Managing IPv4 and IPv6 Multicast 1255
Configuring DVMRP
The following example configures two DVMRP interfaces on the switch to
enable inter-VLAN multicast routing.
To configure the switch:
1
Globally enable IP routing and IP multicast.
console#configure
console(config)#ip routing
console(config)#ip multicast
2
Globally enable IGMP so that this L3 switch can manage group
membership information for its directly-connected hosts. Enabling IGMP
is not required if there are no directly-connected hosts; however, it is
recommended that it be enabled to ensure correct operation of multicast
routing. Disable IGMP/MLD snooping.
console(config)#ip igmp
console(config)#no ip igmp snooping
console(config)#no ipv6 mld snooping
3
Globally enable DVMRP.
console(config)#ip dvmrp
4
Enable DVMRP and IGMP on VLAN routing interfaces 10 and 20.
console(config)#interface vlan 10
console(config-if-vlan10)#ip address 192.168.10.1 255.255.255.0
console(config-if-vlan10)#ip dvmrp
console(config-if-vlan10)#ip igmp
console(config-if-vlan10)#exit
console(config)#interface vlan 20
console(config-if-vlan20)#ip address 192.168.20.1 255.255.255.0
console(config-if-vlan20)#ip dvmrp
console(config-if-vlan20)#ip igmp
console(config-if-vlan20)#exit
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