3 - NSH implementation now conforms to latest draft (draft-ietf-sfc-nsh-28).
5 * New high-level documentation in ovsdb(7).
6 * New file format documentation for developers in ovsdb(5).
7 * Protocol documentation moved from ovsdb-server(1) to ovsdb-server(7).
8 * ovsdb-client: New "get-schema-cksum" command.
9 * ovsdb-client: New "backup" and "restore" commands.
10 * ovsdb-tool: New "db-name" and "schema-name" commands.
12 * The "requested-chassis" option for a logical switch port now accepts a
13 chassis "hostname" in addition to a chassis "name".
15 - Added support to send IPv6 Router Advertisement packets in response to
16 the IPv6 Router Solicitation packets from the VIF ports.
17 - Added support to generate Neighbor Solicitation packets using the OVN
18 action 'nd_ns' to resolve unknown next hop MAC addresses for the
20 * ovn-ctl: New commands run_nb_ovsdb and run_sb_ovsdb.
22 * Add support for compiling OVS with the latest Linux 4.13 kernel
23 - "flush-conntrack" in ovs-dpctl and ovs-appctl now accept a 5-tuple to
24 delete a specific connection tracking entry.
26 * Add support for DPDK v17.11
27 * Add support for vHost IOMMU
29 * Datapath IDs may now be specified as 0x1 (etc.) instead of 16 digits.
34 * ovs-ofctl can now accept and display port names in place of numbers. By
35 default it always accepts names and in interactive use it displays them;
36 use --names or --no-names to override. See ovs-ofctl(8) for details.
37 * "ovs-ofctl dump-flows" now accepts --no-stats to omit flow statistics.
38 - New ovs-dpctl command "ct-stats-show" to show connection tracking stats.
40 * Added support to set packet mark for tunnel endpoint using
41 `egress_pkt_mark` OVSDB option.
42 * When using Linux kernel datapath tunnels may be created using rtnetlink.
43 This will allow us to take advantage of new tunnel features without
44 having to make changes to the vport modules.
45 - EMC insertion probability is reduced to 1% and is configurable via
46 the new 'other_config:emc-insert-inv-prob' option.
48 * DPDK log messages redirected to OVS logging subsystem.
49 Log level can be changed in a usual OVS way using
50 'ovs-appctl vlog' commands for 'dpdk' module. Lower bound
51 still can be configured via extra arguments for DPDK EAL.
52 * dpdkvhostuser ports are marked as deprecated. They will be removed
53 in an upcoming release.
54 * Support for DPDK v17.05.1.
55 - IPFIX now provides additional counters:
56 * Total counters since metering process startup.
57 * Per-flow TCP flag counters.
58 * Multicast, broadcast, and unicast counters.
59 - New support for multiple VLANs (802.1ad or "QinQ"), including a new
60 "dot1q-tunnel" port VLAN mode.
61 - In ovn-vsctl and vtep-ctl, record UUIDs in commands may now be
62 abbreviated to 4 hex digits.
64 * Added NAT support for userspace datapath.
65 * Added FTP and TFTP support with NAT for userspace datapath.
66 * Experimental NSH (Network Service Header) support in userspace datapath.
68 * New built-in DNS support.
69 * IPAM for IPv4 can now exclude user-defined addresses from assignment.
70 * IPAM can now assign IPv6 addresses.
71 * Make the DHCPv4 router setting optional.
72 * Gratuitous ARP for NAT addresses on a distributed logical router.
73 * Allow ovn-controller SSL configuration to be obtained from vswitchd
75 * ovn-trace now has basic support for tracing distributed firewalls.
76 * In ovn-nbctl and ovn-sbctl, record UUIDs in commands may now be
77 abbreviated to 4 hex digits.
78 * "ovn-sbctl lflow-list" can now print OpenFlow flows that correspond
80 * Now uses OVSDB RBAC support to reduce impact of compromised hypervisors.
81 * Multiple chassis may now be specified for L3 gateways. When more than
82 one chassis is specified, OVN will manage high availability for that
84 * Add support for ACL logging.
85 * ovn-northd now has native support for active-standby high availability.
86 - Tracing with ofproto/trace now traces through recirculation.
88 * New support for role-based access control (see ovsdb-server(1)).
89 - New commands 'stp/show' and 'rstp/show' (see ovs-vswitchd(8)).
91 * All features required by OpenFlow 1.4 are now implemented, so
92 ovs-vswitchd now enables OpenFlow 1.4 by default (in addition to
94 * Increased support for OpenFlow 1.6 (draft).
95 * Bundles now support hashing by just nw_src or nw_dst.
96 * The "learn" action now supports a "limit" option (see ovs-ofctl(8)).
97 * The port status bit OFPPS_LIVE now reflects link aliveness.
98 * OpenFlow 1.5 packet-out is now supported.
99 * Support for OpenFlow 1.5 field packet_type and packet-type-aware
101 * Added generic encap and decap actions (EXT-382).
102 First supported use case is encap/decap for Ethernet.
103 * Added NSH (Network Service Header) support in userspace
104 Used generic encap and decap actions to implement encapsulation and
105 decapsulation of NSH header.
106 IETF NSH draft - https://datatracker.ietf.org/doc/draft-ietf-sfc-nsh/
107 * Conntrack state is only available to the processing path that
108 follows the "recirc_table" argument of the ct() action. Starting
109 in OVS 2.8, this state is now cleared for the current processing
110 path whenever ct() is called.
112 * OVN services are no longer restarted automatically after upgrade.
113 * ovs-vswitchd and ovsdb-server run as non-root users by default.
114 - Add --cleanup option to command 'ovs-appctl exit' (see ovs-vswitchd(8)).
116 * Use new tunnel port option "packet_type" to configure L2 vs. L3.
117 * In conjunction with PTAP tunnel ports can handle a mix of L2 and L3
119 * New vxlan tunnel extension "gpe" to support VXLAN-GPE tunnels.
120 * New support for non-Ethernet (L3) payloads in GRE and VXLAN-GPE.
121 - The BFD detection multiplier is now user-configurable.
122 - Add experimental support for hardware offloading
123 * HW offloading is disabled by default.
124 * HW offloading is done through the TC interface.
125 - IPv6 link local addresses are now supported on Linux. Use % to designate
129 ---------------------
130 - Utilities and daemons that support SSL now allow protocols and
131 ciphers to be configured with --ssl-protocols and --ssl-ciphers.
