Setting The Maximum Number Of Igmp Groups - Cisco Catalyst 4500 Series Configuration Manual

Chapter 25 Configuring IGMP Snooping and Filtering
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-25340-01
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 3.3.0SG and IOS 15.1(1)SG
Configuring IGMP Filtering
25-23