interface l2tp

This command creates a Layer-2 Tunneling Protocol (L2TP) interface.

Syntax

interface l2tp <Interface ID>
(conf-if-L2TP <ID>)# backup|desc|firewall|ip|ipv6|mtu|napt|network|ppp|tunnel

Command	Description
Interface ID	Defines the L2TP Interface ID in the range of 0-99.
ip unumbered {Interface Type and ID}	Defines L2TP Unnumbered IP configuration, allowing the L2TP interface to borrow an IP address from another local interface (usually a Loopback). This is used instead of obtaining the IP address from a PPP server.
tunnel destination	Defines the IP address of the PPP tunneling peer.
ppp {user} {pass}	Defines the PPP server username and password from where the L2TP interface obtains its IP address.

Default

NA

Command Mode

Privileged User

Example

■

This example creates an L2TP interface.

(config-data)# interface l2tp 0
(conf-if-L2TP 0)#

■

This example obtains an IP address for the L2TP interface from a PPP sever.

(config-data)# interface l2tp 0
(conf-if-L2TP 0)# ppp user site1 pass 1234
(conf-if-L2TP 0)# tunnel destination 10.56.7.8
(conf-if-L2TP 0)# no shutdown
(conf-if-L2TP 0)# exit

■

This example defines Unumbered IP for the L2TP interface by borrowing the IP address from the Loopback interface.

(config-data)# interface l2tp 0
(conf-if-L2TP 0)# ip unnumbered Loopback 1