3. Protocol description
The L2TP protocol enables PPP sessions to be transported through a tunnel over Layer 2 (ATM/Frame Relay) or Layer 3 (IP) links.
For a PPP session to be transported to an LNS, one of the two ends (e.g. the LAC) must request the creation of a tunnel. The other end (the LNS) then sends confirmation of the tunnel creation. The LAC responds by also sending a tunnel creation confirmation. The control connection is thus initiated on the tunnel. An L2TP session is then established by sending similar control messages (request, 1 re confirmation, 2 nde confirmation) on the control channel. Data can then be sent via the L2TP tunnel. The protocol regularly sends control messages, which must be acknowledged to ensure correct communication through...
The Ultimate Scientific and Technical Reference
This article is included in
Networks and Telecommunications
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Protocol description
Signage
References
The Ultimate Scientific and Technical Reference
