.\" -*- nroff -*-
.so lib/ovs.tmac
.TH ovs\-vsctl 8 "@VERSION@" "Open vSwitch" "Open vSwitch Manual"
.\" This program's name:
.ds PN ovs\-vsctl
.
.SH NAME
ovs\-vsctl \- utility for querying and configuring \fBovs\-vswitchd\fR
.
.SH SYNOPSIS
\fBovs\-vsctl\fR [\fIoptions\fR] \fB\-\-\fR [\fIoptions\fR] \fIcommand
\fR[\fIargs\fR] [\fB\-\-\fR [\fIoptions\fR] \fIcommand \fR[\fIargs\fR]]...
.
.SH DESCRIPTION
The \fBovs\-vsctl\fR program configures \fBovs\-vswitchd\fR(8) by
providing a high\-level interface to its configuration database.
See \fBovs\-vswitchd.conf.db\fR(5) for comprehensive documentation of
the database schema.
.PP
\fBovs\-vsctl\fR connects to an \fBovsdb\-server\fR 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 \fBovs\-vswitchd\fR has finished
reconfiguring itself before it exits.  (If you use \fBovs\-vsctl\fR
when \fBovs\-vswitchd\fR is not running, use \fB\-\-no\-wait\fR.)
.PP
\fBovs\-vsctl\fR can perform any number of commands in a single run,
implemented as a single atomic transaction against the database.
.PP
The \fBovs\-vsctl\fR command line begins with global options (see
\fBOPTIONS\fR below for details).  The global options are followed by
one or more commands.  Each command should begin with \fB\-\-\fR by
itself as a command-line argument, to separate it from the following
commands.  (The \fB\-\-\fR 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 \fBEXAMPLES\fR below for syntax
examples.
.
.SS "Linux VLAN Bridging Compatibility"
The \fBovs\-vsctl\fR 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.
.PP
For compatibility with software designed for the Linux bridge,
\fBovs\-vsctl\fR 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 \fBadd\-br\fR command (see below) creates a ``fake
bridge'' within an Open vSwitch bridge to simulate this behavior.
When such a ``fake bridge'' is active, \fBovs\-vsctl\fR 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.)
.
.SH OPTIONS
.
The following options affect the behavior \fBovs\-vsctl\fR 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 \fB\-\-\fR.
.
.IP "\fB\-\-db=\fIserver\fR"
Sets \fIserver\fR as the database server that \fBovs\-vsctl\fR
contacts to query or modify configuration.  \fIserver\fR may be an
OVSDB active or passive connection method, as described in
\fBovsdb\fR(7).  The default is \fBunix:@RUNDIR@/db.sock\fR.
.IP "\fB\-\-no\-wait\fR"
Prevents \fBovs\-vsctl\fR from waiting for \fBovs\-vswitchd\fR to
reconfigure itself according to the modified database.  This
option should be used if \fBovs\-vswitchd\fR is not running;
otherwise, \fBovs\-vsctl\fR will not exit until \fBovs\-vswitchd\fR
starts.
.IP
This option has no effect if the commands specified do not change the
database.
.
.IP "\fB\-\-no\-syslog\fR"
By default, \fBovs\-vsctl\fR logs its arguments and the details of any
changes that it makes to the system log.  This option disables this
logging.
.IP
This option is equivalent to \fB\-\-verbose=vsctl:syslog:warn\fR.
.
.IP "\fB\-\-oneline\fR"
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 \fB\\n\fR, and any instances of \fB\\\fR 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
\fBlist\fR or \fBfind\fR commands; see \fBTable Formatting Options\fR
below.
.
.IP "\fB\-\-dry\-run\fR"
Prevents \fBovs\-vsctl\fR from actually modifying the database.
.
.IP "\fB\-t \fIsecs\fR"
.IQ "\fB\-\-timeout=\fIsecs\fR"
By default, or with a \fIsecs\fR of \fB0\fR, \fBovs\-vsctl\fR waits
forever for a response from the database.  This option limits runtime
to approximately \fIsecs\fR seconds.  If the timeout expires,
\fBovs\-vsctl\fR will exit with a \fBSIGALRM\fR signal.  (A timeout
would normally happen only if the database cannot be contacted, or if
the system is overloaded.)
.
.IP "\fB\-\-retry\fR"
Without this option, if \fBovs\-vsctl\fR connects outward to the
database server (the default) then \fBovs\-vsctl\fR will try to
connect once and exit with an error if the connection fails (which
usually means that \fBovsdb\-server\fR is not running).
.IP
With this option, or if \fB\-\-db\fR specifies that \fBovs\-vsctl\fR
should listen for an incoming connection from the database server,
then \fBovs\-vsctl\fR will wait for a connection to the database
forever.
.IP
Regardless of this setting, \fB\-\-timeout\fR always limits how long
\fBovs\-vsctl\fR will wait.
.
.SS "Table Formatting Options"
These options control the format of output from the \fBlist\fR and
\fBfind\fR commands.
