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CCIE #29033
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Can you load balance across unequal paths in EIGRP?
Show an example.
In order to load balance in EIGRP over unequal paths you must use the variance command under the EIGRP routing process.
Example:
Without using the variance command the best patch to the network 10.0.0.0/24 is through A-C-E. Now to include the A-B-E you would need to leverage the variance command. The total cost of the path A-C-E is 20 and the total cost between A-B-E is 30, a variance of 2 would allow 2(variance)*20(Best Path Cost)=40; any best path under the cost of 40 would be entered into the routing table.
router eigrp 100
variance 2
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