ovs-vsctl(8)

NAME
ovs-vsctl - utility for querying and configuring ovs-vswitchd

SYNOPSIS
ovs-vsctl [options] -- [options] command [args] [-- [options] command [args]]...

DESCRIPTION
The ovs-vsctl program configures ovs-vswitchd(8) by providing a high-level interface to its configuration database. See ovs-vswitchd.conf.db(5) for comprehensive documentation of the database schema.

ovs-vsctl connects to an ovsdb-server process that maintains an Open vSwitch configuration database. Using this connection, it queries and possibly applies changes to the database, depending on the supplied commands. Then, if it applied any changes, by default it waits until ovs-vswitchd has finished reconfiguring itself before it exits. (If you use ovs-vsctl when ovs-vswitchd is not running, use --no-wait.)

ovs-vsctl can perform any number of commands in a single run, implemented as a single atomic transaction against the database.

The ovs-vsctl command line begins with global options (see OPTIONS below for details). The global options are followed by one or more commands. Each command should begin with -- by itself as a command-line argument, to separate it from the following commands. (The -- before the first command is optional.) The command itself starts with command-specific options, if any, followed by the command name and any arguments. See EXAMPLES below for syntax examples.

  Linux VLAN Bridging Compatibility
The ovs-vsctl program supports the model of a bridge implemented by Open vSwitch, in which a single bridge supports ports on multiple VLANs. In this model, each port on a bridge is either a trunk port that potentially passes packets tagged with 802.1Q headers that designate VLANs or it is assigned a single implicit VLAN that is never tagged with an 802.1Q header.

For compatibility with software designed for the Linux bridge, ovs-vsctl also supports a model in which traffic associated with a given 802.1Q VLAN is segregated into a separate bridge. A special form of the add-br command (see below) creates a ``fake bridge'' within an Open vSwitch bridge to simulate this behavior. When such a ``fake bridge'' is active, ovs-vsctl will treat it much like a bridge separate from its ``parent bridge,'' but the actual implementation in Open vSwitch uses only a single bridge, with ports on the fake bridge assigned the implicit VLAN of the fake bridge of which they are members. (A fake bridge for VLAN 0 receives packets that have no 802.1Q tag or a tag with VLAN 0.)

OPTIONS
The following options affect the behavior ovs-vsctl as a whole. Some individual commands also accept their own options, which are given just before the command name. If the first command on the command line has options, then those options must be separated from the global options by --.

--db=server
    Sets server as the database server that ovs-vsctl contacts to query or modify configuration. server may be an OVSDB active or passive connection method, as described in ovsdb(7). The default is unix:@RUNDIR@/db.sock.

--no-wait
    Prevents ovs-vsctl from waiting for ovs-vswitchd to reconfigure itself according to the modified database. This option should be used if ovs-vswitchd is not running; otherwise, ovs-vsctl will not exit until ovs-vswitchd starts.

    This option has no effect if the commands specified do not change the database.

--no-syslog
    By default, ovs-vsctl logs its arguments and the details of any changes that it makes to the system log. This option disables this logging.

    This option is equivalent to --verbose=vsctl:syslog:warn.

--oneline
    Modifies the output format so that the output for each command is printed on a single line. New-line characters that would otherwise separate lines are printed as \n, and any instances of \ that would otherwise appear in the output are doubled. Prints a blank line for each command that has no output. This option does not affect the formatting of output from the list or find commands; see Table Formatting Options below.

--dry-run
    Prevents ovs-vsctl from actually modifying the database.

-t secs
    By default, or with a secs of 0, ovs-vsctl waits forever for a response from the database. This option limits runtime to approximately secs seconds. If the timeout expires, ovs-vsctl will exit with a SIGALRM signal. (A timeout would normally happen only if the database cannot be contacted, or if the system is overloaded.)

--retry
    Without this option, if ovs-vsctl connects outward to the database server (the default) then ovs-vsctl will try to connect once and exit with an error if the connection fails (which usually means that ovsdb-server is not running).

    With this option, or if --db specifies that ovs-vsctl should listen for an incoming connection from the database server, then ovs-vsctl will wait for a connection to the database forever.

    Regardless of this setting, --timeout always limits how long ovs-vsctl will wait.

  Table Formatting Options
These options control the format of output from the list and find commands.

  Public Key Infrastructure Options

COMMANDS
The commands implemented by ovs-vsctl are described in the sections below.