.so lib/table.man
.
.SS "Public Key Infrastructure Options"
.so lib/ssl.man
.so lib/ssl-bootstrap.man
.so lib/ssl-peer-ca-cert.man
.so lib/vlog.man
.so lib/common.man
.
.SH COMMANDS
The commands implemented by \fBovs\-vsctl\fR are described in the
sections below.
.SS "Open vSwitch Commands"
These commands work with an Open vSwitch as a whole.
.
.IP "\fBinit\fR"
Initializes the Open vSwitch database, if it is empty.  If the
database has already been initialized, this command has no effect.
.IP
Any successful \fBovs\-vsctl\fR command automatically initializes the
Open vSwitch database if it is empty.  This command is provided to
initialize the database without executing any other command.
.
.IP "\fBshow\fR"
Prints a brief overview of the database contents.
.
.IP "\fBemer\-reset\fR"
Reset the configuration into a clean state.  It deconfigures OpenFlow
controllers, OVSDB servers, and SSL/TLS, and deletes port mirroring,
\fBfail_mode\fR, NetFlow, sFlow, and IPFIX configuration.  This
command also removes all \fBother\-config\fR keys from all database
records, except that \fBother\-config:hwaddr\fR is preserved if it is
present in a Bridge record.  Other networking configuration is left
as-is.
.
.SS "Bridge Commands"
These commands examine and manipulate Open vSwitch bridges.
.
.IP "[\fB\-\-may\-exist\fR] \fBadd\-br \fIbridge\fR"
Creates a new bridge named \fIbridge\fR.  Initially the bridge will
have no ports (other than \fIbridge\fR itself).
.IP
Without \fB\-\-may\-exist\fR, attempting to create a bridge that
exists is an error.  With \fB\-\-may\-exist\fR, this command does
nothing if \fIbridge\fR already exists as a real bridge.
.
.IP "[\fB\-\-may\-exist\fR] \fBadd\-br \fIbridge parent vlan\fR"
Creates a ``fake bridge'' named \fIbridge\fR within the existing Open
vSwitch bridge \fIparent\fR, which must already exist and must not
itself be a fake bridge.  The new fake bridge will be on 802.1Q VLAN
\fIvlan\fR, which must be an integer between 0 and 4095.  The parent
bridge must not already have a fake bridge for \fIvlan\fR.  Initially
\fIbridge\fR will have no ports (other than \fIbridge\fR itself).
.IP
Without \fB\-\-may\-exist\fR, attempting to create a bridge that
exists is an error.  With \fB\-\-may\-exist\fR, this command does
nothing if \fIbridge\fR already exists as a VLAN bridge under
\fIparent\fR for \fIvlan\fR.
.
.IP "[\fB\-\-if\-exists\fR] \fBdel\-br \fIbridge\fR"
Deletes \fIbridge\fR and all of its ports.  If \fIbridge\fR is a real
bridge, this command also deletes any fake bridges that were created
with \fIbridge\fR as parent, including all of their ports.
.IP
Without \fB\-\-if\-exists\fR, attempting to delete a bridge that does
not exist is an error.  With \fB\-\-if\-exists\fR, attempting to
delete a bridge that does not exist has no effect.
.
.IP "[\fB\-\-real\fR|\fB\-\-fake\fR] \fBlist\-br\fR"
Lists all existing real and fake bridges on standard output, one per
line.  With \fB\-\-real\fR or \fB\-\-fake\fR, only bridges of that type
are returned.
.
.IP "\fBbr\-exists \fIbridge\fR"
Tests whether \fIbridge\fR exists as a real or fake bridge.  If so,
\fBovs\-vsctl\fR exits successfully with exit code 0.  If not,
\fBovs\-vsctl\fR exits unsuccessfully with exit code 2.
.
.IP "\fBbr\-to\-vlan \fIbridge\fR"
If \fIbridge\fR is a fake bridge, prints the bridge's 802.1Q VLAN as a
decimal integer.  If \fIbridge\fR is a real bridge, prints 0.
.
.IP "\fBbr\-to\-parent \fIbridge\fR"
If \fIbridge\fR is a fake bridge, prints the name of its parent
bridge.  If \fIbridge\fR is a real bridge, print \fIbridge\fR.
.
.IP "\fBbr\-set\-external\-id \fIbridge key\fR [\fIvalue\fR]"
Sets or clears an ``external ID'' value on \fIbridge\fR.  These values
are intended to identify entities external to Open vSwitch with which
\fIbridge\fR is associated, e.g. the bridge's identifier in a
virtualization management platform.  The Open vSwitch database schema
specifies well-known \fIkey\fR values, but \fIkey\fR and \fIvalue\fR
are otherwise arbitrary strings.
.IP
If \fIvalue\fR is specified, then \fIkey\fR is set to \fIvalue\fR for
\fIbridge\fR, overwriting any previous value.  If \fIvalue\fR is
omitted, then \fIkey\fR is removed from \fIbridge\fR's set of external
IDs (if it was present).
