3.3.
608 - New "VLAN splinters" feature to work around buggy device drivers
609 in old Linux versions. (This feature is deprecated. When
610 broken device drivers are no longer in widespread use, we will
611 delete this feature.) See ovs-vswitchd.conf.db(5) for more
614 - Added ability to match on IPv6 flow label through NXM.
615 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
616 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
617 - Added ability to modify ECN bits in IPv4.
618 - Added ability to modify TTL in IPv4.
620 - Don't require the "normal" action to use mirrors. Traffic will
621 now be properly mirrored for any flows, regardless of their
623 - Track packet and byte statistics sent on mirrors.
624 - The sFlow implementation can now usually infer the correct agent
625 device instead of having to be told explicitly.
627 - New "fdb/flush" command to flush bridge's MAC learning table.
629 - A new distributed testing tool that allows one to diagnose performance
630 and connectivity issues. This tool currently is not included in RH or
632 - RHEL packaging now supports integration with Red Hat network scripts.
634 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
635 to active-backup. SLB bonds carry significant risks with them
636 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
637 users from running into. Users are advised to update any scripts or
638 configuration which may be negatively impacted by explicitly setting
639 the bond mode which they want to use.
643 ------------------------
645 - Added an OpenFlow extension which allows the "output" action to accept
647 - Added an OpenFlow extension for flexible learning.
648 - Bumped number of NXM registers from four to five.
650 - New "version" command to determine version of running daemon.
651 - If no argument is provided for "cfm/show", displays detailed
652 information about all interfaces with CFM enabled.
653 - If no argument is provided for "lacp/show", displays detailed
654 information about all ports with LACP enabled.
656 - New "set-if" command to modify a datapath port's configuration.
658 - The software switch now supports 255 OpenFlow tables, instead
659 of just one. By default, only table 0 is consulted, but the
660 new NXAST_RESUBMIT_TABLE action can look up in additional
661 tables. Tables 128 and above are reserved for use by the
662 switch itself; please use only tables 0 through 127.
663 - Add support for 802.1D spanning tree (STP).
664 - Fragment handling extensions:
665 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
666 fields are made available for matching in fragments with
668 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
669 via "ip_frag" in ovs-ofctl).
670 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
671 fragment handling policy.
672 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
673 By default it remains compatible with the old version and other
674 standards-based implementations.
675 - Flow setups are now processed in a round-robin manner across ports
676 to prevent any single client from monopolizing the CPU and conducting
677 a denial of service attack.
678 - Added support for native VLAN tagging. A new "vlan_mode"
679 parameter can be set for "port". Possible values: "access",
680 "trunk", "native-tagged" and "native-untagged".
681 - test-openflowd has been removed. Please use ovs-vswitchd instead.
684 ------------------------
685 - New "ofproto" abstraction layer to ease porting to hardware
687 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
688 - Datapath support for Linux kernels up to 3.0.
690 - New "bundle" and "bundle_load" action extensions.
692 - Implement table unique constraints.
693 - Support cooperative locking between callers.
695 - New "-s" option for "show" command prints packet and byte
696 counters for each port.
698 - New "--readd" option for "replace-flows".
700 - New "show" command to print an overview of configuration.
701 - New "comment" command to add remark that explains intentions.
702 - ovs-brcompatd has been rewritten to fix long-standing bugs.
703 - ovs-openflowd has been renamed test-openflowd and moved into the
704 tests directory. Its presence confused too many users. Please
705 use ovs-vswitchd instead.
706 - New ovs-benchmark utility to test flow setup performance.
707 - A new log level "off" has been added. Configuring a log facility
708 "off" prevents any messages from being logged to it. Previously,
709 "emer" was effectively "off" because no messages were ever logged at
710 level "emer". Now, errors that cause a process to exit are logged
712 - "configure" option --with-l26 has been renamed --with-linux, and
713 --with-l26-source has been renamed --with-linux-source. The old
714 names will be removed after the next release, so please update
716 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
717 datapath/linux-2.6/compat-2.6 directories.
719 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
720 Please use the extensible match extensions instead.
721 - Removed the Maintenance_Point and Monitor tables in an effort
722 to simplify 802.1ag configuration.