  Open vSwitch Commands
These commands work with an Open vSwitch as a whole.

init
    Initializes the Open vSwitch database, if it is empty. If the database has already been initialized, this command has no effect.

    Any successful ovs-vsctl command automatically initializes the Open vSwitch database if it is empty. This command is provided to initialize the database without executing any other command.

show
    Prints a brief overview of the database contents.

emer-reset
    Reset the configuration into a clean state. It deconfigures OpenFlow controllers, OVSDB servers, and SSL, and deletes port mirroring, fail_mode, NetFlow, sFlow, and IPFIX configuration. This command also removes all other-config keys from all database records, except that other-config:hwaddr is preserved if it is present in a Bridge record. Other networking configuration is left as-is.

  Bridge Commands
These commands examine and manipulate Open vSwitch bridges.

[--may-exist] add-br bridge
    Creates a new bridge named bridge. Initially the bridge will have no ports (other than bridge itself).

    Without --may-exist, attempting to create a bridge that exists is an error. With --may-exist, this command does nothing if bridge already exists as a real bridge.

[--may-exist] add-br bridge parent vlan
    Creates a ``fake bridge'' named bridge within the existing Open vSwitch bridge parent, which must already exist and must not itself be a fake bridge. The new fake bridge will be on 802.1Q VLAN vlan, which must be an integer between 0 and 4095. The parent bridge must not already have a fake bridge for vlan. Initially bridge will have no ports (other than bridge itself).

    Without --may-exist, attempting to create a bridge that exists is an error. With --may-exist, this command does nothing if bridge already exists as a VLAN bridge under parent for vlan.

[--if-exists] del-br bridge
    Deletes bridge and all of its ports. If bridge is a real bridge, this command also deletes any fake bridges that were created with bridge as parent, including all of their ports.

    Without --if-exists, attempting to delete a bridge that does not exist is an error. With --if-exists, attempting to delete a bridge that does not exist has no effect.

[--real|--fake] list-br
    Lists all existing real and fake bridges on standard output, one per line. With --real or --fake, only bridges of that type are returned.

br-exists bridge
    Tests whether bridge exists as a real or fake bridge. If so, ovs-vsctl exits successfully with exit code 0. If not, ovs-vsctl exits unsuccessfully with exit code 2.

br-to-vlan bridge
    If bridge is a fake bridge, prints the bridge's 802.1Q VLAN as a decimal integer. If bridge is a real bridge, prints 0.

br-to-parent bridge
    If bridge is a fake bridge, prints the name of its parent bridge. If bridge is a real bridge, print bridge.

br-set-external-id bridge key [value]
    Sets or clears an ``external ID'' value on bridge. These values are intended to identify entities external to Open vSwitch with which bridge is associated, e.g. the bridge's identifier in a virtualization management platform. The Open vSwitch database schema specifies well-known key values, but key and value are otherwise arbitrary strings.

    If value is specified, then key is set to value for bridge, overwriting any previous value. If value is omitted, then key is removed from bridge's set of external IDs (if it was present).

    For real bridges, the effect of this command is similar to that of a set or remove command in the external-ids column of the Bridge table. For fake bridges, it actually modifies keys with names prefixed by fake-bridge- in the Port table.

br-get-external-id bridge [key]
    Queries the external IDs on bridge. If key is specified, the output is the value for that key or the empty string if key is unset. If key is omitted, the output is key=value, one per line, for each key-value pair.

    For real bridges, the effect of this command is similar to that of a get command in the external-ids column of the Bridge table. For fake bridges, it queries keys with names prefixed by fake-bridge- in the Port table.

  Port Commands
These commands examine and manipulate Open vSwitch ports. These commands treat a bonded port as a single entity.

list-ports bridge
    Lists all of the ports within bridge on standard output, one per line. The local port bridge is not included in the list.

[--may-exist] add-port bridge port [column[:key]=value]...
    Creates on bridge a new port named port from the network device of the same name.

    Optional arguments set values of column in the Port record created by the command. For example, tag=9 would make the port an access port for VLAN 9. The syntax is the same as that for the set command (see Database Commands below).

    Without --may-exist, attempting to create a port that exists is an error. With --may-exist, this command does nothing if port already exists on bridge and is not a bonded port.

[--if-exists] del-port [bridge] port
    Deletes port. If bridge is omitted, port is removed from whatever bridge contains it; if bridge is specified, it must be the real or fake bridge that contains port.

