I-D ACTION:draft-dasilva-l2tp-relaysvc-05.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Layer Two Tunneling Protocol Extensions Working Group of the IETF.

	Title		: L2TP Active Discovery Relay for PPPoE
	Author(s)	: W. Townsley, R. da Silva
	Filename	: draft-dasilva-l2tp-relaysvc-05.txt
	Pages		: 16
	Date		: 2003-2-13
	

The Point-to-Point Protocol (PPP) [1] provides a standard method for transporting multi-protocol datagrams over point-to-point links. Layer Two Tunneling Protocol (L2TP) [2], facilitates the tunneling of PPP packets across an intervening packet-switched network. And yet a third protocol, PPP over Ethernet (PPPoE) [3] describes how to build PPP sessions and to encapsulate PPP packets over Ethernet. L2TP Active Discovery Relay for PPPoE describes a method to relay Active Discovery and Service Selection functionality from PPPoE over the reliable control channel within L2TP. Two new L2TP control message types and associated PPPoE-specific Attribute Value Pairs (AVPs) for L2TP are defined. This relay mechanism provides enhanced integration of a specific feature in the PPPoE tunneling protocol with L2TP.

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