Service Manual

ip unnumbered
Configure a tunnel interface to operate without a unique explicit IPv4 address and select the interface from which the tunnel will borrow
its address.
Syntax ip unnumbered {interface-type interface-number}
Use the no ip unnumbered command to set the tunnel back to default logical address. If the tunnel was previously
operational, this will make the tunnel interface operationally down, unless the tunnel also has an IPv6 address
configured..
Parameters
interface-type
interface-number
Enter the interface type, followed by a slot number.
Defaults None
Command Modes INTERFACE TUNNEL
Command History
Version Description
9.4(0.0) Introduced on the MXL.
Usage Information
The ip unnumbered command will fail in two condition:
• If the logical ip address is configured.
• If the tunnel mode is ipv6ip (where ip address over tunnel interface is not possible).
To ping the unnumbered tunnels the logical address route information should be present in both the ends.
NOTE: The ip unnumbered command can specify an interface name that does not yet exist, or does not
yet have a configured IPv6 address. The tunnel interface is not changed to the operationally up state
until logically ip address is identified from the one of the address family.
ipv6 unnumbered
Configure a tunnel interface to operate without a unique explicit IPv6 address and select the interface from which the tunnel will borrow
its address.
Syntax
ipv6 unnumbered {interface-type interface-number}
Use the no ipv6 unnumbered command to set the tunnel back to default logical address. If the tunnel was
previously operational, this will make the tunnel interface operationally down, unless the tunnel also has an IPv4
address configured.
Parameters
interface-type
interface-number
Enter the interface type, followed by the type, slot and port information.
Defaults None.
Command Modes INTERFACE TUNNEL
Command History
Version Description
Tunneling 1231