Network Working Group Internet Engineering Task Force
Request for Comments: 2500 J. Reynolds
Obsoletes: 2400, 2300, 2200, 2000, 1920, 1880, R. Braden
1800, 1780, 1720, 1610, 1600, 1540, 1500, 1410, Editors
1360, 1280, 1250, 1200, 1140, 1130, 1100, 1083 June 1999
STD: 1
Category: Standards Track

Internet Official Protocol Standards

Status of this Memo

This memo describes the state of standardization of protocols used in
the Internet as determined by the Internet Engineering Task Force
(IETF). This memo is an Internet Standard. Distribution of this
memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

Table of Contents

1. IntrodUCtion . . . . . . . . . . . . . . . . . . . . . . . 2
2. Current Technical Specifications . . . . . . . . . . . . . 4
2.1. Standard Protocols . . . . . . . . . . . . . . . . . . . 5
2.2. Network-Specific Standard Protocols . . . . . . . . . . 6
2.3. Draft Standard Protocols . . . . . . . . . . . . . . . . 7
2.4. Proposed Standard Protocols . . . . . . . . . . . . . . 9
2.5. EXPerimental Protocols . . . . . . . . . . . . . . . . . 18
3. Current Applicability Statements . . . . . . . . . . . . . 21
4. Non-Standard Protocols . . . . . . . . . . . . . . . . . . 22
4.1. Informational Protocol . . . . . . . . . . . . . . . . . 22
4.2. Historic Protocols . . . . . . . . . . . . . . . . . . . 24
5. Contacts . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1. IAB, IETF, and IRTF Contacts . . . . . . . . . . . . . . 25
5.2. Internet Assigned Numbers Authority (IANA) Contact . . . 25
5.3. Request for Comments Editor Contact . . . . . . . . . . 26
5.4. Requests for Comments Distribution Contact . . . . . . . 26
5.5. Sources for Requests for Comments . . . . . . . . . . . 26
6. Security Considerations . . . . . . . . . . . . . . . . . 26
7. Editors' Addresses . . . . . . . . . . . . . . . . . . . . 27
Full Copyright Statement . . . . . . . . . . . . . . . . . . . 28

1. Introduction

This memo summarizes the status of Internet protocols and
specifications. It is published by the RFCEditor in accordance with
Section 2.1 of "The Internet Standards Process -- Revision 3", RFC
2026, which specifies the rules and procedures by which all Internet
stnadards are set. This memo is prepared by the RFCEditor for the
IESG and IAB. It is a member of a series of summary memos that are
published approximately every one hundred RFCs; please see
www.rfc-editor.org.

This memo lists the level and status of the archival documents known
as RFCs (Request for Comments) within the Internet standards process.
The reader is urged to review RFC2026 for essential context for
interpreting this memo.

The following introductory text is quoted directly from RFC2026:

"The Internet, a loosely-organized international collaboration of
autonomous, interconnected networks, supports host-to-host
communication through voluntary adherence to open protocols and
procedures defined by Internet Standards. There are also many
isolated interconnected networks, which are not connected to the
global Internet but use the Internet Standards.

The Internet Standards Process described in this document is
concerned with all protocols, procedures, and conventions that are
used in or by the Internet, whether or not they are part of the
TCP/IP protocol suite. In the case of protocols developed and/or
standardized by non-Internet organizations, however, the Internet
Standards Process normally applies to the application of the
protocol or procedure in the Internet context, not to the
specification of the protocol itself.

In general, an Internet Standard is a specification that is stable
and well-understood, is technically competent, has multiple,
independent, and interoperable implementations with substantial
operational experience, enjoys significant public support, and is
recognizably useful in some or all parts of the Internet.

Each distinct version of an Internet standards-related
specification is published as part of the "Request for Comments"
(RFC) document series. This archival series is the official
publication channel for Internet standards documents and other
publications of the IESG, IAB, and Internet community. RFCs can
be oBTained from a number of Internet hosts using anonymous FTP,
gopher, World Wide Web, and other Internet document-retrieval
systems.

The rules for formatting and submitting an RFCare defined in [5].
Every RFCis available in ASCII text. Some RFCs are also
available in other formats. The other versions of an RFCmay
contain material (such as diagrams and figures) that is not
present in the ASCII version, and it may be formatted differently.

*********************************************************
* *
* A stricter requirement applies to standards-track *
* specifications: the ASCII text version is the *
* definitive reference, and therefore it must be a *
* complete and accurate specification of the standard, *
* including all necessary diagrams and illustrations. *
* *
*********************************************************

The status of Internet protocol and service specifications is
summarized periodically in an RFCentitled "Internet Official
Protocol Standards" [1]. This RFCshows the level of maturity and
other helpful information for each Internet protocol or service
specification (see section 3).

Specifications subject to the Internet Standards Process fall into
one of two categories: Technical Specification (TS) and
Applicability Statement (AS).

Some RFCs document Internet Standards. These RFCs form the "STD"
subseries of the RFCseries [4]. When a specification has been
adopted as an Internet Standard, it is given the additional label
"STDxxx", but it keeps its RFCnumber and its place in the RFC
series. (see section 4.1.3)

Some RFCs standardize the results of community deliberations about
statements of principle or conclusions about what is the best way
to perform some operations or IETF process function. These RFCs
form the specification has been adopted as a BCP, it is given the
additional label "BCPxxx", but it keeps its RFCnumber and its
place in the RFCseries. (see section 5)

Not all specifications of protocols or services for the Internet
should or will become Internet Standards or BCPs. Such non-
standards track specifications are not subject to the rules for
Internet standardization. Non-standards track specifications may
be published directly as "Experimental" or "Informational" RFCs at
the discretion of the RFCEditor in consultation with the IESG
(see section 4.2)."

Section 2 of this memo lists all Technical Specification RFCs that
are in the standards track, and Section 3 lists Applicability
Statement RFCs in the standards track. Section 4 lists those
protocol specification RFCs that are off the standards track
(Informational and Historic status). This memo does not list
Informational RFCs that may be of general interest to the community
but do not specify protocols for the Internet. It also does not list
BCP RFCs. Telnet options have been added into the lists.

2. Current Technical Specifications

Subsections 2.1-2.5 list the standards in groups by protocol state.
In the following lists, shorthand nicknames have been shown for many
of the major protocols. These names are commonly used in discourse
on Internet mailing lists.

