EIGRP Unequal Cost Load Balancing-Variance

EIGRP provides a mechanism to load balance over unequal cost paths through Variance Command. Variance is a number (1 to 128), multiplied by the local best metric then includes the routes with the lesser or equal metric. The default Variance value is 1, which means equal-cost load balancing.






R3#
router eigrp 100
 variance 7
 network 3.3.3.0 0.0.0.255
 network 23.1.1.0 0.0.0.255
 network 34.1.1.0 0.0.0.255
 no auto-summary