Configuring Layer 2 Multicast
IGMP Snooping Configurations
Configuration Guide
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For switches that support MLD Snooping, IGMP Snooping and MLD Snooping share the
setting of Unknown Multicast, so you have to enable MLD Snooping globally at the same
time.
The following example shows how to configure the switch to discard unknown multicast
data:
Switch#configure
Switch(config)#ip igmp snooping
Switch(config)#ipv6 mld snooping
Switch(config)#ip igmp snooping drop-unknown
Switch(config)#show ip igmp snooping
IGMP Snooping :Enable
Unknown Multicast :Discard
Last Query Times :2
Last Query Interval :1
Global Member Age Time :260
Global Router Age Time :300
Global Report Suppression :Disable
Global Authentication Accounting:Disable
Enable Port:
Enable VLAN:
Switch(config-if)#end
Switch#copy running-config startup-config
2.2.4 Configuring IGMP Snooping Parameters on the Port
Configuring Router Port Time and Member Port Time
Step 1
configure
Enter global configuration mode.
Step 2
ip igmp snooping rtime
rtime
ip igmp snooping mtime
mtime
rtime
is the aging time of router ports, ranging from 60 to 600 seconds.
mtime
is the aging time of member ports, ranging from 60 to 600 seconds.