Enabling Tunnel Switching On The Router; Configuring L2Tp Tunnel Switch Profiles - Juniper JUNOSE SOFTWARE 11.2.X - BROADBAND ACCESS CONFIGURATION GUIDE 7-20-2010 Configuration Manual

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Ensure that L2TP tunnel switching is enabled on the router.
1.
Configure the L2TP tunnel switch profile.
2.
Apply the L2TP tunnel switch profile to the tunnel in one of the following ways:
3.
To apply a named tunnel switch profile through an AAA domain map, use the
switch-profile command from Domain Map Tunnel Configuration mode. For
details, see "Applying L2TP Tunnel Switch Profiles by Using AAA Domain Maps"
on page 388 .
To apply a named tunnel switch profile through an AAA tunnel group, use the
switch-profile command from Tunnel Group Tunnel Configuration mode. For
details, see "Applying L2TP Tunnel Switch Profiles by Using AAA Tunnel Groups"
on page 389 .
To apply a named tunnel switch profile through RADIUS, include the
Tunnel-Switch-Profile RADIUS attribute (VSA 26-91) in RADIUS Access-Accept
messages. For details, see "Applying L2TP Tunnel Switch Profiles by Using RADIUS"
on page 390 .
To apply a default tunnel switch profile to a virtual router, use the aaa tunnel
switch-profile command from Global Configuration mode. For details, see
"Applying Default L2TP Tunnel Switch Profiles" on page 389 .
The following sections describe how to perform each of these tasks.

Enabling Tunnel Switching on the Router

To enable L2TP tunnel switching on the router, use the l2tp tunnel-switching command.
By default, tunnel switching is disabled.
To enable L2TP tunnel switching:
host1(config)#l2tp tunnel-switching
For more information, see "Enabling Tunnel Switching" on page 376.

Configuring L2TP Tunnel Switch Profiles

To configure an L2TP tunnel switch profile:
Create the L2TP tunnel switch profile and assign it a name. The l2tp switch-profile
1.
command accesses L2TP Tunnel Switch Profile Configuration mode.
host1(config)#l2tp switch-profile concord
host1(config-l2tp-tunnel-switch-profile)#
Configure the L2TP tunnel switching behavior for the interfaces to which this profile
2.
is assigned. Use the avp command with the relay keyword to cause the router to
preserve the value of an incoming AVP of this type when packets are switched
between an inbound LNS session and an outbound LAC session.
You can use any of the following keywords to specify the AVPs for the router to relay:
bearer-type—L2TP Bearer Type AVP 18; by default, the router regenerates this
AVP at the outbound LAC session, based on the local policy in effect
Chapter 13: Configuring an L2TP LNS
387