Multicast 159
console#show ip igmp
IGMP Admin Mode................................ Enabled
IGMP Router-Alert check........................ Disabled
IGMP INTERFACE STATUS
Interface Interface-Mode Operational-Status
--------- -------------- ----------------
vlan 100 Enabled Operational
vlan 200 Enabled Operational
The host connected to interface 1/g5 sends an IGMP join message for multicast group 225.1.1.1 in
VLAN 100. Then, the host connected to 1/g15 sends multicast data for group 225.1.1.1 in VLAN 200.
Interface 1/g5 sends and receives the multicast data from the host on interface 1/g15. The multicast
traffic must be routed because the hosts on 1/g5 and 1/g15 are in different subnets. Due to IGMP
snooping, interface 1/g10 does not send or receive any multicast data even though it is in the same
broadcast domain as interface 1/g5.
console#show bridge multicast address-table
Vlan MAC Address Type Ports
---- ----------------------- ------- ------------------
100 0100.5E01.0101 Dynamic 1/g5
Forbidden ports for multicast addresses:
Vlan MAC Address Ports
---- ----------------------- ----------------------------
100 0100.5E01.0101
console#show ip mcast mroute summary
Multicast Route Table Summary
Incoming Outgoing
Source IP Group IP Protocol Interface Interface List
--------------- --------------- --------- --------- ---------------
20.20.20.20 225.1.1.1 PIMDM vlan 200 vlan 100
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