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4 dvmrp troubleshooting – QTECH QSW-8300 Инструкция по настройке User Manual

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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