| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2434 | Guidelines for Writing an IANA Considerations Section in RFCsT. Narten, H. Alvestrand · obsoleted by RFC 5226 | Best Current Practice | October 1998 |
| 3032 | MPLS Label Stack EncodingE. Rosen, D. Tappan, G. Fedorkow, Y. Rekhter, D. Farinacci, T. Li, A. Conta | Proposed Standard | January 2001 |
| 3036 | LDP SpecificationL. Andersson, P. Doolan, N. Feldman, A. Fredette, B. Thomas · obsoleted by RFC 5036 | Proposed Standard | January 2001 |
| 4385 | Pseudowire Emulation Edge-to-Edge (PWE3) Control Word for Use over an MPLS PSNS. Bryant, G. Swallow, L. Martini, D. McPherson | Proposed Standard | February 2006 |
| 4447 | Pseudowire Setup and Maintenance Using the Label Distribution Protocol (LDP)L. Martini, Ed., E. Rosen, N. El-Aawar, T. Smith, G. Heron · obsoleted by RFC 8077 | Proposed Standard | April 2006 |
| 4448 | Encapsulation Methods for Transport of Ethernet over MPLS NetworksL. Martini, Ed., E. Rosen, N. El-Aawar, G. Heron | Proposed Standard | April 2006 |
| 4553 | Structure-Agnostic Time Division Multiplexing (TDM) over Packet (SAToP)A. Vainshtein, Ed., YJ. Stein, Ed. | Proposed Standard | June 2006 |
| 4618 | Encapsulation Methods for Transport of PPP/High-Level Data Link Control (HDLC) over MPLS NetworksL. Martini, E. Rosen, G. Heron, A. Malis | Proposed Standard | September 2006 |
| 4619 | Encapsulation Methods for Transport of Frame Relay over Multiprotocol Label Switching (MPLS) NetworksL. Martini, Ed., C. Kawa, Ed., A. Malis, Ed. | Proposed Standard | September 2006 |
| 4717 | Encapsulation Methods for Transport of Asynchronous Transfer Mode (ATM) over MPLS NetworksL. Martini, J. Jayakumar, M. Bocci, N. El-Aawar, J. Brayley, G. Koleyni | Proposed Standard | December 2006 |
| 4842 | Synchronous Optical Network/Synchronous Digital Hierarchy (SONET/SDH) Circuit Emulation over Packet (CEP)A. Malis, P. Pate, R. Cohen, Ed., D. Zelig | Proposed Standard | April 2007 |
| 4905 | Encapsulation Methods for Transport of Layer 2 Frames over MPLS NetworksL. Martini, Ed., E. Rosen, Ed., N. El-Aawar, Ed. | Historic | June 2007 |