Windows DHCP import/export


Export:

On the Windows 2003 DHCP server, navigate to a command prompt

Type the following Command: netsh

Type the following Command: DHCP

Type the following Command: server \\Name or IP Address

Type the following Command: export c:\DHCPdb all


Import:

Type the following Command: netsh

Type the following Command: DHCP

Type the following Command: server \\Name or IP Address

Type the following Command: import c:\DHCPdb

Close the command prompt when completed.

Return to DHCP located in the Server Manager dashboard.

Right click the designated DHCP server in the services pane, then select Restart.

Once the DHCP install has been completed, select DHCP located in the Server Manager dashboard

Right click the designated DHCP server in the services pane, then select Stop.

Delete the DHCP.mdb file under c:\windows\system32\DHCP folder.

Return to DHCP located in the Server Manager dashboard

Right click the designated DHCP server in the services pane, then select Start.


source:  https://docs.microsoft.com/en-us/archive/blogs/canitpro/step-by-step-migration-of-dhcp-from-windows-server-2003-to-windows-server-2012

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