Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 3193] New: New Dissector: PICMG SFP.0/SFP.1 I-TDM

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https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3193

           Summary: New Dissector: PICMG SFP.0/SFP.1 I-TDM
           Product: Wireshark
           Version: SVN
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: Medium
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: dg@xxxxxxxx


Build Information:
Paste the COMPLETE build information from "Help->About Wireshark", "wireshark
-v", or "tshark -v".
--
A new protocol dissector for PICMG SFP.0 and SFP.1 I-TDM.  This dissector will
only dissect the so-called 125usec modality of I-TDM currently.  I-TDM
(Internal TDM) is a protocol used to encapsulate voice traffic into ethernet
frames and vise-versa.  The protocol is not based upon IP/UDP/TDP, but is a
totally new protocol which uses MPLS.  One problem with it is that it does not
have a convenient way to automatically identify the frames as being I-TDM, so
what I did was just choose a magic MPLS tag value (0x99887 in this case) which
the itdm dissector registers with the MPLS dissector.  This "magic tag" value
can be changed by the user in the I-TDM options panel.  This should not be too
much of a problem (hopefully!) as I-TDM is specifically designed for use only
within a cabinet (a ATCA rack for example) and solely on it's own network. 
It's not designed or intended to be used over an arbitrary network such as the
internet.

I have tested this dissector on Linux (SuSE 10.2 under KDE), but I don't have a
machine to test this on Windows.

Please have a look at it and let me know what you think.  For me at least it is
very useful...

thanks,
dan


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