| 8159 | Keyed IPv6 TunnelM. Konstantynowicz, Ed., G. Heron, Ed., R. Schatzmayr, W. Henderickx | Proposed Standard | May 2017 |
| 7886 | Advertising Seamless Bidirectional Forwarding Detection (S-BFD) Discriminators in the Layer Two Tunneling Protocol Version 3 (L2TPv3)V. Govindan, C. Pignataro | Proposed Standard | July 2016 |
| 5641 | Layer 2 Tunneling Protocol Version 3 (L2TPv3) Extended Circuit Status ValuesN. McGill, C. Pignataro | Proposed Standard | August 2009 |
| 5611 | Layer Two Tunneling Protocol version 3 - Setup of Time-Division Multiplexing (TDM) PseudowiresA. Vainshtein, S. Galtzur | Proposed Standard | August 2009 |
| 4951 | Fail Over Extensions for Layer 2 Tunneling Protocol (L2TP) "failover"V. Jain, Ed. | Proposed Standard | August 2007 |
| 4719 | Transport of Ethernet Frames over Layer 2 Tunneling Protocol Version 3 (L2TPv3)R. Aggarwal, Ed., M. Townsley, Ed., M. Dos Santos, Ed. | Proposed Standard | November 2006 |
| 4667 | Layer 2 Virtual Private Network (L2VPN) Extensions for Layer 2 Tunneling Protocol (L2TP)W. Luo | Proposed Standard | September 2006 |
| 4591 | Frame Relay over Layer 2 Tunneling Protocol Version 3 (L2TPv3)M. Townsley, G. Wilkie, S. Booth, S. Bryant, J. Lau | Proposed Standard | August 2006 |
| 4454 | Asynchronous Transfer Mode (ATM) over Layer 2 Tunneling Protocol Version 3 (L2TPv3)S. Singh, M. Townsley, C. Pignataro | Proposed Standard | May 2006 |
| 4349 | High-Level Data Link Control (HDLC) Frames over Layer 2 Tunneling Protocol, Version 3 (L2TPv3)C. Pignataro, M. Townsley | Proposed Standard | February 2006 |
| 4045 | Extensions to Support Efficient Carrying of Multicast Traffic in Layer-2 Tunneling Protocol (L2TP)G. Bourdon | Experimental | April 2005 |
| 3931 | Layer Two Tunneling Protocol - Version 3 (L2TPv3)J. Lau, Ed., M. Townsley, Ed., I. Goyret, Ed. | Proposed Standard | March 2005 |
| 3817 | Layer 2 Tunneling Protocol (L2TP) Active Discovery Relay for PPP over Ethernet (PPPoE)W. Townsley, R. da Silva | Informational | June 2004 |
| 3573 | Signalling of Modem-On-Hold status in Layer 2 Tunneling Protocol (L2TP)I. Goyret | Proposed Standard | July 2003 |
| 3438 | Layer Two Tunneling Protocol (L2TP) Internet Assigned Numbers Authority (IANA) Considerations UpdateW. Townsley | Best Current Practice | December 2002 |
| 3437 | Layer-Two Tunneling Protocol Extensions for PPP Link Control Protocol NegotiationW. Palter, W. Townsley | Proposed Standard | January 2003 |
| 3371 | Layer Two Tunneling Protocol "L2TP" Management Information BaseE. Caves, P. Calhoun, R. Wheeler | Proposed Standard | September 2002 |
| 3355 | Layer Two Tunnelling Protocol (L2TP) Over ATM Adaptation Layer 5 (AAL5)A. Singh, R. Turner, R. Tio, S. Nanji | Proposed Standard | September 2002 |
| 3308 | Layer Two Tunneling Protocol (L2TP) Differentiated Services ExtensionP. Calhoun, W. Luo, D. McPherson, K. Peirce | Proposed Standard | November 2002 |
| 3301 | Layer Two Tunnelling Protocol (L2TP): ATM access network extensionsY. T'Joens, P. Crivellari, B. Sales | Proposed Standard | June 2002 |
| 3193 | Securing L2TP using IPsecB. Patel, B. Aboba, W. Dixon, G. Zorn, S. Booth | Proposed Standard | November 2001 |
| 3145 | L2TP Disconnect Cause InformationR. Verma, M. Verma, J. Carlson | Proposed Standard | July 2001 |
| 3070 | Layer Two Tunneling Protocol (L2TP) over Frame RelayV. Rawat, R. Tio, S. Nanji, R. Verma | Proposed Standard | February 2001 |