Back up DHCP commands and use the system command netsh. There are three methods: 1. backup. restore Command Format: netsh dhcp server \ dc1 backup c: \ dhcp-dc-bak c: \ dhcp-dc-bak is a folder. This command backs up several files in the dhcp directory of the system. This command can be executed remotely, but the backup files may be on the server, if no network path is specified. 2. export and import are similar to the previous command, but only one file command format is backed up: netsh dhcp server \ dc1 export c: \ dhcp-dc-bak c: \ dhcp-dc-bak is a file. The file format is unclear. This command can be executed remotely, but the backup file may be on the server, if the network path is not specified. 3, dump, exec command format: netsh dhcp server \ dc1 dump c: \ dhcp-dc-bak.txt this command is good, the backup results are plain text, you can edit, and then restore back. Recovery command: netsh dhcp exec c: \ dhcp-dc-bak.txt