64 bytes is the minimum length of the entire frame. The mininum size of the
data portion of the frame is 38 bytes for 802.3 and 46 bytes for Ethernet.
TCP/IP Illustrated Volume 1 is the source of this data and altough slightly
dated probably the best book on TCP/IP in print.
""Burnham, Chris"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> When sniffing a TCP conversation on NAI Sniffer pro. why do ack only
packets
> show a length of 60 bytes when the minimum ether frame should be 64
> ?????????????/ where are the other 4 bytes
>
> Chris Burnham,
> Systems Engineer,
> Delphis Consulting Plc.
> Tel: +(44) 020 7916 0200
> Mob: +(44) 07799403576
> [EMAIL PROTECTED]
>
>
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