133 * QoS is now implemented via egress shaping rather than ingress policing.
134 * DSCP marking is now supported, via the new northbound QoS table.
135 * IPAM now supports fixed MAC addresses.
136 * Support for source IP address based routing.
138 - New --ovs option to also print OpenFlow flows.
139 - put_dhcp_opts and put_dhcp_optsv6 actions may now be traced.
140 * Support for managing SSL and remote connection configuration in
141 northbound and southbound databases.
142 * TCP connections to northbound and southbound databases are no
143 longer enabled by default and must be explicitly configured.
144 See documentation for ovn-sbctl/ovn-nbctl "set-connection"
145 command or the ovn-ctl "--db-sb-create-insecure-remote" and
146 "--db-nb-create-insecure-remote" command-line options for
147 information regarding remote connection configuration.
148 * New appctl "inject-pkt" command in ovn-controller that allows
149 packets to be injected into the connected OVS instance.
150 * Distributed logical routers may now be connected directly to
151 logical switches with localnet ports, by specifying a
152 "redirect-chassis" on the distributed gateway port of the
153 logical router. NAT rules may be specified directly on the
154 distributed logical router, and are handled either centrally on
155 the "redirect-chassis", or in many cases are handled locally on
156 the hypervisor where the corresponding logical port resides.
157 Gratuitous ARP for NAT addresses on a distributed logical
158 router is not yet supported, but will be added in a future
160 - Fixed regression in table stats maintenance introduced in OVS
161 2.3.0, wherein the number of OpenFlow table hits and misses was
164 * OFPT_PACKET_OUT messages are now supported in bundles.
165 * A new "selection_method=dp_hash" type for OpenFlow select group
166 bucket selection that uses the datapath computed 5-tuple hash
167 without making datapath flows match the 5-tuple fields, which
168 is useful for more efficient load balancing, for example. This
169 uses the Netronome extension to OpenFlow 1.5+ that allows
170 control over the OpenFlow select groups selection method. See
171 "selection_method" and related options in ovs-ofctl(8) for
173 * The "sample" action now supports "ingress" and "egress" options.
174 * The "ct" action now supports the TFTP ALG where support is available.
175 * New actions "clone" and "ct_clear".
176 * The "meter" action is now supported in the userspace datapath.
178 * 'bundle' command now supports packet-out messages.
179 * New syntax for 'ovs-ofctl packet-out' command, which uses the
180 same string parser as the 'bundle' command. The old 'packet-out'
181 syntax is deprecated and will be removed in a later OVS
183 * New unixctl "ofctl/packet-out" command, which can be used to
184 instruct a flow monitor to issue OpenFlow packet-out messages.
186 * Remote connections can now be made read-only (see ovsdb-server(1)).
188 * TLV mappings for protocols such as Geneve are now segregated on
189 a per-OpenFlow bridge basis rather than globally. (The interface
191 * Removed support for IPsec tunnels.
193 * New option 'n_rxq_desc' and 'n_txq_desc' fields for DPDK interfaces
194 which set the number of rx and tx descriptors to use for the given port.
195 * Support for DPDK v16.11.
196 * Support for rx checksum offload. Refer DPDK HOWTO for details.
197 * Port Hotplug is now supported.
198 * DPDK physical ports can now have arbitrary names. The PCI address of
199 the device must be set using the 'dpdk-devargs' option. Compatibility
200 with the old dpdk<portid> naming scheme is broken, and as such a
201 device will not be available for use until a valid dpdk-devargs is
203 * Virtual DPDK Poll Mode Driver (vdev PMD) support.
204 * Removed experimental tag.
206 * A package upgrade does not automatically restart OVS service.
207 - ovs-vswitchd/ovs-vsctl:
208 * Ports now have a "protected" flag. Protected ports can not forward
209 frames to other protected ports. Unprotected ports can receive and
210 forward frames to protected and other unprotected ports.
211 - ovs-vsctl, ovn-nbctl, ovn-sbctl, vtep-ctl:
212 * Database commands now accept integer ranges, e.g. "set port
213 eth0 trunks=1-10" to enable trunking VLANs 1 to 10.
216 ---------------------
217 - First supported release of OVN. See ovn-architecture(7) for more
220 * New "monitor_cond" "monitor_cond_update" and "update2" extensions to
223 * OpenFlow 1.3+ bundles now expire after 10 seconds since the
224 last time the bundle was either opened, modified, or closed.
225 * OpenFlow 1.3 Extension 230, adding OpenFlow Bundles support, is
227 * OpenFlow 1.3+ bundles are now supported for group mods as well as
228 flow mods and port mods. Both 'atomic' and 'ordered' bundle
229 flags are supported for group mods as well as flow mods.
230 * Internal OpenFlow rule representation for load and set-field
231 actions is now much more memory efficient. For a complex flow
232 table this can reduce rule memory consumption by 40%.
233 * Bundles are now much more memory efficient than in OVS 2.5.
234 Together with memory efficiency improvements in OpenFlow rule
235 representation, the peak OVS resident memory use during a
236 bundle commit for large complex set of flow mods can be only
237 25% of that in OVS 2.5 (4x lower).
238 * OpenFlow 1.1+ OFPT_QUEUE_GET_CONFIG_REQUEST now supports OFPP_ANY.
239 * OpenFlow 1.4+ OFPMP_QUEUE_DESC is now supported.
240 * OpenFlow 1.4+ OFPT_TABLE_STATUS is now supported.
241 * New property-based packet-in message format NXT_PACKET_IN2 with support
242 for arbitrary user-provided data and for serializing flow table
243 traversal into a continuation for later resumption.
244 * New extension message NXT_SET_ASYNC_CONFIG2 to allow OpenFlow 1.4-like
245 control over asynchronous messages in earlier versions of OpenFlow.
246 * New OpenFlow extension NXM_NX_MPLS_TTL to provide access to MPLS TTL.
247 * New output option, output(port=N,max_len=M), to allow truncating a
248 packet to size M bytes when outputting to port N.
249 * New command OFPGC_ADD_OR_MOD for OFPT_GROUP_MOD message that adds a
250 new group or modifies an existing groups
251 * The optional OpenFlow packet buffering feature is deprecated in
252 this release, and will be removed in the next OVS release
253 (2.7). After the change OVS always sends the 'buffer_id' as
254 0xffffffff in packet-in messages and will send an error
255 response if any other value of this field is included in
256 packet-out and flow mod sent by a controller. Controllers are
257 already expected to work properly in cases where the switch can
258 not buffer packets, so this change should not affect existing
260 * New OpenFlow extension NXT_CT_FLUSH_ZONE to flush conntrack zones.
