Last Updated on July 31, 2021 by Admin 1
Consider the partial output of the show ip route eigrp command:
Which of the following destination subnets have equally load-balanced routes? (Choose all that apply.)
The 18.104.22.168/27 and 22.214.171.124/24 networks have equally load-balanced routes. A default route, 0.0.0.0/0, has been configured for load balancing as well. These three subnets are each load balanced on multiple routes. The output entry for the 126.96.36.199/27 subnet is as follows:
D 188.8.131.52/27 [90/1723695] via 10.10.19.45, 00:56:17, S0/1
[90/1723695] via 10.10.19.40, 00:50:58, S0/1
This subnet can be reached by rtrA through two routes: 10.10.19.45 and 10.10.19.40 next-hop addresses. Both these routes have the same metric (1723695), and so are equally load balanced.
In the output, the 184.108.40.206/24 subnet has three equal-metric routes: 10.10.78.23, 10.10.19.40, and 10.10.70.41. These three routes are equally used to balance the load from rtrA to the 220.127.116.11/24 subnet.
The default route 0.0.0.0/0 is load balanced through two interfaces, as shown in the output:
D*EX 0.0.0.0/0 [170/2645987] via 10.10.70.41, 00:05:12, Ethernet0/0
[170/2645987] via 10.10.70.23, 00:05:12, Ethernet0/0
This load balancing of the default route could be tested by using traceroute to any IP address not represented in the routing table and verifying the path taken.
Subnets 18.104.22.168/30 and 22.214.171.124/24 are not participating in load balancing. In the given output, there is a single route (line) for both of these subnets. The rtrA router uses the route through the next-hop 10.10.78.23 to reach the 126.96.36.199/30 destination subnet. Similarly, rtrA uses the next-hop 10.10.70.41 to transmit packets to the 188.8.131.52/24 subnet.
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Configure and verify EIGRP load balancing