Manual

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Москва, Новозаводская ул., 18, стр. 1
239
DVMRP 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 enable
(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 enable
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 configure
Unicast Routing Protocol. This is the difference from PIM-DM and PIM-SM.
28.7.4 DVMRP Troubleshooting
In configuring and using DVMRP Protocol, DVMRP Protocol might not operate normally
caused by physical connection or incorrect configuration. Therefore, the user should pay
attention to the following issues:
Firstly to assure that physical connection is correct;
Next, to assure the Protocol of Interface and Link is UP (use show interface command);
Please check if the correct IP address is configured on the interface (use ip address
command);
Afterwards, enable DVMRP Protocol on the interface (use ip dvmrp command and ip dv
multicast-routing command);
Multicast Protocol requires RPF Check using unicast routing; therefore the correctness of
SwitchB
Vlan 1
Vlan 1
Vlan 2
SwitchA