2.1. Standard Protocols

Protocol Name RFCSTD *
======== ===================================== ==== === =
-------- Internet Official Protocol Standards 2500 1
-------- Assigned Numbers 1700 2
IP Internet Protocol 791 5
as amended by:--------
-------- IP Subnet Extension 950 5
-------- IP Broadcast Datagrams 919 5
-------- IP Broadcast Datagrams with Subnets 922 5
ICMP Internet Control Message Protocol 792 5
IGMP Internet Group Multicast Protocol 1112 5
UDP User Datagram Protocol 768 6
TCP Transmission Control Protocol 793 7
TELNET Telnet Protocol 854,855 8
FTP File Transfer Protocol 959 9
SMTP Simple Mail Transfer Protocol 821 10
SMTP-SIZE SMTP Service Ext for Message Size 1870 10
SMTP-EXT SMTP Service Extensions 1869 10
MAIL Format of Electronic Mail Messages 822 11
NTPV2 Network Time Protocol (Version 2) 1119 12
DOMAIN Domain Name System 1034,1035 13
DNS-MX Mail Routing and the Domain System 974 14
SNMP Simple Network Management Protocol 1157 15
SMI Structure of Management Information 1155 16
Concise-MIB Concise MIB Definitions 1212 16
MIB-II Management Information Base-II 1213 17
NETBIOS NetBIOS Service Protocols 1001,1002 19
ECHO Echo Protocol 862 20
DISCARD Discard Protocol 863 21
CHARGEN Character Generator Protocol 864 22
QUOTE Quote of the Day Protocol 865 23
USERS Active Users Protocol 866 24
DAYTIME Daytime Protocol 867 25
TIME Time Server Protocol 868 26
TOPT-BIN Binary Transmission 856 27
TOPT-ECHO Echo 857 28
TOPT-SUPP Suppress Go Ahead 858 29
TOPT-STAT Status 859 30
TOPT-TIM Timing Mark 860 31
TOPT-EXTOP Extended-Options-List 861 32
TFTP Trivial File Transfer Protocol 1350 33
TP-TCP ISO Transport Service on top of the TCP 1006 35
ETHER-MIB Ethernet MIB 1643 50
PPP Point-to-Point Protocol (PPP) 1661 51
PPP-HDLC PPP in HDLC Framing 1662 51
IP-SMDS IP Datagrams over the SMDS Service 1209 52

POP3 Post Office Protocol, Version 3 1939 53
OSPF2 Open Shortest Path First Routing V2 2328 54
IP-FR Multiprotocol over Frame Relay 2427 55*
RIP2 RIP Version 2-Carrying Additional Info. 2453 56*
RIP2-APP RIP Version 2 Protocol App. Statement 1722 57*
SMIv2 Structure of Management Information v2 2578 58*
CONV-MIB Textual Conventions for SNMPv2 2579 58*
CONF-MIB Conformance Statements for SNMPv2 2580 58*

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

2.2. Network-Specific Standard Protocols

Protocol Name RFCSTD *
======== ===================================== ===== === =
IP-ATM Classical IP and ARP over ATM 2225
ATM-ENCAP Multiprotocol Encapsulation over ATM 1483
IP-TR-MC IP Multicast over Token-Ring LANs 1469
IP-FDDI Transmission of IP and ARP over FDDI Net 1390 36
IP-X.25 X.25 and ISDN in the Packet Mode 1356
ARP Address Resolution Protocol 826 37
RARP A Reverse Address Resolution Protocol 903 38
IP-ARPA Internet Protocol on ARPANET BBN1822 39
IP-WB Internet Protocol on Wideband Network 907 40
IP-E Internet Protocol on Ethernet Networks 894 41
IP-EE Internet Protocol on Exp. Ethernet Nets 895 42
IP-IEEE Internet Protocol on IEEE 802 1042 43
IP-DC Internet Protocol on DC Networks 891 44
IP-HC Internet Protocol on Hyperchannel 1044 45
IP-ARC Transmitting IP Traffic over ARCNET Nets 1201 46
IP-SLIP Transmission of IP over Serial Lines 1055 47
IP-NETBIOS Transmission of IP over NETBIOS 1088 48
IP-IPX Transmission of 802.2 over IPX Networks 1132 49
IP-HIPPI IP over HIPPI 2067

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

2.3. Draft Standard Protocols

Protocol Name RFC
======== ===================================== =====
VACM-SNMP View-based Access Control Model for SMMP 2575*
USM-SNMPV3 User-based Security Model for SNMPv3 2574*
SNMP-APP SNMP Applications 2573*
MPD-SNMP Message Processing & Dispatching SNMP 2572*
ARCH-SNMP Architecture Describing SNMP Management Frameworks 2571*
ICMPv6 ICMPv6 for IPv6 2463*
IPV6-AUTO IPv6 Stateless Address Autoconfiguation 2462*
IPV6-ND Neighbor Discovery for IP Version 6 2461*
IPV6 IPv6 Specification 2460*
URI-GEN URI: Generic Syntax 2396
IARP Inverse Address Resolution Protocol 2390
TN3270E Telnet Option - TN3270 Enhancements 2355*
TFTP-Opt TFTP Options 2349
TFTP-Blk TFTP Blocksize Option 2348
TFTP-Ext TFTP Option Extension 2347
ONE-PASS One-Time PassWord System 2289
SMTP-Pipe SMTP Serv. Ext. for Command Pipelining 2197
DHCP-BOOTP DHCP Options and BOOTP Extensions 2132
DHCP Dynamic Host Configuration Protocol 2131
FRAME-MIB Management Information Base for Frame 2115
------- Clarifications and Extensions BOOTP 1542
DHCP-BOOTP Interoperation Between DHCP and BOOTP 1534
BOOTP Bootstrap Protocol 951,2132
MIME-CONF MIME Conformance Criteria 2049
MIME-MSG MIME Msg Header Ext for Non-ASCII 2047
MIME-MEDIA MIME Media Types 2046
MIME Multipurpose Internet Mail Extensions 2045
PPP-CHAP PPP Challenge Handshake Authentication 1994
PPP-MP PPP Multilink Protocol 1990
PPP-LINK PPP Link Quality Monitoring 1989
COEX-MIB Coexistence between SNMPV1 & SNMPV2 1908
SNMPv2-MIB MIB for SNMPv2 1907
TRANS-MIB Transport Mappings for SNMPv2 1906
OPS-MIB Protocol Operations for SNMPv2 1905
CON-MD5 Content-MD5 Header Field 1864
OSPF-MIB OSPF Version 2 MIB 1850
STR-REP String Representation ... 1779
X.500syn X.500 String Representation ... 1778
X.500lite X.500 Lightweight ... 1777
BGP-4-APP Application of BGP-4 1772
BGP-4 Border Gateway Protocol 4 1771
PPP-DNCP PPP DECnet Phase IV Control Protocol 1762
RMON-MIB Remote Network Monitoring MIB 1757
802.5-MIB IEEE 802.5 Token Ring MIB 1748

