Enhanced Interior Gateway Routing Protocol Guide, Meaning , Facts, Information and Description
Enhanced Interior Gateway Routing Protocol (EIGRP) is a Cisco proprietary routing protocol based on their original IGRP. EIGRP works like a link state and distance vector routing protocol to optimize the use of bandwidth and processing power on the local router. The data it collects is stored in three tables:Neighbor table- stores data about the interfaces of directly conected devices
Topology table- stores a overview of the network toplogy gathered using Diffusing Update Algorithm(DUAL), this is its link-state component of EIGRP
Routing table- stores the Feasible distance(shortest path) to all destination networks, this is the distance vector component of EIGRP
It is able to deal with classless interdomain routing allowing the use of VLSM which is its main advantage over its predecessor. Its main disadvantage is that it only runs on Cisco equipment which may lead to an organization being locked in to this vendor.
EIGRP can run separate routing processes for IP, IPX and AppleTalk. However, this does not facilitate translation between protocols.