This worked fine and was great in our environment where CDP is enabled, Some advise disabling for security though.
Well all worked fine until I started trying it on windows 2008 and was receiving the following error message:
tcpdump.exe: PacketGetAdapterNames: The operation completed successfully. (0)
I looked around and 3.9.8 seemed to be the latest version, and doesn't offer support for windows 2008 r2 however I downloaded the trial of version 4 from here http://www.microolap.com/products/network/tcpdump/download/
Which still doesn't state it works on windows 2008.. :( -- however my batch file now works again.. :)
Anyway my rough and ready batch file contains the following:
cls
tcpdump -D
set Interface=
echo.
set /P Interface=Enter Interface Number: %=%
tcpdump -nn -v -s 1500 -i %Interface% -c 1 ether[20:2] == 0x2000 >c:\out.txt
Echo "Port Details Are" |Echo.
type c:\out.txt |findstr /R "\Device-ID \Address.[(] \Management.Addresses \Port-ID"
del c:\ out.txt >nul
pause
I will eventually re-write this as powershell or VBS so I can deploy it via SCCM to get a view of ports the servers are patched into.
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