RIP2-MIB RIP Version 2 MIB Extension 1724
SIP-MIB SIP Interface Type MIB 1694
------- Def Man Objs Parallel-printer-like 1660
------- Def Man Objs RS-232-like 1659
------- Def Man Objs Character Stream 1658
BGP-4-MIB BGP-4 MIB 1657
SMTP-8BIT SMTP Service Ext or 8bit-MIMEtransport 1652
OSI-NSAP Guidelines for OSI NSAP Allocation 1629
ISO-TS-ECHO Echo for ISO-8473 1575
DECNET-MIB DECNET MIB 1559
BRIDGE-MIB BRIDGE-MIB 1493
NTPV3 Network Time Protocol (Version 3) 1305
FINGER Finger Protocol 1288
IP-MTU Path MTU Discovery 1191
TOPT-LINE Linemode 1184
NICNAME WhoIs Protocol 954

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

2.4. Proposed Standard Protocols

Protocol Name RFC
======== ===================================== =====
-------- PKIX Operational Protocols: FTP and HTTP 2585*
-------- APPN/HPR in IP Networks MIB 2584*
TCP-CC TCP Congestion Control 2581*
APP-MIB Application Management MIB 2564*
-------- DHCP Auto-Configuration Option 2563*
-------- TN3270E-RT-MIB 2562*
-------- TN3270E Using SMIv2 MIB 2561*
-------- Internet X.509 Public Key Infra. Op. Proto. LDAPv2 2559*
-------- SONET/SDH Interface Type MIB 2558*
MHtml MIME Encap. of Aggregate Documents, such as HTML 2557*
-------- SMTP Service Extension for Authentication 2554*
-------- Use of BGP-4 Multipro. Ext. for IPv6 IDR 2545*
SIP Session Initiation Protocol 2543*
DHK-DNS Storage of Diffie-Hellman Keys in DNS 2539*
SC-DNS Storing Certificates in the DNS 2538*
-------- RSA/MD5 KEYs and SIGs in the DNS 2537*
-------- DSA KEYs and SIGs in the DNS 2536*
DNS-SECEXT Domain Name System Security Extensions 2535*
-------- Media Features for Display, Print, Fax 2534*
-------- Transmission of IPv6 Packets over IPv4 2529*
-------- Reserved IPv6 Subnet Anycast Addresses 2526*
WEBDAV HTTP Ext. for Distributed Authoring 2518*
ATM-MIBMAN MIB for ATM Management 2515*
ATM-TC-OID ATM Textual Conventions and OIDs 2514*
-------- Connection-Oriented Accounting MIB 2513*
-------- Accounting Information for ATM Networks 2512*
X.509-CRMF Internet X.509 CRMF 2511*
PKICMP Internet X.509 PKI CMP 2510*
IPCOM-PPP IP Header Compression over PPP 2509*
-------- Compressing IP/UDP/RTP Headers 2508*
-------- IP Header Compression 2507*
-------- IPv6 Datagrams on ARCnet 2497*
DS3-E3-MIB DS3/E3 Interface Type MIB 2496*
-------- DS1/E1/DS2/E2 MIB 2495*
-------- DSO MIB / DSOBUNDLE MIB 2494*
-------- 15 Minute Based Performance History TCs 2493*
IPv6ATMNET IPv6 over ATM Networks 2492*
IPv6-NBMA IPv6 over Non-Broadcast Multiple Access 2491*
-------- SMTP Serv. Ext. for Secure SMTP over TLS 2487*
NAI Network Access Identifier 2486*
-------- DCHP Option for the Open Group's UAP 2485*
-------- PPP LCP Internationalization Option 2484*
-------- Gateways and MIME Security Multiparts 2480*
-------- GSS-API Negotiation Mechanism 2478*

-------- Message Submission 2476*
DIFFSRV Architecture for Differentiated Service 2475*
-------- Differentiated Services Field 2474*
-------- Generic Packet Tunneling in IPv6 2473*
IPv6-PPP IP Version 6 over PPP 2472*
-------- IPv6 Packets over Token Ring Networks 2470*
-------- IPv6 Packets over FDDI Networks 2467*
ICMPv6-MIB ICMPv6 Group MIB 2466*
-------- Textual Conventions, General Group MIB 2465*
-------- IPv6 Packets over Ethernet Networks 2464*
-------- Internet X.509 Public Key Infrastructure 2459*
EBN-MIB Extended Border Node MIB 2457*
-------- APPN TRAPS MIB 2456*
APPN-MIB APPN MIB 2455*
-------- UDP MIB for IPv6 2454*
-------- TCP MIB for IPv6 2452*
-------- ESP CBC-Mode Cipher Algorithms 2451*
POP3-EXT POP3 Extension Mechanism 2449*
IMIP iCalendar Message-Based Interoperability 2447*
ITIP iCalendar Message-Based Interoperability 2446*
ICALENDAR Internet Calendaring, Scheduling Core.. 2445*
OTP-SASL OTP SASL Mechanism 2444*
-------- OpenPGP Message Format 2440*
-------- BGP Route Flap Damping 2439*
-------- RTP Payload Format for JPEG-compressed Video 2435*
-------- RTP Payload Format for BT.656 Video Encoding 2431*
-------- RTP Payload Format for H.263+ 2429*
-------- FTP Extensions for IPv6 and NATs 2428
MIME-VCARD vCard MIME Directory Profile 2426
TXT-DIR MIME Content-Type for Directory Info 2425
CONT-DUR Content-Duration MIME Header 2424
MIME-VPIM VPIM Voice Message 2423
MIME-ADPCM Toll Quality Voice - 32 kbit/s ADPC 2422
MIME-VP2 Voice Profile for Internet Mail V2 2421
-------- Multicast/UNI 3.0/3.1 based ATM MIB 2417
-------- NULL Encryption Algorithm and Its Use With IPsec 2410*
IKE The Internet Key Exchange 2409*
ISAKMP Internet Security Association and Key Management Pro. 2408*
ISAKMPSEC IP Security Domain of Interpretation for ISAKMP 2407*
ESP IP Encapsulating Security Payload 2406*
ESPDES-CBC ESP DES-CBC Cipher Algorithm With Explicit IV 2405*
-------- Use of HMAC-SHA-1-96 within ESP and AH 2404*
-------- Use of HMAC-MD5-96 within ESP and AH 2403*
IP-AUTH IP Authentication Header 2402*
IPSEC Security Architecture for the Internet Protocol 2401*
DATA-URL "data" URL scheme 2397
CIDMID-URL Content-ID and Message-ID URLs 2392
IPCOMP IP Payload Compression Protocol 2393*

