Configuring Layer 2 Multicast
IGMP Snooping Configurations
Configuration Guide
289
Step 3
ip igmp snooping immediate-leave
Enable Fast Leave on the specified port. With Fast Leave enabled on a port, the switch will
delete the port-multicast group entry from the multicast forwarding table once the port
receives a leave message. You should only use this function when there is a single receiver
present on the port.
Step 4
show ip igmp snooping interface [fastEthernet
[
port
|
port-list
] |
gigabitEthernet
[
port
|
port-
list
]]
basic-config
Show the basic IGMP snooping configuration on the specified port(s) or of all the ports.
Step 5
end
Return to privileged EXEC mode.
Step 6
copy running-config startup-config
Save the settings in the configuration file.
The following example shows how to enable Fast Leave on port 1/0/3:
Switch#configure
Switch(config)#ip igmp snooping
Switch(config)#interface gigabitEternet
1/0/3
Switch(config-if)#ip igmp snooping
Switch(config-if)#ip igmp snooping immediate-leave
Switch(config-if)#show ip igmp snooping interface gigabitEthernet
1/0/3
basic-config
Port IGMP-Snooping
Fast-Leave
---- ------------- ----------
Gi1/0/3
enable
enable
Switch(config-if)#end
Switch#copy running-config startup-config
Configuring Max Group and Overflow Action on the Port
Step 1
configure
Enter global configuration mode.
Step 2
interface {fastEthernet
port
| range fastEthernet
port-list
| gigabitEthernet
port
| range
gigabitEthernet
port-list
| port-channel
port-channel-id
| range port-channe
port-channel-list
}
Enter interface configuration mode
Step 3
ip igmp snooping max-groups
maxgroup
Enter the number of multicast groups the port can join. The range is 0 to 1000.