    Without --if-exists, attempting to delete a port that does not exist is an error. With --if-exists, attempting to delete a port that does not exist has no effect.

[--if-exists] --with-iface del-port [bridge] iface
    Deletes the port named iface or that has an interface named iface. If bridge is omitted, the port is removed from whatever bridge contains it; if bridge is specified, it must be the real or fake bridge that contains the port.

    Without --if-exists, attempting to delete the port for an interface that does not exist is an error. With --if-exists, attempting to delete the port for an interface that does not exist has no effect.

port-to-br port
    Prints the name of the bridge that contains port on standard output.

  Bond Commands
These commands work with ports that have more than one interface, which Open vSwitch calls ``bonds.''

[--fake-iface] add-bond bridge port iface... [column[:key]=value]...
    Creates on bridge a new port named port that bonds together the network devices given as each iface. At least two interfaces must be named. If the interfaces are DPDK enabled then the transaction will need to include operations to explicitly set the interface type to 'dpdk'.

    Optional arguments set values of column in the Port record created by the command. The syntax is the same as that for the set command (see Database Commands below).

    With --fake-iface, a fake interface with the name port is created. This should only be used for compatibility with legacy software that requires it.

    Without --may-exist, attempting to create a port that exists is an error. With --may-exist, this command does nothing if port already exists on bridge and bonds together exactly the specified interfaces.

[--may-exist] add-bond-iface bond iface
    Adds iface as a new bond interface to the existing port bond. If bond previously had only one port, this transforms it into a bond.

    Without --may-exist, attempting to add an iface that is already part of bond is an error. With --may-exist, this command does nothing if iface is already part of bond. (It is still an error if iface is an interface of some other port or bond.)

[--if-exists] del-bond-iface [bond] iface
    Removes iface from its port. If bond is omitted, iface is removed from whatever port contains it; if bond is specified, it must be the port that contains bond.

    If removing iface causes its port to have only a single interface, then that port transforms from a bond into an ordinary port. It is an error if iface is the only interface in its port.

    Without --if-exists, attempting to delete an interface that does not exist is an error. With --if-exists, attempting to delete an interface that does not exist has no effect.

  Interface Commands
These commands examine the interfaces attached to an Open vSwitch bridge. These commands treat a bonded port as a collection of two or more interfaces, rather than as a single port.

list-ifaces bridge
    Lists all of the interfaces within bridge on standard output, one per line. The local port bridge is not included in the list.

iface-to-br iface
    Prints the name of the bridge that contains iface on standard output.

  Conntrack Zone Commands
These commands query and modify datapath CT zones, Timeout Policies and Limits.

[--may-exist] add-zone-tp datapath zone=zone_id policies
    Creates a conntrack zone timeout policy with zone_id in datapath. The policies consist of key=value pairs, separated by spaces. For example, icmp_first=30 icmp_reply=60 specifies a 30-second timeout policy for the first ICMP packet and a 60-second policy for ICMP reply packets. See the CT_Timeout_Policy table in ovs-vswitchd.conf.db(5) for the supported keys.

    Without --may-exist, attempting to add a policy for zone_id that already has a policy is an error.
     With --may-exist, this command does nothing if policy for
     zone_id already exists.

[--if-exists] del-zone-tp datapath zone=zone_id
    Delete the timeout policy associated with zone_id from datapath.

    Without --if-exists, attempting to delete a policy for zone that does not exist or doesn't have a policy is an error. With --if-exists, attempting to delete a a policy that does not exist has no effect.

list-zone-tp datapath
    Prints the timeout policies of all zones in datapath.

set-zone-limit datapath zone_id|default zone_limit
    Sets a conntrack zone limit with zone_id|default in datapath. The limit with value 0 means unlimited.

[--if-exists] del-zone-limit datapath zone_id|default
    Delete the limit associated with zone_id from datapath.

    Without --if-exists, attempting to delete a limit for zone that does not exist or doesn't have a limit is an error. With --if-exists, attempting to delete a limit that does not exist has no effect.

list-zone-limits datapath
    Prints the limits of all zones in datapath.

  Datapath Capabilities Command
The command query datapath capabilities.

list-dp-cap datapath
    Prints the datapath's capabilities.

