Wireshark mailing list archives

Re: R13 S1AP message "Reroute NAS Request" is not decoding completely using 2.3.0


From: Pascal Quantin <pascal.quantin () gmail com>
Date: Fri, 17 Mar 2017 18:16:11 +0100

2017-03-17 17:48 GMT+01:00 Pascal Quantin <pascal.quantin () gmail com>:

Hi Sabyasachi,

2017-03-17 17:36 GMT+01:00 Sabyasachi Samal <sabyasachisamal () gmail com>:

Hi Anders,
Thanks for the response. I am using the message structure of TS 36.413
v13.3.0 and wireshark development version Version 2.3.0-2658-gfe285c6
(v2.3.0rc0-2658-gfe285c6). I do not know the process of filling a ticket
for wireshark. Attaching the trace here so that you guys can help.[image:
Inline image 1]


Wireshark tries to decode the S1-Message element as a UE Initial Message
PDU, and not as a S1AP message PDU. It means that the decoding is shifted
by a few bits, leading to a wrong decoding. I'm gonna fix this.


Fix under review here: https://code.wireshark.org/review/#/c/20595/

Regards,
Pascal.



On Thu, Mar 16, 2017 at 2:49 PM, Anders Broman <
anders.broman () ericsson com> wrote:

Hi,

The S1AP dissector in trunk is based on TS 36.413 V13.5.0 (2016-12) so
I guess it should decode the message.

The best is to raise a bug attaching a trace with the RerouteNASRequest
message and describe what is not dissected correctly.

Regards

Anders



*From:* wireshark-users-bounces () wireshark org [mailto:
wireshark-users-bounces () wireshark org] *On Behalf Of *Sabyasachi Samal
*Sent:* den 16 mars 2017 10:11
*To:* Community support list for Wireshark <
wireshark-users () wireshark org>
*Subject:* [Wireshark-users] R13 S1AP message "Reroute NAS Request" is
not decoding completely using 2.3.0



Hi,

R13 baseline S1AP message "RerouteNASRequest" is not decoding completely
using 2.3.0. Can anyone suggest how to proceed on this or is there any plan
supporting this.



--

Regards,
Sabyasachi

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--
Regards,
Sabyasachi

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