You can set the maximum number of IGMP groups that a Layer 2 interface can join by using the ip igmp max-groups interface configuration command.
Use the no form of this command to set the maximum back to the default, which 208.
This restriction can be applied to Layer 2 ports only; you cannot set a maximum number of IGMP groups on routed ports or SVIs. You also can use this command on a logical EtherChannel interface but cannot use it on ports that belong to an EtherChannel port group.
SUMMARY STEPS
1. configure terminal
2. interface interface-id
3. ip igmp max-groups number
4. end
5. show running-config interface interface-id
6. copy running-config startup-config
DETAILED STEPS
Command or Action Purpose
Step 1 configure terminal
Example:
switch# configure terminal
Enters the global configuration mode.
Step 2 interface interface-id
Example:
Switch(config)# interface gigabitethernet1/0/2
Specifies the interface to be configured, and enters interface configuration mode. The interface can be a Layer 2 port that does not belong to an EtherChannel group or a EtherChannel interface.
Step 3 ip igmp max-groups number
Example:
Switch(config-if)# ip igmp max-groups 20
Sets the maximum number of IGMP groups that the interface can join. The range is 0 to 4294967294. The default is 208.
Note
To remove the maximum group limitation and return to the default of no maximum, use the no ip igmp max-groups interface configuration command.
Step 4 end
Example:
Switch(config-if)# end
Returns to privileged EXEC mode.
Step 5 show running-config interface interface-id
Example:
Switch# show running-config interface gigabitethernet1/0/1
Verifies your entries.
Step 6 copy running-config startup-config
Example:
Switch# copy running-config startup-config
(Optional) Saves your entries in the configuration file.
