RFC 3931:Layer Two Tunneling Protocol - Version 3 ...
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Tunneling


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... The Layer Two Tunneling Protocol (L2TP) provides a dynamic mechanism for tunneling ...
... Layer Two Tunneling Protocol (L2TP) provides a dynamic mechanism for tunneling Layer 2 (L2) "circuits" across a packet-oriented data network ...
... 2661prop, is a standard method for tunneling Point-to-Point Protocol (PPP) ...
... RFC1661] sessions. L2TP has since been adopted for tunneling a number of other L2 protocols. In order to provide greater modularity, this document describes the base L2TP ...


... L2TP Control Connection Endpoints (LCCEs), tunneling traffic across a packet network. There are three ...
... traffic across a packet network. There are three predominant tunneling models in which L2TP operates: LAC-LNS (or vice ...
... Note: In L2TPv2, user-driven tunneling of this type is often referred to as "voluntary tunneling" [RFC2809 ...
... L2TPv2, user-driven tunneling of this type is often referred to as "voluntary tunneling" [RFC2809]. Further, an LNS acting as ...


... sessions. The data message format for tunneling data packets may be utilized with or without the L2TP control channel ...
... PSN. The necessary setup for tunneling a session with L2TP consists of two ...
... header and the start of the tunneled frame. It contains control fields that are used to facilitate the tunneling of each frame (e.g., sequence numbers or flags). The Default L2-Specific ...


... L2TPv3 over UDP must consider other L2 tunneling protocols that may be operating in the same environment, including L2TPv2 [RFC2661 ...
... transport security, IPsec defines a mode of operation that allows tunneling of IP packets. The packet-level encryption ...
... IP address, ports, etc. In the L2TP tunneling model, analogous filtering may be performed at the network ...
... the available path MTU towards its L2TP peer, the Generic Packet Tunneling specification [RFC2473], Section 7.1 SHOULD be followed. In this case, the LCCE ...


... Conta, A. and S. Deering, "Generic Packet Tunneling in IPv6 Specification", RFC 2473prop, December 1998. ...
... Townsley, W., Valencia, A., Rubens, A., Pall, G., Zorn, G., and Palter, B., "Layer Two Tunneling Layer Two Tunneling Protocol (L2TP)", RFC 2661prop ...
... Townsley, W., Valencia, A., Rubens, A., Pall, G., Zorn, G., and Palter, B., "Layer Two Tunneling Layer Two Tunneling Protocol (L2TP)", RFC 2661prop, August 1999. ...
... Townsley, W., "Layer Two Tunneling Protocol (L2TP) Internet Assigned Numbers Authority (IANA ...
... Hamzeh, K., Pall, G., Verthein, W., Taarud, J., Little, W., and Zorn, G., "Point-to-Point Tunneling Protocol (PPTP)", RFC 2637, July 1999. ...
... Aboba, B. and Zorn, G., "Implementation of L2TP Compulsory Tunneling via RADIUS", RFC 2809, April 2000. ...
... Rawat, V., Tio, R., Nanji, S., and Verma, R., "Layer Two Tunneling Protocol (L2TP) over Frame Relay", RFC 3070prop ...


... Service Type" version, which defined the use of L2TP for tunneling of various L2 payload types (initially, Ethernet ...


... may never reach its destination. It may be worth noting here that this condition is true for any tunneling mechanism of IP packets that includes sequence number ...



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