Sunday, February 10, 2008

Setting a Preferred Route by Influencing EIGRP Metrics  (Cisco Systems)

Setting a Preferred Route by Influencing EIGRP Metrics (Cisco Systems)
This document describes how to create a preferred route by influencing Enhanced Interior Gateway Routing Protocol (EIGRP) metrics. Given the topology shown in the network diagram, this document describes several ways to influence IP traffic from the clients to the servers so that the path R1>R2>R3 is preferred. The goal is to make the path R1>R2>R4 into a backup that is only used in the event of a failure at R3.


Change the delay value on the 10.1.3.0/24 segment

R4(config)# interface ethernet0/1
R4(config-if)# delay 120
!--- Delay is entered in tens of microseconds.
R4(config-if)# end
R4#

Background - EIGRP Metrics Basics
Possible Configurations
Default Load-sharing Configuration
Change the Interface Delay Parameter at R4
Use an offset-list on R4 to Modify the Composite Metric at R2
Change the Administrative Distance at R2
Change the Bandwidth at R2


Setting a Preferred Route by Influencing EIGRP Metrics (pdf)

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