EIGRP stub routing

EIGRP stub routing will suppress transit eigrp updates, it receives updates but will not passon to downstream neighbor.

EIGRP route summarization

EIGRP allows you to summarize route on the interface level with command

ip summary-address eigrp 100

it creates a static route for the summarized network pointing to the null0 interface.

EIGRP metric

[K1*BW + (K2*BW)/(256-Load) + K3*Delay] * [K5/(Reliability + K4)]

The default constant values are K1 = K3 = 1 and K2 = K4 = K5 = 0.

EIGRP metric can also be manually changed using offset-list.

EIGRP timers

ip hello-timer eigrp 100 10
ip hold-timer eigrp 100 75

EIGRP distance

distance eigrp command can assign different distances for internal eigrp routes learned from different neighbors (but for the internal eigrp routes ONLY, can't use different distances for external routes learned from different neighbors).

Default route redistribution

Need to explicitly allow EIGRP to allow default route redistribution on the default route origin router.

default-information allowed inout

Load-balancing can be controlled with variance.

More information can be found at:

Configuring EIGRP

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