Load Balancing with EIGRP

[Fuzz]

As far as EIGRP is concerned, the load balancing happens over L3. It does not concern itself with the layer aspects, other than the interface being up/up of course.

To load balance over two WAN links equally, you would have to have two links of the exact same bandwidth and delay (using default K values) to get the same metric and therfore two sucessors, by default. Offset lists and unequal cost load balancing are also possible to influence the amount of routes added to the routing table. These are CCNP topics.