set l3-interface loopback address

The set l3-interface loopback address command creates a loopback interface and configures its IP address.

Command Syntax

set l3-interface loopback <loopback-name> address <ip-address> prefix-length <int>

Parameters

Parameter	Description
loopback <loopback-name>	Specifies a loopback interface. The value is a string.
address <ip-address>	Specifies the IP address of a loopback interface. Ipv4 default value: 127.0.0.1 Ipv6 default value: ::1
prefix-length <int>	The IPv4 network prefix length is fixed to 32. The IPv6 network prefix length is fixed to 128.

Usage Guidelines

A loopback interface is always Up.

The IP address of a loopback interface is usually specified as the source address of packets.

After a loopback interface is created, you can use command set l3-interface loopback vrf to bind the loopback interface to a VRF. Users can configure multiple loopback interfaces per VRF. A loopback interface is in the default VRF by default.

You can also use command set l3-interface loopback disable to disable a loopback interface. When a loopback interface is created, it is enabled by default.

Note that lo is a built-in loopback interface in default VRF, it cannot be bound to any other user-defined VRF, or be disabled.

Example

Create a loopback interface lo-gre in the default VRF.

admin@Xorplus# set l3-interface loopback lo-gre address 1.1.1.1 prefix-length 32
admin@Xorplus# commit