261 - Improved OpenFlow version compatibility for actions:
262 * New OpenFlow extension to support the "group" action in OpenFlow 1.0.
263 * OpenFlow 1.0 "enqueue" action now properly translated to OpenFlow 1.1+.
264 * OpenFlow 1.1 "mod_nw_ecn" and OpenFlow 1.1+ "mod_nw_ttl" actions now
265 properly translated to OpenFlow 1.0.
267 * queue-get-config command now allows a queue ID to be specified.
268 * '--bundle' option can now be used with OpenFlow 1.3 and with group mods.
269 * New "bundle" command allows executing a mixture of flow and group mods
270 as a single atomic transaction.
271 * New option "--color" to produce colorized output for some commands.
272 * New option '--may-create' to use OFPGC_ADD_OR_MOD in mod-group command.
274 * New "sampling_port" option for "sample" action to allow sampling
275 ingress and egress tunnel metadata with IPFIX.
276 * New ovs-ofctl commands "dump-ipfix-bridge" and "dump-ipfix-flow" to
277 dump bridge IPFIX statistics and flow based IPFIX statistics.
278 * New setting other-config:virtual_obs_id to add an arbitrary string
281 * OVS Linux datapath now implements Conntrack NAT action with all
282 supported Linux kernels.
283 * Support for truncate action.
284 * New QoS type "linux-noop" that prevents Open vSwitch from trying to
285 manage QoS for a given port (useful when other software manages QoS).
287 * New option "n_rxq" for PMD interfaces.
288 Old 'other_config:n-dpdk-rxqs' is no longer supported.
289 Not supported by vHost interfaces. For them number of rx and tx queues
290 is applied from connected virtio device.
291 * New 'other_config:pmd-rxq-affinity' field for PMD interfaces, that
292 allows to pin port's rx queues to desired cores.
293 * New appctl command 'dpif-netdev/pmd-rxq-show' to check the port/rxq
295 * Type of log messages from PMD threads changed from INFO to DBG.
296 * QoS functionality with sample egress-policer implementation.
297 * The mechanism for configuring DPDK has changed to use database
298 * Sensible defaults have been introduced for many of the required
299 configuration options
300 * DB entries have been added for many of the DPDK EAL command line
301 arguments. Additional arguments can be passed via the dpdk-extra
303 * Add ingress policing functionality.
304 * PMD threads servicing vHost User ports can now come from the NUMA
305 node that device memory is located on if CONFIG_RTE_LIBRTE_VHOST_NUMA
307 * Basic connection tracking for the userspace datapath (no ALG,
308 fragmentation or NAT support yet)
309 * Support for DPDK 16.07
310 * Optional support for DPDK pdump enabled.
311 * Jumbo frame support
312 * Remove dpdkvhostcuse port type.
313 * OVS client mode for vHost and vHost reconnect (Requires QEMU 2.7)
314 * 'dpdkvhostuserclient' port type.
315 - Increase number of registers to 16.
316 - ovs-benchmark: This utility has been removed due to lack of use and
319 * New "vlog/close" command.
321 * Added the ability to selectively start the forwarding and database
322 functions (ovs-vswitchd and ovsdb-server, respectively).
324 * Remove max number of sessions limit, to enable connection scaling
327 * Added support for Python 3.4+ in addition to existing support
330 * Introduced SELinux policy package.
331 - Datapath Linux kernel compatibility.
332 * Dropped support for kernel older than 3.10.
333 * Removed VLAN splinters feature.
334 * Datapath supports kernel upto 4.7.
336 * Flow based tunnel match and action can be used for IPv6 address using
337 tun_ipv6_src, tun_ipv6_dst fields.
338 * Added support for IPv6 tunnels, for details checkout FAQ.
339 * Deprecated support for IPsec tunnels ports.
340 - A wrapper script, 'ovs-tcpdump', to easily port-mirror an OVS port and
342 - Introduce --no-self-confinement flag that allows daemons to work with
343 sockets outside their run directory.
344 - ovs-pki: Changed message digest algorithm from SHA-1 to SHA-512 because
345 SHA-1 is no longer secure and some operating systems have started to
346 disable it in OpenSSL.
347 - Add 'mtu_request' column to the Interface table. It can be used to
348 configure the MTU of the ports.
351 - Using openvswitch module in conjunction with upstream Linux tunnels:
352 * When using the openvswitch module distributed with OVS against kernel
353 versions 4.4 to 4.6, the openvswitch module cannot be loaded or used at
354 the same time as "ip_gre".
355 - Conntrack FTP ALGs: When using the openvswitch module distributed with
356 OVS, particular Linux distribution kernels versions may provide diminished
357 functionality. This typically affects active FTP data connections when
358 using "actions=ct(alg=ftp),..." in flow tables. Specifically:
359 * Centos 7.1 kernels (3.10.0-2xx) kernels are unable to correctly set
360 up expectations for FTP data connections in multiple zones,
361 eg "actions=ct(zone=1,alg=ftp),ct(zone=2,alg=ftp),...". Executing the
362 "ct" action for subsequent data connections may fail to determine that
363 the data connection is "related" to an existing connection.
364 * Centos 7.2 kernels (3.10.0-3xx) kernels may not establish FTP ALG state
365 correctly for NATed connections. As a result, flows that perform NAT,
366 eg "actions=ct(nat,ftp=alg,table=1),..." may fail to NAT the packet,
367 and will populate the "ct_state=inv" bit in the flow.
371 ---------------------
372 - Dropped support for Python older than version 2.7. As a consequence,
373 using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
374 have Python 2.4) requires first installing Python 2.7.
376 * Group chaining (where one OpenFlow group triggers another) is
378 * OpenFlow 1.4+ "importance" is now considered for flow eviction.
379 * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
380 * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
381 * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
382 * Allow modifying the ICMPv4/ICMPv6 type and code fields.
383 * OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG are
386 * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
388 * Geneve tunnels can now match and set options and the OAM bit.
389 * The nonstandard GRE64 tunnel extension has been dropped.
390 - Support Multicast Listener Discovery (MLDv1 and MLDv2).
