EIGRP: Unequal cost load balancing

1. Use the variance command.

2. Default variance is 1.

3. Do determine the variance value use the command show ip eigrp topology.

Example:

3825-1#sh ip eigrp topo
IP-EIGRP Topology Table for AS(90)/ID(192.168.10.1)
Codes: P – Passive, A – Active, U – Update, Q – Query, R – Reply,
r – reply Status, s – sia Status

P 10.1.2.0/24, 1 successors, FD is 20514560
via 10.1.24.2 (20514560/28160), Serial1/0
via 10.1.34.2 (40514560/28160), Serial1/1
P 10.1.24.0/30, 1 successors, FD is 20512000
via Connected, Serial1/0
P 10.1.34.0/30, 1 successors, FD is 40512000
via Connected, Serial1/1
P 192.168.10.0/30, 1 successors, FD is 28160
via Connected, GigabitEthernet0/0

 

Feasible distance of feasible successor is two times of the successor’s.

3825-1(config)#router eigrp 90
3825-1(config-router)#variance 2
3825-1(config-router)#end

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