How to influence EIGRP metrics to affect route selection

EIGRP updates contain five metrics: minimum bandwidth, delay, load, reliability, and maximum transmission unit (MTU). Of these five metrics, by default, only minimum bandwidth and delay are used to compute best path. Unlike most metrics, minimum bandwidth is set to the minimum bandwidth of the entire path, and it does not reflect how many hops or low bandwidth links are in the path. Delay is a cumulative value which increases by the delay value of each segment in the path.

Therefore we can change delay on interface to affect route selection, but this method can only be used when need to influence route selection learned via EIGRP neighbor on that interface.

Another more sophisticated way is to use offset-list, the metric of the route on the router can be modified using an offset-list on the neighbor router. Offset-list will insert the value to affect RD and FD advertised towards the peer router.

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