FTP-FNEGO Feature negotiation mechanism for FTP 2389
-------- MIME Multipart/form-data 2388
MIME-RELAT MIME Multipart/Related Content-type 2387
-------- Protection of BGP Sessions via TCP MD5 2385
POP-URL POP URL Scheme 2384
-------- Interoperation of CLS and GS with ATM 2381
-------- RSVP over ATM Imple. Requirements 2380
-------- IPv6 Aggreg. Global Unicast Addr. Format 2374
-------- IPv6 Addressing Architecture 2373
TIPV3 Transaction Internet Protocol V3 2371
OSPF-LSA OSPF Opaque LSA Option 2370
-------- Use of URLs as Meta-Syntax... 2369
URLMAILTO mailto URL scheme 2368
PPP-AAL PPP Over AAL 2364
PPP-FUNI PPP Over FUNI 2363
IMAP4UIDPL IMAP4 UIDPLUS Extension 2359
-------- Ethernet-like Interface Types MIB 2358
MOBILIPREV Reverse Tunneling for Mobile IP 2344
IMAP4NAME IMAP4 Namespace 2342
VRRP Virtual Router Redundancy Protocol 2338
NHRP-SCSP Distributed NHRP Service Using SCSP 2335
SCSP Server Cache Synchronization Protocol 2334
NHRP NBMA Next Hop Resolution Protocol 2332
UNI-SIG ATM Sig Support (IPOA) UNI Signalling 2331
SDP Session Description Protocol 2327
RTSP Real Time Streaming Protocol 2326
IPOA-MIB Classical IP and ARP Over ATM MIB 2320
DNS-NCACHE Negative Caching of DNS Queries 2308
SMFAX-IM Simple Mode of FAX Using Internet Mail 2305
MINFAX-IM Minimal FAX addr format in Internet Mail 2304
MIN-PSTN Min. PSTN addr format in Internet Mail 2303
TIFF Tag Image File Format 2302
FFIF File Format for Internet Fax 2301
EMF-MDN Extensible Message Format for MDN 2298
OR-ADD O/R Address hierarchy in X.500 2294
SUBTABLE Tables and Subtrees in X.500 2293
-------- Mobile-IPv4 Config Opt for PPP IPCP 2290
SLM-APP System-Level Managed Objects for Apps 2287
PPP-EAP PPP Extensible Authentication Protocol 2284
MEXT-BGP4 Multiprotocol Extensions for BGP-4 2283
RPSL Routing Policy Specification Language 2280
UTF-8 UTF-8 transformation format of ISO 10646 2279
-------- IEEE 802.12 Repeater MIB 2266
AGENTX Agent Extensibility Protocol 2257
-------- Summary of the X.500(96) with LDAPv3 2256
LDAP-URL LDAP URL Format 2255
STR-LDAP String Rep of LDAP Search Filters 2254
LDAP3-UTF8 LDAPv3: UTF-8 String Rep 2253

LDAP3-ATD LDAP3-: Attribute Syntax Definitions 2252
LDAPV3 Lightweight Directory Access Protocol 2251
RTP-MPEG RTP Payload Format for MPEG1/MPEG2 2250
MAIL-MIB Mail Monitoring MIB 2249
NSM-MIB Network Services Monitoring MIB 2248
-------- Using Domains LDAP/X.500 Dist. Names 2247
SASL-ANON Anonymous SASL Mechanism 2245
ACAP Application Configuration Access 2244
OTP-ER OTP Extended Responses 2243
NETWAREIP NetWare/IP Domain Name and Information 2242
DHCP-NDS DHCP Options for Novell Directory Serv. 2241
MAUS-MIB IEEE 802.3 Medium Attachment Units MIB 2239
HPR-MIB Definitions of Managed Objects for HPR 2238
IGMP Internet Group Management Protocol V2 2236
ABNF Augmented BNF for Syntax Specifications 2234
INTERGRMIB Interfaces Group MIB 2233
DLUR-MIB Definitions of Managed Objects for DLUR 2232
MIME-EXT MIME Parameter Value & Encoded Word Ext 2231
FTPSECEXT FTP Security Extensions 2228
--------- Simple Hit-Metering, Usage-Limiting HTTP 2227
--------- IP Broadcast over ATM Networks 2226
SASL Simple Authentication and Security Layer 2222
IMAP4LOGIN IMAP4 Login Referrals 2221
--------- Schema for Internet White Pages Service 2218
--------- Characterization Parameters for ISNE 2215
--------- Integrated Services MIB Guar Serv Ext 2214
--------- Integrated Services MIB using SMIv2 2213
GQOS Spec. of Guaranteed Quality of Service 2212
--------- Spec. of Controlled-Load Net Ele Serv 2211
RSVP-IS Use of RSVP with IETF Integrated Serv 2210
RSVP-MPR RSVP Messaging Processing Rules 2209
RSVP-IPSEC RSVP Extensions for IPSEC Data Flows 2207
RSVP-MIB RSVP Management Information Base 2206
RSVP Resource ReSerVation Protocol V1 2205
RPCSEC-GSS RPCSEC_GSS Protocol Specification 2203
RTP-RAD RTP Payload for Redundant Audio Data 2198
IMAPPOPAU IMAP/POP AUTHorize Extension 2195
IMAP4MAIL IMAP4 Mailbox Referrals 2193
IMAP-URL IMAP URL Scheme 2192
--------- RTP Payload Format for H.263 Video ST 2190
--------- The Content-Disposition Header Field 2183
DNS-CLAR Clarifications to the DNS Specification 2181
IMAP4-IDLE IMAP4 IDLE command 2177
SLP Service Location Protocol 2165
--------- X.500/LDAP Directory/MIXER Address Map. 2164
DNS-MCGAM Using DNS to Distribute MCGAM 2163
--------- Carrying PostScript in X.400 and MIME 2160
--------- A MIME Body Part for FAX 2159