391 - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
392 - sFlow agent now reports tunnel and MPLS structures.
393 - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
394 targets to run a new system testsuite. These tests can be run inside
395 a Vagrant box. See INSTALL.md for details
396 - Mark --syslog-target argument as deprecated. It will be removed in
397 the next OVS release.
398 - Added --user option to all daemons
399 - Add support for connection tracking through the new "ct" action
400 and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
401 available on Linux kernels with the connection tracking module loaded.
402 - Add experimental version of OVN. OVN, the Open Virtual Network, is a
403 system to support virtual network abstraction. OVN complements the
404 existing capabilities of OVS to add native support for virtual network
405 abstractions, such as virtual L2 and L3 overlays and security groups.
407 * DPDK ports may now be created via network scripts (see README.RHEL).
410 * Added multiqueue support to vhost-user
411 * Note: QEMU 2.5+ required for multiqueue support
414 ---------------------
415 - Flow table modifications are now atomic, meaning that each packet
416 now sees a coherent version of the OpenFlow pipeline. For
417 example, if a controller removes all flows with a single OpenFlow
418 "flow_mod", no packet sees an intermediate version of the OpenFlow
419 pipeline where only some of the flows have been deleted.
420 - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
421 - Add bash command-line completion support for ovs-vsctl Please check
422 utilities/ovs-command-compgen.INSTALL.md for how to use.
423 - The MAC learning feature now includes per-port fairness to mitigate
424 MAC flooding attacks.
425 - New support for a "conjunctive match" OpenFlow extension, which
426 allows constructing OpenFlow matches of the form "field1 in
427 {a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
428 see documentation for the "conjunction" action in ovs-ofctl(8).
429 - Add bash command-line completion support for ovs-appctl/ovs-dpctl/
430 ovs-ofctl/ovsdb-tool commands. Please check
431 utilities/ovs-command-compgen.INSTALL.md for how to use.
432 - The "learn" action supports a new flag "delete_learned" that causes
433 the learned flows to be deleted when the flow with the "learn" action
435 - Basic support for the Geneve tunneling protocol. It is not yet
436 possible to generate or match options. This is planned for a future
437 release. The protocol is documented at
438 http://tools.ietf.org/html/draft-gross-geneve-00
439 - The OVS database now reports controller rate limiting statistics.
440 - sflow now exports information about LACP-based bonds, port names, and
441 OpenFlow port numbers, as well as datapath performance counters.
442 - ovs-dpctl functionality is now available for datapaths integrated
443 into ovs-vswitchd, via ovs-appctl. Some existing ovs-appctl
444 commands are now redundant and will be removed in a future
445 release. See ovs-vswitchd(8) for details.
447 * OpenFlow 1.4 bundles are now supported for flow mods and port
448 mods. For flow mods, both 'atomic' and 'ordered' bundle flags
449 are trivially supported, as all bundled messages are executed
450 in the order they were added and all flow table modifications
451 are now atomic to the datapath. Port mods may not appear in
452 atomic bundles, as port status modifications are not atomic.
453 * IPv6 flow label and neighbor discovery fields are now modifiable.
454 * OpenFlow 1.5 extended registers are now supported.
455 * The OpenFlow 1.5 actset_output field is now supported.
456 * OpenFlow 1.5 Copy-Field action is now supported.
457 * OpenFlow 1.5 masked Set-Field action is now supported.
458 * OpenFlow 1.3+ table features requests are now supported (read-only).
459 * Nicira extension "move" actions may now be included in action sets.
460 * "resubmit" actions may now be included in action sets. The resubmit
461 is executed last, and only if the action set has no "output" or "group"
463 * OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
464 * A new Netronome extension to OpenFlow 1.5+ allows control over the
465 fields hashed for OpenFlow select groups. See "selection_method" and
466 related options in ovs-ofctl(8) for details.
467 - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
468 ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
469 use an OpenFlow 1.4 bundle to operate the modifications as a single
470 atomic transaction. If any of the flow mods in a transaction fail, none
471 of them are executed. All flow mods in a bundle appear to datapath
472 lookups simultaneously.
473 - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
474 mods as an input by allowing the flow specification to start with an
475 explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
476 keyword. A missing keyword is treated as 'add', so this is fully
477 backwards compatible. With the new '--bundle' option all the flow mods
478 are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
479 - ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
480 MD5 is no longer secure and some operating systems have started to disable
482 - ovsdb-server: New OVSDB protocol extension allows inequality tests on
483 "optional scalar" columns. See ovsdb-server(1) for details.
484 - ovs-vsctl now permits immutable columns in a new row to be modified in
485 the same transaction that creates the row.
486 - test-controller has been renamed ovs-testcontroller at request of users
487 who find it useful for testing basic OpenFlow setups. It is still not
488 a necessary or desirable part of most Open vSwitch deployments.
489 - Support for travis-ci.org based continuous integration builds has been
490 added. Build failures are reported to build@openvswitch.org. See INSTALL.md
491 file for additional details.
492 - Support for the Rapid Spanning Tree Protocol (IEEE 802.1D-2004).
493 The implementation has been tested successfully against the Ixia Automated
494 Network Validation Library (ANVL).
495 - Stats are no longer updated on fake bond interface.
496 - Keep active bond slave selection across OVS restart.
497 - A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
498 containers. If and when there is a native integration of Open vSwitch
499 with Docker, the wrapper script will be retired.
500 - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
501 protocols. This is generic tunneling mechanism for userspace datapath.
502 - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
503 - Support for Linux kernels up to 4.0.x
504 - The documentation now use the term 'destination' to mean one of syslog,
505 console or file for vlog logging instead of the previously used term
507 - Support for VXLAN Group Policy extension
508 - Initial support for the IETF Auto-Attach SPBM draft standard. This
509 contains rudimentary support for the LLDP protocol as needed for
511 - The default OpenFlow and OVSDB ports are now the IANA-assigned
512 numbers. OpenFlow is 6653 and OVSDB is 6640.
513 - Support for DPDK vHost.
514 - Support for outer UDP checksums in Geneve and VXLAN.
515 - The kernel vports with dependencies are no longer part of the overall
516 openvswitch.ko but built and loaded automatically as individual kernel
517 modules (vport-*.ko).
518 - Support for STT tunneling.
519 - ovs-sim: New developer tool for simulating multiple OVS instances.
520 See ovs-sim(1) for more information.
521 - Support to configure method (--syslog-method argument) that determines
522 how daemons will talk with syslog.
