3 - NSH implementation now conforms to latest draft (draft-ietf-sfc-nsh-28).
5 * Add a new action dec_nsh_ttl.
6 * Enable NSH support in kernel datapath.
8 * New high-level documentation in ovsdb(7).
9 * New file format documentation for developers in ovsdb(5).
10 * Protocol documentation moved from ovsdb-server(1) to ovsdb-server(7).
11 * ovsdb-client: New "get-schema-cksum" and "query" commands.
12 * ovsdb-client: New "backup" and "restore" commands.
13 * ovsdb-tool: New "db-name" and "schema-name" commands.
14 - ovs-vsctl and other commands that display data in tables now support a
15 --max-column-width option to limit column width.
16 - No longer slow-path traffic that sends to a controller. Applications,
17 such as OVN ACL logging, want to send a copy of a packet to a
18 controller while leaving the actual packet forwarding in the datapath.
20 * The "requested-chassis" option for a logical switch port now accepts a
21 chassis "hostname" in addition to a chassis "name".
23 - Added support to send IPv6 Router Advertisement packets in response to
24 the IPv6 Router Solicitation packets from the VIF ports.
25 - Added support to generate Neighbor Solicitation packets using the OVN
26 action 'nd_ns' to resolve unknown next hop MAC addresses for the
28 * ovn-ctl: New commands run_nb_ovsdb and run_sb_ovsdb.
30 * ct_clear action is now backed by kernel datapath. Support is probed for
33 * Add support for compiling OVS with the latest Linux 4.13 kernel
34 - ovs-dpctl and related ovs-appctl commands:
35 * "flush-conntrack" now accept a 5-tuple to delete a specific
36 connection tracking entry.
37 * New "ct-set-maxconns", "ct-get-maxconns", and "ct-get-nconns" commands
38 for userspace datapath.
39 - No longer send packets to the Linux TAP device if it's DOWN unless it is
40 in another networking namespace.
42 * Add support for DPDK v17.11
43 * Add support for vHost IOMMU
44 * New debug appctl command 'netdev-dpdk/get-mempool-info'.
45 * All the netdev-dpdk appctl commands described in ovs-vswitchd man page.
47 - DPDK physical ports now return custom set of "dropped", "error" and
48 "management" statistics.
49 - ovs-ofctl dump-ports command now prints new of set custom statistics
50 if available (for OpenFlow 1.4+).
51 * New appctl command 'dpif-netdev/pmd-rxq-rebalance' to rebalance rxq to
53 * Add rxq utilization of pmd to appctl 'dpif-netdev/pmd-rxq-show'.
54 * Add support for vHost dequeue zero copy (experimental)
56 * Output packet batching support.
58 * Datapath IDs may now be specified as 0x1 (etc.) instead of 16 digits.
59 * Configuring a controller, or unconfiguring all controllers, now deletes
60 all groups and meters (as well as all flows).
61 - New --enable-sparse configure option enables "sparse" checking by default.
62 - Added additional information to vhost-user status.
67 * ovs-ofctl can now accept and display port names in place of numbers. By
68 default it always accepts names and in interactive use it displays them;
69 use --names or --no-names to override. See ovs-ofctl(8) for details.
70 * "ovs-ofctl dump-flows" now accepts --no-stats to omit flow statistics.
71 - New ovs-dpctl command "ct-stats-show" to show connection tracking stats.
73 * Added support to set packet mark for tunnel endpoint using
74 `egress_pkt_mark` OVSDB option.
75 * When using Linux kernel datapath tunnels may be created using rtnetlink.
76 This will allow us to take advantage of new tunnel features without
77 having to make changes to the vport modules.
78 - EMC insertion probability is reduced to 1% and is configurable via
79 the new 'other_config:emc-insert-inv-prob' option.
81 * DPDK log messages redirected to OVS logging subsystem.
82 Log level can be changed in a usual OVS way using
83 'ovs-appctl vlog' commands for 'dpdk' module. Lower bound
84 still can be configured via extra arguments for DPDK EAL.
85 * dpdkvhostuser ports are marked as deprecated. They will be removed
86 in an upcoming release.
87 * Support for DPDK v17.05.1.
88 - IPFIX now provides additional counters:
89 * Total counters since metering process startup.
90 * Per-flow TCP flag counters.
91 * Multicast, broadcast, and unicast counters.
92 - New support for multiple VLANs (802.1ad or "QinQ"), including a new
93 "dot1q-tunnel" port VLAN mode.
94 - In ovn-vsctl and vtep-ctl, record UUIDs in commands may now be
95 abbreviated to 4 hex digits.
97 * Added NAT support for userspace datapath.
98 * Added FTP and TFTP support with NAT for userspace datapath.
99 * Experimental NSH (Network Service Header) support in userspace datapath.
101 * New built-in DNS support.
102 * IPAM for IPv4 can now exclude user-defined addresses from assignment.
103 * IPAM can now assign IPv6 addresses.
104 * Make the DHCPv4 router setting optional.
105 * Gratuitous ARP for NAT addresses on a distributed logical router.
106 * Allow ovn-controller SSL configuration to be obtained from vswitchd
108 * ovn-trace now has basic support for tracing distributed firewalls.
109 * In ovn-nbctl and ovn-sbctl, record UUIDs in commands may now be
110 abbreviated to 4 hex digits.
111 * "ovn-sbctl lflow-list" can now print OpenFlow flows that correspond
113 * Now uses OVSDB RBAC support to reduce impact of compromised hypervisors.
114 * Multiple chassis may now be specified for L3 gateways. When more than
115 one chassis is specified, OVN will manage high availability for that
117 * Add support for ACL logging.
118 * ovn-northd now has native support for active-standby high availability.
119 * Add support for QoS bandwidth limt with DPDK.
120 - Tracing with ofproto/trace now traces through recirculation.
122 * New support for role-based access control (see ovsdb-server(1)).
123 - New commands 'stp/show' and 'rstp/show' (see ovs-vswitchd(8)).
125 * All features required by OpenFlow 1.4 are now implemented, so
126 ovs-vswitchd now enables OpenFlow 1.4 by default (in addition to
127 OpenFlow 1.0 to 1.3).
128 * Increased support for OpenFlow 1.6 (draft).
129 * Bundles now support hashing by just nw_src or nw_dst.
130 * The "learn" action now supports a "limit" option (see ovs-ofctl(8)).
131 * The port status bit OFPPS_LIVE now reflects link aliveness.
132 * OpenFlow 1.5 packet-out is now supported.
133 * Support for OpenFlow 1.5 field packet_type and packet-type-aware
135 * Added generic encap and decap actions (EXT-382).
136 First supported use case is encap/decap for Ethernet.
137 * Added NSH (Network Service Header) support in userspace
138 Used generic encap and decap actions to implement encapsulation and
139 decapsulation of NSH header.
140 IETF NSH draft - https://datatracker.ietf.org/doc/draft-ietf-sfc-nsh/
141 * Conntrack state is only available to the processing path that
142 follows the "recirc_table" argument of the ct() action. Starting
143 in OVS 2.8, this state is now cleared for the current processing
144 path whenever ct() is called.
