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21-13

Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E

78-14099-04

Chapter 21 Configuring IGMP Snooping

Configuring IGMP Snooping

This example shows how to display the multicast router interfaces in VLAN 1:

Router# show ip igmp snooping mrouter interface vlan 1

vlan ports

-----+----------------------------------------

1 Gi1/1,Gi2/1,Fa3/48,Router

Router#

Displaying MAC Address Multicast Entries

To display MAC address multicast entries for a VLAN, perform this task:

This example shows how to display MAC address multicast entries for VLAN 1:

Router# show mac-address-table multicast vlan 1

vlan mac address type qos ports

-----+---------------+--------+---+--------------------------------

1 0100.5e02.0203 static -- Gi1/1,Gi2/1,Fa3/48,Router

1 0100.5e00.0127 static -- Gi1/1,Gi2/1,Fa3/48,Router

1 0100.5e00.0128 static -- Gi1/1,Gi2/1,Fa3/48,Router

1 0100.5e00.0001 static -- Gi1/1,Gi2/1,Fa3/48,Router,Switch

Router#

This example shows how to display a total count of MAC address entries for a VLAN:

Router# show mac-address-table multicast 1 count

Multicast MAC Entries for vlan 1: 4

Router#

Displaying IGMP Snooping Information for a VLAN Interface

To display IGMP snooping information for a VLAN interface, perform this task:

This example shows how to display IGMP snooping information on the VLAN 200 interface:

Router# show ip igmp interface vlan 200

Vlan200 is up, line protocol is up

Internet address is 172.20.52.94/27

IGMP is enabled on interface

Current IGMP version is 2

CGMP is disabled on interface

IGMP query interval is 60 seconds

IGMP querier timeout is 120 seconds

IGMP max query response time is 10 seconds

Last member query response interval is 1000 ms

Inbound IGMP access group is not set

IGMP activity: 0 joins, 0 leaves

Multicast routing is enabled on interface

Command Purpose

Router# show mac-address-table multicast vlan_ID

[count]

Displays MAC address multicast entries

for a VLAN.

Command Purpose

Router# show ip igmp interface vlan_ID

Displays IGMP snooping information on a VLAN

interface.