IPv6 Fundamentals: A Straightforward Approach to Understanding IPv6, 2nd Edition
by Rick Graziani
Chapter 15. EIGRP for IPv6
Enhanced Interior Gateway Routing Protocol (EIGRP) is a distance-vector, classless routing protocol that was released as a proprietary protocol in 1992 with IOS 9.21. As its name suggests, EIGRP is an enhancement of Cisco’s Interior Gateway Routing Protocol (IGRP). Cisco’s main purpose in developing EIGRP was to create a classless version of IGRP. EIGRP also includes several features that are not commonly found in other distance-vector routing protocols, such as IGRP and Routing Information Protocol (RIP).
Cisco released the basic functionality of EIGRP as an open standard to the IETF in RFC 7868, Cisco’s Enhanced Interior Gateway Routing Protocol (EIGRP). Other networking vendors can implement EIGRP in order to interoperate ...
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