DVMRP protocol equally deal with tunnel interface and general physical interface. After
configuring no ip dv multicast-routing, all of the tunnel configurations are deleted.
Example: Switch(Config)#ip dvmrp tunnel 1 12.1.1.1 24.1.1.1
20.4.4 DVMRP Configuration Examples
As shown in the following figure, add the Ethernet interfaces of Switch A and Switch
B to corresponding vlan, and enable DVMRP on each vlan interface.
SwitchA
SwitchB
Vlan 2
Vlan 1
Vlan 1
Fig 20-3DVMRP Network Topology Diagram
The configuration procedure for SwitchA and SwitchB is as follows:
(1) Configure SwitchA:
Switch (Config)#ip dvmrp multicast-routing
Switch (Config)#interface vlan 1
Switch(Config-if-Vlan1)# ip address 10.1.1.1 255.255.255.0
Switch(Config-if-Vlan1)# ip dvmrp
Switch(Config-if-Vlan1)#exit
Switch (Config)#interface vlan2
Switch(Config-if-Vlan2)# ip address 12.1.1.1 255.255.255.0
Switch(Config-if-Vlan2)# ip dvmrp
(2) Configure SwitchB:
Switch (Config)#ip dvmrp multicast-routing
Switch (Config)#interface vlan 1
Switch(Config-if-Vlan1)# ip address 12.1.1.2 255.255.255.0
Switch(Config-if-Vlan1)# ip dvmrp
Switch(Config-if-Vlan1)#exit
Switch (Config)#interface vlan 2
Switch(Config-if-Vlan2)# ip address 20.1.1.1 255.255.255.0
Switch(Config-if-Vlan2)# ip dvmrp
Since DVMRP itself does not rely on Unicast Routing Protocol, it is not necessary to
699