146 * OVN services are no longer restarted automatically after upgrade.
147 * ovs-vswitchd and ovsdb-server run as non-root users by default.
148 - Add --cleanup option to command 'ovs-appctl exit' (see ovs-vswitchd(8)).
150 * Use new tunnel port option "packet_type" to configure L2 vs. L3.
151 * In conjunction with PTAP tunnel ports can handle a mix of L2 and L3
153 * New vxlan tunnel extension "gpe" to support VXLAN-GPE tunnels.
154 * New support for non-Ethernet (L3) payloads in GRE and VXLAN-GPE.
155 - The BFD detection multiplier is now user-configurable.
156 - Add experimental support for hardware offloading
157 * HW offloading is disabled by default.
158 * HW offloading is done through the TC interface.
159 - IPv6 link local addresses are now supported on Linux. Use % to designate
163 ---------------------
164 - Utilities and daemons that support SSL now allow protocols and
165 ciphers to be configured with --ssl-protocols and --ssl-ciphers.
167 * QoS is now implemented via egress shaping rather than ingress policing.
168 * DSCP marking is now supported, via the new northbound QoS table.
169 * IPAM now supports fixed MAC addresses.
170 * Support for source IP address based routing.
172 - New --ovs option to also print OpenFlow flows.
173 - put_dhcp_opts and put_dhcp_optsv6 actions may now be traced.
174 * Support for managing SSL and remote connection configuration in
175 northbound and southbound databases.
176 * TCP connections to northbound and southbound databases are no
177 longer enabled by default and must be explicitly configured.
178 See documentation for ovn-sbctl/ovn-nbctl "set-connection"
179 command or the ovn-ctl "--db-sb-create-insecure-remote" and
180 "--db-nb-create-insecure-remote" command-line options for
181 information regarding remote connection configuration.
182 * New appctl "inject-pkt" command in ovn-controller that allows
183 packets to be injected into the connected OVS instance.
184 * Distributed logical routers may now be connected directly to
185 logical switches with localnet ports, by specifying a
186 "redirect-chassis" on the distributed gateway port of the
187 logical router. NAT rules may be specified directly on the
188 distributed logical router, and are handled either centrally on
189 the "redirect-chassis", or in many cases are handled locally on
190 the hypervisor where the corresponding logical port resides.
191 Gratuitous ARP for NAT addresses on a distributed logical
192 router is not yet supported, but will be added in a future
194 - Fixed regression in table stats maintenance introduced in OVS
195 2.3.0, wherein the number of OpenFlow table hits and misses was
198 * OFPT_PACKET_OUT messages are now supported in bundles.
199 * A new "selection_method=dp_hash" type for OpenFlow select group
200 bucket selection that uses the datapath computed 5-tuple hash
201 without making datapath flows match the 5-tuple fields, which
202 is useful for more efficient load balancing, for example. This
203 uses the Netronome extension to OpenFlow 1.5+ that allows
204 control over the OpenFlow select groups selection method. See
205 "selection_method" and related options in ovs-ofctl(8) for
207 * The "sample" action now supports "ingress" and "egress" options.
208 * The "ct" action now supports the TFTP ALG where support is available.
209 * New actions "clone" and "ct_clear".
210 * The "meter" action is now supported in the userspace datapath.
212 * 'bundle' command now supports packet-out messages.
213 * New syntax for 'ovs-ofctl packet-out' command, which uses the
214 same string parser as the 'bundle' command. The old 'packet-out'
215 syntax is deprecated and will be removed in a later OVS
217 * New unixctl "ofctl/packet-out" command, which can be used to
218 instruct a flow monitor to issue OpenFlow packet-out messages.
220 * Remote connections can now be made read-only (see ovsdb-server(1)).
222 * TLV mappings for protocols such as Geneve are now segregated on
223 a per-OpenFlow bridge basis rather than globally. (The interface
225 * Removed support for IPsec tunnels.
227 * New option 'n_rxq_desc' and 'n_txq_desc' fields for DPDK interfaces
228 which set the number of rx and tx descriptors to use for the given port.
229 * Support for DPDK v16.11.
230 * Support for rx checksum offload. Refer DPDK HOWTO for details.
231 * Port Hotplug is now supported.
232 * DPDK physical ports can now have arbitrary names. The PCI address of
233 the device must be set using the 'dpdk-devargs' option. Compatibility
234 with the old dpdk<portid> naming scheme is broken, and as such a
235 device will not be available for use until a valid dpdk-devargs is
237 * Virtual DPDK Poll Mode Driver (vdev PMD) support.
238 * Removed experimental tag.
240 * A package upgrade does not automatically restart OVS service.
241 - ovs-vswitchd/ovs-vsctl:
242 * Ports now have a "protected" flag. Protected ports can not forward
243 frames to other protected ports. Unprotected ports can receive and
244 forward frames to protected and other unprotected ports.
245 - ovs-vsctl, ovn-nbctl, ovn-sbctl, vtep-ctl:
246 * Database commands now accept integer ranges, e.g. "set port
247 eth0 trunks=1-10" to enable trunking VLANs 1 to 10.
250 ---------------------
251 - First supported release of OVN. See ovn-architecture(7) for more
254 * New "monitor_cond" "monitor_cond_update" and "update2" extensions to
257 * OpenFlow 1.3+ bundles now expire after 10 seconds since the
258 last time the bundle was either opened, modified, or closed.
259 * OpenFlow 1.3 Extension 230, adding OpenFlow Bundles support, is
261 * OpenFlow 1.3+ bundles are now supported for group mods as well as
262 flow mods and port mods. Both 'atomic' and 'ordered' bundle
263 flags are supported for group mods as well as flow mods.
264 * Internal OpenFlow rule representation for load and set-field
265 actions is now much more memory efficient. For a complex flow
266 table this can reduce rule memory consumption by 40%.
267 * Bundles are now much more memory efficient than in OVS 2.5.
268 Together with memory efficiency improvements in OpenFlow rule
269 representation, the peak OVS resident memory use during a
270 bundle commit for large complex set of flow mods can be only
271 25% of that in OVS 2.5 (4x lower).
272 * OpenFlow 1.1+ OFPT_QUEUE_GET_CONFIG_REQUEST now supports OFPP_ANY.
273 * OpenFlow 1.4+ OFPMP_QUEUE_DESC is now supported.
274 * OpenFlow 1.4+ OFPT_TABLE_STATUS is now supported.
275 * New property-based packet-in message format NXT_PACKET_IN2 with support
276 for arbitrary user-provided data and for serializing flow table
277 traversal into a continuation for later resumption.
278 * New extension message NXT_SET_ASYNC_CONFIG2 to allow OpenFlow 1.4-like
279 control over asynchronous messages in earlier versions of OpenFlow.
280 * New OpenFlow extension NXM_NX_MPLS_TTL to provide access to MPLS TTL.
