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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Controlling Route Metrics

As a distance-vector protocol, RIP uses hop counts to determine the best route, but sometimes the shortest hop count is a route over the lowest-speed link.

To manipulate RIP routes so that the routing protocol prefers a different route, manipulate the route by using the offset command.

Exercise caution when applying an offset command to routers on a broadcast network, as the router using the offset command is modifying RIP advertisements before sending out those advertisements.

The distance command also allows you to manipulate route metrics. To assign different weights to routes so that the ones with the lower weight or administrative distance assigned are preferred, use the distance command.

To set route matrixes, use the following commands.

  • Apply a weight to all routes or a specific route and ACL. ROUTER RIP mode distance weight [ ip-address mask [ access-list-name]] Configure the following parameters:
    • weight : the range is from 1 to 255. The default is 120.
    • ip-address mask : the IP address in dotted decimal format (A.B.C.D), and the mask in slash format (/x).
    • access-list-name : the name of a configured IP ACL.
  • Apply an additional number to the incoming or outgoing route metrics. ROUTER RIP mode offset-list access-list-name {in | out} offset [ interface] Configure the following parameters:
    • prefix-list-name : the name of an established Prefix list to determine which incoming routes are modified
    • offset : the range is from 0 to 16.
    • interface : the type, slot, and number of an interface.
To view the configuration changes, use the show config command in ROUTER RIP mode.

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