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unnumbered-address
- Related Topics
- Configuring an Unnumbered Interface
- JUNOS System Basics Configuration Guide
unnumbered-address
Syntax
unnumbered-address
interface-name
preferred-source-address
address;
Hierarchy Level
[edit dynamic-profiles
profile-name
interfaces
interface-name
unit
logical-unit-number
family
family],
[edit dynamic-profiles
profile-name
interfaces
demux0
unit
logical-unit-number
family
family]
Release Information
Statement introduced in JUNOS Release 8.2.
preferred-source-address option introduced in JUNOS Release 9.0.
The [edit dynamic-profiles profile-name interfaces interface-name unit logical-unit-number family family] hierarchy added in JUNOS Release 9.2.
Support for the $junos-loopback-interface predefined variable added in JUNOS Release 9.6.
Description
For Ethernet interfaces, enable the local address to be derived from the specified interface. Configuring unnumbered Ethernet interfaces enables IP processing on the interface without assigning an explicit IP address to the interface. To configure unnumbered address dynamically, include the $junos-loopback-interface-address predefined variable.
You can configure unnumbered address support on Ethernet interfaces for IPv4 and IPv6 address families.
Options
interface-name —Name of the interface from which the local address is derived. Use the $junos-loopback-interface dynamic variable to dynamically apply a loopback interface. The loopback interface used is based on the routing instance of the subscriber. The specified interface must have a logical unit number and a configured IP address, and must not be an unnumbered interface.
The preferred-source-address statement is explained separately.
Required Privilege Level
interface—To view this statement in the configuration.
interface-control—To add this statement to the configuration.
