Chapter 3 Notes - Chapter 3 Notes Introduction to Dynamic...

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Chapter 3 Notes – Introduction to Dynamic Routing Protocols Introduction and Advantages Network discovery and routing table maintenance The purpose of Dynamic Routing Protocols Routing Protocol – set of processes, algorithms & messages that are used to exchange routing info. and populate the routing table with the routing protocol’s choice of best paths Purpose of a protocol: Discovery of remote networks Maintaining up-to-date routing info Choosing best path to dest. networks Ability to find a new best path if current path is no longer available Components of routing protocol: Data Structures – tables and/or databases for operation – info kept in RAM Algorithm – a finite list of steps used in accomplishing a task – used for facilitating routing info for best path determination Routing protocol messages – used to discover neighboring routers, exchange router info Dynamic Routing Protocol Operation Router shares routing messages & info with other routers using same protocol Routers exchange routing info to learn about remote networks When a router detects a topology change – protocol can advertise this change to other routers Advantages (3.1.3.1 Chart) Dynamic Routing Advantages: Admin- less work maintain config. when adding / deleting networks Protocols auto. react to topology changes Config. is less error-prone More scalable, growing network usually less problems (than static) Disadvantages: More administrator knowledge req. for config., verification & troubleshooting Classifying Dynamic Routing Protocols Overview
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Chapter 3 Notes - Chapter 3 Notes Introduction to Dynamic...

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