Configuring the Logical Interface Identifier

You can configure L2TP services on adaptive services interfaces on M7i, M10i, and M120 routers only. You must configure the logical interface to be dedicated or shared. If a logical interface is dedicated, it can represent only one session at a time. A shared logical interface can have multiple sessions.

To configure the logical interface, include the l2tp-interface-id statement at the [edit interfaces interface-name unit logical-unit-number dial-options] hierarchy level:

The l2tp-interface-id name configured on the logical interface must be replicated at the [edit access profile name] hierarchy level:

• For a user-specific identifier, include the l2tp-interface-id statement at the [edit access profile name ppp] hierarchy level.
• For a group identifier, include the l2tp-interface-id statement at the [edit access profile name l2tp] hierarchy level.

You can configure multiple logical interfaces with the same interface identifier, to be used as a pool for several users. For more information on configuring access profiles, see the JUNOS System Basics Configuration Guide.

Note: If you delete the dial-options statement settings configured on a logical interface, all L2TP sessions running on that interface are terminated.