Router E is configured with the EIGRP variance 2 command.
What path will Router E take to reach Router A?
A.
only E-D-A
B.
only E-B-A
C.
only E-C-A
D.
both E-B-A and E-C-A
E.
both E-B-A and E-D-A
F.
all available paths.
Explanation:
By using the “variance 2 command we can share traffic to other feasible successor routes. But by
default, EIGRP only shares traffic to 4 paths. So we need to use the “maximum-paths 6 to make
sure all of these routes are used.
There’s no need for a “maximum paths” statement to even be considered. There are only three routes from router E’s perspective – one to B, one to C and one to D. Router E only cares about the next hop, not what happens afterward, in considering the maximum paths.
E’s feasible distance is 20, the path through C. D’s advertised distance – the distance from D to A – is 25. 25 is larger than 20, so D is not a feasible successor. B’s advertised distance is 10, which is less than 20, so B is a feasible successor. E will load balance over it’s best route and the feasible successor, so it will send packets to both B and C. The paths will travel E-B-A and E-C-A.
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