Cisco Catalyst 2950

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
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Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
show ip igmp snooping
This is an example of output from the show ip igmp snooping mrouter vlan 1 command:
Note In this example, Fa0/3 is a dynamically learned router port, and Fa0/2 is a configured static router port.
Switch# show ip igmp snooping mrouter vlan 1
Vlan ports
---- -----
1 Fa0/2(static), Fa0/3(dynamic)
This is an example of output from the show ip igmp snooping group vlan 1 command:
Switch# show ip igmp snooping group vlan 1
Vlan Group Version Port List
---------------------------------------------------------
1 229.2.3.4 v3 fa0/1 fa0/3
1 224.1.1.1 v2 fa0/8
This is an example of output from the show ip igmp snooping querier command:
Switch> show ip igmp snooping querier
Vlan IP Address IGMP Version Port
---------------------------------------------------
1 172.20.50.11 v3 fa0/1
2 172.20.40.20 v2 Router
Related Commands Command Description
ip igmp snooping Enables IGMP snooping.
ip igmp snooping
report-suppression
Enables IGMP report suppression.
ip igmp snooping
source-only-learning
Enables IP multicast-source-only learning on the switch.
ip igmp snooping
source-only-learning age-timer
Enables and configures the aging time of the forwarding-table
entries that the switch learns by using the source-only learning
method.
ip igmp snooping vlan vlan-id Enables IGMP snooping on the VLAN interface.
ip igmp snooping vlan
immediate-leave
Configures IGMP Immediate-Leave processing.
ip igmp snooping vlan mrouter Configures a Layer 2 port as a multicast router port.
show mac address-table multicast Displays the Layer 2 multicast entries for a VLAN.