Understand the advantages of Cisco's EIGRP and the definition of the DUAL algorithm.
Be able to compare EIGRP to OSPF, especially in regard to the discovery and selection process.
Know how EIGRP implements VLSM and route summarization. Know how to disable the EIGRP auto-summarization feature and when this would be necessary.
Be able to define how EIGRP can be used to route LAN and WAN traffic, and be able to configure and verify both within the Cisco IOS. You should know these general topics:
The proper steps to configure EIGRP
How to implement route summarization and why
EIGRP load balancing techniques
Running EIGRP in a WAN environment
Running EIGRP as a scalable verification of the EIGRP operations