Ethereal-dev: RE: [Ethereal-dev] Wrong decoding of tektronix K15 Gb file

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From: "Yann Samama" <ysamama@xxxxxxxxxx>
Date: Thu, 11 Aug 2005 11:29:37 +0200
Hi Luis,

Please find enclosed the k15 text output (zipped).

Cheers,

Yann.

-----Original Message-----
From: LEGO [mailto:luis.ontanon@xxxxxxxxx] 
Sent: jeudi 11 août 2005 01:20
To: Ethereal development; Samama, Yann [CTF:460T:EXCH]
Subject: Re: [Ethereal-dev] Wrong decoding of tektronix K15 Gb file


Hi,

On 8/10/05, Yann Samama <ysamama@xxxxxxxxxx> wrote:
> 1/ The numbers of packets and the packets themselves seen by Ethereal 
> and the K15 viewer are different.  => K15 viewer sees 257 packets 
> (from 7 to 263, see enclosed file k15.jpg).
>  => Ethereal sees 147 packets (from 1 to 147, see enclosed file
> ethereal.jpg).

Could you send in the k15's text output for the capture file you attached. Please make sure to to set the display of the packet's hex data.

> 2/ The statistics for GSM/A-Interface DTAP/GPRS Session Management 
> wrongly displays 0 for all counters from time to time.
I think that should be a problem of the tap not related to the file format.

> 3/ The start timestamp read by Ethereal differs from the one read by 
> the K15 viewer.  => K15 : 03/08/2005 22:50:20,907,373
>  => Ethereal : 04/08/2005 00:50:20,907,373
>  => So there is a 2 hours shift ; since those traces were taken in a
> country which time is GMT+2, I would suggest that there is some field
> holding the shift value wrongly taken into account?

I'I don't  even know if there is timezone data in a file. I thought it always was GMT as in some captures I got.
 
I'd need a set of very similar captures (same scenario, sources, stacks, etc.) taken using different timezone configurations to be able to dig into this.

-- 
This information is top security. When you have read it, destroy yourself.
-- Marshall McLuhan

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Description: gb_merlin.zip