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The Routing Table

   

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Enhanced Interior Gateway Routing Protocol

  

 

EIGRP Background

  

 

New Features Found in EIGRP

  

 

EIGRP Data Structures

  

 

The Routing Table

  

 

The Topology Table

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IP Routing Fundamentals

From: IP Routing Fundamentals
Author: Mark Sportack
Publisher: Cisco Press (53)
More Information

The Routing Table

The routing table contains the least-cost routes that DUAL calculated for all known destinations. EIGRP, as with all Cisco- supported routing protocols, tracks up to six routes to each destination. Whenever a router detects a change in a single routing table entry, it must notify its neighbors of that change. These neighbors must then determine the impact that change has on their routes.

A separate routing table is maintained for each routed protocol that EIGRP is configured to support. Thus, if you are simultaneously running IP and AppleTalk, your EIGRP routers will each have two routing tables—one for each routed protocol.

   

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One of the primary architects of OpenCable, Michael Adams, explains the key concepts of this initiative in his book OpenCable Architecture.

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