281 * New output option, output(port=N,max_len=M), to allow truncating a
282 packet to size M bytes when outputting to port N.
283 * New command OFPGC_ADD_OR_MOD for OFPT_GROUP_MOD message that adds a
284 new group or modifies an existing groups
285 * The optional OpenFlow packet buffering feature is deprecated in
286 this release, and will be removed in the next OVS release
287 (2.7). After the change OVS always sends the 'buffer_id' as
288 0xffffffff in packet-in messages and will send an error
289 response if any other value of this field is included in
290 packet-out and flow mod sent by a controller. Controllers are
291 already expected to work properly in cases where the switch can
292 not buffer packets, so this change should not affect existing
294 * New OpenFlow extension NXT_CT_FLUSH_ZONE to flush conntrack zones.
295 - Improved OpenFlow version compatibility for actions:
296 * New OpenFlow extension to support the "group" action in OpenFlow 1.0.
297 * OpenFlow 1.0 "enqueue" action now properly translated to OpenFlow 1.1+.
298 * OpenFlow 1.1 "mod_nw_ecn" and OpenFlow 1.1+ "mod_nw_ttl" actions now
299 properly translated to OpenFlow 1.0.
301 * queue-get-config command now allows a queue ID to be specified.
302 * '--bundle' option can now be used with OpenFlow 1.3 and with group mods.
303 * New "bundle" command allows executing a mixture of flow and group mods
304 as a single atomic transaction.
305 * New option "--color" to produce colorized output for some commands.
306 * New option '--may-create' to use OFPGC_ADD_OR_MOD in mod-group command.
308 * New "sampling_port" option for "sample" action to allow sampling
309 ingress and egress tunnel metadata with IPFIX.
310 * New ovs-ofctl commands "dump-ipfix-bridge" and "dump-ipfix-flow" to
311 dump bridge IPFIX statistics and flow based IPFIX statistics.
312 * New setting other-config:virtual_obs_id to add an arbitrary string
315 * OVS Linux datapath now implements Conntrack NAT action with all
316 supported Linux kernels.
317 * Support for truncate action.
318 * New QoS type "linux-noop" that prevents Open vSwitch from trying to
319 manage QoS for a given port (useful when other software manages QoS).
321 * New option "n_rxq" for PMD interfaces.
322 Old 'other_config:n-dpdk-rxqs' is no longer supported.
323 Not supported by vHost interfaces. For them number of rx and tx queues
324 is applied from connected virtio device.
325 * New 'other_config:pmd-rxq-affinity' field for PMD interfaces, that
326 allows to pin port's rx queues to desired cores.
327 * New appctl command 'dpif-netdev/pmd-rxq-show' to check the port/rxq
329 * Type of log messages from PMD threads changed from INFO to DBG.
330 * QoS functionality with sample egress-policer implementation.
331 * The mechanism for configuring DPDK has changed to use database
332 * Sensible defaults have been introduced for many of the required
333 configuration options
334 * DB entries have been added for many of the DPDK EAL command line
335 arguments. Additional arguments can be passed via the dpdk-extra
337 * Add ingress policing functionality.
338 * PMD threads servicing vHost User ports can now come from the NUMA
339 node that device memory is located on if CONFIG_RTE_LIBRTE_VHOST_NUMA
341 * Basic connection tracking for the userspace datapath (no ALG,
342 fragmentation or NAT support yet)
343 * Support for DPDK 16.07
344 * Optional support for DPDK pdump enabled.
345 * Jumbo frame support
346 * Remove dpdkvhostcuse port type.
347 * OVS client mode for vHost and vHost reconnect (Requires QEMU 2.7)
348 * 'dpdkvhostuserclient' port type.
349 - Increase number of registers to 16.
350 - ovs-benchmark: This utility has been removed due to lack of use and
353 * New "vlog/close" command.
355 * Added the ability to selectively start the forwarding and database
356 functions (ovs-vswitchd and ovsdb-server, respectively).
358 * Remove max number of sessions limit, to enable connection scaling
361 * Added support for Python 3.4+ in addition to existing support
364 * Introduced SELinux policy package.
365 - Datapath Linux kernel compatibility.
366 * Dropped support for kernel older than 3.10.
367 * Removed VLAN splinters feature.
368 * Datapath supports kernel upto 4.7.
370 * Flow based tunnel match and action can be used for IPv6 address using
371 tun_ipv6_src, tun_ipv6_dst fields.
372 * Added support for IPv6 tunnels, for details checkout FAQ.
373 * Deprecated support for IPsec tunnels ports.
374 - A wrapper script, 'ovs-tcpdump', to easily port-mirror an OVS port and
376 - Introduce --no-self-confinement flag that allows daemons to work with
377 sockets outside their run directory.
378 - ovs-pki: Changed message digest algorithm from SHA-1 to SHA-512 because
379 SHA-1 is no longer secure and some operating systems have started to
380 disable it in OpenSSL.
381 - Add 'mtu_request' column to the Interface table. It can be used to
382 configure the MTU of the ports.
385 - Using openvswitch module in conjunction with upstream Linux tunnels:
386 * When using the openvswitch module distributed with OVS against kernel
387 versions 4.4 to 4.6, the openvswitch module cannot be loaded or used at
388 the same time as "ip_gre".
389 - Conntrack FTP ALGs: When using the openvswitch module distributed with
390 OVS, particular Linux distribution kernels versions may provide diminished
391 functionality. This typically affects active FTP data connections when
392 using "actions=ct(alg=ftp),..." in flow tables. Specifically:
393 * Centos 7.1 kernels (3.10.0-2xx) kernels are unable to correctly set
394 up expectations for FTP data connections in multiple zones,
395 eg "actions=ct(zone=1,alg=ftp),ct(zone=2,alg=ftp),...". Executing the
396 "ct" action for subsequent data connections may fail to determine that
397 the data connection is "related" to an existing connection.
398 * Centos 7.2 kernels (3.10.0-3xx) kernels may not establish FTP ALG state
399 correctly for NATed connections. As a result, flows that perform NAT,
400 eg "actions=ct(nat,ftp=alg,table=1),..." may fail to NAT the packet,
401 and will populate the "ct_state=inv" bit in the flow.
405 ---------------------
406 - Dropped support for Python older than version 2.7. As a consequence,
407 using Open vSwitch 2.5 or later on XenServer 6.5 or earlier (which
408 have Python 2.4) requires first installing Python 2.7.
410 * Group chaining (where one OpenFlow group triggers another) is
412 * OpenFlow 1.4+ "importance" is now considered for flow eviction.
413 * OpenFlow 1.4+ OFPTC_EVICTION is now implemented.
414 * OpenFlow 1.4+ OFPTC_VACANCY_EVENTS is now implemented.
415 * OpenFlow 1.4+ OFPMP_TABLE_DESC is now implemented.
416 * Allow modifying the ICMPv4/ICMPv6 type and code fields.
417 * OpenFlow 1.4+ OFPT_SET_ASYNC_CONFIG and OFPT_GET_ASYNC_CONFIG are
420 * New "out_group" keyword for OpenFlow 1.1+ matching on output group.