--------- X.400 Image Body Parts 2158
--------- Mapping between X.400 and RFC-822/MIME 2157
MIXER Mime Internet X.400 Enhanced Relay 2156
APPN-MIB Definitions of Managed Objects for APPN 2155
IPv6-Jumbo TCP and UDP over IPv6 Jumbograms 2147
MAIL-SERV Mailbox Names for Common Services 2142
URN-SYNTAX URN Syntax 2141
RADIUS Remote Authentication Dial In Service 2138
SDNSDU Secure Domain Name System Dynamic Update 2137
DNS-UPDATE Dynamic Updates in the DNS 2136
DC-MIB Dial Control MIB using SMIv2 2128
ISDN-MIB ISDN MIB using SMIv2 2127
ITOT ISO Transport Service on top of TCP 2126
BAP-BACP PPP-BAP, PPP-BACP 2125
VEMMI-URL VEMMI URL Specification 2122
ROUT-ALERT IP Router Alert Option 2113
MHTML MIME E-mail Encapsulation 2110
HTTP-STATE HTTP State Management Mechanism 2109
802.3-MIB 802.3 Repeater MIB using SMIv2 2108
PPP-NBFCP PPP NetBIOS Frames Control Protocol 2097
TABLE-MIB IP Forwarding Table MIB 2096
RIP-TRIG Trigger RIP 2091
IMAP4-LIT IMAP4 non-synchronizing literals 2088
IMAP4-QUO IMAP4 QUOTA extension 2087
IMAP4-ACL IMAP4 ACL Extension 2086
HMAC-MD5 HMAC-MD5 IP Auth. with Replay Prevention 2085
RIP2-MD5 RIP-2 MD5 Authentication 2082
RIPNG-IPV6 RIPng for IPv6 2080
URI-ATT URI Attribute Type and Object Class 2079
GSSAP Generic Security Service Application 2078
MIME-MODEL Model Primary MIME Types 2077
RMON-MIB Remote Network Monitoring MIB 2074
HTML-INT HTML Internationalization 2070
DAA Digest Access Authentication 2069
HTTP-1.1 Hypertext Transfer Protocol -- HTTP/1.1 2068
DNS-SEC Domain Name System Security Extensions 2065
IMAPV4 Internet Message Access Protocol v4rev1 2060
URLZ39.50 Uniform Resource Locators for Z39.50 2056
SNANAU-APP SNANAU APPC MIB using SMIv2 2051
PPP-SNACP PPP SNA Control Protocol 2043
ENTITY-MIB Entity MIB using SMIv2 2037
RTP-JPEG RTP Payload Format for JPEG-compressed 2035
SMTP-ENH SMTP Enhanced Error Codes 2034
RTP-H.261 RTP Payload Format for H.261 2032
RTP-CELLB RTP Payload Format of Sun's CellB 2029
SPKM Simple Public-Key GSS-API Mechanism 2025
DLSW-MIB DLSw MIB using SMIv2 2024
IPV6-PPP IP Version 6 over PPP 2023

MULTI-UNI Multicast over UNI 3.0/3.1 based ATM 2022
RMON-MIB RMON MIB using SMIv2 2021
802.12-MIB IEEE 802.12 Interface MIB 2020
IPV6-FDDI Transmission of IPv6 Packets Over FDDI 2019
TCP-ACK TCP Selective Acknowledgement Options 2018
URL-ACC URL Access-Type 2017
MIME-PGP MIME Security with PGP 2015
MIB-UDP SNMPv2 MIB for UDP 2013
MIB-TCP SNMPv2 MIB for TCP 2012
MIB-IP SNMPv2 MIB for IP 2011
MOBILEIPMIBMobile IP MIB Definition using SMIv2 2006
MINI-IP Minimal Encapsulation within IP 2004
IPENCAPIP IP Encapsulation within IP 2003
MOBILEIPSUPIP Mobility Support 2002
TCPSLOWSRT TCP Slow Start, Congestion Avoidance... 2001
BGP-COMM BGP Communities Attribute 1997
DNS-NOTIFY Mech. for Notification of Zone Changes 1996
DNS-IZT Incremental Zone Transfer in DNS 1995
SMTP-ETRN SMTP Service Extension ETRN 1985
SNA Serial Number Arithmetic 1982
MTU-IPV6 Path MTU Discovery for IP version 6 1981
PPP-FRAME PPP in Frame Relay 1973
IPV6-ETHER Transmission IPv6 Packets Over Ethernet 1972
PPP-ECP PPP Encryption Control Protocol 1968
GSSAPI-KER Kerberos Version 5 GSS-API Mechanism 1964
PPP-CCP PPP Compression Control Protocol 1962
GSSAPI-SOC GSS-API Auth for SOCKS Version 5 1961
LDAP-STR String Rep. of LDAP Search Filters 1960
LDAP-URL LDAP URL Format 1959
TRANS-IPV6 Transition Mechanisms IPv6 Hosts/Routers 1933
AUTH-SOCKS Username Authentication for SOCKS V5 1929
SOCKSV5 SOCKS Protocol Version 5 1928
WHOIS++M How to Interact with a Whois++ Mesh 1914
WHOIS++A Architecture of Whois++ Index Service 1913
DSN Delivery Status Notifications 1894
EMS-CODE Enhanced Mail System Status Codes 1893
MIME-RPT Multipart/Report 1892
SMTP-DSN SMTP Delivery Status Notifications 1891
RTP-AV RTP Audio/Video Profile 1890
RTP Transport Protocol for Real-Time Apps 1889
DNS-IPV6 DNS Extensions to support IPv6 1886
HTML Hypertext Markup Language - 2.0 1866
MIME-Sec MIME Object Security Services 1848
MIME-Encyp MIME: Signed and Encrypted 1847
WHOIS++ Architecture of the WHOIS++ service 1835
-------- Binding Protocols for ONC RPC Version 2 1833
XDR External Data Representation Standard 1832
RPC Remote Procedure Call Protocol V. 2 1831

-------- ESP DES-CBC Transform 1829
-------- IP Authentication using Keyed MD5 1828
ESP IP Encapsulating Security Payload 1827
IPV6-AH IP Authentication Header 1826
-------- Security Architecture for IP 1825
R Requirements for IP Version 4 Routers 1812
URL Relative Uniform Resource Locators 1808
CLDAP Connection-less LDAP 1798
OSPF-DC Ext. OSPF to Support Demand Circuits 1793
OSI-Dir OSI User Friendly Naming ... 1781
MIME-EDI MIME Encapsulation of EDI Objects 1767
Lang-Tag Tags for Identification of Languages 1766
XNSCP PPP XNS IDP Control Protocol 1764
BVCP PPP Banyan Vines Control Protocol 1763
Print-MIB Printer MIB 1759
ATM-SIG ATM Signaling Support for IP over ATM 1755
IPNG Recommendation for IP Next Generation 1752
802.5-SSR 802.5 SSR MIB using SMIv2 1749
SDLCSMIv2 SNADLC SDLC MIB using SMIv2 1747
BGP4/IDRP BGP4/IDRP for IP/OSPF Interaction 1745
AT-MIB Appletalk MIB 1742
MacMIME MIME Encapsulation of Macintosh files 1740
URL Uniform Resource Locators 1738
POP3-AUTH POP3 AUTHentication command 1734
IMAP4-AUTH IMAP4 Authentication Mechanisms 1731
RDBMS-MIB RDMS MIB - using SMIv2 1697
MODEM-MIB Modem MIB - using SMIv2 1696
ATM-MIB ATM Management Version 8.0 using SMIv2 1695
TMUX Transport Multiplexing Protocol 1692
SNANAU-MIB SNA NAUs MIB using SMIv2 1666
PPP-TRANS PPP Reliable Transmission 1663
-------- Postmaster Convention X.400 Operations 1648
PPP-BCP PPP Bridging Control Protocol 1638
UPS-MIB UPS Management Information Base 1628
PPP-SONET PPP over SONET/SDH 1619
PPP-ISDN PPP over ISDN 1618
DNS-R-MIB DNS Resolver MIB Extensions 1612
DNS-S-MIB DNS Server MIB Extensions 1611
FR-MIB Frame Relay Service MIB 1604
PPP-X25 PPP in X.25 1598
OSPF-NSSA The OSPF NSSA Option 1587
OSPF-Multi Multicast Extensions to OSPF 1584
SONET-MIB MIB SONET/SDH Interface Type 1595
RIP-DC Extensions to RIP to Support Demand Cir. 1582
-------- Evolution of the Interfaces Group of MIB-II Elective 1573
TOPT-ENVIR Telnet Environment Option 1572
PPP-LCP PPP LCP Extensions 1570
X500-MIB X.500 Directory Monitoring MIB 1567

