Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 1137)

Brocade 6910 Ethernet Access Switch Configuration Guide 1087
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Multicast VLAN Registration for IPv4
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Configuring MVR Interface Status
Use the Multicast > MVR (Configure Interface) page to configure each interface that participates in
the MVR protocol as a source port or receiver port. If you are sure that only one subscriber attached
to an interface is receiving multicast services, you can enable the immediate leave function.
CLI References
• “MVR for IPv4” on page 475
Command Usage
• A port configured as an MVR receiver or source port can join or leave multicast groups
configured under MVR. However, note that these ports can also use IGMP snooping to join or
leave any other multicast groups using the standard rules for multicast filtering.
• Receiver ports can belong to different VLANs, but should not be configured as a member of the
MVR VLAN. MVR allows a receiver port to dynamically join or leave multicast groups within an
MVR VLAN. Multicast groups can also be statically assigned to a receiver port (see
“Assigning
Static MVR Multicast Groups to Interfaces” on page 1089).
Receiver ports should not be statically configured as a member of the MVR VLAN. If so
configured, its MVR status will be inactive. Also, note that VLAN membership for MVR receiver
ports cannot be set to access mode (see
“Adding Static Members to VLANs” on page 724).
• One or more interfaces may be configured as MVR source ports. A source port is able to both
receive and send data for configured MVR groups or for groups which have been statically
assigned (see
“Assigning Static MVR Multicast Groups to Interfaces” on page 1089).
All source ports must belong to the MVR VLAN.
Subscribers should not be directly connected to source ports.
• Immediate leave applies only to receiver ports. When enabled, the receiver port is immediately
removed from the multicast group identified in the leave message. When immediate leave is
disabled, the switch follows the standard rules by sending a query message to the receiver port
and waiting for a response to determine if there are any remaining subscribers for that
multicast group before removing the port from the group list.
• Using immediate leave can speed up leave latency, but should only be enabled on a port
attached to one multicast subscriber to avoid disrupting services to other group members
attached to the same interface.
• Immediate leave does not apply to multicast groups which have been statically assigned to
a port.
Parameters
These parameters are displayed:
• Domain ID – An independent multicast domain. (Range: 1-5)
• Port/Trunk – Interface identifier.
• Type – The following interface types are supported:
• Source – An uplink port that can send and receive multicast data for the groups assigned
to the MVR VLAN. Note that the source port must be manually configured as a member of
the MVR VLAN (see
“Adding Static Members to VLANs” on page 724).