422 * Geneve tunnels can now match and set options and the OAM bit.
423 * The nonstandard GRE64 tunnel extension has been dropped.
424 - Support Multicast Listener Discovery (MLDv1 and MLDv2).
425 - Add 'symmetric_l3l4' and 'symmetric_l3l4+udp' hash functions.
426 - sFlow agent now reports tunnel and MPLS structures.
427 - New 'check-system-userspace', 'check-kmod' and 'check-kernel' Makefile
428 targets to run a new system testsuite. These tests can be run inside
429 a Vagrant box. See INSTALL.md for details
430 - Mark --syslog-target argument as deprecated. It will be removed in
431 the next OVS release.
432 - Added --user option to all daemons
433 - Add support for connection tracking through the new "ct" action
434 and "ct_state"/"ct_zone"/"ct_mark"/"ct_label" match fields. Only
435 available on Linux kernels with the connection tracking module loaded.
436 - Add experimental version of OVN. OVN, the Open Virtual Network, is a
437 system to support virtual network abstraction. OVN complements the
438 existing capabilities of OVS to add native support for virtual network
439 abstractions, such as virtual L2 and L3 overlays and security groups.
441 * DPDK ports may now be created via network scripts (see README.RHEL).
444 * Added multiqueue support to vhost-user
445 * Note: QEMU 2.5+ required for multiqueue support
448 ---------------------
449 - Flow table modifications are now atomic, meaning that each packet
450 now sees a coherent version of the OpenFlow pipeline. For
451 example, if a controller removes all flows with a single OpenFlow
452 "flow_mod", no packet sees an intermediate version of the OpenFlow
453 pipeline where only some of the flows have been deleted.
454 - Added support for SFQ, FQ_CoDel and CoDel qdiscs.
455 - Add bash command-line completion support for ovs-vsctl Please check
456 utilities/ovs-command-compgen.INSTALL.md for how to use.
457 - The MAC learning feature now includes per-port fairness to mitigate
458 MAC flooding attacks.
459 - New support for a "conjunctive match" OpenFlow extension, which
460 allows constructing OpenFlow matches of the form "field1 in
461 {a,b,c...} AND field2 in {d,e,f...}" and generalizations. For details,
462 see documentation for the "conjunction" action in ovs-ofctl(8).
463 - Add bash command-line completion support for ovs-appctl/ovs-dpctl/
464 ovs-ofctl/ovsdb-tool commands. Please check
465 utilities/ovs-command-compgen.INSTALL.md for how to use.
466 - The "learn" action supports a new flag "delete_learned" that causes
467 the learned flows to be deleted when the flow with the "learn" action
469 - Basic support for the Geneve tunneling protocol. It is not yet
470 possible to generate or match options. This is planned for a future
471 release. The protocol is documented at
472 http://tools.ietf.org/html/draft-gross-geneve-00
473 - The OVS database now reports controller rate limiting statistics.
474 - sflow now exports information about LACP-based bonds, port names, and
475 OpenFlow port numbers, as well as datapath performance counters.
476 - ovs-dpctl functionality is now available for datapaths integrated
477 into ovs-vswitchd, via ovs-appctl. Some existing ovs-appctl
478 commands are now redundant and will be removed in a future
479 release. See ovs-vswitchd(8) for details.
481 * OpenFlow 1.4 bundles are now supported for flow mods and port
482 mods. For flow mods, both 'atomic' and 'ordered' bundle flags
483 are trivially supported, as all bundled messages are executed
484 in the order they were added and all flow table modifications
485 are now atomic to the datapath. Port mods may not appear in
486 atomic bundles, as port status modifications are not atomic.
487 * IPv6 flow label and neighbor discovery fields are now modifiable.
488 * OpenFlow 1.5 extended registers are now supported.
489 * The OpenFlow 1.5 actset_output field is now supported.
490 * OpenFlow 1.5 Copy-Field action is now supported.
491 * OpenFlow 1.5 masked Set-Field action is now supported.
492 * OpenFlow 1.3+ table features requests are now supported (read-only).
493 * Nicira extension "move" actions may now be included in action sets.
494 * "resubmit" actions may now be included in action sets. The resubmit
495 is executed last, and only if the action set has no "output" or "group"
497 * OpenFlow 1.4+ flow "importance" is now maintained in the flow table.
498 * A new Netronome extension to OpenFlow 1.5+ allows control over the
499 fields hashed for OpenFlow select groups. See "selection_method" and
500 related options in ovs-ofctl(8) for details.
501 - ovs-ofctl has a new '--bundle' option that makes the flow mod commands
502 ('add-flow', 'add-flows', 'mod-flows', 'del-flows', and 'replace-flows')
503 use an OpenFlow 1.4 bundle to operate the modifications as a single
504 atomic transaction. If any of the flow mods in a transaction fail, none
505 of them are executed. All flow mods in a bundle appear to datapath
506 lookups simultaneously.
507 - ovs-ofctl 'add-flow' and 'add-flows' commands now accept arbitrary flow
508 mods as an input by allowing the flow specification to start with an
509 explicit 'add', 'modify', 'modify_strict', 'delete', or 'delete_strict'
510 keyword. A missing keyword is treated as 'add', so this is fully
511 backwards compatible. With the new '--bundle' option all the flow mods
512 are executed as a single atomic transaction using an OpenFlow 1.4 bundle.
513 - ovs-pki: Changed message digest algorithm from MD5 to SHA-1 because
514 MD5 is no longer secure and some operating systems have started to disable
516 - ovsdb-server: New OVSDB protocol extension allows inequality tests on
517 "optional scalar" columns. See ovsdb-server(1) for details.
518 - ovs-vsctl now permits immutable columns in a new row to be modified in
519 the same transaction that creates the row.
520 - test-controller has been renamed ovs-testcontroller at request of users
521 who find it useful for testing basic OpenFlow setups. It is still not
522 a necessary or desirable part of most Open vSwitch deployments.
523 - Support for travis-ci.org based continuous integration builds has been
524 added. Build failures are reported to build@openvswitch.org. See INSTALL.md
525 file for additional details.
526 - Support for the Rapid Spanning Tree Protocol (IEEE 802.1D-2004).
527 The implementation has been tested successfully against the Ixia Automated
528 Network Validation Library (ANVL).
529 - Stats are no longer updated on fake bond interface.
530 - Keep active bond slave selection across OVS restart.
531 - A simple wrapper script, 'ovs-docker', to integrate OVS with Docker
532 containers. If and when there is a native integration of Open vSwitch
533 with Docker, the wrapper script will be retired.
534 - Added support for DPDK Tunneling. VXLAN, GRE, and Geneve are supported
535 protocols. This is generic tunneling mechanism for userspace datapath.
