View difference between Paste ID: XpSsLGxQ and SmJ9q2S7

 :: Purpose:         DHCP server Watchdog & Failover script. Read notes below
 :: Requirements:    1. Domain administrator credentials & "Logon as a batch job" rights
 ::                  2. Proper firewall configuration to allow connection
 ::                  3. Proper permissions on the DHCP backup directory
 :: Author:          vocatus on reddit.com/r/usefulscripts
-:: Version:         1.2b + Added comment block explaining syntax rules for variables
+:: Version:         1.2c * Reworked CUR_DATE variable to handle more than one Date/Time format
 ::                         Can now handle ISO standard dates (yyyy-mm-dd) and Windows default dates (e.g. "Fri 01/24/2014")
 ::                  1.2b + Added comment block explaining syntax rules for variables
 ::                  1.2  + Added functionality to recover the DHCP database BACK to the primary server after a failure. Now when the backup server detects that
 ::                         the primary server has come back online after an outage, it will export its current copy of the DHCP database, upload it back to the
 ::                         primary server, import it, and spin it back up using the most recent copy. This addresses the issue of new leases being passed out during
 ::                         an outage of the primary server and it not being aware of those leases when it comes back online.
 ::                       + Added "REMOTE_OPERATIING_PATH" variable that lets us specify where the remote server keeps its DHCP working files during operation
 ::                       + Added "UPDATED" variable to note when the script was last updated
 ::                  1.1c + Added quotes around all variables that could contain paths
 ::                       + Added full path to SC.exe to prevent failure in the event %PATH% gets corrupted or mangled (this happened in testing)
 ::                       * Fixed a glitch that could occur when pinging an assumed-down primary server that would incorrectly think it was back up
 ::                       - Removed almost every entry of "2>&1" since it's really not needed
 ::                  1.1b - Changed DATE to CUR_DATE format to be consistent with all other scripts
 ::                  1.1  - Comments improvement
 ::                       / Tuned some parameters (ping count on checking)
 ::                       / Some logging tweaks
 ::                       / Renamed FAILOVER_DELAY to FAILOVER_RECHECK_DELAY for clarity
 ::                  1.0d * Some logging tweaks
 ::                  1.0c * Some logging tweaks
 ::                  1.0 Initial write
 :: Notes:           I wrote this script after failing to find a satisfactory method of performing
 ::                  watchdog/failover between two Windows Server 2008 R2 DHCP servers.
 ::
 :: Use:             This script has two modes: "Watchdog" and "Failover."
 ::                  - Watchdog checks the status of the remote DHCP service, logs it, and then grabs the remote DHCP db backup file and imports it.
 ::                  - Failover mode is activated when the script cannot determine the status of the remote DHCP server. The script then activates
-:: Instructions:
+
-::                  1. Tune the variables in this script to your desired backup location and frequency
+
 :: Instructions:    1. Tune the variables in this script to your desired backup location and frequency
 ::                  2. On the primary server: set the DHCP backup interval to your desired backup frequency. The value is in minutes; I recommend 5 minutes.
 ::                     You do this by modifying this registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DHCPServer\Parameters\BackupInterval
 ::                  3. On the backup server:  set this script to run as a scheduled task. I recommend every 10 minutes.
 :: Notice:
 ::                 !! Make sure to set it only to run if it isn't already running! If there is a failover you could have
 ::                    Task Scheduler spawn a new instance of the script every n minutes and end up with hundreds of copies
 ::                    of this script running.
 
