Cisco CATALYST 2960 - Candidate Switch and Cluster Member Switch Characteristics; Candidate switches are cluster-capable switches and switch stacks that have not yet been added to a cluster. Cluster member switches are switches and switch stacks that have actually been added to a switch cluster. Although not required, a candidate or cluster member switch can have its own IP address and password (for related considerations, see the “IP Addresses” section on page 6-12 and “Passwords” section on page 6-13).; Planning a Switch Cluster; Anticipating conflicts and compatibility issues is a high priority when you manage several switches through a cluster. This section describes these guidelines, requirements, and caveats that you should understand before you create the cluster:

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Catalyst 2960 Switch Command Reference
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Chapter 2 Catalyst 2960 Switch Cisco IOS Commands
ip igmp max-groups
Examples This example shows how to limit to 25 the number of IGMP groups that a port can join:
Switch(config)# interface gigabitethernet0/2
Switch(config-if)# ip igmp max-groups 25
This example shows how to configure the switch to replace the existing group with the new group for
which the IGMP report was received when the maximum number of entries is in the forwarding table:
Switch(config)# interface gigabitethernet0/1
Switch(config-if)# ip igmp max-groups action replace
You can verify your setting by using the show running-config privileged EXEC command and by
specifying an interface.
Related Commands Command Description
show running-config interface
interface-id
Displays the running configuration on the switch interface, including
the maximum number of IGMP groups that an interface can join and
the throttling action. For syntax information, select Cisco IOS
Configuration Fundamentals Command Reference, Release 12.2 >
File Management Commands > Configuration File Management
Commands.