Enhanced Interior Gateway Routing Protocol is a Cisco-proprietary advanced Distance Vector routing protocol. As a CCNP network engineer, it is important to understand how to support EIGRP as it is a very commonly implemented routing protocol. As with the previous technologies described thus far in this guide, in order to troubleshoot and support networks running EIGRP, you must have a solid understanding of the inner workings of the protocol itself. The TSHOOT certification exam objective that is covered in this chapter is:
- Troubleshoot EIGRP
While it is not possible to delve into all possible EIGRP problem scenarios, this chapter will discuss some of the most common problem scenarios when EIGRP is implemented as the Interior Gateway Protocol (IGP) of choice. This chapter is divided in the following sections:
- Enhanced Interior Gateway
- Troubleshooting Neighbor Relationships
- Troubleshooting Route Installation
- Troubleshooting Route Advertisement
- Troubleshooting Stub Routing Issues
- Troubleshooting SIA Issues
- Troubleshooting Route Redistribution Issue
- Debugging EIGRP Routing Issues
- Troubleshooting EIGRP Chapter Summary