NEWS

   1 post-v1.6.0
   2 ------------------------
   3
   4
   5 v1.6.0 - xx xxx xxxx
   6 ------------------------
   7     - bonding
   8         - LACP bonds no longer fall back to balance-slb when negotiations fail.
   9           Instead they drop traffic.
  10         - The default bond_mode changed from SLB to active-backup, to protect
  11           unsuspecting users from the significant risks of SLB bonds (which are
  12           documented in vswitchd/INTERNALS).
  13         - Load balancing can be disabled by setting the bond-rebalance-interval
  14           to zero.
  15     - OpenFlow:
  16         - Added support for bitwise matching on TCP and UDP ports.
  17           See ovs-ofctl(8) for more information.
  18         - NXM flow dumps now include times elapsed toward idle and hard
  19           timeouts.
  20         - Added an OpenFlow extension NXT_SET_ASYNC_CONFIG that allows
  21           controllers more precise control over which OpenFlow messages they
  22           receive asynchronously.
  23         - New "fin_timeout" action.
  24         - Added "fin_timeout" support to "learn" action.
  25         - New Nicira action NXAST_CONTROLLER that offers additional features
  26           over output to OFPP_CONTROLLER.
  27     - The default MAC learning timeout has been increased from 60 seconds
  28       to 300 seconds.  The MAC learning timeout is now configurable.
  29     - When QoS settings for an interface do not configure a default queue
  30       (queue 0), Open vSwitch now uses a default configuration for that
  31       queue, instead of dropping all packets as in previous versions.
  32     - Logging:
  33         - Logging to console and file will have UTC timestamp as a default for
  34           all the daemons. An example of the default format is
  35           2012-01-27T16:35:17Z.  ovs-appctl can be used to change the default
  36           format as before.
  37         - The syntax of commands and options to set log levels was simplified,
  38           to make it easier to remember.
  39     - New support for limiting the number of flows in an OpenFlow flow
  40       table, with configurable policy for evicting flows upon
  41       overflow.  See the Flow_Table table in ovs-vswitch.conf.db(5)
  42       for more information.
  43     - New "enable-async-messages" column in the Controller table.  If set to
  44       false, OpenFlow connections to the controller will initially have all
  45       asynchronous messages disabled, overriding normal OpenFlow behavior.
  46     - ofproto-provider interface:
  47         - "struct rule" has a new member "used" that ofproto implementations
  48           should maintain by updating with ofproto_rule_update_used().
  49     - ovsdb-client:
  50         - The new option --timestamp causes the "monitor" command to print
  51           a timestamp with every update.
  52     - CFM module CCM broadcasts can now be tagged with an 802.1p priority.
  53
  54
  55 v1.5.0 - xx xxx xxxx
  56 ------------------------
  57     - OpenFlow:
  58         - Added support for querying, modifying, and deleting flows
  59           based on flow cookie when using NXM.
  60         - Added new NXM_PACKET_IN format.
  61         - Added new NXAST_DEC_TTL action.
  62     - ovs-ofctl:
  63         - Added daemonization support to the monitor and snoop commands.
  64     - ovs-vsctl:
  65         - The "find" command supports new set relational operators
  66           {=}, {!=}, {<}, {>}, {<=}, and {>=}.
  67     - ovsdb-tool now uses the typical database and schema installation
  68       directories as defaults.
  69
  70
  71 v1.4.0 - 30 Jan 2012
  72 ------------------------
  73     - Compatible with Open vSwitch kernel module included in Linux 3.3.
  74     - New "VLAN splinters" feature to work around buggy device drivers
  75       in old Linux versions.  (This feature is deprecated.  When
  76       broken device drivers are no longer in widespread use, we will
  77       delete this feature.)  See ovs-vswitchd.conf.db(5) for more
  78       information.
  79     - OpenFlow:
  80        - Added ability to match on IPv6 flow label through NXM.
  81        - Added ability to match on ECN bits in IPv4 and IPv6 through NXM.
  82        - Added ability to match on TTL in IPv4 and IPv6 through NXM.
  83        - Added ability to modify ECN bits in IPv4.
  84        - Added ability to modify TTL in IPv4.
  85     - ovs-vswitchd:
  86        - Don't require the "normal" action to use mirrors.  Traffic will
  87          now be properly mirrored for any flows, regardless of their
  88          actions.
  89        - Track packet and byte statistics sent on mirrors.
  90        - The sFlow implementation can now usually infer the correct agent
  91          device instead of having to be told explicitly.
  92     - ovs-appctl:
  93       - New "fdb/flush" command to flush bridge's MAC learning table.
  94     - ovs-test:
  95       - A new distributed testing tool that allows one to diagnose performance
  96         and connectivity issues. This tool currently is not included in RH or
  97         Xen packages.
  98     - RHEL packaging now supports integration with Red Hat network scripts.
