ADTRAN 1000R Series

Command Reference Guide Loopback Interface Configuration Command Set

ip address <address> <mask> secondary

Use the ip address command to define an IP address on the specified interface. Use the optional

secondary keyword to define a secondary IP address. Use the no form of this command to remove a

configured IP address.

Syntax Description

<address> Defines the IP address for the interface in dotted decimal notation (for example:

192.22.73.101).

<mask> Specifies the subnet mask that corresponds to the listed IP address.

secondary

Optional. Configures a secondary IP address for the specified interface.

Default Values

By default, there are no assigned IP addresses.

Applicable Platforms

This command applies to the NetVanta 300, 1000, 1000R, 2000, 3000, 4000, and 5000 and

Total Access 9 00 Series units.

Command History

Release 1.1 Command was introduced.

Release 2.1 Added ip address dhcp for DHCP client support.

Functional Notes

Use secondary IP addresses to allow dual subnets on a single interface (when you need more IP

addresses than the pri mary subne t can provid e). When using se condary IP addresses, avoid routing loop s

by verifying that all de vice s on the net w ork seg m ent are configured with secondary IP addresses on the

secondary subnet.

Usage Examples

The following example configures a secondary IP address of 192.22.72.101/30:

(config)#interface loopback 1

(config-loop 1)#ip address 192.22.72.101 255.255.255.252 secondary