300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and ServicesDemo

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Refer to the exhibit. Site1 must use unequal-cost load balancing toward the segments behind Site2 and Site3. Some routes are being load balanced, but others are not. Which configuration enables Site1 to load balance toward all LAN segments on the remote routers?

A Site3 router eigrp 100 variance 2
B Site2 router eigrp 100 variance 2
C Site2 router eigrp 100 variance 3
D Site1 router eigrp 100 variance 3

Explanation

EIGRP applies variance on the local router that installs the routes, so it must be configured on Site1. A variance of 3 includes the feasible alternate paths to 192.168.3.0/24 and 192.168.4.0/24: each has a metric of 691200, exactly three times the successor feasible distance of 230400. Their reported distance of 204800 is lower than the successor feasible distance, so they are feasible successors. The routes to 192.168.5.0/24 and 192.168.6.0/24 already fall within variance 2; variance 3 retains them as load-balanced paths.

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300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and ServicesDemo

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