.IP
For real bridges, the effect of this command is similar to that of a
\fBset\fR or \fBremove\fR command in the \fBexternal\-ids\fR column of
the \fBBridge\fR table.  For fake bridges, it actually modifies keys
with names prefixed by \fBfake\-bridge\-\fR in the \fBPort\fR table.
.
.IP "\fBbr\-get\-external\-id \fIbridge\fR [\fIkey\fR]"
Queries the external IDs on \fIbridge\fR.  If \fIkey\fR is specified,
the output is the value for that \fIkey\fR or the empty string if
\fIkey\fR is unset.  If \fIkey\fR is omitted, the output is
\fIkey\fB=\fIvalue\fR, one per line, for each key-value pair.
.IP
For real bridges, the effect of this command is similar to that of a
\fBget\fR command in the \fBexternal\-ids\fR column of the
\fBBridge\fR table.  For fake bridges, it queries keys with names
prefixed by \fBfake\-bridge\-\fR in the \fBPort\fR table.
.
.SS "Port Commands"
.
These commands examine and manipulate Open vSwitch ports.  These
commands treat a bonded port as a single entity.
.
.IP "\fBlist\-ports \fIbridge\fR"
Lists all of the ports within \fIbridge\fR on standard output, one per
line.  The local port \fIbridge\fR is not included in the list.
.
.IP "[\fB\-\-may\-exist\fR] \fBadd\-port \fIbridge port \fR[\fIcolumn\fR[\fB:\fIkey\fR]\fR=\fIvalue\fR]\&...\fR"
Creates on \fIbridge\fR a new port named \fIport\fR from the network
device of the same name.
.IP
Optional arguments set values of column in the Port record created by
the command.  For example, \fBtag=9\fR would make the port an access
port for VLAN 9.  The syntax is the same as that for the \fBset\fR
command (see \fBDatabase Commands\fR below).
.IP
Without \fB\-\-may\-exist\fR, attempting to create a port that exists
is an error.  With \fB\-\-may\-exist\fR, this command does nothing if
\fIport\fR already exists on \fIbridge\fR and is not a bonded port.
.
.IP "[\fB\-\-if\-exists\fR] \fBdel\-port \fR[\fIbridge\fR] \fIport\fR"
Deletes \fIport\fR.  If \fIbridge\fR is omitted, \fIport\fR is removed
from whatever bridge contains it; if \fIbridge\fR is specified, it
must be the real or fake bridge that contains \fIport\fR.
.IP
Without \fB\-\-if\-exists\fR, attempting to delete a port that does
not exist is an error.  With \fB\-\-if\-exists\fR, attempting to
delete a port that does not exist has no effect.
.
.IP "[\fB\-\-if\-exists\fR] \fB\-\-with\-iface del\-port \fR[\fIbridge\fR] \fIiface\fR"
Deletes the port named \fIiface\fR or that has an interface named
\fIiface\fR.  If \fIbridge\fR is omitted, the port is removed from
whatever bridge contains it; if \fIbridge\fR is specified, it must be
the real or fake bridge that contains the port.
.IP
Without \fB\-\-if\-exists\fR, attempting to delete the port for an
interface that does not exist is an error.  With \fB\-\-if\-exists\fR,
attempting to delete the port for an interface that does not exist has
no effect.
.
.IP "\fBport\-to\-br \fIport\fR"
Prints the name of the bridge that contains \fIport\fR on standard
output.
.
.SS "Bond Commands"
.
These commands work with ports that have more than one interface,
which Open vSwitch calls ``bonds.''
.
.IP "[\fB\-\-fake\-iface\fR] \fBadd\-bond \fIbridge port iface\fR\&... [\fIcolumn\fR[\fB:\fIkey\fR]\fR=\fIvalue\fR]\&...\fR"
Creates on \fIbridge\fR a new port named \fIport\fR that bonds
together the network devices given as each \fIiface\fR.  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'.
.IP
Optional arguments set values of column in the Port record created by
the command.  The syntax is the same as that for the \fBset\fR command
(see \fBDatabase Commands\fR below).
.IP
With \fB\-\-fake\-iface\fR, a fake interface with the name \fIport\fR is
created.  This should only be used for compatibility with legacy
software that requires it.
.IP
Without \fB\-\-may\-exist\fR, attempting to create a port that exists
is an error.  With \fB\-\-may\-exist\fR, this command does nothing if
\fIport\fR already exists on \fIbridge\fR and bonds together exactly
the specified interfaces.
.
.IP "[\fB\-\-may\-exist\fR] \fBadd\-bond\-iface \fIbond iface\fR"
Adds \fIiface\fR as a new bond interface to the existing port
\fIbond\fR.  If \fIbond\fR previously had only one port, this
transforms it into a bond.