-:: Prep
+
 ::::::::::
 :: Prep :: -- Don't change anything in this section
 ::::::::::
-set VERSION=1.2b
+
-set UPDATED=2013-09-16
+
 cls
 set VERSION=1.2c
 set UPDATED=2014-01-27
 if "%DATE:~-5,1%"=="/" (set CUR_DATE=%DATE:~-4%-%DATE:~4,2%-%DATE:~7,2%) else (set CUR_DATE=%DATE%)
-:: VARIABLES :: - Set these
+
 
 
 :::::::::::::::
 :: VARIABLES :: -- Set these to your desired values
 :::::::::::::::
 :: Rules for variables:
 ::  * NO quotes!                       (bad:  "c:\directory\path"       )
 ::  * NO trailing slashes on the path! (bad:   c:\directory\            )
 ::  * Spaces are okay                  (okay:  c:\my folder\with spaces )
-set REMOTE_SERVER=mikado
+
 ::                                     (       \\172.16.1.5\share name  )
 :: Remote server is the PRIMARY DHCP server we're watching. Use a hostname or IP address.
 set REMOTE_SERVER=someserver
 
 :: Location of the automatic DHCP backup file on the primary server. Windows generates this automatically.
 :: Best practice is to leave this alone, unless you have a custom backup location.
 :: The script builds the backup line like this: \\%REMOTE_SERVER%\c$\%REMOTE_BACKUP_PATH%
 set REMOTE_BACKUP_PATH=Windows\system32\dhcp\backup
 
 :: Location of the operational DHCP database files on the remote (primary) server.
 :: Best practice is to leave this alone, unless you have a custom location. Changing this will break the
 :: function that re-uploads the most current db back to the primary server after a failure. This doesn't
 :: ruin the script, but if the backup server passed out any IP's while the primary server was down, the
 :: primary server won't know about them when it comes back up.
 set REMOTE_OPERATING_PATH=Windows\system32\dhcp
 
 :: Location of your backup/standby file. I normally copy directly to my backup server's DHCP directory.
 :: The script builds the local backup line like this: c:\windows\system32\dhcp\[backup folders]
 set LOCAL_BACKUP_PATH=%SystemRoot%\system32\dhcp
 
 :: When a failover is triggered, how many seconds should we wait in between each attempt to contact the primary server again?
 set FAILOVER_RECHECK_DELAY=15
 
 :: Log options. Don't put an extension on the log file name. (Important!) The script sets this later on.
 set LOGPATH=%SystemDrive%\Logs
 set LOGFILE=%COMPUTERNAME%_DHCP_watchdog
 
 :: Max log file size allowed (in bytes) before rotation and archive. I recommend setting this to 2 MB (2097152).
-:: \/ Don't touch anything below this line. If you do, you will break something.
+
-set CUR_DATE=%DATE:~-4%-%DATE:~4,2%-%DATE:~7,2%
+
 
 
 :::::::::::::::::::::::
 :: LOG FILE HANDLING :: - This section handles the log file
 :::::::::::::::::::::::
 :: Make the logfile if it doesn't exist
 if not exist %LOGPATH% mkdir %LOGPATH%
 if not exist %LOGPATH%\%LOGFILE%.log goto new_log
 
 :: Check log size. If it hasn't exceeded our size limit, jump straight to Watchdog mode
 for %%R in (%LOGPATH%\%LOGFILE%.log) do if %%~zR LSS %LOG_MAX_SIZE% goto newrun
 
 :: However, if the log was too big, go ahead and rotate it.
 pushd %LOGPATH%
 del %LOGFILE%.ancient 2>NUL
 rename %LOGFILE%.oldest %LOGFILE%.ancient 2>NUL
 rename %LOGFILE%.older %LOGFILE%.oldest 2>NUL
 rename %LOGFILE%.old %LOGFILE%.older 2>NUL
 rename %LOGFILE%.log %LOGFILE%.old 2>NUL
 popd
 
 :: And then create the header for the new log file
 :new_log
 echo ------------------------------------------------------------------------------------->> %LOGPATH%\%LOGFILE%.log
 echo  Initializing new DHCP Server Watchdog log on %CUR_DATE% at %TIME%, max log size %LOG_MAX_SIZE% bytes>> %LOGPATH%\%LOGFILE%.log
 echo ------------------------------------------------------------------------------------->> %LOGPATH%\%LOGFILE%.log
 echo.>> %LOGPATH%\%LOGFILE%.log
 
