EIGRP Timer/metric

EIGRP hello and hold time can be change under interface configuration mode.

#interface fa0/0
( )#ip hello-interval eigrp 100 30
( )#ip hold-time eigrp 100 120

100 - AS number
30 - seconds
120 - seconds

EIGRP Metric default
K1= 1, K2=0, K3=1, K4=0, K5=0
metric = [K1*bandwidth + (K2*bandwidth)/(256 - load) + K3*delay] * [K5/(reliability + K4)]

This K value can be changed under router eigrp 100
metric weights (tos)0 1 0 0 0 0 (change the K3 value to 0 )

If K value mismatched, neighbor will not form.

%DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 10.1.1.1 (Ethernet0/0) is down: K-value mismatch