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Forum Replies

  1. Hi Rene,

    I am just wondering if you have seen this technology deployed in any production networks

    It sounds like a predecessor of SDN and with a great potential, but I am not sure if it has been widely deployed


  2. Hi C,

    I haven’t seen this in production networks before. The idea behind it is pretty cool, one “controller” that determines what paths to use for the network. OER however on IOS 12.4 was pretty buggy, it’s better on IOS 15 as PFR (Performance Routing).

    SDN goes one step further…it’s also about configuring the network.


  3. Hi Purushotham,

    I probably might add some extra Pfr material since it’s on the CCIE written exam, it’s not in the lab anymore though. About IWAN…I’d have to check what is included. I do have quite some DMVPN material.


  4. Hi Rene,

    I feel many concepts easy when I hear it from you. I will wait for your material on Pfr.

    Thank you for the response.

  5. Hi Rene and staff,
    thanks for your work through the forum
    Please, could you give some more explanation about the apparent contradiction below:

    1. using routes that have the same cost, OSPF can do load balancing (ECLB) on a per packet basis, that is each packet of a same flow may take a different link
    2. the router has to use CEF and CEF can’t do load balancing but only load sharing

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