CIPX Compressing IPX Headers Over WAM Media 1553
IPXCP PPP Internetworking Packet Exchange Control Elective 1552
SRB-MIB Source Routing Bridge MIB 1525
CIDR-STRA CIDR Address Assignment... 1519
CIDR-ARCH CIDR Architecture... 1518
-------- 802.3 MAU MIB 1515
HOST-MIB Host Resources MIB 1514
-------- Token Ring Extensions to RMON MIB 1513
FDDI-MIB FDDI Management Information Base 1512
KERBEROS Kerberos Network Authentication Ser (V5) 1510
GSSAPI Generic Security Service API: C-bindings 1509
DASS Distributed Authentication Security... 1507
-------- X.400 Use of Extended Character Sets 1502
HARPOON Rules for Downgrading Messages... 1496
Equiv X.400/MIME Body Equivalences 1494
IDPR Inter-Domain Policy Routing Protocol 1479
IDPR-ARCH Architecture for IDPR 1478
PPP/Bridge MIB Bridge PPP MIB 1474
PPP/IP MIB IP Network Control Protocol of PPP MIB 1473
PPP/SEC MIB Security Protocols of PPP MIB 1472
PPP/LCP MIB Link Control Protocol of PPP MIB 1471
X25-MIB Multiprotocol Interconnect on X.25 MIB 1461
SNMPv2 Introduction to SNMPv2 1441
PEM-KEY PEM - Key Certification 1424
PEM-ALG PEM - Algorithms, Modes, and Identifiers 1423
PEM-CKM PEM - Certificate-Based Key Management 1422
PEM-ENC PEM - Message Encryption and Auth 1421
SNMP-IPX SNMP over IPX 1420
SNMP-AT SNMP over AppleTalk 1419
SNMP-OSI SNMP over OSI 1418
FTP-FTAM FTP-FTAM Gateway Specification 1415
IDENT-MIB Identification MIB 1414
IDENT Identification Protocol 1413
DS3/E3-MIB DS3/E3 Interface Type 1407
DS1/E1-MIB DS1/E1 Interface Type 1406
BGP-OSPF BGP OSPF Interaction 1403
-------- Route Advertisement In BGP2 And BGP3 1397
SNMP-X.25 SNMP MIB Extension for X.25 Packet Layer 1382
SNMP-LAPB SNMP MIB Extension for X.25 LAPB 1381
PPP-ATCP PPP AppleTalk Control Protocol 1378
PPP-OSINLCP PPP OSI Network Layer Control Protocol 1377
TOPT-RFCRemote Flow Control 1372
SNMP-PARTY-MIB Administration of SNMP 1353
SNMP-SEC SNMP Security Protocols 1352
SNMP-ADMIN SNMP Administrative Model 1351
TOS Type of Service in the Internet 1349
PPP-IPCP PPP Control Protocol 1332
------- X.400 1988 to 1984 downgrading 1328

TCP-EXT TCP Extensions for High Performance 1323
NETFAX File Format for the Exchange of Images 1314
FDDI-MIB FDDI-MIB 1285
------- Encoding Network Addresses 1277
------- Replication and Distributed Operations 1276
------- COSINE and Internet X.500 Schema 1274
BGP-MIB Border Gateway Protocol MIB (Version 3) 1269
ICMP-ROUT ICMP Router Discovery Messages 1256
OSI-UDP OSI TS on UDP 1240
STD-MIBs Reassignment of Exp MIBs to Std MIBs 1239
IPX-IP Tunneling IPX Traffic through IP Nets 1234
IS-IS OSI IS-IS for TCP/IP Dual Environments 1195
IP-CMPRS Compressing TCP/IP Headers 1144
TOPT-XDL X Display Location 1096
TOPT-TERM Terminal Type 1091
TOPT-TS Terminal Speed 1079
TOPT-NAWS Negotiate About Window Size 1073
TOPT-X.3 X.3 PAD 1053
TOPT-DATA Data Entry Terminal 1043
TOPT-3270 Telnet 3270 Regime 1041
NNTP Network News Transfer Protocol 977
TOPT-TLN Terminal Location Number 946
TOPT-OM Output Marking 933
TOPT-TACACS TACACS User Identification 927
TOPT-EOR End of Record 885
TOPT-SNDL Send Location 779
TOPT-SUPO SUPDUP Output 749
TOPT-SUP SUPDUP 736
TOPT-BYTE Byte Macro 735
TOPT-REM Remote Controlled Trans and Echo 726
TOPT-LOGO Logout 727
TOPT-EXT Extended ASCII 698

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

2.5. Experimental Protocols

Protocol Name RFC
======== ===================================== =====
------- NewReno Modification to TCP's Fast Recovery Algorithm 2582*
------- Mapping between LPD and IPP Protocols 2569*
IPP-RAT Rationale for the Structure of IPP 2568*
IPP-DG Design Goals for an Internet Printing Protocol 2567*
IPP-M-S Internet Printing Protocol/1.0: Model and Semantics 2566*
IPP-E-T Internet Printing Protocol/1.0: Encoding and Transport 2565*
DNS-INFO Detached Domain Name System (DNS) Information 2540*
PHOTURIS-E Photuris: Extended Schemes and Attributes 2523*
PHOTURIS-S Photuris: Session-Key Management Protocol 2522*
ICMP-SEC ICMP Security Failures Messages 2521*
NHRP-MNHCS NHRP with Mobile NHCs 2520*
IPPM-MET IPPM Metrics for Measuring Connectivity 2498*
------- URI Resolution Services 2483*
ECN-IP Explicit Congestion Notification (ECN) to IP 2481*
------- IPv6 Testing Address Allocation 2471*
TCP-WIN Increasing TCP's Initial Window 2414
PIM-SM Protocol Independent Multicast-Sparse Mode 2362
------- Domain Names and Company Name Retrieva 2345
RTP-MPEG RTP Payload Format for Bundled MPEG 2343
------- Intra-LIS IP Multicast/Routers over ATM using PIM 2337
------- Safe Response Header Field 2310
LDAP-NIS Approach Using LDAP as a Network Information Service 2307
HTTP-RVSA HTTP Remote Variant Selection Algorithm 2296
TCN-HTTP Transparent Content Negotiation in HTTP 2295
TOPT-COMPORT Telnet Com Port Control 2217
------- Core Based Trees (CBT) Multicast Routing Architecture 2201
------- Core Based Trees (CBT version 2) Multicast Routing 2189
------- Trivial Convention using HTTP in URN Resolution 2169
------- Resolution of URIs using DNS 2168
MAP-MAIL X.400 Mapping and Mail-11 2162
MIME-ODA A MIME Body Part for ODA 2161
OSPF-DIG OSPF with Digital Signature 2154
GKMP-ARCH Group Key Management Protocol (GKMP) Architecture 2094
GKMP-SPEC Group Key Management Protocol (GKMP) Specification 2093
TOPT-CHARSET Telnet CHARSET 2066
IP-SCSI Encapsulating IP with the SCSI 2143
X.500-NAME Managing the X.500 Root Naming Context 2120
TFTP-MULTI TFTP Multicast Option 2090
IP-Echo IP Echo Host Service 2075
METER-MIB Traffic Flow Measurement Meter MIB 2064
TFM-ARCH Traffic Flow Measurement Architecture 2063
DNS-SRV Location of Services in the DNS 2052
URAS Uniform Resource Agents 2016
GPS-AR GPS-Based Addressing and Routing 2009

