Creating a Loopback Interface and Configuring an IP Address for It

IP addresses need to be configured for loopback interfaces that are always up so that these interfaces can be used to communicate with other devices.

Run system-view
The system view is displayed.
Run interface loopback loopback-number
A loopback interface is created.

You can create or delete loopback interfaces as required. Once a loopback interface is created, it remains up all the time unless it monitors an interface monitoring group and may go down.
Run ip address ip-address { mask | mask-length }
The IP address of the loopback interface is configured.
Run commit
The configuration is committed.