| 1321 | The MD5 Message-Digest AlgorithmR. Rivest | Informational | April 1992 |
| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2205 | Resource ReSerVation Protocol (RSVP) -- Version 1 Functional SpecificationR. Braden, Ed., L. Zhang, S. Berson, S. Herzog, S. Jamin | Proposed Standard | September 1997 |
| 2385 | Protection of BGP Sessions via the TCP MD5 Signature OptionA. Heffernan · obsoleted by RFC 5925 | Proposed Standard | August 1998 |
| 3209 | RSVP-TE: Extensions to RSVP for LSP TunnelsD. Awduche, L. Berger, D. Gan, T. Li, V. Srinivasan, G. Swallow | Proposed Standard | December 2001 |
| 3471 | Generalized Multi-Protocol Label Switching (GMPLS) Signaling Functional DescriptionL. Berger, Ed. | Proposed Standard | February 2003 |
| 3473 | Generalized Multi-Protocol Label Switching (GMPLS) Signaling Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) ExtensionsL. Berger, Ed. | Proposed Standard | February 2003 |
| 3477 | Signalling Unnumbered Links in Resource ReSerVation Protocol - Traffic Engineering (RSVP-TE)K. Kompella, Y. Rekhter | Proposed Standard | February 2003 |
| 3562 | Key Management Considerations for the TCP MD5 Signature OptionM. Leech | Informational | July 2003 |
| 3785 | Use of Interior Gateway Protocol (IGP) Metric as a second MPLS Traffic Engineering (TE) MetricF. Le Faucheur, R. Uppili, A. Vedrenne, P. Merckx, T. Telkamp | Best Current Practice | May 2004 |
| 4022 | Management Information Base for the Transmission Control Protocol (TCP)R. Raghunarayan, Ed. | Proposed Standard | March 2005 |
| 4090 | Fast Reroute Extensions to RSVP-TE for LSP TunnelsP. Pan, Ed., G. Swallow, Ed., A. Atlas, Ed. | Proposed Standard | May 2005 |
| 4101 | Writing Protocol ModelsE. Rescorla, IAB | Informational | June 2005 |
| 4107 | Guidelines for Cryptographic Key ManagementS. Bellovin, R. Housley | Best Current Practice | June 2005 |
| 4120 | The Kerberos Network Authentication Service (V5)C. Neuman, T. Yu, S. Hartman, K. Raeburn | Proposed Standard | July 2005 |
| 4278 | Standards Maturity Variance Regarding the TCP MD5 Signature Option (RFC 2385) and the BGP-4 SpecificationS. Bellovin, A. Zinin | Informational | January 2006 |
| 4303 | IP Encapsulating Security Payload (ESP)S. Kent | Proposed Standard | December 2005 |
| 4306 | Internet Key Exchange (IKEv2) ProtocolC. Kaufman, Ed. · obsoleted by RFC 5996 | Proposed Standard | December 2005 |
| 4655 | A Path Computation Element (PCE)-Based ArchitectureA. Farrel, J.-P. Vasseur, J. Ash | Informational | August 2006 |
| 4657 | Path Computation Element (PCE) Communication Protocol Generic RequirementsJ. Ash, Ed., J.L. Le Roux, Ed. | Informational | September 2006 |
| 4674 | Requirements for Path Computation Element (PCE) DiscoveryJ.L. Le Roux, Ed. | Informational | October 2006 |
| 4927 | Path Computation Element Communication Protocol (PCECP) Specific Requirements for Inter-Area MPLS and GMPLS Traffic EngineeringJ.-L. Le Roux, Ed. | Informational | June 2007 |
| 5036 | LDP SpecificationL. Andersson, Ed., I. Minei, Ed., B. Thomas, Ed. | Draft Standard | October 2007 |
| 5088 | OSPF Protocol Extensions for Path Computation Element (PCE) DiscoveryJL. Le Roux, Ed., JP. Vasseur, Ed., Y. Ikejiri, R. Zhang | Proposed Standard | January 2008 |
| 5089 | IS-IS Protocol Extensions for Path Computation Element (PCE) DiscoveryJL. Le Roux, Ed., JP. Vasseur, Ed., Y. Ikejiri, R. Zhang | Proposed Standard | January 2008 |
| 5226 | Guidelines for Writing an IANA Considerations Section in RFCsT. Narten, H. Alvestrand · obsoleted by RFC 8126 | Best Current Practice | May 2008 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 2008 |
| 5376 | Inter-AS Requirements for the Path Computation Element Communication Protocol (PCECP)N. Bitar, R. Zhang, K. Kumaki | Informational | November 2008 |
| 5420 | Encoding of Attributes for MPLS LSP Establishment Using Resource Reservation Protocol Traffic Engineering (RSVP-TE)A. Farrel, Ed., D. Papadimitriou, JP. Vasseur, A. Ayyangar | Proposed Standard | February 2009 |