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Catalyst 2950 Desktop Switch Software Configuration Guide
78-14982-01
Chapter 17 Configuring IGMP Snooping and MVR
Displaying IGMP Snooping Information
IGMP snooping immediate-leave is disabled on this Vlan
IGMP snooping mrouter learn mode is pim-dvmrp on this Vlan
IGMP snooping is running in IGMP_ONLY mode on this Vlan
This is an example of output from the show ip igmp snooping privileged EXEC command for a specific
VLAN interface:
Switch# show ip igmp snooping vlan 1
vlan 1
----------
IGMP snooping is globally enabled
IGMP snooping is disabled on this Vlan
IGMP snooping immediate-leave is disabled on this Vlan
IGMP snooping mrouter learn mode is pim-dvmrp on this Vlan
This is an example of output from the show ip igmp snooping mrouter privileged EXEC command for
VLAN 1:
Switch# show ip igmp snooping mrouter vlan 1
Vlan ports
---- -----
1 Gi0/1(dynamic)
1 Gi0/2(dynamic)
This example shows how to display the Layer 2 multicast entries for VLAN 1:
Switch# show mac address-table multicast vlan 1
vlan mac address type ports
-----+---------------+--------+---------+---+--------------------------------
1 0100.5e02.0203 user Gi0/1,Gi0/2
1 0100.5e00.0127 igmp Gi0/1,Gi0/2
1 0100.5e00.0128 user Gi0/1,Gi0/2
1 0100.5e00.0001 igmp Gi0/1,Gi0/2
This is an example of output from the show mac address-table multicast count privileged EXEC
command for the switch:
Switch# show mac address-table multicast count
Multicast MAC Entries for all vlans: 10
This is an example of output from the show mac address-table multicast count privileged EXEC
command for a VLAN:
Switch# show mac address-table multicast vlan 1 count
Multicast MAC Entries for vlan 1:
This example shows how to display only the user-configured multicast entries for VLAN 1:
Switch# show mac address-table multicast vlan 1 user
vlan mac address type ports
-----+---------------+--------+---------+---+--------------------------------
1 0100.5e02.0203 user Gi0/1,Gi0/2
1 0100.5e00.0128 user Gi0/1,Gi0/2
This example shows how to display the total number of entries learned by IGMP snooping for VLAN 1:
Switch# show mac address-table multicast vlan 1 igmp-snooping count
Number of user programmed entries: 2