Ip Unnumbered Command (Loopback Interface Configuration) - ADTRAN 5000 Series Command Reference Manual

Command Reference Guide
ip unnumbered <interface>
Use the ip unnumbered command to use the IP address assigned to the specified interface for all IP
processing on the active interface. Use the no form of this command to remove the unnumbered
configuration.
Syntax Description
<interface>
Default Values
By default, all interfaces are configured to use a specified IP address (using the ip address command).
Applicable Platforms
This command applies to the NetVanta 300, 1000, 1000R, 2000, 3000, 4000, and 5000 and
Total Access 900 Series units.
Command History
Release 1.1
Release 11.1
Functional Notes
If ip unnumbered is enabled on an interface, all IP traffic from the interface will use a source IP address
taken from the specified interface. For example, specifying ip unnumbered ppp 1 while in the Ethernet
Interface Configuration mode configures the Ethernet interface to use the IP address assigned to the PPP
interface for all IP processing. In addition, the AOS uses the specified interface information when sending
route updates over the unnumbered interface.
Usage Examples
The following example configures the loopback interface (labeled loop 1) to use the IP address assigned
to the PPP interface (ppp 1):
(config)#interface loopback 1
(config-loop 1)#ip unnumbered ppp 1
61200990L1-35E
Specifies the interface in the format type slot/port (e.g., ppp 1) that contains the
IP address to be used as the source address for all packets transmitted on this
interface. Enter ip unnumbered ? for a complete list of valid interfaces.
Command was introduced.
Command was expanded to include demand interfaces.
Copyright © 2005 ADTRAN
Loopback Interface Configuration Command Set
879