  OpenFlow Controller Connectivity
ovs-vswitchd can perform all configured bridging and switching locally, or it can be configured to communicate with one or more external OpenFlow controllers. The switch is typically configured to connect to a primary controller that takes charge of the bridge's flow table to implement a network policy. In addition, the switch can be configured to listen to connections from service controllers. Service controllers are typically used for occasional support and maintenance, e.g. with ovs-ofctl.

get-controller bridge
    Prints the configured controller target.

del-controller bridge
    Deletes the configured controller target.

set-controller bridge target...
    Sets the configured controller target or targets. Each target may use any of the following forms:

When a controller is configured, it is, ordinarily, responsible for setting up all flows on the switch. Thus, if the connection to the controller fails, no new network connections can be set up. If the connection to the controller stays down long enough, no packets can pass through the switch at all.

If the value is standalone, or if neither of these settings is set, ovs-vswitchd will take over responsibility for setting up flows when no message has been received from the controller for three times the inactivity probe interval. In this mode, ovs-vswitchd causes the datapath to act like an ordinary MAC-learning switch. ovs-vswitchd will continue to retry connecting to the controller in the background and, when the connection succeeds, it discontinues its standalone behavior.

If this option is set to secure, ovs-vswitchd will not set up flows on its own when the controller connection fails.

get-fail-mode bridge
    Prints the configured failure mode.

del-fail-mode bridge
    Deletes the configured failure mode.

set-fail-mode bridge standalone|secure
    Sets the configured failure mode.

  Manager Connectivity
These commands manipulate the manager_options column in the Open_vSwitch table and rows in the Managers table. When ovsdb-server is configured to use the manager_options column for OVSDB connections (as described in the startup scripts provided with Open vSwitch; the corresponding ovsdb-server command option is --remote=db:Open_vSwitch,Open_vSwitch,manager_options), this allows the administrator to use ovs-vsctl to configure database connections.

get-manager
    Prints the configured manager(s).

del-manager
    Deletes the configured manager(s).

set-manager target...
    Sets the configured manager target or targets. Each target may be an OVSDB active or passive connection method, e.g. pssl:6640, as described in ovsdb(7).

  SSL Configuration
When ovs-vswitchd is configured to connect over SSL for management or controller connectivity, the following parameters are required:

private-key
    Specifies a PEM file containing the private key used as the virtual switch's identity for SSL connections to the controller.

certificate
    Specifies a PEM file containing a certificate, signed by the certificate authority (CA) used by the controller and manager, that certifies the virtual switch's private key, identifying a trustworthy switch.

ca-cert
    Specifies a PEM file containing the CA certificate used to verify that the virtual switch is connected to a trustworthy controller.

These files are read only once, at ovs-vswitchd startup time. If their contents change, ovs-vswitchd must be killed and restarted.

These SSL settings apply to all SSL connections made by the virtual switch.

get-ssl
    Prints the SSL configuration.

del-ssl
    Deletes the current SSL configuration.

[--bootstrap] set-ssl private-key certificate ca-cert
    Sets the SSL configuration. The --bootstrap option is described below.

Ordinarily, all of the files named in the SSL configuration must exist when ovs-vswitchd starts. However, if the ca-cert file does not exist and the --bootstrap option is given, then ovs-vswitchd will attempt to obtain the CA certificate from the controller on its first SSL connection and save it to the named PEM file. If it is successful, it will immediately drop the connection and reconnect, and from then on all SSL connections must be authenticated by a certificate signed by the CA certificate thus obtained.

This option exposes the SSL connection to a man-in-the-middle attack obtaining the initial CA certificate, but it may be useful for bootstrapping.

This option is only useful if the controller sends its CA certificate as part of the SSL certificate chain. The SSL protocol does not require the controller to send the CA certificate.

  Auto-Attach Commands
The IETF Auto-Attach SPBM draft standard describes a compact method of using IEEE 802.1AB Link Layer Discovery Protocol (LLDP) together with a IEEE 802.1aq Shortest Path Bridging (SPB) network to automatically attach network devices to individual services in a SPB network. The intent here is to allow network applications and devices using OVS to be able to easily take advantage of features offered by industry standard SPB networks. A fundamental element of the Auto-Attach feature is to map traditional VLANs onto SPB I_SIDs. These commands manage the Auto-Attach I-SID/VLAN mappings.

add-aa-mapping bridge i-sid vlan
    Creates a new Auto-Attach mapping on bridge for i-sid and vlan.

del-aa-mapping bridge i-sid vlan
    Deletes an Auto-Attach mapping on bridge for i-sid and vlan.

get-aa-mapping bridge
    Lists all of the Auto-Attach mappings within bridge on standard output.

