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158 Multicast
8
Globally enable IGMP snooping, IP multicast, IGMP, and PIM-DM on the switch.
console(config)#ip igmp snooping
console(config)#ip multicast
console(config)#ip igmp
console(config)#ip pimdm
NOTE: Only one multicast routing protocol (PIM-SM, PIM-DM, or DVMRP) can be enabled globally on the
switch at a time.
9
Configure ports 1/g5 and 1/g10 as members of VLAN 100.
console(config)#interface ethernet 1/g5
console(config-if-1/g5)#switchport access vlan 100
console(config-if-1/g5)#exit
console(config)#interface ethernet 1/g10
console(config-if-1/g10)#switchport access vlan 100
console(config-if-1/g10)#exit
10
Configure ports 1/g15 as a member of VLAN 200.
console(config)#interface ethernet 1/g15
config-if-1/g15)#switchport access vlan 200
config-if-1/g15)#exit
console(config)#exit
The following commands show multicast and routing information before any IGMP joins or multicast
data is sent. The commands are in bold text.
console#show bridge multicast address-table
There are currently no entries in the table.
console#show ip route
Route Codes: R - RIP Derived, O - OSPF Derived, C - Connected, S - Static
B - BGP Derived, IA - OSPF Inter Area
E1 - OSPF External Type 1, E2 - OSPF External Type 2
N1 - OSPF NSSA External Type 1, N2 - OSPF NSSA External Type 2
C 10.10.10.0/24 [0/1] directly connected, vlan 100
C 20.20.20.0/24 [0/1] directly connected, vlan 200
console#show ip pimdm
Admin Mode..................................... Enabled
PIM-DM INTERFACE STATUS
Interface Interface-Mode Operational-Status
--------- -------------- ----------------
vlan 100 Enabled Operational
vlan 200 Enabled Operational