.IP
Without \fB\-\-may\-exist\fR, attempting to add an \fIiface\fR that is
already part of \fIbond\fR is an error.  With \fB\-\-may\-exist\fR,
this command does nothing if \fIiface\fR is already part of
\fIbond\fR.  (It is still an error if \fIiface\fR is an interface of
some other port or bond.)
.
.IP "[\fB\-\-if\-exists\fR] \fBdel\-bond\-iface\fR [\fIbond\fR] \fIiface\fR"
Removes \fIiface\fR from its port.  If \fIbond\fR is omitted,
\fIiface\fR is removed from whatever port contains it; if \fIbond\fR
is specified, it must be the port that contains \fIbond\fR.
.IP
If removing \fIiface\fR 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 \fIiface\fR is the only interface in its
port.
.IP
Without \fB\-\-if\-exists\fR, attempting to delete an interface that
does not exist is an error.  With \fB\-\-if\-exists\fR, attempting to
delete an interface that does not exist has no effect.
.
.SS "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.
.
.IP "\fBlist\-ifaces \fIbridge\fR"
Lists all of the interfaces within \fIbridge\fR on standard output,
one per line.  The local port \fIbridge\fR is not included in the
list.
.
.IP "\fBiface\-to\-br \fIiface\fR"
Prints the name of the bridge that contains \fIiface\fR on standard
output.
.
.SS "Conntrack Zone Commands"
These commands query and modify datapath CT zones, Timeout Policies and Limits.
.
.IP "[\fB\-\-may\-exist\fR] \fBadd\-zone\-tp \fIdatapath \fBzone=\fIzone_id \fIpolicies\fR"
Creates a conntrack zone timeout policy with \fIzone_id\fR in
\fIdatapath\fR.  The \fIpolicies\fR consist of \fIkey\fB=\fIvalue\fR
pairs, separated by spaces.  For example, \fBicmp_first=30
icmp_reply=60\fR specifies a 30-second timeout policy for the first ICMP
packet and a 60-second policy for ICMP reply packets.  See the
\fBCT_Timeout_Policy\fR table in \fBovs-vswitchd.conf.db\fR(5) for the
supported keys.
.IP
Without \fB\-\-may\-exist\fR, attempting to add a \fIpolicy\fR for
\fIzone_id\fR that already has a policy is an error.
 With \fB\-\-may\-exist\fR, this command does nothing if policy for
 \fIzone_id\fR already exists.
.
.IP "[\fB\-\-if\-exists\fR] \fBdel\-zone\-tp \fIdatapath \fBzone=\fIzone_id\fR"
Delete the timeout policy associated with \fIzone_id\fR from \fIdatapath\fR.
.IP
Without \fB\-\-if\-exists\fR, attempting to delete a policy for zone that
does not exist or doesn't have a policy is an error.  With
\fB\-\-if\-exists\fR, attempting to delete a a policy that does not
exist has no effect.
.
.IP "\fBlist\-zone\-tp \fIdatapath\fR"
Prints the timeout policies of all zones in \fIdatapath\fR.
.
.IP "\fBset\-zone\-limit \fIdatapath \fIzone_id\fR|\fBdefault \fIzone_limit\fR"
Sets a conntrack zone limit with \fIzone_id\fR|\fIdefault\fR in
\fIdatapath\fR.  The \fIlimit\fR with value \fB0\fR means unlimited.
.IP
.
.IP "[\fB\-\-if\-exists\fR] \fBdel\-zone\-limit \fIdatapath \fIzone_id\fR|\fBdefault\fR"
Delete the limit associated with \fIzone_id\fR from \fIdatapath\fR.
.IP
Without \fB\-\-if\-exists\fR, attempting to delete a limit for zone that
does not exist or doesn't have a limit is an error.  With \fB\-\-if\-exists\fR,
attempting to delete a limit that does not exist has no effect.
.
.IP "\fBlist\-zone\-limits \fIdatapath\fR"
Prints the limits of all zones in \fIdatapath\fR.
.
.SS "Datapath Capabilities Command"
The command query datapath capabilities.
.
.IP "\fBlist\-dp\-cap \fIdatapath\fR"
Prints the datapath's capabilities.
.
.SS "OpenFlow Controller Connectivity"
.
\fBovs\-vswitchd\fR 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 \fBovs\-ofctl\fR.
.
.IP "\fBget\-controller\fR \fIbridge\fR"
Prints the configured controller target.
.
.IP "\fBdel\-controller\fR \fIbridge\fR"
Deletes the configured controller target.
.
.IP "\fBset\-controller\fR \fIbridge\fR \fItarget\fR\&..."
Sets the configured controller target or targets.  Each \fItarget\fR may
use any of the following forms:
.
.RS
.so lib/vconn-active.man
.so lib/vconn-passive.man
.RE
.
.ST "Controller Failure Settings"
.PP
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.
.PP
If the value is \fBstandalone\fR, or if neither of these settings
is set, \fBovs\-vswitchd\fR 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,
\fBovs\-vswitchd\fR causes the datapath to act like an ordinary
MAC-learning switch.  \fBovs\-vswitchd\fR will continue to retry connecting
to the controller in the background and, when the connection succeeds,
it discontinues its standalone behavior.
