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Tuesday, February 2, 2010

Day 11: RIP Configuration

RIP version 2 or RIPv2 allows a router to discover the location of remote networks dynamically from other routers running RIPv2. In order to confiure it, you'll have to connect to each router and determine which networks are directly connected to each router, and use RIP to configure that router to advertise the location of those networks.

Enter the router configuration mode, tell it's version 2 and specify that RIP will send update information about the directly connected networks. It's extremy simple, you only have to use router rip, version 2, network directly-connected-network.
The most important is that you have to enter the networks CLASSFUL, so a class A is for example instead of the!!!!

Cairo#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Cairo(config)#router rip
Cairo(config-router)#version 2
%SYS-5-CONFIG_I: Configured from console by console

show ip route displays all routes in the routing table and indicates routes learned through RIPv2 using the prefix R.

show ip protocols verifies that RIPv2 is configured and operating on the router and that the router is receiving updates and advertising routes. Important to notice are the updates that're being sent every 30 seconds, hold down of 180 seconds and flushed after 240!

debug ip rip displays RIP advertisements on the network in real time. This is very CPU-intensive, so it should be turned off with the undebug all command after use.

The Cisco Learning Network CCENT page has a good 15' video on this subject:

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