-port-v1.4.0
+post-v1.10.0
+---------------------
+ - Stable bond mode has been removed.
+ - The autopath action has been removed.
+ - New support for the data encapsulation format of the LISP tunnel
+ protocol (RFC 6830). An external control plane or manual flow
+ setup is required for EID-to-RLOC mapping.
+ - OpenFlow:
+ * The "dec_mpls_ttl" and "set_mpls_ttl" actions from OpenFlow
+ 1.1 and later are now implemented.
+ * New "stack" extension for use in actions, to push and pop from
+ NXM fields.
+ - ovs-dpctl:
+ * New debugging commands "add-flow", "mod-flow", "del-flow".
+
+
+v1.10.0 - xx xxx xxxx
+---------------------
+ - Bridge compatibility support has been removed. Any uses that
+ rely on ovs-brcompatd will have to stick with Open vSwitch 1.9.x
+ or adapt to native Open vSwitch support (e.g. use ovs-vsctl instead
+ of brctl).
+ - The maximum size of the MAC learning table is now configurable.
+ - With the Linux datapath, packets for new flows are now queued
+ separately on a per-port basis, so it should no longer be
+ possible for a large number of new flows arriving on one port to
+ prevent new flows from being processed on other ports.
+ - ovs-vsctl:
+ * Previously ovs-vsctl would retry connecting to the database forever,
+ causing it to hang if ovsdb-server was not running. Now, ovs-vsctl
+ only tries once by default (use --retry to try forever). This change
+ means that you may want to remove uses of --timeout to avoid hangs
+ in ovs-vsctl calls.
+ * Many "ovs-vsctl" database commands now accept an --if-exists option.
+ Please refer to the ovs-vsctl manpage for details.
+ - OpenFlow:
+ - Experimental support for newer versions of OpenFlow. See
+ the "What versions of OpenFlow does Open vSwitch support?"
+ question in the FAQ for more details.
+ - The OpenFlow "dp_desc" may now be configured by setting the
+ value of other-config:dp-desc in the Bridge table.
+ - It is possible to request the OpenFlow port number with the
+ "ofport_request" column in the Interface table.
+ - The NXM flow_removed message now reports the OpenFlow table ID
+ from which the flow was removed.
+ - Tunneling:
+ - New support for the VXLAN tunnel protocol (see the IETF draft here:
+ http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-03).
+ - Tunneling requires the version of the kernel module paired with
+ Open vSwitch 1.9.0 or later.
+ - Inheritance of the Don't Fragment bit in IP tunnels (df_inherit)
+ is no longer supported.
+ - Path MTU discovery is no longer supported.
+ - CAPWAP tunneling support removed.
+ - Tunnels with multicast destination ports are no longer supported.
+ - ovs-dpctl:
+ - The "dump-flows" and "del-flows" no longer require an argument
+ if only one datapath exists.
+ - ovs-appctl:
+ - New "vlog/disable-rate-limit" and "vlog/enable-rate-limit"
+ commands available allow control over logging rate limits.
+ - New "dpif/dump-dps", "dpif/show", and "dpif/dump-flows" command
+ that mimic the equivalent ovs-dpctl commands.
+ - The ofproto library is now responsible for assigning OpenFlow port
+ numbers. An ofproto implementation should assign them when
+ port_construct() is called.
+ - All dpif-based bridges of a particular type share a common
+ datapath called "ovs-<type>", e.g. "ovs-system". The ovs-dpctl
+ commands will now return information on that shared datapath. To
+ get the equivalent bridge-specific information, use the new
+ "ovs-appctl dpif/*" commands.
+ - Backward-incompatible changes:
+ - Earlier Open vSwitch versions treated ANY as a wildcard in flow
+ syntax. OpenFlow 1.1 adds a port named ANY, which introduces a
+ conflict. ANY was rarely used in flow syntax, so we chose to
+ retire that meaning of ANY in favor of the OpenFlow 1.1 meaning.
+ - Patch ports no longer require kernel support, so they now work
+ with FreeBSD and the kernel module built into Linux 3.3 and later.
+
+
+v1.9.0 - 26 Feb 2013
+------------------------
+ - Datapath:
+ - Support for ipv6 set action.
+ - SKB mark matching and setting.
+ - support for Linux kernels up to 3.8
+ - FreeBSD is now a supported platform, thanks to code contributions from
+ Gaetano Catalli, Ed Maste, and Giuseppe Lettieri.
+ - ovs-bugtool: New --ovs option to report only OVS related information.
+ - New %t and %T log escapes to identify the subprogram within a
+ cooperating group of processes or threads that emitted a log message.
+ The default log patterns now include this information.
+ - OpenFlow:
+ - Allow bitwise masking for SHA and THA fields in ARP, SLL and TLL
+ fields in IPv6 neighbor discovery messages, and IPv6 flow label.
