Command Line Interface

4-284

4

Multicast VLAN Registration Commands

This section describes commands used to configure Multicast VLAN Registration
(MVR). A single network-wide VLAN can be used to transmit multicast traffic (such
as television channels) across a service provider’s network. Any multicast traffic
entering an MVR VLAN is sent to all subscribers. This can significantly reduce to
processing overhead required to dynamically monitor and establish the distribution
tree for a normal multicast VLAN. Also note that MVR maintains the user isolation
and data security provided by VLAN segregation by passing only multicast traffic
into other VLANs to which the subscribers belong.

mvr (Global Configuration)

This command enables Multicast VLAN Registration (MVR) globally on the switch,
statically configures MVR multicast group IP address(es) using the group keyword,
or specifies the MVR VLAN identifier using the vlan keyword. Use the no form of
this command without any keywords to globally disable MVR. Use the no form with
the group keyword to remove a specific address or range of addresses. Or use the
no form with the vlan keyword restore the default MVR VLAN.
Syntax
[no] mvr [group ip-address [count] | vlan vlan-id]
group - Defines a multicast service sent to all attached subscribers.
ip-address - IP address for an MVR multicast group.
(Range: 224.0.1.0 - 239.255.255.255)
count - The number of contiguous MVR group addresses. (Range: 1-255)
vlan - Specifies the VLAN through which MVR multicast data is received.
This is also the VLAN to which all source ports must be assigned.
vlan-id - MVR VLAN ID (Range: 1-4094)
Default Setting
MVR is disabled.
No MVR group address is defined.
The default number of contiguous addresses is 0.
MVR VLAN ID is 1.
Table 4-88 Multicast VLAN Registration Commands
Command Function Mode Page
mvr Globally enables MVR, statically configures MVR group address(es), or
specifies the MVR VLAN identifier
GC 4-284
mvr Configures an interface as an MVR receiver or source port, enables
immediate leave capability, or configures an interface as a static
member of the MVR VLAN
IC 4-286
show mvr Shows information about the global MVR configuration settings,
interfaces attached to the MVR VLAN, or multicast groups assigned to
the MVR VLAN
PE 4-287