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multicast-enabled switch. DVMRP treats tunneling interface the same way
as common physical interfaces.
Example: Configure a DVMRP tunnel on Ethernet interface vlan1 to the remote neighbor
1.1.1.1.
Switch(Config-If-Vlan1)#ip dvmrp tunnel 1.1.1.1 metric 10
16.5.3 Typical DVMRP Scenario
As shown in the figure below, the Ethernet interfaces of SwitchA and SwitchB are added
to the appropriate vlan, and DVMRP protocol is enabled on each vlan interface.
SWITCHA
SWITCHB
Et her net 1/ 1
vl an1
Et her net 1/ 1
vl an1
Et her net 1/ 2
vl an2
Fig 16-3 DVMRP network topology
The followings are the configurations of SwitchA and SwitchB.
(1) Configuration of SWITCHA:
Switch (Config)#interface vlan 1
Switch(Config-If-Vlan1)#ip dvmrp
(2) Configuration of SWITCHB:
Switch (Config)#interface vlan 1
Switch(Config-If-Vlan1)#ip dvmrp
Switch(Config-If-Vlan1)#exit
Switch (Config)#interface vlan 2
Switch(Config-If-Vlan2)# ip dvmrp
16.5.4 DVMRP Troubleshooting Help
1. Monitor and debug commands
2. DVMRP troubleshooting help