723 - Performance and scalability improvements
727 ------------------------
728 - Ability to define policies over IPv6
731 - Support for extensible match extensions to OpenFlow
733 - Support for HFSC qdisc.
734 - Queue used by in-band control can now be configured.
736 - Kernel<->userspace interface has been reworked and should be
737 close to a stable ABI now.
738 - "Port group" concept has been dropped.
739 - GRE over IPSEC tunnels
741 - New active backup bonding mode.
742 - New L4 hashing support when LACP is enabled.
743 - Source MAC hash now includes VLAN field also.
745 - Greatly improved handling of large flow tables
747 - "show" command now prints full vport configuration.
748 - "dump-groups" command removed since kernel support for
749 port groups was dropped.
751 - New commands for working with the new Managers table.
752 - "list" command enhanced with new formatting options and --columns
754 - "get" command now accepts new --id option.
755 - New "find" command.
757 - New "queue-stats" command for printing queue stats.
758 - New commands "replace-flows" and "diff-flows".
759 - Commands to add and remove flows can now read from files.
760 - New --flow-format option to enable or disable NXM.
761 - New --more option to increase OpenFlow message verbosity.
762 - Removed "tun-cookie" command, which is no longer useful.
763 - ovs-controller enhancements for testing various features.
764 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
765 bugs. New ovs-vlan-bug-workaround command for enabling and
766 disabling a workaround for these driver bugs.
768 - "Resubmit" actions now update flow statistics.
769 - New "register" extension for use in matching and actions, via NXM.
770 - New "multipath" experimental action extension.
771 - New support for matching multicast Ethernet frames, via NXM.
772 - New extension for OpenFlow vendor error codes.
773 - New extension to set the QoS output queue without actually
774 sending to an output port.
775 - Open vSwitch now reports a single flow table, instead of
776 separate hash and wildcard tables. This better models the
777 current implementation.
778 - New experimental "note" action.
779 - New "ofproto/trace" ovs-appctl command and associated utilities
780 to ease debugging complex flow tables.
782 - Schema documentation now includes an entity-relationship diagram.
783 - The database is now garbage collected. In most tables,
784 unreferenced rows will be deleted automatically.
785 - Many tables now include statistics updated periodically by
786 ovs-vswitchd or ovsdb-server.
787 - Every table now has an "external-ids" column for use by OVS
789 - There is no default controller anymore. Each bridge must have its
790 controller individually specified.
791 - The "fail-mode" is now a property of a Bridge instead of a Controller.
792 - New versioning and checksum features.
793 - New Managers table and manager_options column in Open_vSwitch table
794 for specifying managers. The old "managers" column in the
795 Open_vSwitch table has been removed.
796 - Many "name" columns are now immutable.
798 - Dropped support for XenServer pre-5.6.100.
799 - Dropped support for Linux pre-2.6.18.
800 - Dropped controller discovery support.
801 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
802 Statistics reporting in the database is a rough equivalent.
803 - Dropped the "corekeeper" package (now separate, at
804 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
805 - Performance and scalability improvements
808 v1.1.0pre2 - 13 Sep 2010
809 ------------------------
812 v1.1.0pre1 - 31 Aug 2010
813 ------------------------
814 - OpenFlow 1.0 slicing (QoS) functionality
815 - Python bindings for configuration database (no write support)
816 - Performance and scalability improvements
821 - New "patch" interface type
826 - Configuration database with remote management
829 - Support for XenServer 5.5 and 5.6
830 - Performance and scalability improvements
833 v0.99.2 - 18 Feb 2010
834 ---------------------
837 v0.99.1 - 25 Jan 2010
838 ---------------------
839 - Add support for sFlow(R)
840 - Make headers compatible with C++
843 v0.99.0 - 14 Jan 2010
844 ---------------------
845 - User-space forwarding engine
848 v0.90.7 - 29 Nov 2009
849 ---------------------
850 - Add support for NetFlow active timeouts
857 v0.90.5 - 21 Sep 2009
858 ---------------------
859 - Generalize in-band control to more diverse network setups
projects / cascardo / ovs.git / blob