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Wireshark-bugs: [Wireshark-bugs] [Bug 5622] New: Incomplete support of OSI protocol dissectors f

Date: Wed, 26 Jan 2011 16:03:04 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5622

           Summary: Incomplete support of OSI protocol dissectors for CLNP
                    and OSITP for OSI based Aeronautical Telecommunication
                    Network (ATN)
           Product: Wireshark
           Version: SVN
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Enhancement
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: guettler@xxxxxx


Created an attachment (id=5801)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=5801)
Enhancement to CLNP and OSITP dissectors to allow decoding of ATN traffic.

Build Information:
Paste the COMPLETE build information from "Help->About Wireshark", "wireshark
-v", or "tshark -v".
--
In 1996 the ICAO established ATN as the standard (ICAO Annex 10, technical
provisions in ICAO doc 9705 ) for exchanging data between airborne and ground
based applications. As ATN Internet Communication Service (ATN ICS, up to OSI
Transport Layer ) is an implementation of an OSI the Wireshark dissectors for
CLNP and OSI-TP have been updated to decode ATN with its specific features:
1) CLNP PDU's could be encapsulated in IP PDU'S (IP protocol field: 0x50h, 80d)
2) CLNP security label containing ATN "Traffic Type" and "Security
Classification"
3) different TDPU sizes (due to "32-bit ATN extended Checksum")  
4) check of OSI(16-bit) and ATN extended(16-bit,32-bit) checksums

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