.PP
If this option is set to \fBsecure\fR, \fBovs\-vswitchd\fR will not
set up flows on its own when the controller connection fails.
.
.IP "\fBget\-fail\-mode\fR \fIbridge\fR"
Prints the configured failure mode.
.
.IP "\fBdel\-fail\-mode\fR \fIbridge\fR"
Deletes the configured failure mode.
.
.IP "\fBset\-fail\-mode\fR \fIbridge\fR \fBstandalone\fR|\fBsecure\fR"
Sets the configured failure mode.
.
.SS "Manager Connectivity"
.
These commands manipulate the \fBmanager_options\fR column in the
\fBOpen_vSwitch\fR table and rows in the \fBManagers\fR table.  When
\fBovsdb\-server\fR is configured to use the \fBmanager_options\fR column for
OVSDB connections (as described in the startup scripts provided with
Open vSwitch; the corresponding \fBovsdb\-server\fR command option is
\fB--remote=db:Open_vSwitch,Open_vSwitch,manager_options\fR), this allows the
administrator to use \fBovs\-vsctl\fR to configure database connections.
.
.IP "\fBget\-manager\fR"
Prints the configured manager(s).
.
.IP "\fBdel\-manager\fR"
Deletes the configured manager(s).
.
.IP "\fBset\-manager\fR \fItarget\fR\&..."
Sets the configured manager target or targets.
Each \fItarget\fR may be an OVSDB active or passive connection method,
e.g. \fBpssl:6640\fR, as described in \fBovsdb\fR(7).
.
.SS "SSL/TLS Configuration"
When \fBovs\-vswitchd\fR is configured to connect over SSL/TLS for management
or controller connectivity, the following parameters are required:
.TP
\fIprivate-key\fR
Specifies a PEM file containing the private key used as the virtual
switch's identity for SSL/TLS connections to the controller.
.TP
\fIcertificate\fR
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.
.TP
\fIca-cert\fR
Specifies a PEM file containing the CA certificate used to verify that
the virtual switch is connected to a trustworthy controller.
.PP
These files are read only once, at \fBovs\-vswitchd\fR startup time.  If
their contents change, \fBovs\-vswitchd\fR must be killed and restarted.
.PP
These SSL/TLS settings apply to all SSL/TLS connections made by the virtual
switch.
.
.IP "\fBget\-ssl\fR"
Prints the SSL/TLS configuration.
.
.IP "\fBdel\-ssl\fR"
Deletes the current SSL/TLS configuration.
.
.IP "[\fB\-\-bootstrap\fR] \fBset\-ssl\fR \fIprivate-key\fR \fIcertificate\fR \fIca-cert\fR"
Sets the SSL/TLS configuration.  The \fB\-\-bootstrap\fR option is described
below.
.
.ST "CA Certificate Bootstrap"
.PP
Ordinarily, all of the files named in the SSL/TLS configuration must exist
when \fBovs\-vswitchd\fR starts.  However, if the \fIca-cert\fR file
does not exist and the \fB\-\-bootstrap\fR
option is given, then \fBovs\-vswitchd\fR will attempt to obtain the
CA certificate from the controller on its first SSL/TLS 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/TLS connections must be authenticated by a certificate signed by the
CA certificate thus obtained.
.PP
\fBThis option exposes the SSL/TLS connection to a man-in-the-middle
attack obtaining the initial CA certificate\fR, but it may be useful
for bootstrapping.
.PP
This option is only useful if the controller sends its CA certificate
as part of the SSL/TLS certificate chain.  SSL/TLS protocols do not
require the controller to send the CA certificate.
.
.SS "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.
.
.IP "\fBadd\-aa\-mapping \fIbridge i-sid vlan\fR"
Creates a new Auto-Attach mapping on \fIbridge\fR for \fIi-sid\fR
and \fIvlan\fR.
.
.IP "\fBdel\-aa\-mapping \fIbridge i-sid vlan\fR"
Deletes an Auto-Attach mapping on \fIbridge\fR for \fIi-sid\fR
and \fIvlan\fR.
.IP "\fBget\-aa\-mapping \fIbridge\fR"
Lists all of the Auto-Attach mappings within \fIbridge\fR on standard output.
.
.SS "Database Commands"
.
These commands query and modify the contents of \fBovsdb\fR tables.
They are a slight abstraction of the \fBovsdb\fR interface and as such
they operate at a lower level than other \fBovs\-vsctl\fR commands.
.PP
.ST "Identifying Tables, Records, and Columns"
.PP
Each of these commands has a \fItable\fR parameter to identify a table
within the database.  Many of them also take a \fIrecord\fR parameter
that identifies a particular record within a table.  The \fIrecord\fR
parameter may be the UUID for a record, and many tables offer
additional ways to identify records.  Some commands also take
\fIcolumn\fR parameters that identify a particular field within the
records in a table.
