# L2TP References

For more information about L2TP, see the following resources:

- RFC 2661—Layer Two Tunneling Protocol “ L2TP” (August 1999)
- RFC 3145—L2TP Disconnect Cause Information (July 2001)
- Fail Over extensions for L2TP “ failover” —draft-ietf-l2tpext-failover-06.txt (April 2006 expiration)
- RFC 4951—Fail Over Extensions for Layer 2 Tunneling Protocol (L2TP) "failover" (August 2007)

For information about L2TP high availability support, see the Managing High Availability chapter in JunosE System Basics Configuration Guide.

For information about setting up policy-based routing features for L2TP, such as rate limit profiles, classifier control lists, and policy lists, see the JunosE Policy Management Configuration Guide.

For information about creating and attaching QoS profiles to L2TP sessions, see the JunosE Quality of Service Configuration Guide.

For information about how to secure Layer 2 Tunneling Protocol (L2TP) tunnels with IP Security (IPSec) on your E Series router, see the Securing L2TP and IP Tunnels with IPSec chapter in JunosE IP Services Configuration Guide.