536 - Support for multicast snooping (IGMPv1, IGMPv2 and IGMPv3)
537 - Support for Linux kernels up to 4.0.x
538 - The documentation now use the term 'destination' to mean one of syslog,
539 console or file for vlog logging instead of the previously used term
541 - Support for VXLAN Group Policy extension
542 - Initial support for the IETF Auto-Attach SPBM draft standard. This
543 contains rudimentary support for the LLDP protocol as needed for
545 - The default OpenFlow and OVSDB ports are now the IANA-assigned
546 numbers. OpenFlow is 6653 and OVSDB is 6640.
547 - Support for DPDK vHost.
548 - Support for outer UDP checksums in Geneve and VXLAN.
549 - The kernel vports with dependencies are no longer part of the overall
550 openvswitch.ko but built and loaded automatically as individual kernel
551 modules (vport-*.ko).
552 - Support for STT tunneling.
553 - ovs-sim: New developer tool for simulating multiple OVS instances.
554 See ovs-sim(1) for more information.
555 - Support to configure method (--syslog-method argument) that determines
556 how daemons will talk with syslog.
557 - Support for "ovs-appctl vlog/list-pattern" command that lets to query
558 logging message format for each destination.
562 ---------------------
563 - OpenFlow 1.1, 1.2, and 1.3 are now enabled by default in
565 - Linux kernel datapath now has an exact match cache optimizing the
566 flow matching process.
567 - Datapath flows now have partially wildcarded tranport port field
568 matches. This reduces userspace upcalls, but increases the
569 number of different masks in the datapath. The kernel datapath
570 exact match cache removes the overhead of matching the incoming
571 packets with the larger number of masks, but when paired with an
572 older kernel module, some workloads may perform worse with the
574 - Compatibility with autoconf 2.63 (previously >=2.64)
576 v2.2.0 - Internal Release
577 ---------------------
578 - Internal ports are no longer brought up by default, because it
579 should be an administrator task to bring up devices as they are
581 - ovs-vsctl now reports when ovs-vswitchd fails to create a new port or
583 - Port creation and configuration errors are now stored in a new error
584 column of the Interface table and included in 'ovs-vsctl show'.
585 - The "ovsdbmonitor" graphical tool has been removed, because it was
586 poorly maintained and not widely used.
587 - New "check-ryu" Makefile target for running Ryu tests for OpenFlow
588 controllers against Open vSwitch. See INSTALL.md for details.
589 - Added IPFIX support for SCTP flows and templates for ICMPv4/v6 flows.
590 - Upon the receipt of a SIGHUP signal, ovs-vswitchd no longer reopens its
591 log file (it will terminate instead). Please use 'ovs-appctl vlog/reopen'
593 - Support for Linux kernels up to 3.14. From Kernel 3.12 onwards OVS uses
594 tunnel API for GRE and VXLAN.
595 - Added DPDK support.
596 - Added support for custom vlog patterns in Python
600 ---------------------
601 - Address prefix tracking support for flow tables. New columns
602 "prefixes" in OVS-DB table "Flow_Table" controls which packet
603 header fields are used for address prefix tracking. Prefix
604 tracking allows the classifier to skip rules with longer than
605 necessary prefixes, resulting in better wildcarding for datapath
606 flows. Default configuration is to not use any fields for prefix
607 tracking. However, if any flow tables contain both exact matches
608 and masked matches for IP address fields, OVS performance may be
609 increased by using this feature.
610 * As of now, the fields for which prefix lookup can be enabled
611 are: 'tun_id', 'tun_src', 'tun_dst', 'nw_src', 'nw_dst' (or
612 aliases 'ip_src' and 'ip_dst'), 'ipv6_src', and 'ipv6_dst'.
613 (Using this feature for 'tun_id' would only make sense if the
614 tunnel IDs have prefix structure similar to IP addresses.)
615 * There is a maximum number of fields that can be enabled for any
616 one flow table. Currently this limit is 3.
618 $ ovs-vsctl set Bridge br0 flow_tables:0=@N1 -- \
619 --id=@N1 create Flow_Table name=table0
620 $ ovs-vsctl set Bridge br0 flow_tables:1=@N1 -- \
621 --id=@N1 create Flow_Table name=table1
622 $ ovs-vsctl set Flow_Table table0 prefixes=ip_dst,ip_src
623 $ ovs-vsctl set Flow_Table table1 prefixes=[]
624 - TCP flags matching: OVS now supports matching of TCP flags. This
625 has an adverse performance impact when using OVS userspace 1.10
626 or older (no megaflows support) together with the new OVS kernel
627 module. It is recommended that the kernel and userspace modules
628 both are upgraded at the same time.
629 - The default OpenFlow and OVSDB ports will change to
630 IANA-assigned numbers in a future release. Consider updating
631 your installations to specify port numbers instead of using the
634 * The OpenFlow 1.1+ "Write-Actions" instruction is now supported.
635 * OVS limits the OpenFlow port numbers it assigns to port 32767 and
636 below, leaving port numbers above that range free for assignment
638 * ovs-vswitchd now honors changes to the "ofport_request" column
639 in the Interface table by changing the port's OpenFlow port
641 * The Open vSwitch software switch now supports OpenFlow groups.
642 - ovs-vswitchd.conf.db.5 man page will contain graphviz/dot
643 diagram only if graphviz package was installed at the build time.
644 - Support for Linux kernels up to 3.11
646 The "show" command also displays mega flow mask stats.
648 * New command "ofp-parse-pcap" to dump OpenFlow from PCAP files.
649 - ovs-controller has been renamed test-controller. It is no longer
650 packaged or installed by default, because too many users assumed
651 incorrectly that ovs-controller was a necessary or desirable part
652 of an Open vSwitch deployment.
653 - Added vlog option to export to a UDP syslog sink.
655 * The "monitor" command can now monitor all tables in a database,
656 instead of being limited to a single table.
657 - The flow-eviction-threshold has been replaced by the flow-limit which is a
658 hard limit on the number of flows in the datapath. It defaults to 200,000
659 flows. OVS automatically adjusts this number depending on network
661 - Added IPv6 support for active and passive socket communications.
665 ---------------------
666 - The ovs-vswitchd process is no longer single-threaded. Multiple
667 threads are now used to handle flow set up and asynchronous
670 * Experimental support for OpenFlow 1.1 (in addition to 1.2 and
671 1.3, which had experimental support in 1.10).
672 * Experimental protocol support for OpenFlow 1.1+ groups. This
673 does not yet include an implementation in the Open vSwitch
675 * Experimental protocol support for OpenFlow 1.2+ meters. This
676 does not yet include an implementation in the Open vSwitch
678 * New support for matching outer source and destination IP address
679 of tunneled packets, for tunnel ports configured with the newly
680 added "remote_ip=flow" and "local_ip=flow" options.
681 * Support for matching on metadata 'pkt_mark' for interacting with
682 other system components. On Linux this corresponds to the skb
684 * Support matching, rewriting SCTP ports
685 - The Interface table in the database has a new "ifindex" column to
686 report the interface's OS-assigned ifindex.
687 - New "check-oftest" Makefile target for running OFTest against Open
688 vSwitch. See README-OFTest for details.
689 - The flow eviction threshold has been moved to the Open_vSwitch table.
