User's Manual

36-12
S1 configuration list:
S1(config)#router rip
S1(config-router) #network vlan 1
S2 configuration list:
S2(config)#router rip
S2(config-router) #network vlan 1
S2(config-router) #exit
S2(config)#in vlan 1
S2(Config-if-Vlan1)# ip rip agg 192.168.20.0/22
36.4 RIP Troubleshooting
The RIP protocol may not be working properly due to errors such as physical connection and configuration
error when configuring and using the RIP protocol. So users should pay attention to the following:
 First ensure the physical connection is correct
 Second, ensure the interface and chain protocol are UP (use show interface command)
 Then initiate the RIP protocol (use router rip command) and configure the segment (use network
command) and set RIP protocol parameter on corresponding interfaces, such as the option between
RIP-I and RIP-II
 After that, one feature of RIP protocol should be noticed -- the Layer 3 switch running RIP protocol,
sending route and updating messages to all neighboring Layer 3 switches every 30 seconds. A Layer 3
switch is considered inaccessible if no route updating messages from the switch is received within 180
seconds, then the route to the switch will remain in the route table for 120 seconds before it is deleted.
Therefore, if an RIP route is deleted, this route item is assured to be deleted from route table after 300
seconds.
 When exchanging routing messages with CE using RIP protocol on the PE router, we should first
create corresponding VPN routing/transmitting examples to associate with corresponding interfaces.
Then enter the RIP address family mode configuring corresponding parameters. If the RIP routing
problem remains unresolved, please use debug rip command to record the debug message in three
minutes, and send them to our technical service center.