Wireshark-bugs: [Wireshark-bugs] [Bug 3112] CDP Checksum Calculation Incorrect

Date: Tue, 6 Jan 2009 12:39:17 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3112


Jim Young <jyoung@xxxxxxx> changed:

           What    |Removed                     |Added
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                 CC|                            |jyoung@xxxxxxx




--- Comment #40 from Jim Young <jyoung@xxxxxxx>  2009-01-06 12:39:16 PDT ---
With Sake's patch applied 100% of the CDP packets from my historic trace files
now validate as "[correct]". ;-)

As a double-check I corrupted the check-sum on a set of my historic CDP packets
(offset 0x18-0x19 on non-tagged frames and offset 0x1c-0x1d on 802.1Q tagged
frames).  All of these packets with artificially bogus CDP Checksum values when
processed by Wireshark with Sake's patch applied generated the message
"[incorrect, should be 0xHHHH]" where 0xHHHH was exactly what the originating
CDP device had generated.


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