16-9
Catalyst 2940 Switch Software Configuration Guide
78-15507-02
Chapter16 Configuring IGMP Snooping and M VR Configuring IGMP Snooping
Beginning in privileged EXEC mode, follow these steps to enable a static connection to a multicast
router:
To remove a multicast router port from the VLAN, use the no ip igmp snooping vlan vlan-id mrouter
interface interface-id global configuration command.
This example shows how to enable a static connection to a multicast router and verify the configuration :
Switch# configure terminal
Switch(config)# ip igmp snooping vlan 200 mrouter interface gigabitethernet0/1
Switch(config)# end
Switch# show ip igmp snooping mrouter vlan 200
vlan ports
-----+----------------------------------------
200 Gi0/1(static)
Configuring a Host Statically to Join a Group
Hosts or Layer 2 ports normally join multicast groups dynamically, but you can also statically configure
a host on an interface.
Beginning in privileged EXEC mode, follow these steps to add a Layer 2 p ort as a membe r of a multica st
group:
To remove the Layer 2 port from the multicast group, use the no ip igmp snooping vlan vlan-id static
mac-address interface interface-id global configuration command.
Command Purpose
Step1 configure terminal Enter global configuration mode.
Step2 ip igmp snooping vlan vlan-id mrouter
interface interface-id Specify the multicast router VLAN ID and specify the interface
to the multicast router. For the VLAN ID, the range is 1 to 1005.
Step3 end Return to privileged EXEC mode.
Step4 show ip igmp snooping mrouter [vlan vlan-id] Verify that IGMP snooping is enabled on the VLAN interface.
Step5 copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Step1 configure terminal Enter global configuration mode
Step2 ip igmp snooping vlan vlan-id static
mac-address interface interface-id Statically configure a Layer 2 port as a member of a multicast
group:
•vlan-id is the multicast group VLAN ID.
•mac-address is the group MAC address.
•interface-id is the member port.
Step3 end Return to privileged EXEC mode.
Step4 show ip igmp snooping mrouter vlan vlan-id
or
show mac address-table multicast vlan vlan-id
Verify that the member port is a member of the VLAN multicast
group.
Verify the member port and the MAC address
Step5 copy running-config startup-config (Optional) Save your entries in the configuration file.