Setting The Maximum Number Of Igmp Groups - Cisco Catalyst 4500 series Administration Manual

Chapter 27 Configuring IGMP Snooping and Filtering, and MVR
Switch# show running-config interface fastethernet2/12
Building configuration...
Current configuration : 123 bytes
!
interface FastEthernet2/12
no ip address
shutdown
snmp trap link-status
ip igmp max-groups 25
ip igmp filter 4
end

Setting the Maximum Number of IGMP Groups

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 is no limit.
This restriction can be applied to Layer 2 ports only. You cannot set a maximum number of IGMP groups
Note
on routed ports (or SVIs) or on ports that belong to an EtherChannel port group.
To apply an IGMP profile on a switch port, perform this task:
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# interface interface-id
Step 3
Switch(config-if)# ip igmp max-groups
number
Step 4
Switch(config-if)# end
Step 5
Switch# show running-configuration
interface interface-id
Step 6
Switch# copy running-config
startup-config
This example shows how to limit the number of IGMP groups that an interface can join to 25:
Switch# configure terminal
Switch(config)# interface fastethernet2/12
Switch(config-if)# ip igmp max-groups 25
Switch(config-if)# end
Switch# show running-config interface fastethernet2/12
Building configuration...
Current configuration : 123 bytes
!
OL_28731-01
Purpose
Enters global configuration mode.
Enters interface configuration mode, and enter the physical
interface to configure, for example, gigabitethernet1/1. The
interface must be a Layer 2 port that does not belong to an
EtherChannel group.
Sets the maximum number of IGMP groups that the interface can
join. The range is from 0 to 4,294,967,294. By default, no
maximum is set.
To remove the maximum group limitation and return to the default
of no maximum, use the no ip igmp max-groups command.
Returns to privileged EXEC mode.
Verifies the configuration.
(Optional) Saves your entries in the configuration file.
Software Configuration Guide—Release IOS XE 3 6.0E and IOS 15.2(2)E
Configuring IGMP Filtering
27-33