 :: New run section - if we just launched the script, write a header for this run
 :newrun
 echo ------------------------------------------------------------------------------------->> %LOGPATH%\%LOGFILE%.log
 echo  DHCP Server Watchdog v%VERSION%, %CUR_DATE%>> %LOGPATH%\%LOGFILE%.log
 echo   Running as %USERDOMAIN%\%USERNAME% on %COMPUTERNAME%>> %LOGPATH%\%LOGFILE%.log
 echo.>> %LOGPATH%\%LOGFILE%.log
 echo  Job Options>> %LOGPATH%\%LOGFILE%.log
 echo   Log location:            %LOGPATH%\%LOGFILE%.log>> %LOGPATH%\%LOGFILE%.log
 echo   Log max size:            %LOG_MAX_SIZE% bytes>> %LOGPATH%\%LOGFILE%.log
 echo   Watching primary server: %REMOTE_SERVER%>> %LOGPATH%\%LOGFILE%.log
 echo   Mirroring this DHCP db:  %REMOTE_BACKUP_PATH%>> %LOGPATH%\%LOGFILE%.log
 echo   Local backup location:   %LOCAL_BACKUP_PATH%>> %LOGPATH%\%LOGFILE%.log
 echo ------------------------------------------------------------------------------------->> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Starting Watchdog mode.>> %LOGPATH%\%LOGFILE%.log
 echo.
 echo  DHCP Server Watchdog v%VERSION%
 echo   Running as: %USERDOMAIN%\%USERNAME% on %COMPUTERNAME%
 echo   Log:        %LOGPATH%\%LOGFILE%.log
 
 
 :::::::::::::::::::
 :: WATCHDOG MODE ::
 :::::::::::::::::::
 :watchdog
 
 :: Ping the server to see if it's up
 echo.
 echo   Verifying proper operation of DHCP server on %REMOTE_SERVER%, please wait...
 echo.
 echo %CUR_DATE% %TIME%         Pinging %REMOTE_SERVER%...>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Pinging %REMOTE_SERVER%...
 ping %REMOTE_SERVER% -n %FAILOVER_RECHECK_DELAY% >NUL
 if %ERRORLEVEL%==1 echo %CUR_DATE% %TIME% WARNING %REMOTE_SERVER% failed to respond to ping. && echo %CUR_DATE% %TIME% WARNING %REMOTE_SERVER% failed to respond to ping.>> %LOGPATH%\%LOGFILE%.log
 if not %ERRORLEVEL%==1 echo %CUR_DATE% %TIME% SUCCESS %REMOTE_SERVER% responded to ping. && echo %CUR_DATE% %TIME% SUCCESS %REMOTE_SERVER% responded to ping.>> %LOGPATH%\%LOGFILE%.log
 
 :: Check & Log
 echo %CUR_DATE% %TIME%         Checking DHCP server status on %REMOTE_SERVER%...>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Checking DHCP server status on %REMOTE_SERVER%...
 
 :: Reset ERRORLEVEL back to 0
 ver > NUL
 
 :: Use "SC" to check the status of "Dhcpserver" service, find the "RUNNING" state, and act accordingly based on the return code
 %WINDIR%\System32\sc.exe \\%REMOTE_SERVER% query Dhcpserver | find "RUNNING" >NUL
 if %ERRORLEVEL%==0 echo %CUR_DATE% %TIME% SUCCESS The DHCP service is running on %REMOTE_SERVER%.>> %LOGPATH%\%LOGFILE%.log
 if %ERRORLEVEL%==0 echo %CUR_DATE% %TIME% SUCCESS The DHCP service is running on %REMOTE_SERVER%.
 
