
Frame Relay Sub-Interface Config Command Set Command Reference Guide
458 © 2003 ADTRAN, Inc. 61950860L1-35D
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>
Specifies the interface (in the format
type slot/port
) that contains the IP address
to use as the source address for all packets transmitted on this interface.
Valid interfaces include: Ethernet (eth 0/1), virtual frame relay sub-interfaces (fr
1.16), virtual PPP (ppp 1), and loopback interfaces.
Default Values
By default, all interfaces are configured to use a specified IP address (using the ip address command).
Command Modes
(config-interface)# Interface Configuration Mode required
Valid interfaces include: Ethernet (eth 0/1), virtual frame relay sub-interfaces (fr
1.16), and virtual PPP interfaces (ppp 1).
Command History
Release 1.1 Command was introduced
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 eth 0/1
while in the Frame Relay
Sub-Interface Configuration Mode configures the frame relay sub-interface to use the IP address assigned to
the Ethernet interface for all IP processing. In addition, the ADTRAN OS uses the specified interface
information when sending route updates over the unnumbered interface.
Usage Examples
The following example configures the frame relay interface (labeled
frame-relay 1.16
) to use the IP address
assigned to the Ethernet interface (
eth 0/1
):
(config)#
interface frame-relay 1.16
(config-fr 1.16)#
ip unnumbered eth 0/1
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