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problem capturing Jumbo frames with MaxFrameLength trimming RRS feed

  • Question

  • I have come across a problem capturing Jumbo frames. I am capturing with nmcap on a 10G NIC in p-mode which is getting a mirror of traffic that includes Jumbo frames.

    Nmcap works fine capturing but as soon a I add the /MaxFrameLength switch the capture start halting. That is, in the capture file there are long durations of time of no packets, from a few seconds to many minutes.

    My workaround is to disable Jumbo frames on the NIC. With this config I get all the frames except Jumbo ones and I can trim with MaxFrameLength.

    If anyone knows of solution to this problem I would like to hear it.

    Thanks,

    -Wes

    Friday, October 16, 2015 5:54 PM