Chapter 7. Troubleshooting EIGRP

This chapter covers the following EIGRP troubleshooting topics:

• Troubleshooting EIGRP neighbor relationships

• Troubleshooting EIGRP route advertisement

• Troubleshooting EIGRP route installation

• Troubleshooting EIGRP route flap

• Troubleshooting EIGRP route summarization

• Troubleshooting EIGRP route redistribution

• Troubleshooting EIGRP dial backup

• EIGRP error messages

This chapter discusses some of the common problems in EIGRP and how to resolve those problems. Debugs, configurations, and useful show commands are also given where necessary.

NOTE

Debugs can be CPU- intensive and can adversely affect your network. Therefore, debugs are not recommended on a production network unless being instructed by Cisco's Technical Assistance Center (TAC).

Sometimes, there might be multiple causes for the same problem. Therefore, if one scenario doesn't fix the network problem, always check into other scenarios.