> - pre-authenticate

> # pre-authenticate

> #### Syntax

> [ no ] pre-authenticate

> #### Release Information

> Command introduced in JUNOSe Release 8.1.0.

> #### Description

> Configures an AAA profile to support RADIUS preauthentication. During the preauthentication process, the router sends an Access-Request message to a RADIUS preauthentication server to obtain an AAA logical line identifier (LLID) for each subscriber. In response, the preauthentication server returns the LLID in the RADIUS Calling-Station-Id [31] attribute of an Access-Accept message. The no version removes preauthentication support from the AAA profile.

> #### Mode

> AAA Profile Configuration

> #### Updated: 2009-04-17

> Copyright © 2009, Juniper Networks, Inc. All rights reserved. Trademark Notice.