523 - Support for "ovs-appctl vlog/list-pattern" command that lets to query
524 logging message format for each destination.
528 ---------------------
529 - OpenFlow 1.1, 1.2, and 1.3 are now enabled by default in
531 - Linux kernel datapath now has an exact match cache optimizing the
532 flow matching process.
533 - Datapath flows now have partially wildcarded tranport port field
534 matches. This reduces userspace upcalls, but increases the
535 number of different masks in the datapath. The kernel datapath
536 exact match cache removes the overhead of matching the incoming
537 packets with the larger number of masks, but when paired with an
538 older kernel module, some workloads may perform worse with the
540 - Compatibility with autoconf 2.63 (previously >=2.64)
542 v2.2.0 - Internal Release
543 ---------------------
544 - Internal ports are no longer brought up by default, because it
545 should be an administrator task to bring up devices as they are
547 - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
549 - Port creation and configuration errors are now stored in a new error
550 column of the Interface table and included in 'ovs-vsctl show'.
551 - The "ovsdbmonitor" graphical tool has been removed, because it was
552 poorly maintained and not widely used.
553 - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
554 controllers against Open vSwitch. See INSTALL.md for details.
555 - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
556 - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
557 log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
559 - Support for Linux kernels up to 3.14. From Kernel 3.12 onwards OVS uses
560 tunnel API for GRE and VXLAN.
561 - Added DPDK support.
562 - Added support for custom vlog patterns in Python
566 ---------------------
567 - Address prefix tracking support for flow tables. New columns
568 "prefixes" in OVS-DB table "Flow_Table" controls which packet
569 header fields are used for address prefix tracking. Prefix
570 tracking allows the classifier to skip rules with longer than
571 necessary prefixes, resulting in better wildcarding for datapath
572 flows. Default configuration is to not use any fields for prefix
573 tracking. However, if any flow tables contain both exact matches
574 and masked matches for IP address fields, OVS performance may be
575 increased by using this feature.
576 * As of now, the fields for which prefix lookup can be enabled
577 are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
578 aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
579 (Using this feature for 'tun_id' would only make sense if the
580 tunnel IDs have prefix structure similar to IP addresses.)
581 * There is a maximum number of fields that can be enabled for any
582 one flow table. Currently this limit is 3.
584 $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
585 --id=@N1 create Flow_Table name=table0
586 $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
587 --id=@N1 create Flow_Table name=table1
588 $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
589 $ ovs-vsctl set Flow_Table table1 prefixes=[]
590 - TCP flags matching: OVS now supports matching of TCP flags. This
591 has an adverse performance impact when using OVS userspace 1.10
592 or older (no megaflows support) together with the new OVS kernel
593 module. It is recommended that the kernel and userspace modules
594 both are upgraded at the same time.
595 - The default OpenFlow and OVSDB ports will change to
596 IANA-assigned numbers in a future release. Consider updating
597 your installations to specify port numbers instead of using the
600 * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
601 * OVS limits the OpenFlow port numbers it assigns to port 32767 and
602 below, leaving port numbers above that range free for assignment
604 * ovs-vswitchd now honors changes to the "ofport_request" column
605 in the Interface table by changing the port's OpenFlow port
607 * The Open vSwitch software switch now supports OpenFlow groups.
608 - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
609 diagram only if graphviz package was installed at the build time.
610 - Support for Linux kernels up to 3.11
612 The "show" command also displays mega flow mask stats.
614 * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
615 - ovs-controller has been renamed test-controller. It is no longer
616 packaged or installed by default, because too many users assumed
617 incorrectly that ovs-controller was a necessary or desirable part
618 of an Open vSwitch deployment.
619 - Added vlog option to export to a UDP syslog sink.
621 * The "monitor" command can now monitor all tables in a database,
622 instead of being limited to a single table.
623 - The flow-eviction-threshold has been replaced by the flow-limit which is a
624 hard limit on the number of flows in the datapath. It defaults to 200,000
625 flows. OVS automatically adjusts this number depending on network
627 - Added IPv6 support for active and passive socket communications.
631 ---------------------
632 - The ovs-vswitchd process is no longer single-threaded. Multiple
633 threads are now used to handle flow set up and asynchronous
636 * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
637 1.3, which had experimental support in 1.10).
638 * Experimental protocol support for OpenFlow 1.1+ groups. This
639 does not yet include an implementation in the Open vSwitch
641 * Experimental protocol support for OpenFlow 1.2+ meters. This
642 does not yet include an implementation in the Open vSwitch
644 * New support for matching outer source and destination IP address
645 of tunneled packets, for tunnel ports configured with the newly
646 added "remote_ip=flow" and "local_ip=flow" options.
647 * Support for matching on metadata 'pkt_mark' for interacting with
648 other system components. On Linux this corresponds to the skb
650 * Support matching, rewriting SCTP ports
651 - The Interface table in the database has a new "ifindex" column to
652 report the interface's OS-assigned ifindex.
653 - New "check-oftest" Makefile target for running OFTest against Open
654 vSwitch. See README-OFTest for details.
655 - The flow eviction threshold has been moved to the Open_vSwitch table.
656 - Database names are now mandatory when specifying ovsdb-server options
657 through database paths (e.g. Private key option with the database name
658 should look like "--private-key=db:Open_vSwitch,SSL,private_key").
659 - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
660 - Support for Linux kernels up to 3.10
662 * New "ofp-parse" for printing OpenFlow messages read from a file.
663 * New commands for OpenFlow 1.1+ groups.
664 - Added configurable flow caching support to IPFIX exporter.
665 - Dropped support for Linux pre-2.6.32.
666 - Log file timestamps and ovsdb commit timestamps are now reported
667 with millisecond resolution. (Previous versions only reported
671 v1.11.0 - 28 Aug 2013
672 ---------------------
673 - Support for megaflows, which allows wildcarding in the kernel (and
674 any dpif implementation that supports wildcards). Depending on
675 the flow table and switch configuration, flow set up rates are
676 close to the Linux bridge.
677 - The "tutorial" directory contains a new tutorial for some advanced
678 Open vSwitch features.
679 - Stable bond mode has been removed.
680 - The autopath action has been removed.
681 - New support for the data encapsulation format of the LISP tunnel
682 protocol (RFC 6830). An external control plane or manual flow
683 setup is required for EID-to-RLOC mapping.