  99     - bonding:
 100       - Post 1.4.*, OVS will be changing the default bond mode from balance-slb
 101         to active-backup.  SLB bonds carry significant risks with them
 102         (documented vswitchd/INTERNALS) which we want to prevent unsuspecting
 103         users from running into.  Users are advised to update any scripts or
 104         configuration which may be negatively impacted by explicitly setting
 105         the bond mode which they want to use.
 106
 107
 108 v1.3.0 - 09 Dec 2011
 109 ------------------------
 110     - OpenFlow:
 111       - Added an OpenFlow extension which allows the "output" action to accept
 112         NXM fields.
 113       - Added an OpenFlow extension for flexible learning.
 114       - Bumped number of NXM registers from four to five.
 115     - ovs-appctl:
 116       - New "version" command to determine version of running daemon.
 117       - If no argument is provided for "cfm/show", displays detailed
 118         information about all interfaces with CFM enabled.
 119       - If no argument is provided for "lacp/show", displays detailed
 120         information about all ports with LACP enabled.
 121     - ovs-dpctl:
 122       - New "set-if" command to modify a datapath port's configuration.
 123     - ovs-vswitchd:
 124       - The software switch now supports 255 OpenFlow tables, instead
 125         of just one.  By default, only table 0 is consulted, but the
 126         new NXAST_RESUBMIT_TABLE action can look up in additional
 127         tables.  Tables 128 and above are reserved for use by the
 128         switch itself; please use only tables 0 through 127.
 129       - Add support for 802.1D spanning tree (STP).
 130     - Fragment handling extensions:
 131       - New OFPC_FRAG_NX_MATCH fragment handling mode, in which L4
 132         fields are made available for matching in fragments with
 133         offset 0.
 134       - New NXM_NX_IP_FRAG match field for matching IP fragments (usable
 135         via "ip_frag" in ovs-ofctl).
 136       - New ovs-ofctl "get-frags" and "set-frags" commands to get and set
 137         fragment handling policy.
 138     - CAPWAP tunneling now supports an extension to transport a 64-bit key.
 139       By default it remains compatible with the old version and other
 140       standards-based implementations.
 141     - Flow setups are now processed in a round-robin manner across ports
 142       to prevent any single client from monopolizing the CPU and conducting
 143       a denial of service attack.
 144     - Added support for native VLAN tagging.  A new "vlan_mode"
 145       parameter can be set for "port". Possible values: "access",
 146       "trunk", "native-tagged" and "native-untagged".
 147     - test-openflowd has been removed.  Please use ovs-vswitchd instead.
 148
 149 v1.2.0 - 03 Aug 2011
 150 ------------------------
 151     - New "ofproto" abstraction layer to ease porting to hardware
 152       switching ASICs.
 153     - Packaging for Red Hat Enterprise Linux 5.6 and 6.0.
 154     - Datapath support for Linux kernels up to 3.0.
 155     - OpenFlow:
 156       - New "bundle" and "bundle_load" action extensions.
 157     - Database:
 158       - Implement table unique constraints.
 159       - Support cooperative locking between callers.
 160     - ovs-dpctl:
 161       - New "-s" option for "show" command prints packet and byte
 162         counters for each port.
 163     - ovs-ofctl:
 164       - New "--readd" option for "replace-flows".
 165     - ovs-vsctl:
 166       - New "show" command to print an overview of configuration.
 167       - New "comment" command to add remark that explains intentions.
 168     - ovs-brcompatd has been rewritten to fix long-standing bugs.
 169     - ovs-openflowd has been renamed test-openflowd and moved into the
 170       tests directory.  Its presence confused too many users.  Please
 171       use ovs-vswitchd instead.
 172     - New ovs-benchmark utility to test flow setup performance.
 173     - A new log level "off" has been added.  Configuring a log facility
 174       "off" prevents any messages from being logged to it.  Previously,
 175       "emer" was effectively "off" because no messages were ever logged at
 176       level "emer".  Now, errors that cause a process to exit are logged
 177       at "emer" level.
 178     - "configure" option --with-l26 has been renamed --with-linux, and
 179       --with-l26-source has been renamed --with-linux-source.  The old
 180       names will be removed after the next release, so please update
 181       your scripts.
 182     - The "-2.6" suffix has been dropped from the datapath/linux-2.6 and
 183       datapath/linux-2.6/compat-2.6 directories.
 184     - Feature removals:
 185       - Dropped support for "tun_id_from_cookie" OpenFlow extension.
 186            Please use the extensible match extensions instead.
 187       - Removed the Maintenance_Point and Monitor tables in an effort
 188         to simplify 802.1ag configuration.
 189     - Performance and scalability improvements
 190     - Bug fixes
 191
 192 v1.1.0 - 05 Apr 2011
 193 ------------------------
 194     - Ability to define policies over IPv6
 195     - LACP
 196     - 802.1ag CCM
 197     - Support for extensible match extensions to OpenFlow
 198     - QoS:
 199       - Support for HFSC qdisc.
 200       - Queue used by in-band control can now be configured.
 201     - Kernel:
 202       - Kernel<->userspace interface has been reworked and should be
 203         close to a stable ABI now.
