Enable Multicast Router Port

1. Enter the configure mode for the VLAN.

   SEFOS# configure terminal
   SEFOS(config)# vlan 4
   

2. Enable static configuration of multicast router ports.

   SEFOS(config-vlan)# ip igmp snooping mrouter extreme-ethernet 0/8
   SEFOS(config-vlan)# ip igmp snooping mrouter extreme-ethernet 0/9
   SEFOS(config)# end
   

3. Review the configuration.

   SEFOS# show ip igmp snooping mrouter
    
   Vlan   Ports
   -----  ------
   1. Ex0/8(static), Ex0/9(static)
   

4. Send a query message on port 2, and review the configuration in switch A.

   SEFOS# show ip igmp snooping mrouter
    
   Vlan   Ports
   -----  ------
       1  Ex0/1(dynamic)
   Ex0/8(static), Ex0/9(static)
   

   Router ports are learned on reception of PIM or OSPF messages from a router.