for Windows Server 2003
Instructions how to do a new installation of DHCP redundancy.
NOTE! If you want to upgrade to version 1.52 from an older installation, read the Upgrade
NOTE! .Net-framework v.2.0 or higher must be installed on the second server.
NOTE! Can only be installed on English, French, Polish, German or Swedish versions of 2003 Server
1. Download the latest version of DHCP-Redanducy.zip from http://www.c64gg.com/dhcp-
2. Create a directory on the second server and unzip the files there.
3. Install the DHCP Server service on the second server, don’t create any scopes. If you have an AD
and the main DHCP-server is authorized by the AD then the redundant DHCP service also has to be
4. Go to Computer Management and stop the DHCP Server service.
5. Copy the file DHCP-Backup.bat to your main server. This .bat file extracts the info from the main
DHCP service that will be imported into the second service.
6. Edit the file DHCP-Backup.bat and replace the three <---Enter UNC path here---> with the UNC-
path to an existing directory on your secondary server where you want to put backup-file that will be
used to synchronize the DHCP servers, eg:
echo "exporting configuration" > “\\ Server2\c$\program files\dhcp-redundancy\Exporting.txt”
netsh dhcp server export “\\ Server2\c$\program files\dhcp-redundancy\DHCP-Backup.txt” all
del “\\ Server2\c$\program files\dhcp-redundancy\Exporting.txt”
7. On your main server create a scheduled task that should execute DHCP-Backup.bat. It can be run
as often as you like. The DHCP export takes 5-10 seconds, and keep in mind that the main DHCP
service will not respond to DHCP request during the export. The user account that shall run the task
must have rights to write a file in the directory on the second server that you entered in DHCP-
Backup.bat at step 6.
8. Right-click on the task and choose Run, it should now have created the file DHCP-Backup.txt in th