| RFC
| Description
| Author(s)
| Status
| Obsoleted by
| Updated by
|
| 5501
| Requirements for Multicast Support in Virtual Private LAN Services
| Y. Kamite, Ed., Y. Wada, Y. Serbest, T. Morin, L. Fang
| Informational
|
|
|
| 5502
| The SIP P-Served-User Private-Header (P-Header) for the 3GPP IP Multimedia (IM) Core Network (CN) Subsystem
| J. van Elburg
| Informational
|
|
RFC 8217, RFC 8498
|
| 5503
| Private Session Initiation Protocol (SIP) Proxy-to-Proxy Extensions for Supporting the PacketCable Distributed Call Signaling Architecture
| F. Andreasen, B. McKibben, B. Marshall
| Informational
|
|
|
| 5504
| Downgrading Mechanism for Email Address Internationalization
| K. Fujiwara, Ed., Y. Yoneya, Ed.
| Experimental
|
RFC 6530
|
|
| 5505
| Principles of Internet Host Configuration
| B. Aboba, D. Thaler, L. Andersson, S. Cheshire
| Informational
|
|
|
| 5506
| Support for Reduced-Size Real-Time Transport Control Protocol (RTCP): Opportunities and Consequences
| I. Johansson, M. Westerlund
| Proposed standard
|
|
|
| 5507
| Design Choices When Expanding the DNS
| IAB, P. Faltstrom, Ed., R. Austein, Ed., P. Koch, Ed.
| Informational
|
|
|
| 5508
| NAT Behavioral Requirements for ICMP
| P. Srisuresh, B. Ford, S. Sivakumar, S. Guha
| Best current practice
|
|
RFC 7857
|
| 5509
| Internet Assigned Numbers Authority (IANA) Registration of Instant Messaging and Presence DNS SRV RRs for the Session Initiation Protocol (SIP)
| S. Loreto
| Proposed standard
|
|
|
| 5510
| Reed-Solomon Forward Error Correction (FEC) Schemes
| J. Lacan, V. Roca, J. Peltotalo, S. Peltotalo
| Proposed standard
|
|
|
| 5511
| Routing Backus-Naur Form (RBNF): A Syntax Used to Form Encoding Rules in Various Routing Protocol Specifications
| A. Farrel
| Proposed standard
|
|
|
| 5512
| The BGP Encapsulation Subsequent Address Family Identifier (SAFI) and the BGP Tunnel Encapsulation Attribute
| P. Mohapatra, E. Rosen
| Proposed standard
|
RFC 9012
|
|
| 5513
| IANA Considerations for Three Letter Acronyms
| A. Farrel
| Informational
|
|
|
| 5514
| IPv6 over Social Networks
| E. Vyncke
| Experimental
|
|
|
| 5515
| Layer 2 Tunneling Protocol (L2TP) Access Line Information Attribute Value Pair (AVP) Extensions
| V. Mammoliti, C. Pignataro, P. Arberg, J. Gibbons, P. Howard
| Informational
|
|
|
| 5516
| Diameter Command Code Registration for the Third Generation Partnership Project (3GPP) Evolved Packet System (EPS)
| M. Jones, L. Morand
| Informational
|
|
|
| 5517
| Cisco Systems' Private VLANs: Scalable Security in a Multi-Client Environment
| S. HomChaudhuri, M. Foschiano
| Informational
|
|
|
| 5518
| Vouch By Reference
| P. Hoffman, J. Levine, A. Hathcock
| Proposed standard
|
|
RFC 8553
|
| 5519
| Multicast Group Membership Discovery MIB
| J. Chesterfield, B. Haberman, Ed.
