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Thread: 5120 byte nax size for TCP messages

  1. Dec 8th, 2008, 12:55 PM #1
    Crunchy Cat
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    5120 byte nax size for TCP messages

    Hi,

    I have noticed that some network programmers put a 5120 byte cap on their outbound packets. Why is this?
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  2. Dec 10th, 2008, 10:12 AM #2
    dbasnett
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    Re: 5120 byte nax size for TCP messages

    i don't understand your question really.

    tcp will use mtu / mss to determine the actual packet size transmitted.

    for ethernet a typical mtu is 1500 and on gige networks 9KB are used. the ethernet limit is based on early shared medium requirements that one device not dominate the medium.
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  3. Dec 11th, 2008, 07:32 AM #3
    dilettante
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    Re: 5120 byte nax size for TCP messages

    Lots of people say "packet" when they mean something else, usually one call to SendData (which is not a packet at all and can be a whole file).
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