 :: This section only executes if the test failed.
 if not %ERRORLEVEL%==0 (
 	echo %CUR_DATE% %TIME% FAILURE The DHCP service is not running on %REMOTE_SERVER%.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME%         Activating failover procedure. Local DHCP server will be initialized using most recent successful backup.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME% FAILURE The DHCP service is not running on %REMOTE_SERVER%.
 	echo %CUR_DATE% %TIME%         Activating failover procedure. Local DHCP server will be initialized using most recent successful backup.
 	goto failover
 	)
 
 :: Reset ERRORLEVEL back to 0
 ver > NUL
 
 :: Fetch
 echo %CUR_DATE% %TIME%         Fetching DHCP database backup from %REMOTE_SERVER%...>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Fetching DHCP database backup from %REMOTE_SERVER%...
 xcopy "\\%REMOTE_SERVER%\c$\%REMOTE_BACKUP_PATH%\*" "%LOCAL_BACKUP_PATH%\backup_new_pending\" /E /Y /Q >NUL
 
 :: If the copy SUCCEEDED, this executes
 if %ERRORLEVEL%==0 (
 	echo %CUR_DATE% %TIME% SUCCESS Backup fetched from %REMOTE_SERVER%.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME% SUCCESS Backup fetched from %REMOTE_SERVER%.
 	echo %CUR_DATE% %TIME%         Rotating database backups...>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME%         Rotating database backups...
 	:: Rotate backups and use newest copy
 	rmdir /S /Q %LOCAL_BACKUP_PATH%\backup5
 	if exist "%LOCAL_BACKUP_PATH%\backup4" move /Y "%LOCAL_BACKUP_PATH%\backup4" "%LOCAL_BACKUP_PATH%\backup5"
 	if exist "%LOCAL_BACKUP_PATH%\backup3" move /Y "%LOCAL_BACKUP_PATH%\backup3" "%LOCAL_BACKUP_PATH%\backup4"
 	if exist "%LOCAL_BACKUP_PATH%\backup2" move /Y "%LOCAL_BACKUP_PATH%\backup2" "%LOCAL_BACKUP_PATH%\backup3"
 	if exist "%LOCAL_BACKUP_PATH%\backup" move /Y "%LOCAL_BACKUP_PATH%\backup" "%LOCAL_BACKUP_PATH%\backup2"
 	move /Y "%LOCAL_BACKUP_PATH%\backup_new_pending" "%LOCAL_BACKUP_PATH%\backup" >NUL
 	echo %CUR_DATE% %TIME%         Database backups rotated.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME%         Database backups rotated.
 	)
 
 :: If the copy FAILED, this executes:
 if not %ERRORLEVEL%==0 (
 	echo %CUR_DATE% %TIME% WARNING There was an error copying the backup from %REMOTE_SERVER%.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME%         You may want to look into this since we were able to check the DHCPserver service status but the file copy failed.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME%         Skipping new database import due to copy failure.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME%         Job complete with errors.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME% WARNING There was an error copying the backup from %REMOTE_SERVER%.
 	echo %CUR_DATE% %TIME%         You may want to look into this since we were able to check the DHCPserver service status but the file copy failed.
 	echo %CUR_DATE% %TIME%         Skipping new database import due to copy failure.
 	echo %CUR_DATE% %TIME%         Job complete with errors.
 	)
 
 :: Import database
 echo %CUR_DATE% %TIME%         Starting local DHCP server to import new database...>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Starting local DHCP server to import new database...
 	net start Dhcpserver
 echo %CUR_DATE% %TIME%         Local DHCP server running. Performing import...>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Local DHCP server running. Performing import...
 	netsh dhcp server restore "%LOCAL_BACKUP_PATH%\backup"
 echo %CUR_DATE% %TIME%         Import complete.>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Import complete.
 echo %CUR_DATE% %TIME%         Stopping local DHCP server...>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Stopping local DHCP server...
 	sc stop Dhcpserver
 echo %CUR_DATE% %TIME%         Local DHCP server stopped.>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Local DHCP server stopped.
 echo %CUR_DATE% %TIME% SUCCESS Job complete, DHCP database backed up and ready for use. Exiting.>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME% SUCCESS Job complete, DHCP database backed up and ready for use. Exiting.
 goto EOF
 