| Proposed standard
|
|
|
| 5520
| Preserving Topology Confidentiality in Inter-Domain Path Computation Using a Path-Key-Based Mechanism
| R. Bradford, Ed., JP. Vasseur, A. Farrel
| Proposed standard
|
|
|
| 5521
| Extensions to the Path Computation Element Communication Protocol (PCEP) for Route Exclusions
| E. Oki, T. Takeda, A. Farrel
| Proposed standard
|
|
|
| 5522
| Network Mobility Route Optimization Requirements for Operational Use in Aeronautics and Space Exploration Mobile Networks
| W. Eddy, W. Ivancic, T. Davis
| Informational
|
|
|
| 5523
| OSPFv3-Based Layer 1 VPN Auto-Discovery
| L. Berger
| Experimental
|
|
|
| 5524
| Extended URLFETCH for Binary and Converted Parts
| D. Cridland
| Proposed standard
|
|
|
| 5525
| Reliable Server Pooling MIB Module Definition
| T. Dreibholz, J. Mulik
| Experimental
|
|
|
| 5526
| The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application for Infrastructure ENUM
| J. Livingood, P. Pfautz, R. Stastny
| Informational
|
|
|
| 5527
| Combined User and Infrastructure ENUM in the e164.arpa Tree
| M. Haberler, O. Lendl, R. Stastny
| Informational
|
|
|
| 5528
| Camellia Counter Mode and Camellia Counter with CBC-MAC Mode Algorithms
| A. Kato, M. Kanda, S. Kanno
| Informational
|
|
|
| 5529
| Modes of Operation for Camellia for Use with IPsec
| A. Kato, M. Kanda, S. Kanno
| Proposed standard
|
|
|
| 5530
| IMAP Response Codes
| A. Gulbrandsen
| Proposed standard
|
|
|
| 5531
| RPC: Remote Procedure Call Protocol Specification Version 2
| R. Thurlow
| Draft standard
|
|
RFC 9289
|
| 5532
| Network File System (NFS) Remote Direct Memory Access (RDMA) Problem Statement
| T. Talpey, C. Juszczak
| Informational
|
|
|
| 5533
| Shim6: Level 3 Multihoming Shim Protocol for IPv6
| E. Nordmark, M. Bagnulo
| Proposed standard
|
|
|
| 5534
| Failure Detection and Locator Pair Exploration Protocol for IPv6 Multihoming
| J. Arkko, I. van Beijnum
| Proposed standard
|
|
|
| 5535
| Hash-Based Addresses (HBA)
| M. Bagnulo
| Proposed standard
|
|
|
| 5536
| Netnews Article Format
| K. Murchison, Ed., C. Lindsey, D. Kohn
| Proposed standard
|
|
|
| 5537
| Netnews Architecture and Protocols
| R. Allbery, Ed., C. Lindsey
| Proposed standard
|
|
RFC 8315
|
| 5538
| The 'news' and 'nntp' URI Schemes
| F. Ellermann
| Proposed standard
|
|
|
| 5539
| NETCONF over Transport Layer Security (TLS)
| M. Badra
| Proposed standard
|
RFC 7589
|
|
| 5540
| 40 Years of RFCs
| RFC Editor
| Informational
|
|
RFC 8700
|
| 5541
| Encoding of Objective Functions in the Path Computation Element Communication Protocol (PCEP)
| JL. Le Roux, JP. Vasseur, Y. Lee
| Proposed standard
|
|
|
| 5542
| Definitions of Textual Conventions for Pseudowire (PW) Management
| T. Nadeau, Ed., D. Zelig, Ed., O. Nicklass, Ed.
| Proposed standard
|
|
|
| 5543
| BGP Traffic Engineering Attribute
| H. Ould-Brahim, D. Fedyk, Y. Rekhter
| Proposed standard
|
|
RFC 7606
|
| 5544
| Syntax for Binding Documents with Time-Stamps
| A. Santoni
| Informational
|
|
RFC 5955
|
| 5545
| Internet Calendaring and Scheduling Core Object Specification (iCalendar)
| B. Desruisseaux, Ed.
| Proposed standard
|
|
RFC 5546, RFC 6868, RFC 7529, RFC 7953, RFC 7986, RFC 9073, RFC 9074, RFC 9253
|
| 5546
| iCalendar Transport-Independent Interoperability Protocol (iTIP)
| C. Daboo, Ed.
| Proposed standard
|
|
RFC 6638
|
| 5547
| A Session Description Protocol (SDP) Offer/Answer Mechanism to Enable File Transfer
| M. Garcia-Martin, M. Isomaki, G. Camarillo, S. Loreto, P. Kyzivat
| Proposed standard
|
|
|
| 5548
| Routing Requirements for Urban Low-Power and Lossy Networks
| M. Dohler, Ed., T. Watteyne, Ed., T. Winter, Ed., D. Barthel, Ed.
