Talk:Enhanced Interior Gateway Routing Protocol/Archive 1: Difference between revisions
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EIGRP 'Hybrid' Class |
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The information presented gives the reader enough depth into EIGRP to get started. Router sims cisco publications, and good old hands on experience will fill in the rest of the blanks for practical usage.
== EIGRP 'Hybrid' Class ==
OK, This is from a CCNA textbook:
"Enhanced IGRP (EIGRP) is a classless, enhanced distance vector protocol that gives us a real edge over another Cisco proprietary protocol, Interior Gateway Routing Protocol (IGRP). That's basically why it's called Enhangced IGRP. Like IGRP, EIGRP uses the concept of an autonomous system to decribe the set of contiguous routers that run the same routing protocol and share routing information. But unlike IGRP, EIGRP includes the subnet mask in its route updates."
"EIGRP is sometimes referred to as a ''hybrid routing protocol'' because it has characteristics of both distance-vector and link-state protocols. For example EIGRP doesn't send link-state packets as OSPF does; instead, it sends traditional distance-vector traditional distrance-vector updates containing information about networks plus the cost of reaching them from the perspective of the advertising router. And EIGRP has link-state scharacteristics as well - it synchronizes routing tables between neighbors at startup, and then sends specific updates only when the topology changes occur."
(Source: Page 290 of CCNA Study Guide, Todd Lammle, ISBN 0-7821-4392-X)
So to say that EIGRP is a hybrid would be correct. If you have any doubts, complaints, whatnot, contact the author.
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