690 - Database names are now mandatory when specifying ovsdb-server options
691 through database paths (e.g. Private key option with the database name
692 should look like "--private-key=db:Open_vSwitch,SSL,private_key").
693 - Added ovs-dev.py, a utility script helpful for Open vSwitch developers.
694 - Support for Linux kernels up to 3.10
696 * New "ofp-parse" for printing OpenFlow messages read from a file.
697 * New commands for OpenFlow 1.1+ groups.
698 - Added configurable flow caching support to IPFIX exporter.
699 - Dropped support for Linux pre-2.6.32.
700 - Log file timestamps and ovsdb commit timestamps are now reported
701 with millisecond resolution. (Previous versions only reported
705 v1.11.0 - 28 Aug 2013
706 ---------------------
707 - Support for megaflows, which allows wildcarding in the kernel (and
708 any dpif implementation that supports wildcards). Depending on
709 the flow table and switch configuration, flow set up rates are
710 close to the Linux bridge.
711 - The "tutorial" directory contains a new tutorial for some advanced
712 Open vSwitch features.
713 - Stable bond mode has been removed.
714 - The autopath action has been removed.
715 - New support for the data encapsulation format of the LISP tunnel
716 protocol (RFC 6830). An external control plane or manual flow
717 setup is required for EID-to-RLOC mapping.
719 * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
720 1.1 and later are now implemented.
721 * New "stack" extension for use in actions, to push and pop from
723 * The "load" and "set_field" actions can now modify the "in_port". (This
724 allows one to enable output to a flow's input port by setting the
725 in_port to some unused value, such as OFPP_NONE.)
727 * New debugging commands "add-flow", "mod-flow", "del-flow".
728 * "dump-flows" now has a -m option to increase output verbosity.
729 - In dpif-based bridges, cache action translations, which can improve
730 flow set up performance by 80% with a complicated flow table.
731 - New syslog format, prefixed with "ovs|", to be easier to filter.
732 - RHEL: Removes the default firewall rule that allowed GRE traffic to
733 pass through. Any users that relied on this automatic firewall hole
734 will have to manually configure it. The ovs-ctl(8) manpage documents
735 the "enable-protocol" command that can be used as an alternative.
736 - New CFM demand mode which uses data traffic to indicate interface
739 v1.10.0 - 01 May 2013
740 ---------------------
741 - Bridge compatibility support has been removed. Any uses that
742 rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
743 or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
745 - The maximum size of the MAC learning table is now configurable.
746 - With the Linux datapath, packets for new flows are now queued
747 separately on a per-port basis, so it should no longer be
748 possible for a large number of new flows arriving on one port to
749 prevent new flows from being processed on other ports.
751 * Previously ovs-vsctl would retry connecting to the database forever,
752 causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
753 only tries once by default (use --retry to try forever). This change
754 means that you may want to remove uses of --timeout to avoid hangs
756 * Many "ovs-vsctl" database commands now accept an --if-exists option.
757 Please refer to the ovs-vsctl manpage for details.
759 - Experimental support for newer versions of OpenFlow. See
760 the "What versions of OpenFlow does Open vSwitch support?"
761 question in the FAQ for more details.
762 - The OpenFlow "dp_desc" may now be configured by setting the
763 value of other-config:dp-desc in the Bridge table.
764 - It is possible to request the OpenFlow port number with the
765 "ofport_request" column in the Interface table.
766 - The NXM flow_removed message now reports the OpenFlow table ID
767 from which the flow was removed.
769 - New support for the VXLAN tunnel protocol (see the IETF draft here:
770 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
771 - Tunneling requires the version of the kernel module paired with
772 Open vSwitch 1.9.0 or later.
773 - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
774 is no longer supported.
775 - Path MTU discovery is no longer supported.
776 - CAPWAP tunneling support removed.
777 - Tunnels with multicast destination ports are no longer supported.
779 - The "dump-flows" and "del-flows" no longer require an argument
780 if only one datapath exists.
782 - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
783 commands available allow control over logging rate limits.
784 - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
785 that mimic the equivalent ovs-dpctl commands.
786 - The ofproto library is now responsible for assigning OpenFlow port
787 numbers. An ofproto implementation should assign them when
788 port_construct() is called.
789 - All dpif-based bridges of a particular type share a common
790 datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
791 commands will now return information on that shared datapath. To
792 get the equivalent bridge-specific information, use the new
793 "ovs-appctl dpif/*" commands.
794 - Backward-incompatible changes:
795 - Earlier Open vSwitch versions treated ANY as a wildcard in flow
796 syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
797 conflict. ANY was rarely used in flow syntax, so we chose to
798 retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
799 - Patch ports no longer require kernel support, so they now work
800 with FreeBSD and the kernel module built into Linux 3.3 and later.
801 - New "sample" action.
805 ------------------------
807 - Support for ipv6 set action.
808 - SKB mark matching and setting.
809 - support for Linux kernels up to 3.8
810 - FreeBSD is now a supported platform, thanks to code contributions from
811 Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
812 - ovs-bugtool: New --ovs option to report only OVS related information.
813 - New %t and %T log escapes to identify the subprogram within a
814 cooperating group of processes or threads that emitted a log message.
815 The default log patterns now include this information.
817 - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
818 fields in IPv6 neighbor discovery messages, and IPv6 flow label.
819 - Adds support for writing to the metadata field for a flow.
821 - The tunneling code no longer assumes input and output keys are
822 symmetric. If they are not, PMTUD needs to be disabled for
823 tunneling to work. Note this only applies to flow-based keys.
824 - New support for a nonstandard form of GRE that supports a 64-bit key.
825 - Tunnel Path MTU Discovery default value was set to 'disabled'.
826 This feature is deprecated and will be removed soon.
827 - Tunnel header caching removed.
829 - Commands and actions that accept port numbers now also accept keywords
830 that represent those ports (such as LOCAL, NONE, and ALL). This is
831 also the recommended way to specify these ports, for compatibility
832 with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
833 for these ports for different purposes).
835 - Support requesting the port number with the "port_no" option in
836 the "add-if" command.
837 - ovs-pki: The "online PKI" features have been removed, along with
838 the ovs-pki-cgi program that facilitated it, because of some
839 alarmist insecurity claims. We do not believe that these claims
840 are true, but because we do not know of any users for this
841 feature it seems better on balance to remove it. (The ovs-pki-cgi
842 program was not included in distribution packaging.)
843 - ovsdb-server now enforces the immutability of immutable columns. This
844 was not enforced in earlier versions due to an oversight.
845 - The following features are now deprecated. They will be removed no
846 earlier than February 2013. Please email dev@openvswitch.org with
848 - Bridge compatibility.
850 - The autopath action.
851 - Interface type "null".
852 - Numeric values for reserved ports (see "ovs-ofctl" note above).
853 - Tunnel Path MTU Discovery.
854 - CAPWAP tunnel support.
855 - The data in the RARP packets can now be matched in the same way as the
860 ------------------------
861 *** Internal only release ***
862 - New FAQ. Please send updates and additions!
