Ethereal-dev: Re: [ethereal-dev] PPP decode problem (fwd)

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From: Gilbert Ramirez <gram@xxxxxxxxxx>
Date: Sat, 27 Nov 1999 16:35:25 -0600
On Sat, Nov 27, 1999 at 08:56:49AM -0600, Gerald Combs wrote:
> ---------- Forwarded message ----------
> Date: Thu, 25 Nov 1999 10:34:44 +0100
> From: Ton Van Der Doelen <Ton_Van_Der_Doelen@xxxxxxxxxxxx>
> To: gerald@xxxxxxxx
> Subject: PPP decode problem
> 
> 
> 
> Gerald,
> 
> First of all : congratulations with the nice Ethereal tool...
> Works very well...
> 
> I have one small problem with a PPP trace file which displays correctly with
> SnifferPro and WWG Domino but Ethereal wants to make LAPB out of it...

The trace file has 7 (a Sniffer-defined value) as the network type,
which we mark as LAPB.  For this trace, 7 needs to be PPP.

In the documentation I have about the Sniffer file format, 7 and 8 are
defined as:

#define NETWORK_SYNCHRO      7 /* Internetwork Analyzer */
#define NETWORK_ASYNC        8 /* Internetwork Analyzer */

Should one of these be LAPB and the other PPP? Other protocols can 
occur over serial lines, so I'm not sure what Network Associates is
trying to denote via the "async" and "synchronous" labels.

Can we be supplied with some more WAN Sniffer traces, that show more
than just PPP. That is, do you have other WAN encapsulation protocols
that you could sniff for us?

--gilbert