Chapter 24
| Multicast Filtering Commands
MVR for IPv4
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would without this option having been used). Instead of immediately deleting
that group, it will look up the record, and only delete the group if there are no
other subscribers for it on the member port. Only when all hosts on that port
leave the group will the member port be deleted.
â—† Using immediate leave can speed up leave latency, but should only be enabled
on a port attached to only one multicast subscriber to avoid disrupting services
to other group members attached to the same interface.
â—† Immediate leave does not apply to multicast groups which have been statically
assigned to a port with the mvr vlan group command.
Example
The following enables immediate leave on a receiver port.
Console(config)#interface ethernet 1/5
Console(config-if)#mvr domain 1 immediate-leave
Console(config-if)#
mvr type This command configures an interface as an MVR receiver or source port. Use the
no form to restore the default settings.
Syntax
[no] mvr [domain domain-id] type {receiver | source}
domain-id - An independent multicast domain. (Range: 1-5)
receiver - Configures the interface as a subscriber port that can receive
multicast data.
source - Configures the interface as an uplink port that can send and
receive multicast data for the configured multicast groups.
Default Setting
The port type is not defined.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
â—† A port which is not configured as an MVR receiver or source port can use IGMP
snooping to join or leave multicast groups using the standard rules for
multicast filtering.
â—† Receiver ports can belong to different VLANs, but should not normally be
configured as a member of the MVR VLAN. IGMP snooping can also be used to
allow a receiver port to dynamically join or leave multicast groups not sourced
through the MVR VLAN. Also, note that VLAN membership for MVR receiver
ports cannot be set to access mode (see the switchport mode command).
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