RIP (Routing Information Protocol)

RIP (Routing Information Protocol)

Characteristics of RIP

• RIP is a distance vector routing protocol.
  


• Hop count is used as the metric for path selection.
  


• The maximum allowable hop count is 15.
  


• Routing updates are broadcast every 30 seconds by default.
  


• RIP is capable of load-balancing over as many as sixteen equal-cost paths. (Four paths is the default.)
  

In addition, version 2 provides the following benefits not available in version 1:

• Routing Authentication
  


• Classless routing
  


• Summarization
  

RIP Configuration

Router(config)# router rip

• Starts the RIP routing process
  

Router(config-router)# version

• Enables RIP version 2
  

Router(config-router)# network network-number

• Selects participating attached Networks
  


• Requires a major classful network number
  

RTA(config)#router rip

RTA(config-router)#network 192.168.10.0

RTA(config-router)#network 192.168.20.0

RTB(config)#router rip

RTB(config-router)#network 192.168.20.0

RTB(config-router)#network 192.168.30.0

RTB(config-router)#network 192.168.40.0

RTC(config)#router rip

RTC(config-router)#network 192.168.40.0

RTC(config-router)#network 192.168.50.0

Verifying and Troubleshooting RIP
There are two commands that you can use to verify proper operation of RIP:
1-show ip route -- The show ip route command displays your routing table
The show ip route command on RTA's router, you should see the following:

RTA#show ip routeGateway of last resort is not set.C 192.168.10.0/24 is directly connected, FastEthernet0/0
C 192.168.20.0/24 is directly connected, Serial0/0
R 192.168.30.0/24 [120/1] via 192.168.20.2, 00:00:12, Serial0/0
R 192.168.40.0/24 [120/1] via 192.168.20.2, 00:00:12, Serial0/0R 192.168.50.0/24 [120/2] via 192.168.20.2, 00:00:12, Serial0/0
2-show ip protocols -- The show ip protocols command displays values about routing protocols and the routing protocol timer information that is associated with the router.

debug ip rip -- The command to display RIP routing updates as they are sent and received.
The no debug all command turns off all debugging.

RIP v2


RTA(config)#router rip
RTA(config-router)#network 10.10.0.0
RTA(config-router)#network 10.20.0.0
RTA(config-router)#version 2
RTA(config-router)# no auto-summary

RTB(config)#router rip
RTB(config-router)#network 10.20.0.0
RTB(config-router)#network 10.30.0.0
RTB(config-router)#network 10.40.0.0
RTB(config-router)#version 2
RTB(config-router)# no auto-summary

RTC(config)#router rip
RTC(config-router)#network 10.40.0.0
RTC(config-router)#network 10.50.0.0
RTC(config-router)#version 2
RTC(config-router)# no auto-summary