.PP
For a list of tables and their columns, see \fBovs-vswitchd.conf.db\fR(5) or
see the table listing from the \fB--help\fR option.
.PP
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 \fB\-\fR and
\fB_\fR are treated interchangeably.  Unique abbreviations of table
and column names are acceptable, e.g. \fBnet\fR or \fBn\fR is
sufficient to identify the \fBNetFlow\fR table.
.
.so lib/db-ctl-base.man
.SH "EXAMPLES"
Create a new bridge named br0 and add port eth0 to it:
.IP
.B "ovs\-vsctl add\-br br0"
.br
.B "ovs\-vsctl add\-port br0 eth0"
.PP
Alternatively, perform both operations in a single atomic transaction:
.IP
.B "ovs\-vsctl add\-br br0 \-\- add\-port br0 eth0"
.PP
Delete bridge \fBbr0\fR, reporting an error if it does not exist:
.IP
.B "ovs\-vsctl del\-br br0"
.PP
Delete bridge \fBbr0\fR if it exists:
.IP
.B "ovs\-vsctl \-\-if\-exists del\-br br0"
.PP
Set the \fBqos\fR column of the \fBPort\fR record for \fBeth0\fR to
point to a new \fBQoS\fR record, which in turn points with its queue 0
to a new \fBQueue\fR record:
.IP
.B "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"
.SH "CONFIGURATION COOKBOOK"
.SS "Port Configuration"
.PP
Add an ``internal port'' \fBvlan10\fR to bridge \fBbr0\fR as a VLAN
access port for VLAN 10, and configure it with an IP address:
.IP
.B "ovs\-vsctl add\-port br0 vlan10 tag=10 \-\- set Interface vlan10 type=internal"
.IP
.B "ip addr add 192.168.0.123/24 dev vlan10"
.
.PP
Add a GRE tunnel port \fBgre0\fR to remote IP address 1.2.3.4 to
bridge \fBbr0\fR:
.IP
.B "ovs\-vsctl add\-port br0 gre0 \-\- set Interface gre0 type=gre options:remote_ip=1.2.3.4"
.
.SS "Port Mirroring"
.PP
Mirror all packets received or sent on \fBeth0\fR or \fBeth1\fR onto
\fBeth2\fR, assuming that all of those ports exist on bridge \fBbr0\fR
(as a side-effect this causes any packets received on \fBeth2\fR to be
ignored):
.IP
.B "ovs\-vsctl \-\- set Bridge br0 mirrors=@m \(rs"
.IP
.B "\-\- \-\-id=@eth0 get Port eth0 \(rs"
.IP
.B "\-\- \-\-id=@eth1 get Port eth1 \(rs"
.IP
.B "\-\- \-\-id=@eth2 get Port eth2 \(rs"
.IP
.B "\-\- \-\-id=@m create Mirror name=mymirror select-dst-port=@eth0,@eth1 select-src-port=@eth0,@eth1 output-port=@eth2"
.PP
Remove the mirror created above from \fBbr0\fR, which also destroys
the Mirror record (since it is now unreferenced):
.IP
.B "ovs\-vsctl \-\- \-\-id=@rec get Mirror mymirror \(rs"
.IP
.B "\-\- remove Bridge br0 mirrors @rec"
.PP
The following simpler command also works:
.IP
.B "ovs\-vsctl clear Bridge br0 mirrors"
.SS "Quality of Service (QoS)"
.PP
Create a \fBlinux\-htb\fR QoS record that points to a few queues and
use it on \fBeth0\fR and \fBeth1\fR:
.IP
.B "ovs\-vsctl \-\- set Port eth0 qos=@newqos \(rs"
.IP
.B "\-\- set Port eth1 qos=@newqos \(rs"
.IP
.B "\-\- \-\-id=@newqos create QoS type=linux\-htb other\-config:max\-rate=1000000000 queues=0=@q0,1=@q1 \(rs"
.IP
.B "\-\- \-\-id=@q0 create Queue other\-config:min\-rate=100000000 other\-config:max\-rate=100000000 \(rs"
.IP
.B "\-\- \-\-id=@q1 create Queue other\-config:min\-rate=500000000"
.PP
Deconfigure the QoS record above from \fBeth1\fR only:
.IP
.B "ovs\-vsctl clear Port eth1 qos"
.PP
To deconfigure the QoS record from both \fBeth0\fR and \fBeth1\fR and
then delete the QoS record (which must be done explicitly because
unreferenced QoS records are not automatically destroyed):
.IP
.B "ovs\-vsctl \-\- destroy QoS eth0 \-\- clear Port eth0 qos \-\- clear Port eth1 qos"
.PP
(This command will leave two unreferenced Queue records in the
database.  To delete them, use "\fBovs\-vsctl list Queue\fR" to find
their UUIDs, then "\fBovs\-vsctl destroy Queue \fIuuid1\fR
\fIuuid2\fR" to destroy each of them or use
"\fBovs\-vsctl -- --all destroy Queue\fR" to delete all records.)
