#1 use of some parameters deactivate others

closed
nobody
None
5
2007-10-20
2007-10-17
MeikelJ
No

Parameters work correctly if I combine Bandwidth (512), Delay (200, 20, 20) and Packet reordering (10, 20, 1) resulting in a ping roundtrip time of about 400 ms.

If I add Loss, Duplication and/or Corruption parameters, the ping roundtrip time drops to about 10 ms again.

Discussion

  • M K Nambiar

    M K Nambiar - 2007-10-17

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    Yes this is a bug. This is happening because WANem is using separate netem queuing disciplines to implement latency, loss, duplication and corruption - I don't think this should happen, ideally. Whereas packet reordering and latency share the same netem qdisc.

    I have verified that using a single netem qdisc for all the parameters alleviates the problem. Will get this updated into WANem and uploaded after testing, ASAP.

     
  • M K Nambiar

    M K Nambiar - 2007-10-20
    • status: open --> closed
     
  • M K Nambiar

    M K Nambiar - 2007-10-20

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    This has been closed and the latest WANem CD has been uploaded.