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Harald Welte laforge at gnumonks.orgHi David,
On Wed, Dec 14, 2011 at 10:05:31AM -0800, David A. Burgess wrote:
> Does you have an example GSMTAP/PCAP trace of a successful PDP context
> activation using OmsoSGSN? That would be useful for comparison. (And
> do you find the GPRS L3 & SNDCP decoding in the current Wireshark 1.7
> to be reliable?)
I currently don't think I have any traces ready that I could share with
you, but there might be some other people on this list who have.
In any case, if you are already getting beyound the GMM procedures (RA
UPDATE / GPRS ATTACH) in bi-directional communication between the MS and
the SGSN, then I think your L1 and RLC/MAC are working.
I guess the problem might really be the PDP CONTEXT ACTIVATE then.
I would look in the PCAP files for
* issues with using the wrong TLLI, especially during/after P-TMSI
reallocation (maybe patch out the code from OsmoSGSN)
* sequence numbering issues on the LLC layer sequence numbers
And yes, so far I havent' had much complaints about the GMM/SM/SNDCP/LLC
decoding of wireshark.
Regards,
Harald
--
- Harald Welte <laforge at gnumonks.org> http://laforge.gnumonks.org/
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