Sorry for the lack of updates lately but I’m deep into studies and when I’m not my days are still full. Rack rentals have been fully booked so I have been running Dynamips lately for labs. Here are some advice if you want to run OER/PfR in Dynamips.

You need at least 256MB RAM for your MC and border routers. Other routers will be fine with 128. If you don’t have enough memory you will get tracebacks and log messages about not being able to run Netflow.

You probably want to enable sparsemem to not need to run too many hypervisors. I use two hypervisors for the entire INE topology.

I saw some inconsistency compared to the solution guide so I might try to redo the labs later with rack rentals. You can do most of the task though in Dynamips. Where you might run into trouble is when doing verification by simulating traffic. If you want to simulate HTTP by transfering an IOS image it is not as easy as with a real device.

Running full INE topology on my laptop with Core i5 and 4GB RAM only takes about 5% CPU. I have described in earlier posts how to achieve this.

If there is interest I might try to do a video on Dynamips on how I setup my topology and how I achieve the low load.

Running OER in Dynamips
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7 thoughts on “Running OER in Dynamips

  • October 10, 2011 at 1:03 pm
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    I believe we would all love to know how you achieve this low load in GNS3.

    Thanks,
    CS

    Reply
  • January 21, 2012 at 2:32 am
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    Man I cannot get OER to learn on dynamips. Ive tried almost everything. Not sure which IOS produces the version number after the show oer master, I think that is the key. None of my IOS’s have the “version number” in the output. All 256 ram, all 3640’s

    Reply
  • January 21, 2012 at 2:34 am
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    3600 Software (C3640-JS-M), Version 12.4(25b)
    Ive tried c, and d. maybe I need a T branch?

    Reply
    • January 21, 2012 at 8:33 am
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      Check feature navigator @ Cisco for what version to run. I only run 3725 images. They work even though PfR(new name) seems to run best on real hardware.

      Reply
    • April 25, 2012 at 9:19 pm
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      Hey, did you get this to work? I am having issues also… It looks like I narrowed it down to a communication issue between the BR and MC. If I keep both roles on the same router, it works fine…

      Reply
      • April 25, 2012 at 10:05 pm
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        I haven’t tried this in a while but it should be able to work. Are you sure the routers are directly connected or at least have routing to each other?

        Reply

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