+ - Adds support for writing to the metadata field for a flow.
+ - Tunneling:
+ - The tunneling code no longer assumes input and output keys are
+ symmetric. If they are not, PMTUD needs to be disabled for
+ tunneling to work. Note this only applies to flow-based keys.
+ - New support for a nonstandard form of GRE that supports a 64-bit key.
+ - Tunnel Path MTU Discovery default value was set to 'disabled'.
+ This feature is deprecated and will be removed soon.
+ - Tunnel header caching removed.
+ - ovs-ofctl:
+ - Commands and actions that accept port numbers now also accept keywords
+ that represent those ports (such as LOCAL, NONE, and ALL). This is
+ also the recommended way to specify these ports, for compatibility
+ with OpenFlow 1.1 and later (which use the OpenFlow 1.0 numbers
+ for these ports for different purposes).
+ - ovs-dpctl:
+ - Support requesting the port number with the "port_no" option in
+ the "add-if" command.
+ - ovs-pki: The "online PKI" features have been removed, along with
+ the ovs-pki-cgi program that facilitated it, because of some
+ alarmist insecurity claims. We do not believe that these claims
+ are true, but because we do not know of any users for this
+ feature it seems better on balance to remove it. (The ovs-pki-cgi
+ program was not included in distribution packaging.)
+ - ovsdb-server now enforces the immutability of immutable columns. This
+ was not enforced in earlier versions due to an oversight.
+ - The following features are now deprecated. They will be removed no
+ earlier than February 2013. Please email dev@openvswitch.org with
+ concerns.
+ - Bridge compatibility.
+ - Stable bond mode.
+ - The autopath action.
+ - Interface type "null".
+ - Numeric values for reserved ports (see "ovs-ofctl" note above).
+ - Tunnel Path MTU Discovery.
+ - CAPWAP tunnel support.
+ - The data in the RARP packets can now be matched in the same way as the
+ data in ARP packets.
+
+
+v1.8.0 - 26 Feb 2013
+------------------------
+ *** Internal only release ***
+ - New FAQ. Please send updates and additions!
+ - Authors of controllers, please read the new section titled "Action
+ Reproduction" in DESIGN, which describes an Open vSwitch change in
+ behavior in corner cases that may affect some controllers.
+ - ovs-l3ping:
+ - A new test utility that can create L3 tunnel between two Open
+ vSwitches and detect connectivity issues.
+ - ovs-ofctl:
+ - New --sort and --rsort options for "dump-flows" command.
+ - "mod-port" command can now control all OpenFlow config flags.
+ - OpenFlow:
+ - Allow general bitwise masking for IPv4 and IPv6 addresses in
+ IPv4, IPv6, and ARP packets. (Previously, only CIDR masks
+ were allowed.)
+ - Allow support for arbitrary Ethernet masks. (Previously, only
+ the multicast bit in the destination address could be individually
+ masked.)
+ - New field OXM_OF_METADATA, to align with OpenFlow 1.1.
+ - The OFPST_QUEUE request now reports an error if a specified port or
+ queue does not exist, or for requests for a specific queue on all
+ ports, if the specified queue does not exist on any port. (Previous
+ versions generally reported an empty set of results.)
+ - New "flow monitor" feature to allow controllers to be notified of
+ flow table changes as they happen.
+ - Additional protocols are not mirrored and dropped when forward-bpdu is
+ false. For a full list, see the ovs-vswitchd.conf.db man page.
+ - Open vSwitch now sends RARP packets in situations where it previously
+ sent a custom protocol, making it consistent with behavior of QEMU and
+ VMware.
+ - All Open vSwitch programs and log files now show timestamps in UTC,
+ instead the local timezone, by default.
+
+
+v1.7.0 - 30 Jul 2012
+------------------------
+ - kernel modules are renamed. openvswitch_mod.ko is now
+ openvswitch.ko and brcompat_mod.ko is now brcompat.ko.
+ - Increased the number of NXM registers to 8.
+ - Added ability to configure DSCP setting for manager and controller
+ connections. By default, these connections have a DSCP value of
+ Internetwork Control (0xc0).
+ - Added the granular link health statistics, 'cfm_health', to an
+ interface.
+ - OpenFlow:
+ - Added support to mask nd_target for ICMPv6 neighbor discovery flows.
+ - Added support for OpenFlow 1.3 port description (OFPMP_PORT_DESC)
+ multipart messages.
+ - ovs-ofctl:
+ - Added the "dump-ports-desc" command to retrieve port
+ information using the new port description multipart messages.
+ - ovs-test:
+ - Added support for spawning ovs-test server from the client.
+ - Now ovs-test is able to automatically create test bridges and ports.