685 * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
686 1.1 and later are now implemented.
687 * New "stack" extension for use in actions, to push and pop from
689 * The "load" and "set_field" actions can now modify the "in_port". (This
690 allows one to enable output to a flow's input port by setting the
691 in_port to some unused value, such as OFPP_NONE.)
693 * New debugging commands "add-flow", "mod-flow", "del-flow".
694 * "dump-flows" now has a -m option to increase output verbosity.
695 - In dpif-based bridges, cache action translations, which can improve
696 flow set up performance by 80% with a complicated flow table.
697 - New syslog format, prefixed with "ovs|", to be easier to filter.
698 - RHEL: Removes the default firewall rule that allowed GRE traffic to
699 pass through. Any users that relied on this automatic firewall hole
700 will have to manually configure it. The ovs-ctl(8) manpage documents
701 the "enable-protocol" command that can be used as an alternative.
702 - New CFM demand mode which uses data traffic to indicate interface
705 v1.10.0 - 01 May 2013
706 ---------------------
707 - Bridge compatibility support has been removed. Any uses that
708 rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
709 or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
711 - The maximum size of the MAC learning table is now configurable.
712 - With the Linux datapath, packets for new flows are now queued
713 separately on a per-port basis, so it should no longer be
714 possible for a large number of new flows arriving on one port to
715 prevent new flows from being processed on other ports.
717 * Previously ovs-vsctl would retry connecting to the database forever,
718 causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
719 only tries once by default (use --retry to try forever). This change
720 means that you may want to remove uses of --timeout to avoid hangs
722 * Many "ovs-vsctl" database commands now accept an --if-exists option.
723 Please refer to the ovs-vsctl manpage for details.
725 - Experimental support for newer versions of OpenFlow. See
726 the "What versions of OpenFlow does Open vSwitch support?"
727 question in the FAQ for more details.
728 - The OpenFlow "dp_desc" may now be configured by setting the
729 value of other-config:dp-desc in the Bridge table.
730 - It is possible to request the OpenFlow port number with the
731 "ofport_request" column in the Interface table.
732 - The NXM flow_removed message now reports the OpenFlow table ID
733 from which the flow was removed.
735 - New support for the VXLAN tunnel protocol (see the IETF draft here:
736 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
737 - Tunneling requires the version of the kernel module paired with
738 Open vSwitch 1.9.0 or later.
739 - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
740 is no longer supported.
741 - Path MTU discovery is no longer supported.
742 - CAPWAP tunneling support removed.
743 - Tunnels with multicast destination ports are no longer supported.
745 - The "dump-flows" and "del-flows" no longer require an argument
746 if only one datapath exists.
748 - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
749 commands available allow control over logging rate limits.
750 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
751 that mimic the equivalent ovs-dpctl commands.
752 - The ofproto library is now responsible for assigning OpenFlow port
753 numbers. An ofproto implementation should assign them when
754 port_construct() is called.
755 - All dpif-based bridges of a particular type share a common
756 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
757 commands will now return information on that shared datapath. To
758 get the equivalent bridge-specific information, use the new
759 "ovs-appctl dpif/*" commands.
760 - Backward-incompatible changes:
761 - Earlier Open vSwitch versions treated ANY as a wildcard in flow
762 syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
763 conflict. ANY was rarely used in flow syntax, so we chose to
764 retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
765 - Patch ports no longer require kernel support, so they now work
766 with FreeBSD and the kernel module built into Linux 3.3 and later.
767 - New "sample" action.
771 ------------------------
773 - Support for ipv6 set action.
774 - SKB mark matching and setting.
775 - support for Linux kernels up to 3.8
776 - FreeBSD is now a supported platform, thanks to code contributions from
777 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
778 - ovs-bugtool: New --ovs option to report only OVS related information.
779 - New %t and %T log escapes to identify the subprogram within a
780 cooperating group of processes or threads that emitted a log message.
781 The default log patterns now include this information.
783 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
784 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
785 - Adds support for writing to the metadata field for a flow.
787 - The tunneling code no longer assumes input and output keys are
788 symmetric. If they are not, PMTUD needs to be disabled for
789 tunneling to work. Note this only applies to flow-based keys.
790 - New support for a nonstandard form of GRE that supports a 64-bit key.
791 - Tunnel Path MTU Discovery default value was set to 'disabled'.
792 This feature is deprecated and will be removed soon.
793 - Tunnel header caching removed.
795 - Commands and actions that accept port numbers now also accept keywords
796 that represent those ports (such as LOCAL, NONE, and ALL). This is
797 also the recommended way to specify these ports, for compatibility
798 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
799 for these ports for different purposes).
801 - Support requesting the port number with the "port_no" option in
802 the "add-if" command.
803 - ovs-pki: The "online PKI" features have been removed, along with
804 the ovs-pki-cgi program that facilitated it, because of some
805 alarmist insecurity claims. We do not believe that these claims
806 are true, but because we do not know of any users for this
807 feature it seems better on balance to remove it. (The ovs-pki-cgi
808 program was not included in distribution packaging.)
809 - ovsdb-server now enforces the immutability of immutable columns. This
810 was not enforced in earlier versions due to an oversight.
811 - The following features are now deprecated. They will be removed no
812 earlier than February 2013. Please email dev@openvswitch.org with
814 - Bridge compatibility.
816 - The autopath action.
817 - Interface type "null".
818 - Numeric values for reserved ports (see "ovs-ofctl" note above).
819 - Tunnel Path MTU Discovery.
820 - CAPWAP tunnel support.
821 - The data in the RARP packets can now be matched in the same way as the
826 ------------------------
827 *** Internal only release ***
828 - New FAQ. Please send updates and additions!
829 - Authors of controllers, please read the new section titled "Action
830 Reproduction" in DESIGN, which describes an Open vSwitch change in
831 behavior in corner cases that may affect some controllers.
833 - A new test utility that can create L3 tunnel between two Open
834 vSwitches and detect connectivity issues.
836 - New --sort and --rsort options for "dump-flows" command.
837 - "mod-port" command can now control all OpenFlow config flags.
839 - Allow general bitwise masking for IPv4 and IPv6 addresses in
840 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
842 - Allow support for arbitrary Ethernet masks. (Previously, only
843 the multicast bit in the destination address could be individually
845 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
846 - The OFPST_QUEUE request now reports an error if a specified port or
847 queue does not exist, or for requests for a specific queue on all
848 ports, if the specified queue does not exist on any port. (Previous
849 versions generally reported an empty set of results.)
