Cisco CATALYST 2960 - Stack Membership; A standalone switch is a stack with one member that is also the master. You can connect one standalone switch to another (Figure 7-1 on page 7-4) to create a stack containing two stack members, with one of them as the master. You can connect standalone switches to an existing stack (Figure 7-2 on page 7-4) to increase the stack membership.; If you replace a stack member with an identical model, the new switch functions with the same configuration as the replaced switch (assuming that the new switch is using the same member number as the replaced switch). For information about the benefits of provisioning a switch stack, see the “Stack Offline Configuration” section on page 7-7. For information about replacing a failed switch, see the “Troubleshooting” chapter in the hardware installation guide.

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Chapter 2 Catalyst 2960 Switch Cisco IOS Commands
ip igmp snooping vlan mrouter
Examples This example shows how to configure a port as a multicast router port:
Switch(config)# ip igmp snooping vlan 1 mrouter interface gigabitethernet0/22
This example shows how to specify the multicast router learning method as CGMP:
Switch(config)# ip igmp snooping vlan 1 mrouter learn cgmp
You can verify your settings by entering the show ip igmp snooping privileged EXEC command.
Related Commands Command Description
ip igmp snooping report-suppression Enables IGMP report suppression.
show ip igmp snooping Displays the snooping configuration.
show ip igmp snooping groups Displays IGMP snooping multicast information.
show ip igmp snooping mrouter Displays the IGMP snooping router ports.
show ip igmp snooping querier Displays the configuration and operation information for
the IGMP querier configured on a switch.