Script to start traceroute if continuous ping fails, output to log

I want to continuously ping my home public IP address, and if the ping fails automatically do a traceroute to see where it's failing.

I've been trying to follow the comments made here:

http://social.technet.micro开发者_如何学Pythonsoft.com/Forums/en-US/ITCG/thread/efc97c66-60a6-4fd7-8be4-4b454d040ce5

Windows compatible would be preferable, bat or vbs would be best.

From anywhere on the internet I will lose my connection to my home network. From work I have started a ping and when it drops I've done a traceroute and it fails before it gets to my IP.

I need a log file to prove that it is not my modem, or router, or computer.

---

@echo off
set Address=google.com
:Loop
PING -n 5 127.0.0.1>nul
echo Pinging %Address%
%SystemRoot%\system32\ping.exe -n 1 %Address% | %SystemRoot%\system32\find.exe "TTL=" > NUL >> C:\pingtest\logfile.log
if %ERRORLEVEL% EQU 0 goto :Loop
echo Trace route %Address% at %date% %time% >> C:\pingtest\logfile.log
tracert %Address% >> C:\pingtest\logfile.log
goto Loop

This is what I ended up going with, if anyone else ever needs this. Essentially the "Ping -n 127.0.0.1>Nul" is to add a 5 second counter so that it only pinged the destination every 5 seconds, 5 can be changed to whatever value is needed.

Windows 7 has this problem where a ping may result with something like "reply from 192.168.1.5: Destination host unreachable". So instead of erroring out it gets a reply from itself and not the error level 1. Instead of looking for Error Level 1 I choose to look for no result for TTL with "%SystemRoot%\system32\ping.exe -n 1 %Address% | %SystemRoot%\system32\find.exe "TTL=" > NUL"

Anyway, I'm sure the other answers here were very similar and may have worked, so I am ranking them up, but marking this as the answer.

Thanks all!

---

@echo off
set Address=www.google.com
set LogDir=C:\pingtest
md %LogDir%
%SystemRoot%\explorer.exe "%LogDir%"
echo PingTest script to monitor network connection.  Control-C to exit.
echo Tests connection by pinging %Address%.  Logs to %LogDir%\logfile.log.
echo %date% %time% Initial tracert (trace route) to %Address% >> %LogDir%\logfile.log
tracert %Address% >> %LogDir%\logfile.log
:Loop
REM  5 second delay
PING -n 5 -w 1 127.0.0.1>nul
echo %date% %time% Pinging %Address%
echo %date% %time% Pinging %Address% >> %LogDir%\logfile.log
%SystemRoot%\system32\ping.exe -n 1 %Address% | %SystemRoot%\system32\find.exe "TTL=" > NUL
if %ERRORLEVEL% EQU 0 goto :Loop
echo %date% %time% PING ERROR - Tracing route to %Address%
echo %date% %time% PING ERROR - Tracing route to %Address% >> %LogDir%\logfile.log
tracert %Address% >> %LogDir%\logfile.log
goto Loop

---

You could make a simple batch file that tries a ping and if it fails does a tracert, eg:

setlocal
set host=www.bigpond.com
set logfile=nettest.log
echo %date% %time%>>%logfile%
ping %host%>>%logfile%
if ERRORLEVEL 1 tracert %host%>>%logfile
endlocal

There's plenty of scope for refinement here.

Then create a scheduled task that runs it every five minutes or whatever suits you.

Alternatively you could include a loop with a 'sleep' in it. There's a poor man's sleep at Sleeping in a batch file that uses:

choice /d y /t 5 > nul

---

:LOOP
FOR /F "usebackq tokens=1" %%F IN (`ping localhost -n 1 -w 1 ^| find "Request"`) DO (
  IF "%%F"=="Request" (
    tracert localhost
  )
)>>log.txt
FOR /F "usebackq tokens=1-4 delims=:." %%G IN (`echo %time%`) DO IF %G%H GTR 1400 GOTO:EOF
GOTO LOOP

Basically, this states do ping, if it finds a line that has an instance of the word Request (which only appears if you can't ping the address) perform a tracert. The -n and -w switches in PING tell it to jump only once and timeout after 1 second of not getting a response. This is perfectly fine if you are pinging your localhost. The second FOR statement is to have a stopping point. Change the 1400 to a time you wish for the script to stop (in military time of course).

---

I have just been looking for the same thing to investigate why a VPN keeps dropping on a wired connection, used one of the batch file suggestions above which was great. Also found a nice little Java App which packages it for you here Internet Connectivity Monitor

Simple to use and does the job :-)