ETFTP Enhanced Trivial File Transfer Protocol 1986
BGP-RR BGP Route Reflection 1966
BGP-ASC Autonomous System Confederations for BGP 1965
SMKD Scalable Multicast Key Distribution 1949
HTML-TBL HTML Tables 1942
SNMPV2SM User-based Security Model for SNMPv2 1910
SNMPV2AI SNMPv2 Administrative Infrastructure 1909
SNMPV2CB Introduction to Community-based SNMPv2 1901
------- IPv6 Testing Address Allocation 1897
DNS-LOC Location Information in the DNS 1876
SGML-MT SGML Media Types 1874
CONT-MT Access Type Content-ID 1873
UNARP ARP Extension - UNARP 1868
------- Form-based File Upload in HTML 1867
------- BGP/IDRP Route Server Alternative 1863
------- IP Authentication using Keyed SHA 1852
ESP3DES ESP Triple DES Transform 1851
------- SMTP 521 Reply Code 1846
------- SMTP Serv. Ext. for Checkpoint/Restart 1845
------- SMTP Serv. Ext. Large and Binary MIME Msgs. 1830
ST2 Stream Protocol Version 2 1819
------- Content-Disposition Header 1806
------- Schema Publishing in X.500 Directory 1804
------- X.400-MHS use X.500 to support X.400-MHS Routing 1801
------- Class A Subnet Experiment 1797
TCP/IPXMIB TCP/IPX Connection Mib Specification 1792
------- TCP And UDP Over IPX Networks With Fixed Path MTU 1791
ICMP-DM ICMP Domain Name Messages 1788
CLNP-MULT Host Group Extensions for CLNP Multicasting 1768
OSPF-OVFL OSPF Database Overflow 1765
RWP Remote Write ProtocolL - Version 1.0 1756
NARP NBMA Address Resolution Protocol 1735
DNS-ENCODE DNS Encoding of Geographical Location 1712
TCP-POS An Extension to TCP: Partial Order Service 1693
T/TCP TCP Extensions for Transactions 1644
MIME-UNI Using Unicode with MIME 1641
Foobar FTP Operation Over Big Address Records 1639
X500-CHART Charting Networks in the X.500 Directory 1609
X500-DIR Representing IP Information in the X.500 Directory 1608
SNMP-DPI SNMP Distributed Protocol Interface 1592
CLNP-TUBA Use of ISO CLNP in TUBA Environments 1561
REM-PRINT TPC.INT Subdomain Remote Printing - Technical 1528
EHF-MAIL Encoding Header Field for Internet Messages 1505
RAP Internet Route Access Protocol 1476
TP/IX TP/IX: The Next Internet 1475
X400 Routing Coordination for X.400 Services 1465
DNS Storing Arbitrary Attributes in DNS 1464
IRCP Internet Relay Chat Protocol 1459

TOS-LS Link Security TOS 1455
SIFT/UFT Sender-Initiated/Unsolicited File Transfer 1440
DIR-ARP Directed ARP 1433
TOPT-AUTH Telnet Authentication Option 1416
TEL-SPX Telnet Authentication: SPX 1412
TEL-KER Telnet Authentication: Kerberos V4 1411
TRACE-IP Traceroute Using an IP Option 1393
DNS-IP Experiment in DNS Based IP Routing 1383
RMCP Remote Mail Checking Protocol 1339
TCP-HIPER TCP Extensions for High Performance 1323
MSP2 Message Send Protocol 2 1312
DSLCP Dynamically Switched Link Control 1307
-------- X.500 and Domains 1279
IN-ENCAP Internet Encapsulation Protocol 1241
CLNS-MIB CLNS-MIB 1238
CFDP Coherent File Distribution Protocol 1235
IP-AX.25 IP Encapsulation of AX.25 Frames 1226
ALERTS Managing Asynchronously Generated Alerts 1224
MPP Message Posting Protocol 1204
SNMP-BULK Bulk Table Retrieval with the SNMP 1187
DNS-RR New DNS RR Definitions 1183
IMAP2 Interactive Mail Access Protocol 1176
NTP-OSI NTP over OSI Remote Operations 1165
DMF-MAIL Digest Message Format for Mail 1153
RDP Reliable Data Protocol 908,1151
TCP-ACO TCP Alternate Checksum Option 1146
IP-DVMRP IP Distance Vector Multicast Routing 1075
VMTP Versatile Message Transaction Protocol 1045
COOKIE-JAR Authentication Scheme 1004
NETBLT Bulk Data Transfer Protocol 998
IRTP Internet Reliable Transaction Protocol 938
LDP Loader Debugger Protocol 909
RLP Resource Location Protocol 887
NVP-II Network Voice Protocol ISI-memo
PVP Packet Video Protocol ISI-memo

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

3. Current Applicability Statements

RFC1122 - Requirements for Internet hosts - communication layers
(STD 3)
RFC1123 - Requirements for Internet hosts - application and support
(STD 3)
RFC1370 - Applicability Statement for OSPF
RFC1517 - Applicability Statement for the Implementation of Classless
Inter-Domain Routing (CIDR)
RFC1722 - RIP Version 2 Protocol Applicability Statement
RFC1923 - RIPv1 Applicability Statement for Historic Status
RFC2005 - Applicability Statement for IP Mobility Support
RFC2039 - Applicability of Standards Track MIBs to Management of
World Wide Web Servers
RFC2081 - RIPng Protocol Applicability Statement
RFC2208 - Resource ReSerVation Protocol (RSVP) -- Version 1
Applicability Statement - Some Guidelines on Deployment
RFC2333 - NHRP Protocol Applicability Statement
RFC2556 - OSI connectionless transport services on top of UDP
Applicability Statement for Historic Status

4. Non-Standard Protocols

4.1. Informational Protocols

Please note that there are informational RFCs that do not specify
protocols and are not listed here.

