CLI Reference Guide-R07

Chapter 23 | Multicast Filtering Commands
MLD Snooping
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Command Usage
The router port expire time is the time the switch waits after the previous querier
stops before it considers the router port (i.e., the interface that had been receiving
query packets) to have expired.
Example
Console(config)#ipv6 mld snooping router-port-expire-time 300
Console(config)#
ipv6 mld snooping
unknown-multicast
mode
This command sets the action for dealing with unknown multicast packets. Use the
no form to restore the default.
Syntax
ipv6 mld snooping unknown-multicast mode {flood | to-router-port}
no ipv6 mld snooping unknown-multicast mode
flood - Floods the unknown multicast data packets to all ports.
to-router-port - Forwards the unknown multicast data packets to router
ports.
Default Setting
to-router-port
Command Mode
Global Configuration
Command Usage
◆ When set to “flood,” any received IPv6 multicast packets that have not been
requested by a host are flooded to all ports in the VLAN.
◆ When set to “router-port,” any received IPv6 multicast packets that have not
been requested by a host are forwarded to ports that are connected to a
detected multicast router.
Example
Console(config)#ipv6 mld snooping unknown-multicast mode flood
Console(config)#