 
 :::::::::::::::::::
 :: FAILOVER MODE ::
 :::::::::::::::::::
 
 :failover
 :: Log this AND display to console
 echo %CUR_DATE% %TIME% WARNING Failover activated.>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Starting local DHCP server using most recent successful backup...>> %LOGPATH%\%LOGFILE%.log
 echo.
 echo %CUR_DATE% %TIME% WARNING Could not contact primary DHCP server %REMOTE_SERVER%. Failover activated.
 echo %CUR_DATE% %TIME%         Starting local DHCP server using most recent successful backup...
 echo.
 	net start Dhcpserver
 echo %CUR_DATE% %TIME%         Local DHCP server started.>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Entering monitoring loop. Checking if %REMOTE_SERVER% is back up every %FAILOVER_RECHECK_DELAY% seconds...>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME%         Local DHCP server started.
 echo %CUR_DATE% %TIME%         Entering monitoring loop. Checking if %REMOTE_SERVER% is back up every %FAILOVER_RECHECK_DELAY% seconds...
 
 
 :failover_loop
 :: First we ping the server
 ping %REMOTE_SERVER% -n 5 >NUL
 :: If no ping response, this section executes
 IF NOT %ERRORLEVEL%==0 (
 	echo %CUR_DATE% %TIME% FAILURE No ping response from %REMOTE_SERVER%. Waiting %FAILOVER_RECHECK_DELAY% seconds to check again.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME% FAILURE No ping response from %REMOTE_SERVER%. Waiting %FAILOVER_RECHECK_DELAY% seconds to check again.
 	ping localhost -n %FAILOVER_RECHECK_DELAY% >NUL
 	goto failover_loop
 	)
 
 :: If yes ping response, this section executes
 :: This declaration is required to get the nested IF ERRORLEVEL test to function correctly
 SETLOCAL ENABLEDELAYEDEXPANSION
 if not %ERRORLEVEL%==1 (
 	echo %CUR_DATE% %TIME% NOTICE  %REMOTE_SERVER% is responding to pings.>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME% NOTICE  %REMOTE_SERVER% is responding to pings.
 	echo %CUR_DATE% %TIME%         Checking DHCP server status on %REMOTE_SERVER%...>> %LOGPATH%\%LOGFILE%.log
 	echo %CUR_DATE% %TIME%         Checking DHCP server status on %REMOTE_SERVER%...
 
 	:: This section checks to see if the Dhcpserver service is back up and acts accordingly
 	%WINDIR%\System32\sc.exe \\%REMOTE_SERVER% query Dhcpserver | find "RUNNING" >NUL
 		:: The exclamation points around ERRORLEVEL here prevent it from incorrectly being expanded using the external ERRORLEVEL results from the first IF statement
 		if !ERRORLEVEL!==0 (
 				echo %CUR_DATE% %TIME% SUCCESS The DHCP service is running on %REMOTE_SERVER%.>> %LOGPATH%\%LOGFILE%.log
 				echo %CUR_DATE% %TIME% SUCCESS The DHCP service is running on %REMOTE_SERVER%.
 				echo %CUR_DATE% %TIME%         Primary DHCP server %REMOTE_SERVER% is back up. Beginning recovery procedures...>> %LOGPATH%\%LOGFILE%.log
 				echo %CUR_DATE% %TIME%         Primary DHCP server %REMOTE_SERVER% is back up. Beginning recovery procedures...
 
