IETF RFC 3301
Layer Two Tunnelling Protocol (L2TP): ATM access network extensions
|Publication Date:||1 June 2002|
This document augments the procedures described in RFC 2661 to further support ATM SVC (Switched Virtual Circuits) or PVC (Permanent Virtual Circuits) based access networks. L2TP (Layer 2 Tunneling Protocol) specifies a protocol for tunnelling PPP packets over packet based networks and over IP networks in particular. L2TP supports remote access by ISDN and PSTN networks. The extensions defined within this document allow for asymmetric bi-directional call establishment and service selection in the ATM access network.