Hybrid Routing Protocols

Some protocols can’t be so clearly defined as either distance-vector or link state. A great example is Cisco’s Enhanced IGRP (EIGRP), which is more accurately defined as a hybrid between the two. While distance vector protocols typically rely on the broadcast of complete routing tables, EIGRP instead only sends out specific updates when the metric to a route changes. Like link state protocols, EIGRP also maintains a database of neighboring routers and the network topology.

Author: Dan DiNicolo

Dan DiNicolo is a freelance author, consultant, trainer, and the managing editor of 2000Trainers.com. He is the author of the CCNA Study Guide found on this site, as well as many books including the PC Magazine titles Windows XP Security Solutions and Windows Vista Security Solutions. Click here to contact Dan.