.SS "Connectivity Monitoring"
.PP
Monitor connectivity to a remote maintenance point on eth0.
.IP
.B "ovs\-vsctl set Interface eth0 cfm_mpid=1"
.PP
Deconfigure connectivity monitoring from above:
.IP
.B "ovs\-vsctl clear Interface eth0 cfm_mpid"
.SS "NetFlow"
.PP
Configure bridge \fBbr0\fR to send NetFlow records to UDP port 5566 on
host 192.168.0.34, with an active timeout of 30 seconds:
.IP
.B "ovs\-vsctl \-\- set Bridge br0 netflow=@nf \(rs"
.IP
.B "\-\- \-\-id=@nf create NetFlow targets=\(rs\(dq192.168.0.34:5566\(rs\(dq active\-timeout=30"
.PP
Update the NetFlow configuration created by the previous command to
instead use an active timeout of 60 seconds:
.IP
.B "ovs\-vsctl set NetFlow br0 active_timeout=60"
.PP
Deconfigure the NetFlow settings from \fBbr0\fR, which also destroys
the NetFlow record (since it is now unreferenced):
.IP
.B "ovs\-vsctl clear Bridge br0 netflow"
.SS "sFlow"
.PP
Configure bridge \fBbr0\fR to send sFlow records to a collector on
10.0.0.1 at port 6343, using \fBeth1\fR's IP address as the source,
with specific sampling parameters:
.IP
.B "ovs\-vsctl \-\- \-\-id=@s create sFlow agent=eth1 target=\(rs\(dq10.0.0.1:6343\(rs\(dq header=128 sampling=64 polling=10 \(rs"
.IP
.B "\-\- set Bridge br0 sflow=@s"
.PP
Deconfigure sFlow from \fBbr0\fR, which also destroys the sFlow record
(since it is now unreferenced):
.IP
.B "ovs\-vsctl \-\- clear Bridge br0 sflow"
.SS "IPFIX"
.PP
Configure bridge \fBbr0\fR 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) :
.IP
.B "ovs\-vsctl \-\- set Bridge br0 ipfix=@i \(rs"
.IP
.B "\-\- \-\-id=@i create IPFIX targets=\(rs\(dq192.168.0.34:4739\(rs\(dq obs_domain_id=123 obs_point_id=456 cache_active_timeout=60 cache_max_flows=13 \(rs"
.IP
.B "other_config:enable-input-sampling=false other_config:enable-tunnel-sampling=true"
.PP
Deconfigure the IPFIX settings from \fBbr0\fR, which also destroys the
IPFIX record (since it is now unreferenced):
.IP
.B "ovs\-vsctl clear Bridge br0 ipfix"
.SS "802.1D Spanning Tree Protocol (STP)"
.PP
Configure bridge \fBbr0\fR to participate in an 802.1D spanning tree:
.IP
.B "ovs\-vsctl set Bridge br0 stp_enable=true"
.PP
Set the bridge priority of \fBbr0\fR to 0x7800:
.IP
.B "ovs\-vsctl set Bridge br0 other_config:stp-priority=0x7800"
.PP
Set the path cost of port \fBeth0\fR to 10:
.IP
.B "ovs\-vsctl set Port eth0 other_config:stp-path-cost=10"
.PP
Deconfigure STP from above:
.IP
.B "ovs\-vsctl set Bridge br0 stp_enable=false"
.PP
.SS "Multicast Snooping"
.PP
Configure bridge \fBbr0\fR to enable multicast snooping:
.IP
.B "ovs\-vsctl set Bridge br0 mcast_snooping_enable=true"
.PP
Set the multicast snooping aging time \fBbr0\fR to 300 seconds:
.IP
.B "ovs\-vsctl set Bridge br0 other_config:mcast-snooping-aging-time=300"
.PP
Set the multicast snooping table size \fBbr0\fR to 2048 entries:
.IP
.B "ovs\-vsctl set Bridge br0 other_config:mcast-snooping-table-size=2048"
.PP
Disable flooding of unregistered multicast packets to all ports. When
set to \fBtrue\fR, the switch will send unregistered multicast packets only
to ports connected to multicast routers. When it is set to \fBfalse\fR, the
switch will send them to all ports. This command disables the flood of
unregistered packets on bridge \fBbr0\fR.
.IP
.B "ovs\-vsctl set Bridge br0 other_config:mcast-snooping-disable-flood-unregistered=true"
.PP
Enable flooding of multicast packets (except Reports) on a specific port.
.IP
.B "ovs\-vsctl set Port eth1 other_config:mcast-snooping-flood=true"
.PP
Enable flooding of Reports on a specific port.