 204       - "Port group" concept has been dropped.
 205     - GRE over IPSEC tunnels
 206     - Bonding:
 207       - New active backup bonding mode.
 208       - New L4 hashing support when LACP is enabled.
 209       - Source MAC hash now includes VLAN field also.
 210       - miimon support.
 211     - Greatly improved handling of large flow tables
 212     - ovs-dpctl:
 213       - "show" command now prints full vport configuration.
 214       - "dump-groups" command removed since kernel support for
 215         port groups was dropped.
 216     - ovs-vsctl:
 217       - New commands for working with the new Managers table.
 218       - "list" command enhanced with new formatting options and --columns
 219         option.
 220       - "get" command now accepts new --id option.
 221       - New "find" command.
 222     - ovs-ofctl:
 223       - New "queue-stats" command for printing queue stats.
 224       - New commands "replace-flows" and "diff-flows".
 225       - Commands to add and remove flows can now read from files.
 226       - New --flow-format option to enable or disable NXM.
 227       - New --more option to increase OpenFlow message verbosity.
 228       - Removed "tun-cookie" command, which is no longer useful.
 229     - ovs-controller enhancements for testing various features.
 230     - New ovs-vlan-test command for testing for Linux kernel driver VLAN
 231       bugs.  New ovs-vlan-bug-workaround command for enabling and
 232       disabling a workaround for these driver bugs.
 233     - OpenFlow support:
 234       - "Resubmit" actions now update flow statistics.
 235       - New "register" extension for use in matching and actions, via NXM.
 236       - New "multipath" experimental action extension.
 237       - New support for matching multicast Ethernet frames, via NXM.
 238       - New extension for OpenFlow vendor error codes.
 239       - New extension to set the QoS output queue without actually
 240         sending to an output port.
 241       - Open vSwitch now reports a single flow table, instead of
 242         separate hash and wildcard tables.  This better models the
 243         current implementation.
 244       - New experimental "note" action.
 245       - New "ofproto/trace" ovs-appctl command and associated utilities
 246         to ease debugging complex flow tables.
 247     - Database:
 248       - Schema documentation now includes an entity-relationship diagram.
 249       - The database is now garbage collected.  In most tables,
 250         unreferenced rows will be deleted automatically.
 251       - Many tables now include statistics updated periodically by
 252         ovs-vswitchd or ovsdb-server.
 253       - Every table now has an "external-ids" column for use by OVS
 254         integrators.
 255       - There is no default controller anymore.  Each bridge must have its
 256         controller individually specified.
 257       - The "fail-mode" is now a property of a Bridge instead of a Controller.
 258       - New versioning and checksum features.
 259       - New Managers table and manager_options column in Open_vSwitch table
 260         for specifying managers.  The old "managers" column in the
 261         Open_vSwitch table has been removed.
 262       - Many "name" columns are now immutable.
 263     - Feature removals:
 264       - Dropped support for XenServer pre-5.6.100.
 265       - Dropped support for Linux pre-2.6.18.
 266       - Dropped controller discovery support.
 267       - Dropped "ovs-ofctl status" and the OpenFlow extension that it used.
 268         Statistics reporting in the database is a rough equivalent.
 269       - Dropped the "corekeeper" package (now separate, at
 270         http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper).
 271     - Performance and scalability improvements
 272     - Bug fixes
 273
 274 v1.1.0pre2 - 13 Sep 2010
 275 ------------------------
 276     - Bug fixes
 277
 278 v1.1.0pre1 - 31 Aug 2010
 279 ------------------------
 280     - OpenFlow 1.0 slicing (QoS) functionality
 281     - Python bindings for configuration database (no write support)
 282     - Performance and scalability improvements
 283     - Bug fixes
 284
 285 v1.0.1 - 31 May 2010
 286 --------------------
 287     - New "patch" interface type
 288     - Bug fixes
 289
 290 v1.0.0 - 15 May 2010
 291 --------------------
 292     - Configuration database with remote management
 293     - OpenFlow 1.0
 294     - GRE tunneling
 295     - Support for XenServer 5.5 and 5.6
 296     - Performance and scalability improvements
 297     - Bug fixes
 298
 299 v0.99.2 - 18 Feb 2010
 300 ---------------------
 301     - Bug fixes
 302
 303 v0.99.1 - 25 Jan 2010
 304 ---------------------
 305     - Add support for sFlow(R)
 306     - Make headers compatible with C++
 307     - Bug fixes
 308
 309 v0.99.0 - 14 Jan 2010
 310 ---------------------
 311     - User-space forwarding engine
 312     - Bug fixes
 313
 314 v0.90.7 - 29 Nov 2009
 315 ---------------------
 316     - Add support for NetFlow active timeouts
 317     - Bug fixes
 318
 319 v0.90.6 - 6 Oct 2009
 320 --------------------
 321     - Bug fixes
 322
 323 v0.90.5 - 21 Sep 2009
 324 ---------------------
 325     - Generalize in-band control to more diverse network setups
 326     - Bug fixes