> Conor Wynne wrote:
>>>On Tue, 15 Feb 2005 15:26:07 -0000 (GMT)
>>>"Conor Wynne" <weeboy at conorwynne.com> wrote:
>>>>>>>>>>Hi all,
>>>>>>>>I'm in search of a network analysis tool to look at the headers of
>>>>network packets.
>>>>>>>>I checked out ethereal, and sadly it falls short of the job.
>>>>>>Huh ? What packet types are you trying to look at if ethereal
>>>isn't doing it for you ?
>>>>>> I need to know what the "real" length of the preamble. It should be
>> 64bits, but some vendors do not follow the specifications (apparently).
>> well its 64 bits preamble and 160 bits postamble,
> so 20 bytes in total. Where and how are you
> seeing a discrepency? see the gnuplot e.g. here:
>http://www.pixelbeat.org/cmdline.html>>> I cannot tell this with ethereal.
>> Only the nic will no about layer 1 stuff like that,
> and that info is not passed up.
> You will need to get some specialised equipment for L1.
>> I suppose you could saturate the line with 1500 byte packets
> and infer the preamble from the received packet rate.
Cheers Padraig.
>> --
> Pádraig Brady - http://www.pixelbeat.org> --- Following generated by rotagator ---
Conor.
>
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