  Database Commands
These commands query and modify the contents of ovsdb tables. They are a slight abstraction of the ovsdb interface and as such they operate at a lower level than other ovs-vsctl commands.

Each of these commands has a table parameter to identify a table within the database. Many of them also take a record parameter that identifies a particular record within a table. The record parameter may be the UUID for a record, and many tables offer additional ways to identify records. Some commands also take column parameters that identify a particular field within the records in a table.

For a list of tables and their columns, see ovs-vswitchd.conf.db(5) or see the table listing from the --help option.

Record names must be specified in full and with correct capitalization, except that UUIDs may be abbreviated to their first 4 (or more) hex digits, as long as that is unique within the table. Names of tables and columns are not case-sensitive, and - and _ are treated interchangeably. Unique abbreviations of table and column names are acceptable, e.g. net or n is sufficient to identify the NetFlow table.

EXAMPLES
Create a new bridge named br0 and add port eth0 to it:

    ovs-vsctl add-br br0
    ovs-vsctl add-port br0 eth0

Alternatively, perform both operations in a single atomic transaction:

    ovs-vsctl add-br br0 -- add-port br0 eth0

Delete bridge br0, reporting an error if it does not exist:

    ovs-vsctl del-br br0

Delete bridge br0 if it exists:

    ovs-vsctl --if-exists del-br br0

Set the qos column of the Port record for eth0 to point to a new QoS record, which in turn points with its queue 0 to a new Queue record:

    ovs-vsctl -- set port eth0 qos=@newqos -- --id=@newqos create qos type=linux-htb other-config:max-rate=1000000 queues:0=@newqueue -- --id=@newqueue create queue other-config:min-rate=1000000 other-config:max-rate=1000000

CONFIGURATION COOKBOOK

  Port Configuration

Add an ``internal port'' vlan10 to bridge br0 as a VLAN access port for VLAN 10, and configure it with an IP address:

    ovs-vsctl add-port br0 vlan10 tag=10 -- set Interface vlan10 type=internal

    ip addr add 192.168.0.123/24 dev vlan10

Add a GRE tunnel port gre0 to remote IP address 1.2.3.4 to bridge br0:

    ovs-vsctl add-port br0 gre0 -- set Interface gre0 type=gre options:remote_ip=1.2.3.4

  Port Mirroring

Mirror all packets received or sent on eth0 or eth1 onto eth2, assuming that all of those ports exist on bridge br0 (as a side-effect this causes any packets received on eth2 to be ignored):

    ovs-vsctl -- set Bridge br0 mirrors=@m \

    -- --id=@eth0 get Port eth0 \

    -- --id=@eth1 get Port eth1 \

    -- --id=@eth2 get Port eth2 \

    -- --id=@m create Mirror name=mymirror select-dst-port=@eth0,@eth1 select-src-port=@eth0,@eth1 output-port=@eth2

Remove the mirror created above from br0, which also destroys the Mirror record (since it is now unreferenced):

    ovs-vsctl -- --id=@rec get Mirror mymirror \

    -- remove Bridge br0 mirrors @rec

The following simpler command also works:

    ovs-vsctl clear Bridge br0 mirrors

  Quality of Service (QoS)

Create a linux-htb QoS record that points to a few queues and use it on eth0 and eth1:

    ovs-vsctl -- set Port eth0 qos=@newqos \

    -- set Port eth1 qos=@newqos \

    -- --id=@newqos create QoS type=linux-htb other-config:max-rate=1000000000 queues=0=@q0,1=@q1 \

    -- --id=@q0 create Queue other-config:min-rate=100000000 other-config:max-rate=100000000 \

    -- --id=@q1 create Queue other-config:min-rate=500000000

Deconfigure the QoS record above from eth1 only:

    ovs-vsctl clear Port eth1 qos

To deconfigure the QoS record from both eth0 and eth1 and then delete the QoS record (which must be done explicitly because unreferenced QoS records are not automatically destroyed):

    ovs-vsctl -- destroy QoS eth0 -- clear Port eth0 qos -- clear Port eth1 qos

(This command will leave two unreferenced Queue records in the database. To delete them, use "ovs-vsctl list Queue" to find their UUIDs, then "ovs-vsctl destroy Queue uuid1 uuid2" to destroy each of them or use "ovs-vsctl -- --all destroy Queue" to delete all records.)

