Chapter 3. Troubleshooting RIP

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This chapter covers the following key topics:

  • Troubleshooting RIP routes installation

  • Troubleshooting RIP routes advertisement

  • Troubleshooting routes summarization in RIP

  • Troubleshooting RIP redistribution problems

  • Troubleshooting dial-on-demand (DDR) routing issues in RIP

  • Troubleshooting route flapping problem in RIP

This chapter discusses some of the common problems in RIP and tells how to resolve those problems. At this time, no RIP error messages will help troubleshooting RIP problems. As a result, you will need to rely on debugs, configurations, and useful show commands, which we'll provide where necessary in this chapter. The flowcharts that follow document how to address common problems with RIP with the methodology used in this chapter.

Debugs sometimes can be very CPU- intensive and can cause congestion on your network. Therefore, we do not recommend turning on these debugs if you have a large network (that is, more than 100 networks or subnets in RIP). Sometimes, there could be multiple causes for the same problem ‚ for example, Layer 2 is down, the network statement is wrong, and the sender is missing the network statement. Bringing up Layer 2 and fixing the network statement might not fix the network problem because the sender is still missing the network statement. Therefore, if one scenario doesn't fix the network prob-lem, check into other scenarios. The word RIP, in general, refers to both RIP Version 1 (RIP-1) and RIP Version 2 (RIP-2). The problems discussed in this chapter are mostly related to RIP-1, unless specified as RIP-2.

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Troubleshooting IP Routing Protocols
Troubleshooting IP Routing Protocols (CCIE Professional Development Series)
ISBN: 1587050196
EAN: 2147483647
Year: 2002
Pages: 260

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