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Cisco IE 3000 Switch Command Reference
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Chapter 2    IE 3000 Switch  Cisco IOS Commands
  show ip igmp snooping groups
Examples This is an example of output from the show ip igmp snooping groups command without any keywords. 
It displays the multicast table for the switch.
Switch# show ip igmp snooping groups
Vlan      Group          Type        Version     Port List
-------------------------------------------------------------
104       224.1.4.2      igmp        v2          Gi1/1, Gi1/2
104       224.1.4.3      igmp        v2          Gi1/1, Gi1/2
This is an example of output from the show ip igmp snooping groups count command. It displays the 
total number of multicast groups on the switch.
Switch# show ip igmp snooping groups count
Total number of multicast groups: 2
This is an example of output from the show ip igmp snooping groups dynamic command. It shows 
only the entries learned by IGMP snooping.
Switch# show ip igmp snooping groups vlan 1 dynamic
Vlan      Group          Type        Version     Port List
-------------------------------------------------------------
104       224.1.4.2      igmp        v2          Gi1/1, Fa1/8
104       224.1.4.3      igmp        v2          Gi1/1, Fa1/8
This is an example of output from the show ip igmp snooping groups vlan vlan-id ip-address 
command. It shows the entries for the group with the specified IP address.
Switch# show ip igmp snooping groups vlan 104 224.1.4.2
Vlan      Group          Type        Version     Port List
-------------------------------------------------------------
104       224.1.4.2      igmp        v2          Gi1/1, Fa1/8
Related Commands Command Description
ip igmp snooping Enables IGMP snooping on the switch or on a VLAN.
ip igmp snooping vlan mrouter Configures a multicast router port.
ip igmp snooping vlan static Statically adds a Layer 2 port as a member of a multicast group.
show ip igmp snooping Displays the IGMP snooping configuration of the switch or the 
VLAN.
show ip igmp snooping mrouter Displays IGMP snooping multicast router ports for the switch or 
for the specified multicast VLAN.