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

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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Mon, 5 Jan 2009 14:50:12 -0800 (PST)

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3112





--- Comment #27 from Sake <sake@xxxxxxxxxx>  2009-01-05 14:50:11 PDT ---
Hmmm...

http://www.cisco.com/en/US/docs/switches/lan/catalyst2900xl_3500xl/catalyst1900_2820/version9.00.00/relnotes/r1023104.html

"The CDP checksum algorithm was changed to be compatible with the Cisco IOS
software. Previously, when a CDP packet has an odd number of bytes and the
value of the last byte is greater than 0x80, the device sending the packet is
not recognized as a neighbor."

Sounds related...


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