Cisco WS-C2960S-24PD-L Software Guide - Page 154

Configuring IGMP Filtering Chapter 6 Configuring the System Setting the Maximum Number of IGMP Groups You can set the maximum number of IGMP groups that a Layer 2 interface can join. Use the no form of this command to set the maximum back to the default, which is no limit. Beginning in privileged EXEC mode, follow these steps to set the maximum number of IGMP groups for an interface: Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Command Purpose configure terminal Enter global configuration mode. interface interface-id Enter interface configuration mode, and enter the physical interface to configure, for example gigabitethernet0/1. The interface must be a Layer 2 port. ip igmp max-groups number Set the maximum number of IGMP groups which the interface can join. The range is from 1 to 4294967294. The default is to have no maximum set. end Return to privileged EXEC mode. show running configuration interface interface-id Verify the configuration. copy running-config startup-config (Optional) Save your entries in the configuration file. To remove the maximum group limitation and return to the default of no maximum, use the no ip igmp max-groups interface configuration command. This example shows how to limit the number of IGMP groups that an interface can join to 20. Switch# config t Switch(config)# interface fastethernet 0/12 Switch(config-if)# ip igmp max-groups 20 Switch(config-if)# end Switch# show running-config interface fastethernet 0/12 Building configuration... Current configuration : 124 bytes ! interface FastEthernet0/12 no ip address shutdown snmp trap link-status ip igmp max-groups 25 ip igmp filter 22 end 6-26 Catalyst 2900 Series XL and Catalyst 3500 Series XL Software Configuration Guide 78-6511-08