 				:: Back up the database that we've been running temporarily while the primary server was down
 				echo %CUR_DATE% %TIME%         Exporting the current DHCP database...>> %LOGPATH%\%LOGFILE%.log
 				echo %CUR_DATE% %TIME%         Exporting the current DHCP database...
 				netsh dhcp server backup %TEMP%\DHCP-RECOVERY
 
 				:: Stop our local server since we're done performing DHCP server duties
 				echo %CUR_DATE% %TIME%         Stopping local DHCP server...>> %LOGPATH%\%LOGFILE%.log
 				echo %CUR_DATE% %TIME%         Stopping local DHCP server...
 				sc stop Dhcpserver
 
 				:: Send the database back to the primary server
 				echo %CUR_DATE% %TIME%         Uploading current DHCP database to %REMOTE_SERVER%...>> %LOGPATH%\%LOGFILE%.log
 				echo %CUR_DATE% %TIME%         Uploading current DHCP database to %REMOTE_SERVER%...
 				xcopy "%TEMP%\DHCP-RECOVERY\*" "\\%REMOTE_SERVER%\c$\%REMOTE_OPERATING_PATH%\DHCP-RECOVERY\" /S /Y /Q 2>NUL
 
 				:: Import the current database on the primary server
 				echo %CUR_DATE% %TIME%         Importing current DHCP database on %REMOTE_SERVER%...>> %LOGPATH%\%LOGFILE%.log
 				echo %CUR_DATE% %TIME%         Importing current DHCP database on %REMOTE_SERVER%...
 				netsh dhcp server \\%REMOTE_SERVER% restore "\\%REMOTE_SERVER%\c$\%REMOTE_OPERATING_PATH%\DHCP-RECOVERY"
 				:: force a delay to let it stop
 				ping -n 4 localhost >NUL
 
 				:: Spin the primary server back up. For some reason we have to run the command twice for it to actually start. Don't ask.
 				echo %CUR_DATE% %TIME%         Restarting DHCP server on %REMOTE_SERVER%...>> %LOGPATH%\%LOGFILE%.log
 				echo %CUR_DATE% %TIME%         Restarting DHCP server on %REMOTE_SERVER%...
 				sc \\%REMOTE_SERVER% stop Dhcpserver
 				ping localhost -n 8 >NUL
 				sc \\%REMOTE_SERVER% start Dhcpserver
 				ping localhost -n 5 >NUL
 				sc \\%REMOTE_SERVER% query Dhcpserver
 				ping localhost -n 8 >NUL
 				sc \\%REMOTE_SERVER% start Dhcpserver
 
 				REM :: Check to make sure it's working
 				REM echo %CUR_DATE% %TIME%         Verifying functionality on primary server...>> %LOGPATH%\%LOGFILE%.log
 				REM echo %CUR_DATE% %TIME%         Verifying functionality on primary server...
 				REM sc \\%REMOTE_SERVER% query Dhcpserver | find "RUNNING"
 				REM if not %ERRORLEVEL%==0 echo %CUR_DATE% %TIME% FAILURE DHCP server on %REMOTE_SERVER% is not running. You should investigate this manually.>> %LOGPATH%\%LOGFILE%.log
 				REM if %ERRORLEVEL%==0 echo %CUR_DATE% %TIME% SUCCESS DHCP server on %REMOTE_SERVER% is up and running. Recovery complete.>> %LOGPATH%\%LOGFILE%.log
 
 				:: Clean up
 				rmdir /S /Q %TEMP%\DHCP-RECOVERY
 
 				:: Done.
 				echo %CUR_DATE% %TIME%         Exiting.>> %LOGPATH%\%LOGFILE%.log
 				echo %CUR_DATE% %TIME%         Exiting.
 				goto EOF
 				)
 	)
 ENDLOCAL
 
 :: If the host responds to pings but the DHCP service isn't running, this executes
 echo %CUR_DATE% %TIME% FAILURE %REMOTE_SERVER% is responding to pings, but DHCP isn't responding (yet?). Will try again in %FAILOVER_RECHECK_DELAY% seconds.>> %LOGPATH%\%LOGFILE%.log
 echo %CUR_DATE% %TIME% FAILURE %REMOTE_SERVER% is responding to pings, but DHCP isn't responding (yet?). Will try again in %FAILOVER_RECHECK_DELAY% seconds.
 ver >NUL
 goto failover_loop
 
 ENDLOCAL
 echo.>> %LOGPATH%\%LOGFILE%.log
 :EOF