Chapter 11. Enhanced Interior Gateway Routing Protocol
Enhanced Interior Gateway Routing Protocol, also known as either EIGRP or Enhanced IGRP, is a relatively new innovation from Cisco that is based on IGRP. EIGRP shares its predecessor's distance-vector technology, but differs greatly in its operational mechanics. Additionally, EIGRP features several important new features. Some of these features were designed to expand the market potential for EIGRP. Unlike its predecessor, for example, EIGRP supports both classless and class-based IP addresses, as well as other network protocols. This allows networks using CIDR-compliant IP addresses and/or VLSM to use Cisco's distance-vector routing technology.
Other updates were designed to reduce convergence ...
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