| Informational
|
|
|
| 5549
| Advertising IPv4 Network Layer Reachability Information with an IPv6 Next Hop
| F. Le Faucheur, E. Rosen
| Proposed standard
|
RFC 8950
|
|
| 5550
| The Internet Email to Support Diverse Service Environments (Lemonade) Profile
| D. Cridland, Ed., A. Melnikov, Ed., S. Maes, Ed.
| Proposed standard
|
|
|
| 5551
| Lemonade Notifications Architecture
| R. Gellens, Ed.
| Informational
|
|
|
| 5552
| SIP Interface to VoiceXML Media Services
| D. Burke, M. Scott
| Proposed standard
|
|
|
| 5553
| Resource Reservation Protocol (RSVP) Extensions for Path Key Support
| A. Farrel, Ed., R. Bradford, JP. Vasseur
| Proposed standard
|
|
|
| 5554
| Clarifications and Extensions to the Generic Security Service Application Program Interface (GSS-API) for the Use of Channel Bindings
| N. Williams
| Proposed standard
|
|
|
| 5555
| Mobile IPv6 Support for Dual Stack Hosts and Routers
| H. Soliman, Ed.
| Proposed standard
|
|
RFC 8553
|
| 5556
| Transparent Interconnection of Lots of Links (TRILL): Problem and Applicability Statement
| J. Touch, R. Perlman
| Informational
|
|
|
| 5557
| Path Computation Element Communication Protocol (PCEP) Requirements and Protocol Extensions in Support of Global Concurrent Optimization
| Y. Lee, JL. Le Roux, D. King, E. Oki
| Proposed standard
|
|
|
| 5558
| Virtual Enterprise Traversal (VET)
| F. Templin, Ed.
| Informational
|
|
|
| 5559
| Pre-Congestion Notification (PCN) Architecture
| P. Eardley, Ed.
| Informational
|
|
|
| 5560
| A One-Way Packet Duplication Metric
| H. Uijterwaal
| Proposed standard
|
|
RFC 6248
|
| 5561
| LDP Capabilities
| B. Thomas, K. Raza, S. Aggarwal, R. Aggarwal, JL. Le Roux
| Proposed standard
|
|
|
| 5562
| Adding Explicit Congestion Notification (ECN) Capability to TCP's SYN/ACK Packets
| A. Kuzmanovic, A. Mondal, S. Floyd, K. Ramakrishnan
| Experimental
|
|
|
| 5563
| WiMAX Forum / 3GPP2 Proxy Mobile IPv4
| K. Leung, G. Dommety, P. Yegani, K. Chowdhury
| Informational
|
|
|
| 5564
| Linguistic Guidelines for the Use of the Arabic Language in Internet Domains
| A. El-Sherbiny, M. Farah, I. Oueichek, A. Al-Zoman
| Informational
|
|
|
| 5565
| Softwire Mesh Framework
| J. Wu, Y. Cui, C. Metz, E. Rosen
| Proposed standard
|
|
|
| 5566
| BGP IPsec Tunnel Encapsulation Attribute
| L. Berger, R. White, E. Rosen
| Proposed standard
|
RFC 9012
|
|
| 5567
| An Architectural Framework for Media Server Control
| T. Melanchuk, Ed.
| Informational
|
|
|
| 5568
| Mobile IPv6 Fast Handovers
| R. Koodli, Ed.
