Load Balancing Across Multiple EIGRP Routes
Like OSPF, EIGRP supports the ability to put multiple equal-metric routes in the IPv4 routing table. Like OSPF, EIGRP defaults to support four such routes for each subnet, and it can be configured to other values using the maximum-paths number EIGRP subcommand. (Note that the maximum number of equal cost paths depends on the IOS version and router platform.)
In fact, Example 10-9, earlier in this chapter, showed just such an example, with router R1’s route for subnet 10.1.33.0/24. Example 10-14 revisits that same scenario, this time with both the topology table and the IP routing table displayed. Due to the default EIGRP configuration setting of maximum-paths 4, R1 places both successor routes into ...
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