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Chapter 5 - Introduction to IP Routing Protocols

Cisco & IP Addressing
Louis D. Rossi, Louis R. Rossi and Thomas Rossi
  Copyright © 1999 The McGraw-Hill Companies, Inc.

Summary
  An interior routing protocol communicates within an autonomous system.
  An exterior routing protocol communicates between autonomous systems.
  A distance-vector routing protocol communicates a routing table periodically to directly connected neighbors while a link-state protocol communicates changes in the state of the link when changes occur.
  A hybrid routing protocol has characteristics of both link state and distance vector.
  Metric is the criteria used by a routing protocol to select the best route to a destination.
  Administrative distance is a Cisco term that determines a measure of reliability for each IP routing protocol.
  Convergence is a term used to describe a point when all routers “see” the same network topology.
  Load balancing is when a router will use multiple paths equally to forward packets to a single destination.
  Load sharing is when routers will use multiple paths (not necessarily equally) to forward packets to a single destination.
  Route redistribution is when networks learned by one routing protocol are sent to another routing protocol.

 


 
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