Ethereal-dev: Re: [Ethereal-dev] is it possible to capture the traffic on STM-1/E1 ?

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From: LEGO <luis.ontanon@xxxxxxxxx>
Date: Fri, 3 Feb 2006 11:51:24 +0100
On 2/3/06, Guy Harris <gharris@xxxxxxxxx> wrote:
> Guy Harris wrote:
>
> > Ethereal includes dissectors for NBAP and RANAP.  I don't know what
> > protocols in the W-CDMA protocol suite it doesn't handle.
> >
> > I don't see any place where the NBAP dissector would be called, however,
> > so I don't know whether it will actually dissect any NBAP traffic.
>
> It looks as if NBAP is transported over (among other things) ATM AAL5 -
> this screenshot from Radcom's network analyzer suggests that:
>
>         http://www.protocols.com/pbook/ScreenCaptures/NBAP.gif
>
> We currently have no provision for dissecting NBAP atop AAL5.  Is there
> a standard VPI/VCI for NBAP?  Or should we provide a mechanism for
> associating particular VPI/VCI pairs with particular protocols?  Or
> should we have a heuristic dissector table for AAL5?

You'll find NBAP running atop sccf-uni on atm links (Q.2130 -- which
is a subset of SSCOP)  and I think you might find it over sctp (I've
never seen it myself). AFAIK There's no standard VP/VC for NBAP.

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