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Forum Replies

  1. I just changed the text so that I can explain it a bit more.

    158720 = feasible distance (FD) of successor.
    412160 = feasible distance (FD) of feasible successor.

    All feasible successors that have a FD that is lower than FD of successor X multiplier will be used in load balancing.

    158720 x 3 (multiplier)= 476160

    412160 (FD of feasible successor) is lower than 476160 so we will use this feasible successor.

    I hope this explains it better.


  2. Hi Alex,

    Glad to hear you like it!

    For unequal load balancing to work, you have to mess with the variance. By default EIGRP only does load balancing over equal cost paths. I doubt you will see this much in the real world…when you use EIGRP on a LAN, you probably use the same interfaces pretty much everywhere. If you want redundancy, you probably add some extra interfaces and you will use equal cost load balancing. Even if you have some low bandwidth interfaces, I doubt anyone would want to mess with the variance to use them.


  3. Hi Rocky,

    The FD of your successor is 158720 and the FD of your feasible successor is 2300416.

    To make unequal load balancing work, the FD of your feasible successor has to be smaller than the FD of the successor multiplied with the variance.

    2300416 / 158720 = 14,59

    So if you set your variance to 15, you should be good to go :slight_smile:

  4. Hello Regis

    First of all, your topology is slightly different than that in the lab. In the lab, the connection between R1 and R2 is an Ethernet connection (10 Mbps) as opposed to your FastEthernet connection (100 Mbps). In the lab, this results in having only a single route entered into the routing table for the destination network of, specifically, the route via R3. This is due to the fact that bandwidth is included in the metric of EIGRP. The bandwidth available via R3 is better than that available via R2, so the route via R3 is preferred.

    In y

    ... Continue reading in our forum

  5. I really like the time you took to explain this to me.
    Thank you!!

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