Please can you give me some idea of the syntax to use with text2pcap - I
cannot see anything in the help referring to a "DLT_ value" (in fact I'm not
sure what a DLT_ is anyway).
-----Original Message-----
From: Guy Harris
Sent: Saturday, October 22, 2011 8:24 PM
To: Community support list for Wireshark
Subject: Re: [Wireshark-users] ISDN Layer 3 decode
On Oct 22, 2011, at 11:13 AM, Keith French wrote:
The software that I would really like to load into Wireshark is Aethra's
PC_108XP. This software serves as the expert software for many of their
analysers and I think now that the "Export to Ethereal" option (I take
your point about the possible age of formats here), is only for their ADSL
& Ethernet analysers, not my ISDN, & Q.Sig analyser. Capinfos cannot open
its native .aps format,
Well, if you have some .aps files and the corresponding "export as text"
dumps, we might e able to reverse-engineer the format.
using the Export to Ethereal to a .cap shows up in capinfos as:-
File name: C:\Users\Keith\Desktop\Environment Agency\QSig
Traces\test.cap
File type: Wireshark/tcpdump/... - libpcap
File encapsulation: OpenBSD PF Firewall logs, pre-3.4
Well, somebody at Aethra screwed up big-time there. They chose 17 as the
link-layer type value; I doubt they were *so* crazy as to think that a PF
log would be the right format, so they were probably looking at some
non-OpenBSD system that didn't use 17 for some other purpose and decided
"hey, this is available" without bothering to tell the Ethereal/Wireshark
developers. Maybe they wrote their own plugin for Ethereal/Wireshark or
built their own modified version.
Hence why I think my best bet (if it is even possible) is to take the
Layer 3 hex (and L2 if needed) & some how use text2pcap to try & load it
into Wireshark.
If the frame begins with a LAPD header, try using 203 as the DLT_ value in
text2pcap (after tweaking the hex dump if necessary to make text2pcap handle
it).
The other analyser that I have borrowed that can output its D channel
decode to Wireshark is called a "Mty Eye"
As soon as I saw "Eye" I wondered whether this was at all related to
Innoventif's EyeSDN capture devices:
http://www.innoventif.com/
from MOESARC TECHNOLOGY UK LTD. As I mentioned before it uses a .TRC file,
which Wireshark can read and running capinfos on it shows:-
File name: C:\Users\Keith\Documents\Mty Eye Analyser\Lab
Traces\Mty Eye QSig Trace.trc
File type: EyeSDN USB S0/E1 ISDN trace format
...and, sure enough, I was right. They might be reselling the EyeSDN boxes
under their own name - they're listed as a distributor:
http://www.innoventif.com/4_1_0.html
Innoventif contributed support to Ethereal/Wireshark to read their file
format.
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