RFC 2661: Layer Two Tunneling Protocol "L2TP"

This document describes the Layer Two Tunneling Protocol (L2TP). [STANDARDS-TRACK]

Read RFC 2661 on the RFC Editor

Incoming relationships (30 related RFCs)

Updated by, Normatively referenced by — RFC 9601: Propagating Explicit Congestion Notification across IP Tunnel Headers Separated by a Shim
Normatively referenced by — RFC 3931: Layer Two Tunneling Protocol - Version 3 (L2TPv3)
Normatively referenced by — RFC 4111: Security Framework for Provider-Provisioned Virtual Private Networks (PPVPNs)
Normatively referenced by — RFC 6576: IP Performance Metrics (IPPM) Standard Advancement Testing
Normatively referenced by — RFC 4814: Hash and Stuffing: Overlooked Factors in Network Device Benchmarking
Normatively referenced by — RFC 4031: Service Requirements for Layer 3 Provider Provisioned Virtual Private Networks (PPVPNs)
Normatively referenced by — RFC 3437: Layer-Two Tunneling Protocol Extensions for PPP Link Control Protocol Negotiation
Normatively referenced by — RFC 4045: Extensions to Support Efficient Carrying of Multicast Traffic in Layer-2 Tunneling Protocol (L2TP)
Normatively referenced by — RFC 8350: Alternate Tunnel Encapsulation for Data Frames in Control and Provisioning of Wireless Access Points (CAPWAP)
Normatively referenced by — RFC 8772: The China Mobile, Huawei, and ZTE Broadband Network Gateway (BNG) Simple Control and User Plane Separation Protocol (S-CUSP)
Informatively referenced by — RFC 3748: Extensible Authentication Protocol (EAP)
Informatively referenced by — RFC 4282: The Network Access Identifier
Informatively referenced by — RFC 6709: Design Considerations for Protocol Extensions
Informatively referenced by — RFC 4005: Diameter Network Access Server Application
Informatively referenced by — RFC 6169: Security Concerns with IP Tunneling
Informatively referenced by — RFC 5216: The EAP-TLS Authentication Protocol
Informatively referenced by — RFC 4110: A Framework for Layer 3 Provider-Provisioned Virtual Private Networks (PPVPNs)
Informatively referenced by — RFC 4782: Quick-Start for TCP and IP
Informatively referenced by — RFC 2764: A Framework for IP Based Virtual Private Networks
Informatively referenced by — RFC 2867: RADIUS Accounting Modifications for Tunnel Protocol Support
Informatively referenced by — RFC 4087: IP Tunnel MIB
Informatively referenced by — RFC 6077: Open Research Issues in Internet Congestion Control
Informatively referenced by — RFC 3193: Securing L2TP using IPsec
Informatively referenced by — RFC 4667: Layer 2 Virtual Private Network (L2VPN) Extensions for Layer 2 Tunneling Protocol (L2TP)
Informatively referenced by — RFC 9599: Guidelines for Adding Congestion Notification to Protocols that Encapsulate IP
Informatively referenced by — RFC 3153: PPP Multiplexing
Informatively referenced by — RFC 9956: A Non-Queue-Building Per-Hop Behavior (NQB PHB) for Differentiated Services
Informatively referenced by — RFC 2809: Implementation of L2TP Compulsory Tunneling via RADIUS
Informatively referenced by — RFC 3070: Layer Two Tunneling Protocol (L2TP) over Frame Relay
Informatively referenced by — RFC 7105: Using Device-Provided Location-Related Measurements in Location Configuration Protocols