Cisco Catalyst 2960 Series User Manual

PurposeCommand or Action
1/0/1
Disables the flooding of multicast traffic during a
spanning-tree TCN event.
no ip igmp snooping tcn flood
Example:
Switch(config-if)# no ip igmp snooping tcn
Step 4
By default, multicast flooding is enabled on an interface.
To re-enable multicast flooding on an interface, use
the ip igmp snooping tcn flood interface
configuration command.
Note
flood
Returns to privileged EXEC mode.end
Example:
Switch(config)# end
Step 5
Verifies the TCN settings.show ip igmp snooping
Example:
Switch# show ip igmp snooping
Step 6
(Optional) Saves your entries in the configuration file.copy running-config startup-config
Example:
Switch# copy running-config startup-config
Step 7
Configuring the IGMP Snooping Querier
Follow these steps to enable the IGMP snooping querier feature in a VLAN:
Consolidated Platform Configuration Guide, Cisco IOS Release 15.2(4)E (Catalyst 2960-X Switches)
142
How to Configure IGMP Snooping and MVR

Cisco Catalyst 2960 Series Specifications

General

Layer	Layer 2
Power over Ethernet (PoE)	Available on some models
RAM	128 MB
Flash Memory	32 MB
MAC Address Table Size	8000
Operating Temperature	0°C to 45°C (32 to 113°F)
Ports	24 or 48 x 10/100/1000