863 - Authors of controllers, please read the new section titled "Action
864 Reproduction" in DESIGN, which describes an Open vSwitch change in
865 behavior in corner cases that may affect some controllers.
867 - A new test utility that can create L3 tunnel between two Open
868 vSwitches and detect connectivity issues.
870 - New --sort and --rsort options for "dump-flows" command.
871 - "mod-port" command can now control all OpenFlow config flags.
873 - Allow general bitwise masking for IPv4 and IPv6 addresses in
874 IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
876 - Allow support for arbitrary Ethernet masks. (Previously, only
877 the multicast bit in the destination address could be individually
879 - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
880 - The OFPST_QUEUE request now reports an error if a specified port or
881 queue does not exist, or for requests for a specific queue on all
882 ports, if the specified queue does not exist on any port. (Previous
883 versions generally reported an empty set of results.)
884 - New "flow monitor" feature to allow controllers to be notified of
885 flow table changes as they happen.
886 - Additional protocols are not mirrored and dropped when forward-bpdu is
887 false. For a full list, see the ovs-vswitchd.conf.db man page.
888 - Open vSwitch now sends RARP packets in situations where it previously
889 sent a custom protocol, making it consistent with behavior of QEMU and
891 - All Open vSwitch programs and log files now show timestamps in UTC,
892 instead the local timezone, by default.
896 ------------------------
897 - kernel modules are renamed. openvswitch_mod.ko is now
898 openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
899 - Increased the number of NXM registers to 8.
900 - Added ability to configure DSCP setting for manager and controller
901 connections. By default, these connections have a DSCP value of
902 Internetwork Control (0xc0).
903 - Added the granular link health statistics, 'cfm_health', to an
906 - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
907 - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
910 - Added the "dump-ports-desc" command to retrieve port
911 information using the new port description multipart messages.
913 - Added support for spawning ovs-test server from the client.
914 - Now ovs-test is able to automatically create test bridges and ports.
915 - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
916 - Tripled flow setup performance.
917 - The "coverage/log" command previously available through ovs-appctl
918 has been replaced by "coverage/show". The new command replies with
919 coverage counter values, instead of logging them.
923 ------------------------
924 - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
928 ------------------------
929 *** Internal only release ***
931 - LACP bonds no longer fall back to balance-slb when negotiations fail.
932 Instead they drop traffic.
933 - The default bond_mode changed from SLB to active-backup, to protect
934 unsuspecting users from the significant risks of SLB bonds (which are
935 documented in vswitchd/INTERNALS).
936 - Load balancing can be disabled by setting the bond-rebalance-interval
939 - Added support for bitwise matching on TCP and UDP ports.
940 See ovs-ofctl(8) for more information.
941 - NXM flow dumps now include times elapsed toward idle and hard
943 - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
944 controllers more precise control over which OpenFlow messages they
945 receive asynchronously.
946 - New "fin_timeout" action.
947 - Added "fin_timeout" support to "learn" action.
948 - New Nicira action NXAST_CONTROLLER that offers additional features
949 over output to OFPP_CONTROLLER.
950 - When QoS settings for an interface do not configure a default queue
951 (queue 0), Open vSwitch now uses a default configuration for that
952 queue, instead of dropping all packets as in previous versions.
954 - Logging to console and file will have UTC timestamp as a default for
955 all the daemons. An example of the default format is
956 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
958 - The syntax of commands and options to set log levels was simplified,
959 to make it easier to remember.
960 - New support for limiting the number of flows in an OpenFlow flow
961 table, with configurable policy for evicting flows upon
962 overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
963 for more information.
964 - New "enable-async-messages" column in the Controller table. If set to
965 false, OpenFlow connections to the controller will initially have all
966 asynchronous messages disabled, overriding normal OpenFlow behavior.
967 - ofproto-provider interface:
968 - "struct rule" has a new member "used" that ofproto implementations
969 should maintain by updating with ofproto_rule_update_used().
971 - The new option --timestamp causes the "monitor" command to print
972 a timestamp with every update.
973 - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
977 ------------------------
979 - Added support for querying, modifying, and deleting flows
980 based on flow cookie when using NXM.
981 - Added new NXM_PACKET_IN format.
982 - Added new NXAST_DEC_TTL action.
984 - Added daemonization support to the monitor and snoop commands.
986 - The "find" command supports new set relational operators
987 {=}, {!=}, {<}, {>}, {<=}, and {>=}.
988 - ovsdb-tool now uses the typical database and schema installation
989 directories as defaults.
990 - The default MAC learning timeout has been increased from 60 seconds
991 to 300 seconds. The MAC learning timeout is now configurable.
995 ------------------------
996 - Compatible with Open vSwitch kernel module included in Linux 3.3.
997 - New "VLAN splinters" feature to work around buggy device drivers
998 in old Linux versions. (This feature is deprecated. When
999 broken device drivers are no longer in widespread use, we will
1000 delete this feature.) See ovs-vswitchd.conf.db(5) for more
1003 - Added ability to match on IPv6 flow label through NXM.
1004 - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
1005 - Added ability to match on TTL in IPv4 and IPv6 through NXM.
1006 - Added ability to modify ECN bits in IPv4.
1007 - Added ability to modify TTL in IPv4.
1009 - Don't require the "normal" action to use mirrors. Traffic will
1010 now be properly mirrored for any flows, regardless of their
1012 - Track packet and byte statistics sent on mirrors.
1013 - The sFlow implementation can now usually infer the correct agent
1014 device instead of having to be told explicitly.
1016 - New "fdb/flush" command to flush bridge's MAC learning table.
1018 - A new distributed testing tool that allows one to diagnose performance
1019 and connectivity issues. This tool currently is not included in RH or
1021 - RHEL packaging now supports integration with Red Hat network scripts.
1023 - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
1024 to active-backup. SLB bonds carry significant risks with them
1025 (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
1026 users from running into. Users are advised to update any scripts or
1027 configuration which may be negatively impacted by explicitly setting
1028 the bond mode which they want to use.
1031 v1.3.0 - 09 Dec 2011
1032 ------------------------
1034 - Added an OpenFlow extension which allows the "output" action to accept
1036 - Added an OpenFlow extension for flexible learning.
1037 - Bumped number of NXM registers from four to five.
1039 - New "version" command to determine version of running daemon.
1040 - If no argument is provided for "cfm/show", displays detailed
1041 information about all interfaces with CFM enabled.
1042 - If no argument is provided for "lacp/show", displays detailed
1043 information about all ports with LACP enabled.
1045 - New "set-if" command to modify a datapath port's configuration.
1047 - The software switch now supports 255 OpenFlow tables, instead
1048 of just one. By default, only table 0 is consulted, but the
1049 new NXAST_RESUBMIT_TABLE action can look up in additional
1050 tables. Tables 128 and above are reserved for use by the
1051 switch itself; please use only tables 0 through 127.
1052 - Add support for 802.1D spanning tree (STP).