850 - New "flow monitor" feature to allow controllers to be notified of
851 flow table changes as they happen.
852 - Additional protocols are not mirrored and dropped when forward-bpdu is
853 false. For a full list, see the ovs-vswitchd.conf.db man page.
854 - Open vSwitch now sends RARP packets in situations where it previously
855 sent a custom protocol, making it consistent with behavior of QEMU and
857 - All Open vSwitch programs and log files now show timestamps in UTC,
858 instead the local timezone, by default.
862 ------------------------
863 - kernel modules are renamed. openvswitch_mod.ko is now
864 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
865 - Increased the number of NXM registers to 8.
866 - Added ability to configure DSCP setting for manager and controller
867 connections. By default, these connections have a DSCP value of
868 Internetwork Control (0xc0).
869 - Added the granular link health statistics, 'cfm_health', to an
872 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
873 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
876 - Added the "dump-ports-desc" command to retrieve port
877 information using the new port description multipart messages.
879 - Added support for spawning ovs-test server from the client.
880 - Now ovs-test is able to automatically create test bridges and ports.
881 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
882 - Tripled flow setup performance.
883 - The "coverage/log" command previously available through ovs-appctl
884 has been replaced by "coverage/show". The new command replies with
885 coverage counter values, instead of logging them.
889 ------------------------
890 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
894 ------------------------
895 *** Internal only release ***
897 - LACP bonds no longer fall back to balance-slb when negotiations fail.
898 Instead they drop traffic.
899 - The default bond_mode changed from SLB to active-backup, to protect
900 unsuspecting users from the significant risks of SLB bonds (which are
901 documented in vswitchd/INTERNALS).
902 - Load balancing can be disabled by setting the bond-rebalance-interval
905 - Added support for bitwise matching on TCP and UDP ports.
906 See ovs-ofctl(8) for more information.
907 - NXM flow dumps now include times elapsed toward idle and hard
909 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
910 controllers more precise control over which OpenFlow messages they
911 receive asynchronously.
912 - New "fin_timeout" action.
913 - Added "fin_timeout" support to "learn" action.
914 - New Nicira action NXAST_CONTROLLER that offers additional features
915 over output to OFPP_CONTROLLER.
916 - When QoS settings for an interface do not configure a default queue
917 (queue 0), Open vSwitch now uses a default configuration for that
918 queue, instead of dropping all packets as in previous versions.
920 - Logging to console and file will have UTC timestamp as a default for
921 all the daemons. An example of the default format is
922 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
924 - The syntax of commands and options to set log levels was simplified,
925 to make it easier to remember.
926 - New support for limiting the number of flows in an OpenFlow flow
927 table, with configurable policy for evicting flows upon
928 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
929 for more information.
930 - New "enable-async-messages" column in the Controller table. If set to
931 false, OpenFlow connections to the controller will initially have all
932 asynchronous messages disabled, overriding normal OpenFlow behavior.
933 - ofproto-provider interface:
934 - "struct rule" has a new member "used" that ofproto implementations
935 should maintain by updating with ofproto_rule_update_used().
937 - The new option --timestamp causes the "monitor" command to print
938 a timestamp with every update.
939 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
943 ------------------------
945 - Added support for querying, modifying, and deleting flows
946 based on flow cookie when using NXM.
947 - Added new NXM_PACKET_IN format.
948 - Added new NXAST_DEC_TTL action.
950 - Added daemonization support to the monitor and snoop commands.
952 - The "find" command supports new set relational operators
953 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
954 - ovsdb-tool now uses the typical database and schema installation
955 directories as defaults.
956 - The default MAC learning timeout has been increased from 60 seconds
957 to 300 seconds. The MAC learning timeout is now configurable.
961 ------------------------
962 - Compatible with Open vSwitch kernel module included in Linux 3.3.
963 - New "VLAN splinters" feature to work around buggy device drivers
964 in old Linux versions. (This feature is deprecated. When
965 broken device drivers are no longer in widespread use, we will
966 delete this feature.) See ovs-vswitchd.conf.db(5) for more
969 - Added ability to match on IPv6 flow label through NXM.
970 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
971 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
972 - Added ability to modify ECN bits in IPv4.
973 - Added ability to modify TTL in IPv4.
975 - Don't require the "normal" action to use mirrors. Traffic will
976 now be properly mirrored for any flows, regardless of their
978 - Track packet and byte statistics sent on mirrors.
979 - The sFlow implementation can now usually infer the correct agent
980 device instead of having to be told explicitly.
982 - New "fdb/flush" command to flush bridge's MAC learning table.
984 - A new distributed testing tool that allows one to diagnose performance
985 and connectivity issues. This tool currently is not included in RH or
987 - RHEL packaging now supports integration with Red Hat network scripts.
989 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
990 to active-backup. SLB bonds carry significant risks with them
991 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
992 users from running into. Users are advised to update any scripts or
993 configuration which may be negatively impacted by explicitly setting
994 the bond mode which they want to use.
998 ------------------------
1000 - Added an OpenFlow extension which allows the "output" action to accept
1002 - Added an OpenFlow extension for flexible learning.
1003 - Bumped number of NXM registers from four to five.
1005 - New "version" command to determine version of running daemon.
1006 - If no argument is provided for "cfm/show", displays detailed
1007 information about all interfaces with CFM enabled.
1008 - If no argument is provided for "lacp/show", displays detailed
1009 information about all ports with LACP enabled.
1011 - New "set-if" command to modify a datapath port's configuration.
1013 - The software switch now supports 255 OpenFlow tables, instead
1014 of just one. By default, only table 0 is consulted, but the
1015 new NXAST_RESUBMIT_TABLE action can look up in additional
1016 tables. Tables 128 and above are reserved for use by the
1017 switch itself; please use only tables 0 through 127.
1018 - Add support for 802.1D spanning tree (STP).
1019 - Fragment handling extensions:
1020 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
1021 fields are made available for matching in fragments with
1023 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
1024 via "ip_frag" in ovs-ofctl).
1025 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
1026 fragment handling policy.
1027 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
1028 By default it remains compatible with the old version and other
1029 standards-based implementations.
1030 - Flow setups are now processed in a round-robin manner across ports
1031 to prevent any single client from monopolizing the CPU and conducting
1032 a denial of service attack.
