Chapter 7. Enhanced Interior Gateway Routing Protocol (EIGRP)


This chapter covers the following subjects:

  • The Roots of EIGRP: An Overview of IGRP

  • From IGRP to EIGRP

  • Operation of EIGRP

  • Configuring EIGRP

  • Troubleshooting EIGRP

First released in IOS 9.21, Enhanced Interior Gateway Routing protocol (EIGRP) is, as the name says, an enhancement of the Cisco Interior Gateway Routing Protocol (IGRP). The name is apt because unlike RIPv2, EIGRP is far more than the same protocol with some added extensions. Like IGRP, EIGRP is a distance vector protocol and uses the same composite metrics as IGRP uses. Beyond that, there are few similarities.

IGRP was discontinued as of IOS releases 12.2(13)T and 12.2(Rls4)S. Although innovative in its time, modern network operators who desire more capability than RIP provides move to EIGRP or OSPF, not the moderately more capable IGRP. However, to understand EIGRP, it is useful to first examine the protocol from which it evolved.




CCIE Professional Development Routing TCP/IP (Vol. 12005)
Routing TCP/IP, Volume 1 (2nd Edition)
ISBN: 1587052024
EAN: 2147483647
Year: 2005
Pages: 233

flylib.com © 2008-2017.
If you may any questions please contact us: flylib@qtcs.net