1053 - Fragment handling extensions:
1054 - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
1055 fields are made available for matching in fragments with
1057 - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
1058 via "ip_frag" in ovs-ofctl).
1059 - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
1060 fragment handling policy.
1061 - CAPWAP tunneling now supports an extension to transport a 64-bit key.
1062 By default it remains compatible with the old version and other
1063 standards-based implementations.
1064 - Flow setups are now processed in a round-robin manner across ports
1065 to prevent any single client from monopolizing the CPU and conducting
1066 a denial of service attack.
1067 - Added support for native VLAN tagging. A new "vlan_mode"
1068 parameter can be set for "port". Possible values: "access",
1069 "trunk", "native-tagged" and "native-untagged".
1070 - test-openflowd has been removed. Please use ovs-vswitchd instead.
1072 v1.2.0 - 03 Aug 2011
1073 ------------------------
1074 - New "ofproto" abstraction layer to ease porting to hardware
1076 - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
1077 - Datapath support for Linux kernels up to 3.0.
1079 - New "bundle" and "bundle_load" action extensions.
1081 - Implement table unique constraints.
1082 - Support cooperative locking between callers.
1084 - New "-s" option for "show" command prints packet and byte
1085 counters for each port.
1087 - New "--readd" option for "replace-flows".
1089 - New "show" command to print an overview of configuration.
1090 - New "comment" command to add remark that explains intentions.
1091 - ovs-brcompatd has been rewritten to fix long-standing bugs.
1092 - ovs-openflowd has been renamed test-openflowd and moved into the
1093 tests directory. Its presence confused too many users. Please
1094 use ovs-vswitchd instead.
1095 - New ovs-benchmark utility to test flow setup performance.
1096 - A new log level "off" has been added. Configuring a log facility
1097 "off" prevents any messages from being logged to it. Previously,
1098 "emer" was effectively "off" because no messages were ever logged at
1099 level "emer". Now, errors that cause a process to exit are logged
1101 - "configure" option --with-l26 has been renamed --with-linux, and
1102 --with-l26-source has been renamed --with-linux-source. The old
1103 names will be removed after the next release, so please update
1105 - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
1106 datapath/linux-2.6/compat-2.6 directories.
1108 - Dropped support for "tun_id_from_cookie" OpenFlow extension.
1109 Please use the extensible match extensions instead.
1110 - Removed the Maintenance_Point and Monitor tables in an effort
1111 to simplify 802.1ag configuration.
1112 - Performance and scalability improvements
1115 v1.1.0 - 05 Apr 2011
1116 ------------------------
1117 - Ability to define policies over IPv6
1120 - Support for extensible match extensions to OpenFlow
1122 - Support for HFSC qdisc.
1123 - Queue used by in-band control can now be configured.
1125 - Kernel<->userspace interface has been reworked and should be
1126 close to a stable ABI now.
1127 - "Port group" concept has been dropped.
1128 - GRE over IPSEC tunnels
1130 - New active backup bonding mode.
1131 - New L4 hashing support when LACP is enabled.
1132 - Source MAC hash now includes VLAN field also.
1134 - Greatly improved handling of large flow tables
1136 - "show" command now prints full vport configuration.
1137 - "dump-groups" command removed since kernel support for
1138 port groups was dropped.
1140 - New commands for working with the new Managers table.
1141 - "list" command enhanced with new formatting options and --columns
1143 - "get" command now accepts new --id option.
1144 - New "find" command.
1146 - New "queue-stats" command for printing queue stats.
1147 - New commands "replace-flows" and "diff-flows".
1148 - Commands to add and remove flows can now read from files.
1149 - New --flow-format option to enable or disable NXM.
1150 - New --more option to increase OpenFlow message verbosity.
1151 - Removed "tun-cookie" command, which is no longer useful.
1152 - ovs-controller enhancements for testing various features.
1153 - New ovs-vlan-test command for testing for Linux kernel driver VLAN
1154 bugs. New ovs-vlan-bug-workaround command for enabling and
1155 disabling a workaround for these driver bugs.
1157 - "Resubmit" actions now update flow statistics.
1158 - New "register" extension for use in matching and actions, via NXM.
1159 - New "multipath" experimental action extension.
1160 - New support for matching multicast Ethernet frames, via NXM.
1161 - New extension for OpenFlow vendor error codes.
1162 - New extension to set the QoS output queue without actually
1163 sending to an output port.
1164 - Open vSwitch now reports a single flow table, instead of
1165 separate hash and wildcard tables. This better models the
1166 current implementation.
1167 - New experimental "note" action.
1168 - New "ofproto/trace" ovs-appctl command and associated utilities
1169 to ease debugging complex flow tables.
1171 - Schema documentation now includes an entity-relationship diagram.
1172 - The database is now garbage collected. In most tables,
1173 unreferenced rows will be deleted automatically.
1174 - Many tables now include statistics updated periodically by
1175 ovs-vswitchd or ovsdb-server.
1176 - Every table now has an "external-ids" column for use by OVS
1178 - There is no default controller anymore. Each bridge must have its
1179 controller individually specified.
1180 - The "fail-mode" is now a property of a Bridge instead of a Controller.
1181 - New versioning and checksum features.
1182 - New Managers table and manager_options column in Open_vSwitch table
1183 for specifying managers. The old "managers" column in the
1184 Open_vSwitch table has been removed.
1185 - Many "name" columns are now immutable.
1187 - Dropped support for XenServer pre-5.6.100.
1188 - Dropped support for Linux pre-2.6.18.
1189 - Dropped controller discovery support.
1190 - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
1191 Statistics reporting in the database is a rough equivalent.
1192 - Dropped the "corekeeper" package (now separate, at
1193 http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
1194 - Performance and scalability improvements
1197 v1.1.0pre2 - 13 Sep 2010
1198 ------------------------
1201 v1.1.0pre1 - 31 Aug 2010
1202 ------------------------
1203 - OpenFlow 1.0 slicing (QoS) functionality
1204 - Python bindings for configuration database (no write support)
1205 - Performance and scalability improvements
1208 v1.0.1 - 31 May 2010
1209 --------------------
1210 - New "patch" interface type
1213 v1.0.0 - 15 May 2010
1214 --------------------
1215 - Configuration database with remote management
1218 - Support for XenServer 5.5 and 5.6
1219 - Performance and scalability improvements
1222 v0.99.2 - 18 Feb 2010
1223 ---------------------
1226 v0.99.1 - 25 Jan 2010
1227 ---------------------
1228 - Add support for sFlow(R)
1229 - Make headers compatible with C++
1232 v0.99.0 - 14 Jan 2010
1233 ---------------------
1234 - User-space forwarding engine
1237 v0.90.7 - 29 Nov 2009
1238 ---------------------
1239 - Add support for NetFlow active timeouts
1242 v0.90.6 - 6 Oct 2009
1243 --------------------
1246 v0.90.5 - 21 Sep 2009
1247 ---------------------
1248 - Generalize in-band control to more diverse network setups
projects / ovs.git / blob