  Connectivity Monitoring

Monitor connectivity to a remote maintenance point on eth0.

    ovs-vsctl set Interface eth0 cfm_mpid=1

Deconfigure connectivity monitoring from above:

    ovs-vsctl clear Interface eth0 cfm_mpid

  NetFlow

Configure bridge br0 to send NetFlow records to UDP port 5566 on host 192.168.0.34, with an active timeout of 30 seconds:

    ovs-vsctl -- set Bridge br0 netflow=@nf \

    -- --id=@nf create NetFlow targets=\"192.168.0.34:5566\" active-timeout=30

Update the NetFlow configuration created by the previous command to instead use an active timeout of 60 seconds:

    ovs-vsctl set NetFlow br0 active_timeout=60

Deconfigure the NetFlow settings from br0, which also destroys the NetFlow record (since it is now unreferenced):

    ovs-vsctl clear Bridge br0 netflow

  sFlow

Configure bridge br0 to send sFlow records to a collector on 10.0.0.1 at port 6343, using eth1's IP address as the source, with specific sampling parameters:

    ovs-vsctl -- --id=@s create sFlow agent=eth1 target=\"10.0.0.1:6343\" header=128 sampling=64 polling=10 \

    -- set Bridge br0 sflow=@s

Deconfigure sFlow from br0, which also destroys the sFlow record (since it is now unreferenced):

    ovs-vsctl -- clear Bridge br0 sflow

  IPFIX

Configure bridge br0 to send one IPFIX flow record per packet sample to UDP port 4739 on host 192.168.0.34, with Observation Domain ID 123 and Observation Point ID 456, a flow cache active timeout of 1 minute (60 seconds), maximum flow cache size of 13 flows, and flows sampled on output port with tunnel info(sampling on input and output port is enabled by default if not disabled) :

    ovs-vsctl -- set Bridge br0 ipfix=@i \

    -- --id=@i create IPFIX targets=\"192.168.0.34:4739\" obs_domain_id=123 obs_point_id=456 cache_active_timeout=60 cache_max_flows=13 \

    other_config:enable-input-sampling=false other_config:enable-tunnel-sampling=true

Deconfigure the IPFIX settings from br0, which also destroys the IPFIX record (since it is now unreferenced):

    ovs-vsctl clear Bridge br0 ipfix

  802.1D Spanning Tree Protocol (STP)

Configure bridge br0 to participate in an 802.1D spanning tree:

    ovs-vsctl set Bridge br0 stp_enable=true

Set the bridge priority of br0 to 0x7800:

    ovs-vsctl set Bridge br0 other_config:stp-priority=0x7800

Set the path cost of port eth0 to 10:

    ovs-vsctl set Port eth0 other_config:stp-path-cost=10

Deconfigure STP from above:

    ovs-vsctl set Bridge br0 stp_enable=false

  Multicast Snooping

Configure bridge br0 to enable multicast snooping:

    ovs-vsctl set Bridge br0 mcast_snooping_enable=true

Set the multicast snooping aging time br0 to 300 seconds:

    ovs-vsctl set Bridge br0 other_config:mcast-snooping-aging-time=300

Set the multicast snooping table size br0 to 2048 entries:

    ovs-vsctl set Bridge br0 other_config:mcast-snooping-table-size=2048

Disable flooding of unregistered multicast packets to all ports. When set to true, the switch will send unregistered multicast packets only to ports connected to multicast routers. When it is set to false, the switch will send them to all ports. This command disables the flood of unregistered packets on bridge br0.

    ovs-vsctl set Bridge br0 other_config:mcast-snooping-disable-flood-unregistered=true

Enable flooding of multicast packets (except Reports) on a specific port.

    ovs-vsctl set Port eth1 other_config:mcast-snooping-flood=true

Enable flooding of Reports on a specific port.

    ovs-vsctl set Port eth1 other_config:mcast-snooping-flood-reports=true

Deconfigure multicasting snooping from above:

    ovs-vsctl set Bridge br0 mcast_snooping_enable=false

  802.1D-2004 Rapid Spanning Tree Protocol (RSTP)

