Cisco CDP Port-ID Identifier v1.0

@echo off
setlocal enabledelayedexpansion
rem Requires WinDump @ http://www.winpcap.org/windump/install/
rem        + WinPcap @ http://www.winpcap.org/install/default.htm
rem   OR
rem          TCPDUMP @ http://www.microolap.com/products/network/tcpdump/
echo Cisco CDP Port-ID Identifier v1.0 by Giovanni Heward (g[@]utahfd.com)
set app=windump
set output=\\?\UNC\127.0.0.1\c$\PortID.txt
rem Modify output to central share if desired (e.g. \\?\UNC\server.domain.local\share\path\PortID.txt )
for /f "tokens=4" %%i in ('route print -4 0.*^|find "0.0.0.0"') do (
    if not [%%i]==[Default] (
        for /f "tokens=3 delims=," %%s in ('wmic nicconfig get IPAddress^,SettingID /format:csv^|findstr "%%i"') do (
            for /f "delims=." %%i in ('!app! -D^|findstr "%%s"') do (
                !app! -i %%i -nn -v -s 1500 -c 1 ether[20:2] == 0x2000 | findstr "Device-ID Address Port-ID Platform"
            )>!output!
        )
    )
)
if exist !output! type !output!