1033 - Added support for native VLAN tagging. A new "vlan_mode"
1034 parameter can be set for "port". Possible values: "access",
1035 "trunk", "native-tagged" and "native-untagged".
1036 - test-openflowd has been removed. Please use ovs-vswitchd instead.
1038 v1.2.0 - 03 Aug 2011
1039 ------------------------
1040 - New "ofproto" abstraction layer to ease porting to hardware
1042 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
1043 - Datapath support for Linux kernels up to 3.0.
1045 - New "bundle" and "bundle_load" action extensions.
1047 - Implement table unique constraints.
1048 - Support cooperative locking between callers.
1050 - New "-s" option for "show" command prints packet and byte
1051 counters for each port.
1053 - New "--readd" option for "replace-flows".
1055 - New "show" command to print an overview of configuration.
1056 - New "comment" command to add remark that explains intentions.
1057 - ovs-brcompatd has been rewritten to fix long-standing bugs.
1058 - ovs-openflowd has been renamed test-openflowd and moved into the
1059 tests directory. Its presence confused too many users. Please
1060 use ovs-vswitchd instead.
1061 - New ovs-benchmark utility to test flow setup performance.
1062 - A new log level "off" has been added. Configuring a log facility
1063 "off" prevents any messages from being logged to it. Previously,
1064 "emer" was effectively "off" because no messages were ever logged at
1065 level "emer". Now, errors that cause a process to exit are logged
1067 - "configure" option --with-l26 has been renamed --with-linux, and
1068 --with-l26-source has been renamed --with-linux-source. The old
1069 names will be removed after the next release, so please update
1071 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
1072 datapath/linux-2.6/compat-2.6 directories.
1074 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
1075 Please use the extensible match extensions instead.
1076 - Removed the Maintenance_Point and Monitor tables in an effort
1077 to simplify 802.1ag configuration.
1078 - Performance and scalability improvements
1081 v1.1.0 - 05 Apr 2011
1082 ------------------------
1083 - Ability to define policies over IPv6
1086 - Support for extensible match extensions to OpenFlow
1088 - Support for HFSC qdisc.
1089 - Queue used by in-band control can now be configured.
1091 - Kernel<->userspace interface has been reworked and should be
1092 close to a stable ABI now.
1093 - "Port group" concept has been dropped.
1094 - GRE over IPSEC tunnels
1096 - New active backup bonding mode.
1097 - New L4 hashing support when LACP is enabled.
1098 - Source MAC hash now includes VLAN field also.
1100 - Greatly improved handling of large flow tables
1102 - "show" command now prints full vport configuration.
1103 - "dump-groups" command removed since kernel support for
1104 port groups was dropped.
1106 - New commands for working with the new Managers table.
1107 - "list" command enhanced with new formatting options and --columns
1109 - "get" command now accepts new --id option.
1110 - New "find" command.
1112 - New "queue-stats" command for printing queue stats.
1113 - New commands "replace-flows" and "diff-flows".
1114 - Commands to add and remove flows can now read from files.
1115 - New --flow-format option to enable or disable NXM.
1116 - New --more option to increase OpenFlow message verbosity.
1117 - Removed "tun-cookie" command, which is no longer useful.
1118 - ovs-controller enhancements for testing various features.
1119 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
1120 bugs. New ovs-vlan-bug-workaround command for enabling and
1121 disabling a workaround for these driver bugs.
1123 - "Resubmit" actions now update flow statistics.
1124 - New "register" extension for use in matching and actions, via NXM.
1125 - New "multipath" experimental action extension.
1126 - New support for matching multicast Ethernet frames, via NXM.
1127 - New extension for OpenFlow vendor error codes.
1128 - New extension to set the QoS output queue without actually
1129 sending to an output port.
1130 - Open vSwitch now reports a single flow table, instead of
1131 separate hash and wildcard tables. This better models the
1132 current implementation.
1133 - New experimental "note" action.
1134 - New "ofproto/trace" ovs-appctl command and associated utilities
1135 to ease debugging complex flow tables.
1137 - Schema documentation now includes an entity-relationship diagram.
1138 - The database is now garbage collected. In most tables,
1139 unreferenced rows will be deleted automatically.
1140 - Many tables now include statistics updated periodically by
1141 ovs-vswitchd or ovsdb-server.
1142 - Every table now has an "external-ids" column for use by OVS
1144 - There is no default controller anymore. Each bridge must have its
1145 controller individually specified.
1146 - The "fail-mode" is now a property of a Bridge instead of a Controller.
1147 - New versioning and checksum features.
1148 - New Managers table and manager_options column in Open_vSwitch table
1149 for specifying managers. The old "managers" column in the
1150 Open_vSwitch table has been removed.
1151 - Many "name" columns are now immutable.
1153 - Dropped support for XenServer pre-5.6.100.
1154 - Dropped support for Linux pre-2.6.18.
1155 - Dropped controller discovery support.
1156 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
1157 Statistics reporting in the database is a rough equivalent.
1158 - Dropped the "corekeeper" package (now separate, at
1159 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
1160 - Performance and scalability improvements
1163 v1.1.0pre2 - 13 Sep 2010
1164 ------------------------
1167 v1.1.0pre1 - 31 Aug 2010
1168 ------------------------
1169 - OpenFlow 1.0 slicing (QoS) functionality
1170 - Python bindings for configuration database (no write support)
1171 - Performance and scalability improvements
1174 v1.0.1 - 31 May 2010
1175 --------------------
1176 - New "patch" interface type
1179 v1.0.0 - 15 May 2010
1180 --------------------
1181 - Configuration database with remote management
1184 - Support for XenServer 5.5 and 5.6
1185 - Performance and scalability improvements
1188 v0.99.2 - 18 Feb 2010
1189 ---------------------
1192 v0.99.1 - 25 Jan 2010
1193 ---------------------
1194 - Add support for sFlow(R)
1195 - Make headers compatible with C++
1198 v0.99.0 - 14 Jan 2010
1199 ---------------------
1200 - User-space forwarding engine
1203 v0.90.7 - 29 Nov 2009
1204 ---------------------
1205 - Add support for NetFlow active timeouts
1208 v0.90.6 - 6 Oct 2009
1209 --------------------
1212 v0.90.5 - 21 Sep 2009
1213 ---------------------
1214 - Generalize in-band control to more diverse network setups
projects / ovs.git / blob