Configure bridge br0 to participate in an 802.1D-2004 Rapid Spanning Tree:

    ovs-vsctl set Bridge br0 rstp_enable=true

Set the bridge address of br0 to 00:aa:aa:aa:aa:aa :

    ovs-vsctl set Bridge br0 other_config:rstp-address=00:aa:aa:aa:aa:aa

Set the bridge priority of br0 to 0x7000. The value must be specified in decimal notation and should be a multiple of 4096 (if not, it is rounded down to the nearest multiple of 4096). The default priority value is 0x800 (32768).

    ovs-vsctl set Bridge br0 other_config:rstp-priority=28672

Set the bridge ageing time of br0 to 1000 s. The ageing time value should be between 10 s and 1000000 s. The default value is 300 s.

    ovs-vsctl set Bridge br0 other_config:rstp-ageing-time=1000

Set the bridge force protocol version of br0 to 0. The force protocol version has two acceptable values: 0 (STP compatibility mode) and 2 (normal operation).

    ovs-vsctl set Bridge br0 other_config:rstp-force-protocol-version=0

Set the bridge max age of br0 to 10 s. The max age value should be between 6 s and 40 s. The default value is 20 s.

    ovs-vsctl set Bridge br0 other_config:rstp-max-age=10

Set the bridge forward delay of br0 to 15 s. This value should be between 4 s and 30 s. The default value is 15 s.

    ovs-vsctl set Bridge br0 other_config:rstp-forward-delay=15

Set the bridge transmit hold count of br0 to 7 s. This value should be between 1 s and 10 s. The default value is 6 s.

    ovs-vsctl set Bridge br0 other_config:rstp-transmit-hold-count=7

Enable RSTP on the Port eth0:

    ovs-vsctl set Port eth0 other_config:rstp-enable=true

Disable RSTP on the Port eth0:

    ovs-vsctl set Port eth0 other_config:rstp-enable=false

Set the priority of port eth0 to 32. The value must be specified in decimal notation and should be a multiple of 16 (if not, it is rounded down to the nearest multiple of 16). The default priority value is 0x80 (128).

    ovs-vsctl set Port eth0 other_config:rstp-port-priority=32

Set the port number of port eth0 to 3:

    ovs-vsctl set Port eth0 other_config:rstp-port-num=3

Set the path cost of port eth0 to 150:

    ovs-vsctl set Port eth0 other_config:rstp-path-cost=150

Set the admin edge value of port eth0:

    ovs-vsctl set Port eth0 other_config:rstp-port-admin-edge=true

Set the auto edge value of port eth0:

    ovs-vsctl set Port eth0 other_config:rstp-port-auto-edge=true

Set the admin point to point MAC value of port eth0. Acceptable values are 0 (not point-to-point), 1 (point-to-point, the default value) or 2 (automatic detection). The auto-detection mode is not currently implemented, and the value 2 has the same effect of 0 (not point-to-point).

    ovs-vsctl set Port eth0 other_config:rstp-admin-p2p-mac=1

Set the admin port state value of port eth0. true is the default value.

    ovs-vsctl set Port eth0 other_config:rstp-admin-port-state=false

Set the mcheck value of port eth0:

    ovs-vsctl set Port eth0 other_config:rstp-port-mcheck=true

Deconfigure RSTP from above:

    ovs-vsctl set Bridge br0 rstp_enable=false

  OpenFlow Version

Configure bridge br0 to support OpenFlow versions 1.0, 1.2, and 1.3:

    ovs-vsctl set bridge br0 protocols=OpenFlow10,OpenFlow12,OpenFlow13

  Flow Table Configuration
Make flow table 0 on bridge br0 refuse to accept more than 100 flows:

    ovs-vsctl -- --id=@ft create Flow_Table flow_limit=100 overflow_policy=refuse -- set Bridge br0 flow_tables=0=@ft

Make flow table 0 on bridge br0 evict flows, with fairness based on the matched ingress port, when there are more than 100:

    ovs-vsctl -- --id=@ft create Flow_Table flow_limit=100 overflow_policy=evict groups='"NXM_OF_IN_PORT[]"' -- set Bridge br0 flow_tables:0=@ft

EXIT STATUS

0   Successful program execution.

1   Usage, syntax, or configuration file error.

2   The bridge argument to br-exists specified the name of a bridge that does not exist.

SEE ALSO
ovsdb-server(1), ovs-vswitchd(8), ovs-vswitchd.conf.db(5).