+ - "ovs-dpctl dump-flows" now prints observed TCP flags in TCP flows.
+ - Tripled flow setup performance.
+ - The "coverage/log" command previously available through ovs-appctl
+ has been replaced by "coverage/show". The new command replies with
+ coverage counter values, instead of logging them.
+
+
+v1.6.1 - 25 Jun 2012
------------------------
+ - Allow OFPP_CONTROLLER as the in_port for packet-out messages.
+
+
+v1.6.0 - 24 Feb 2012
+------------------------
+ *** Internal only release ***
+ - bonding
+ - LACP bonds no longer fall back to balance-slb when negotiations fail.
+ Instead they drop traffic.
+ - The default bond_mode changed from SLB to active-backup, to protect
+ unsuspecting users from the significant risks of SLB bonds (which are
+ documented in vswitchd/INTERNALS).
+ - Load balancing can be disabled by setting the bond-rebalance-interval
+ to zero.
+ - OpenFlow:
+ - Added support for bitwise matching on TCP and UDP ports.
+ See ovs-ofctl(8) for more information.
+ - NXM flow dumps now include times elapsed toward idle and hard
+ timeouts.
+ - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
+ controllers more precise control over which OpenFlow messages they
+ receive asynchronously.
+ - New "fin_timeout" action.
+ - Added "fin_timeout" support to "learn" action.
+ - New Nicira action NXAST_CONTROLLER that offers additional features
+ over output to OFPP_CONTROLLER.
+ - When QoS settings for an interface do not configure a default queue
+ (queue 0), Open vSwitch now uses a default configuration for that
+ queue, instead of dropping all packets as in previous versions.
+ - Logging:
+ - Logging to console and file will have UTC timestamp as a default for
+ all the daemons. An example of the default format is
+ 2012-01-27T16:35:17Z. ovs-appctl can be used to change the default
+ format as before.
+ - The syntax of commands and options to set log levels was simplified,
+ to make it easier to remember.
+ - New support for limiting the number of flows in an OpenFlow flow
+ table, with configurable policy for evicting flows upon
+ overflow. See the Flow_Table table in ovs-vswitch.conf.db(5)
+ for more information.
+ - New "enable-async-messages" column in the Controller table. If set to
+ false, OpenFlow connections to the controller will initially have all
+ asynchronous messages disabled, overriding normal OpenFlow behavior.
+ - ofproto-provider interface:
+ - "struct rule" has a new member "used" that ofproto implementations
+ should maintain by updating with ofproto_rule_update_used().
+ - ovsdb-client:
+ - The new option --timestamp causes the "monitor" command to print
+ a timestamp with every update.
+ - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
+
+
+v1.5.0 - 01 Jun 2012
+------------------------
+ - OpenFlow:
+ - Added support for querying, modifying, and deleting flows
+ based on flow cookie when using NXM.
+ - Added new NXM_PACKET_IN format.
+ - Added new NXAST_DEC_TTL action.
+ - ovs-ofctl:
+ - Added daemonization support to the monitor and snoop commands.
+ - ovs-vsctl:
+ - The "find" command supports new set relational operators
+ {=}, {!=}, {<}, {>}, {<=}, and {>=}.
+ - ovsdb-tool now uses the typical database and schema installation
+ directories as defaults.
+ - The default MAC learning timeout has been increased from 60 seconds
+ to 300 seconds. The MAC learning timeout is now configurable.
-v1.4.0 - xx xxx xxxx
+v1.4.0 - 30 Jan 2012
------------------------
+ - Compatible with Open vSwitch kernel module included in Linux 3.3.
- New "VLAN splinters" feature to work around buggy device drivers
in old Linux versions. (This feature is deprecated. When
broken device drivers are no longer in widespread use, we will
and connectivity issues. This tool currently is not included in RH or
Xen packages.
- RHEL packaging now supports integration with Red Hat network scripts.
+ - bonding:
+ - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
+ to active-backup. SLB bonds carry significant risks with them
+ (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
+ users from running into. Users are advised to update any scripts or
+ configuration which may be negatively impacted by explicitly setting
+ the bond mode which they want to use.
-v1.3.0 - xx xxx xxxx
+v1.3.0 - 09 Dec 2011
------------------------
- OpenFlow:
- Added an OpenFlow extension which allows the "output" action to accept
via "ip_frag" in ovs-ofctl).
- New ovs-ofctl "get-frags" and "set-frags" commands to get and set
fragment handling policy.
- - CAPWAP tunneling now supports an extension to transport a 64-key. By
- default it remains compatible with the old version and other
+ - CAPWAP tunneling now supports an extension to transport a 64-bit key.
+ By default it remains compatible with the old version and other
standards-based implementations.
- Flow setups are now processed in a round-robin manner across ports
to prevent any single client from monopolizing the CPU and conducting