.IP
.B "ovs\-vsctl set Port eth1 other_config:mcast-snooping-flood-reports=true"
.PP
Deconfigure multicasting snooping from above:
.IP
.B "ovs\-vsctl set Bridge br0 mcast_snooping_enable=false"
.PP
.SS "802.1D-2004 Rapid Spanning Tree Protocol (RSTP)"
.PP
Configure bridge \fBbr0\fR to participate in an 802.1D-2004 Rapid Spanning Tree:
.IP
.B "ovs\-vsctl set Bridge br0 rstp_enable=true"
.PP
Set the bridge address of \fBbr0\fR to 00:aa:aa:aa:aa:aa :
.IP
.B "ovs\-vsctl set Bridge br0 other_config:rstp-address=00:aa:aa:aa:aa:aa"
.PP
Set the bridge priority of \fBbr0\fR 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).
.IP
.B "ovs\-vsctl set Bridge br0 other_config:rstp-priority=28672"
.PP
Set the bridge ageing time of \fBbr0\fR to 1000 s. The ageing time value should be
between 10 s and 1000000 s. The default value is 300 s.
.IP
.B "ovs\-vsctl set Bridge br0 other_config:rstp-ageing-time=1000"
.PP
Set the bridge force protocol version of \fBbr0\fR to 0. The force protocol version
has two acceptable values: 0 (STP compatibility mode) and 2 (normal operation).
.IP
.B "ovs\-vsctl set Bridge br0 other_config:rstp-force-protocol-version=0"
.PP
Set the bridge max age of \fBbr0\fR to 10 s. The max age value should be between 6 s
and 40 s. The default value is 20 s.
.IP
.B "ovs\-vsctl set Bridge br0 other_config:rstp-max-age=10"
.PP
Set the bridge forward delay of \fBbr0\fR to 15 s.
This value should be between 4 s and 30 s. The default value is 15 s.
.IP
.B "ovs\-vsctl set Bridge br0 other_config:rstp-forward-delay=15"
.PP
Set the bridge transmit hold count of \fBbr0\fR to 7 s. This value should be between
1 s and 10 s. The default value is 6 s.
.IP
.B "ovs\-vsctl set Bridge br0 other_config:rstp-transmit-hold-count=7"
.PP
Enable RSTP on the Port \fBeth0\fR:
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-enable=true"
.PP
Disable RSTP on the Port \fBeth0\fR:
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-enable=false"
.PP
Set the priority of port \fBeth0\fR 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).
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-port-priority=32"
.PP
Set the port number of port \fBeth0\fR to 3:
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-port-num=3"
.PP
Set the path cost of port \fBeth0\fR to 150:
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-path-cost=150"
.PP
Set the admin edge value of port \fBeth0\fR:
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-port-admin-edge=true"
.PP
Set the auto edge value of port \fBeth0\fR:
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-port-auto-edge=true"
.PP
Set the admin point to point MAC value of port \fBeth0\fR.  Acceptable
values are \fB0\fR (not point-to-point), \fB1\fR (point-to-point, the
default value) or \fB2\fR (automatic detection).  The auto-detection
mode is not currently implemented, and the value \fB2\fR has the same
effect of \fB0\fR (not point-to-point).
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-admin-p2p-mac=1"
.PP
Set the admin port state value of port \fBeth0\fR.  \fBtrue\fR is the
default value.
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-admin-port-state=false"
.PP
Set the mcheck value of port \fBeth0\fR:
.IP
.B "ovs\-vsctl set Port eth0 other_config:rstp-port-mcheck=true"
.PP
Deconfigure RSTP from above:
.IP
.B "ovs\-vsctl set Bridge br0 rstp_enable=false"
.PP
.SS "OpenFlow Version"
.PP
Configure bridge \fBbr0\fR to support OpenFlow versions 1.0, 1.2, and
1.3:
.IP
.B "ovs\-vsctl set bridge br0 protocols=OpenFlow10,OpenFlow12,OpenFlow13"
.
.SS "Flow Table Configuration"
Make flow table 0 on bridge br0 refuse to accept more than 100 flows:
.IP
.B "ovs\-vsctl \-\- \-\-id=@ft create Flow_Table flow_limit=100 overflow_policy=refuse \-\- set Bridge br0 flow_tables=0=@ft"
.
.PP
Make flow table 0 on bridge br0 evict flows, with fairness based on
the matched ingress port, when there are more than 100:
.
.IP
.B "ovs\-vsctl \-\- \-\-id=@ft create Flow_Table flow_limit=100 overflow_policy=evict groups='\(dqNXM_OF_IN_PORT[]\(dq' \-\- set Bridge br0 flow_tables:0=@ft"
.SH "EXIT STATUS"
.IP "0"
Successful program execution.
.IP "1"
Usage, syntax, or configuration file error.
.IP "2"
The \fIbridge\fR argument to \fBbr\-exists\fR specified the name of a
bridge that does not exist.
.SH "SEE ALSO"
.
.BR ovsdb\-server (1),
.BR ovs\-vswitchd (8),
.BR ovs\-vswitchd.conf.db (5).