| Proposed standard
|
|
RFC 7411
|
| 5569
| IPv6 Rapid Deployment on IPv4 Infrastructures (6rd)
| R. Despres
| Informational
|
|
|
| 5570
| Common Architecture Label IPv6 Security Option (CALIPSO)
| M. StJohns, R. Atkinson, G. Thomas
| Informational
|
|
|
| 5571
| Softwire Hub and Spoke Deployment Framework with Layer Two Tunneling Protocol Version 2 (L2TPv2)
| B. Storer, C. Pignataro, Ed., M. Dos Santos, B. Stevant, Ed., L. Toutain, J. Tremblay
| Proposed standard
|
|
|
| 5572
| IPv6 Tunnel Broker with the Tunnel Setup Protocol (TSP)
| M. Blanchet, F. Parent
| Experimental
|
|
|
| 5573
| Asynchronous Channels for the Blocks Extensible Exchange Protocol (BEEP)
| M. Thomson
| Experimental
|
|
|
| 5574
| RTP Payload Format for the Speex Codec
| G. Herlein, J. Valin, A. Heggestad, A. Moizard
| Proposed standard
|
|
|
| 5575
| Dissemination of Flow Specification Rules
| P. Marques, N. Sheth, R. Raszuk, B. Greene, J. Mauch, D. McPherson
| Proposed standard
|
RFC 8955
|
RFC 7674
|
| 5576
| Source-Specific Media Attributes in the Session Description Protocol (SDP)
| J. Lennox, J. Ott, T. Schierl
| Proposed standard
|
|
|
| 5577
| RTP Payload Format for ITU-T Recommendation G.722.1
| P. Luthi, R. Even
| Proposed standard
|
|
|
| 5578
| PPP over Ethernet (PPPoE) Extensions for Credit Flow and Link Metrics
| B. Berry, Ed., S. Ratliff, E. Paradise, T. Kaiser, M. Adams
| Informational
|
|
|
| 5579
| Transmission of IPv4 Packets over Intra-Site Automatic Tunnel Addressing Protocol (ISATAP) Interfaces
| F. Templin, Ed.
| Informational
|
|
|
| 5580
| Carrying Location Objects in RADIUS and Diameter
| H. Tschofenig, Ed., F. Adrangi, M. Jones, A. Lior, B. Aboba
| Proposed standard
|
|
RFC 8559
|
| 5581
| The Camellia Cipher in OpenPGP
| D. Shaw
| Informational
|
RFC 9580
|
|
| 5582
| Location-to-URL Mapping Architecture and Framework
| H. Schulzrinne
| Informational
|
|
|
| 5583
| Signaling Media Decoding Dependency in the Session Description Protocol (SDP)
| T. Schierl, S. Wenger
| Proposed standard
|
|
|
| 5584
| RTP Payload Format for the Adaptive TRansform Acoustic Coding (ATRAC) Family
| M. Hatanaka, J. Matsumoto
| Proposed standard
|
|
|
| 5585
| DomainKeys Identified Mail (DKIM) Service Overview
| T. Hansen, D. Crocker, P. Hallam-Baker
| Informational
|
|
|
| 5586
| MPLS Generic Associated Channel
| M. Bocci, Ed., M. Vigoureux, Ed., S. Bryant, Ed.
| Proposed standard
|
|
RFC 6423, RFC 7026, RFC 7214, RFC 7274
|
| 5587
| Extended Generic Security Service Mechanism Inquiry APIs
| N. Williams
| Proposed standard
|
|
|
| 5588
| Generic Security Service Application Program Interface (GSS-API) Extension for Storing Delegated Credentials
| N. Williams
| Proposed standard
|
|
|
| 5589
| Session Initiation Protocol (SIP) Call Control - Transfer
| R. Sparks, A. Johnston, Ed., D. Petrie
| Best current practice
|
|
|
| 5590
| Transport Subsystem for the Simple Network Management Protocol (SNMP)
| D. Harrington, J. Schoenwaelder
| Internet standard
|
|
|
| 5591
| Transport Security Model for the Simple Network Management Protocol (SNMP)
| D. Harrington, W. Hardaker
| Internet standard
|
|
|
| 5592
| Secure Shell Transport Model for the Simple Network Management Protocol (SNMP)
| D. Harrington, J. Salowey, W. Hardaker
| Proposed standard
|
|
|
| 5593
| Internet Message Access Protocol (IMAP) - URL Access Identifier Extension
| N. Cook
| Proposed standard
|
|
|
| 5594
| Report from the IETF Workshop on Peer-to-Peer (P2P) Infrastructure, May 28, 2008
| J. Peterson, A. Cooper
| Informational
|
|
|
| 5595
| The Datagram Congestion Control Protocol (DCCP) Service Codes
| G. Fairhurst
| Proposed standard
|
|
RFC 6335
|
| 5596
| Datagram Congestion Control Protocol (DCCP) Simultaneous-Open Technique to Facilitate NAT/Middlebox Traversal
| G. Fairhurst
| Proposed standard
|
|
|
| 5597
| Network Address Translation (NAT) Behavioral Requirements for the Datagram Congestion Control Protocol
| R. Denis-Courmont
| Best current practice
|
|
|
| 5598
| Internet Mail Architecture
| D. Crocker
| Informational
|
|
|