Protocol Name RFC
======= ==================================== =====
AUDIO/L16 Audio/L16 MIME content type 2586*
FTP-SEC FTP Security Considerations 2577*
-------- 6Bone Routing Practice 2546*
DNS-SOC DNS Security Operational Considerations 2541*
-------- Internet X.509 Public Key Infrastructure KEA 2528*
-------- Internet X.509 Public Key Infrastructure CP & CPF 2527*
-------- Known TCP Implementation Problems 2525*
EMSD Neda's Efficient Mail Submission and Delivery Protocol 2524*
IDRA Framework for Inter-Domain Route Aggregation 2519*
PPPOE Method for Transmitting PPP Over Ethernet 2516*
-------- MIME Types for Use with the ISO ILL Protocol 2503*
MANET Mobile Ad hoc Networking Performance Issues 2501*
-------- ST2+ over ATM Protocol Spec - UNI 3.1 Version 2383
-------- Mapping Airline Reservation, Ticketing, Messaging 2351
KOI8-U Ukrainian Character Set KOI8-U 2319
TEXT-Css The text/css Media Type 2318
PKCS-7 PKCS #7: Cryptographic Message Syntax Version 1.5 2315
PKCS-10 PKCS #10: Certification Request Syntax Version 1.5 2314
PKCS-1 PKCS #1: RSA Encryption Version 1.5 2313
SMIME-CERT S/MIME Version 2 Certificate Handling 2312
SMIME-MSG S/MIME Version 2 Message Specification 2311
TIFF Tag Image File Format F Profile for Facsimile 2302
GSMP Ipsilon's General Switch Management Protocol 2297
HSRP Cisco Hot Standby Router Protocol (HSRP) 2281
RC2-ENCRP A Description of the RC2(r) Encryption Algorithm 2268
SNQP Simple Nomenclator Query Protocol 2259
-------- Japanese Character Encoding for Internet Messages 2237
KEYX-DNS Key Exchange Delegation Record for the DNS 2230
DSP A Dictionary Server Protocol 2229
NFS-URL NFS URL Scheme 2224
APP-MARC The Application/MARC Content-type 2220
ODETTE-FTP ODETTE File Transfer Protocol 2204
ESRO AT&T/Neda's Efficient Short Remote Operations Protocol 2188
ICP Internet Cache Protocol Version 2 2186
IPV4-MAPOS IPv4 over MAPOS Version 1 2176
MAPOS-SONET Multiple Access Protocol over SONET/SDH Version 1 2171
RWHOIS Referral Whois Protocol 2167
PPP-EXT PPP Vendor Extensions 2153
UTF-7 UTF-7 2152

CAST-128 CAST-128 Encryption Algorithm 2144
RADIUS-ACC RADIUS Accounting 2139
DLSCAP Data Link Switching Client Access Protocol 2114
PNG Portable Network Graphics Version 1.0 2083
RC5 RC5, RC5-CBC, RC5-CBC-Pad, and RC5-CTS Algorithms 2040
SNTP Simple Network Time Protocol v4 for IPv4, IPv6 and OSI 2030
PGP-MEF PGP Message Exchange Formats 1991
PPP-DEFL PPP Deflate Protocol 1979
PPP-PRED PPP Predictor Compression Protocol 1978
PPP-BSD PPP BSD Compression Protocol 1977
PPP-DCE PPP for Data Compression in DCE 1976
PPP-MAG PPP Magnalink Variable Resource Compression 1975
PPP-STAC PPP Stac LZS Compression Protocol 1974
GZIP GZIP File Format Specification Version 4.3 1952
DEFLATE DEFLATE Compressed Data Format Specification V. 1.3 1951
ZLIB ZLIB Compressed Data Format Specification V. 3.3 1950
HTTP-1.0 Hypertext Transfer Protocol -- HTTP/1.0 1945
-------- text/enriched MIME Content-type 1896
-------- Application/CALS-1840 Content-type 1895
-------- PPP IPCP Extensions for Name Server Addresses 1877
SNPP Simple Network Paging Protocol - Version 2 1861
-------- ISO Transport Class 2 Non-use Explicit Flow Control 1859
over TCP RFC1006 extension
-------- IP in IP Tunneling 1853
-------- PPP Network Control Protocol for LAN Extension 1841
TESS The Exponential Security System 1824
NFSV3 NFS Version 3 Protocol Specification 1813
-------- A Format for Bibliographic Records 1807
------- Data Link Switching: Switch-to-Switch Protocol 1795
BGP-4 Experience with the BGP-4 Protocol 1773
SDMD IPv4 Option for Sender Directed MD Delivery 1770
SNOOP Snoop Version 2 Packet Capture File Format 1761
BINHEX MIME Content Type for BinHex Encoded Files 1741
DNS-NSAP DNS NSAP Resource Records 1706
RADIO-PAGE TPC.INT Subdomain: Radio Paging -- Technical Procedures 1703
GRE-IPv4 Generic Routing Encapsulation over IPv4 1702
GRE Generic Routing Encapsulatio 1701
ADSNA-IP Advanced SNA/IP: A Simple SNA Transport Protocol 1538
TACACS Terminal Access Control Protocol 1492
MD4 MD4 Message Digest Algorithm 1320
SUN-NFS Network File System Protocol 1094
SUN-RPC Remote Procedure Call Protocol Version 2 1057
GOPHER The Internet Gopher Protocol 1436
LISTSERV Listserv Distribute Protocol 1429
------- Replication Requirements 1275
PCMAIL Pcmail Transport Protocol 1056
MTP Multicast Transport Protocol 1301
BSD Login BSD Login 1282

DIXIE DIXIE Protocol Specification 1249
IP-X.121 IP to X.121 Address Mapping for DDN 1236
OSI-HYPER OSI and LLC1 on HYPERchannel 1223
HAP2 Host Access Protocol 1221
SUBNETASGN On the Assignment of Subnet Numbers 1219
SNMP-TRAPS Defining Traps for use with SNMP 1215
DAS Directory Assistance Service 1202
LPDP Line Printer Daemon Protocol 1179

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

4.2. Historic Protocols

Protocol Name RFCSTD
======== ===================================== ===== ===
CONTENT Content Type Header Field 1049 11 *
IPV6-UNI IPv6 Provider-Based Unicast Address 2073
IPV6-Addr IPv6 Addressing Architecture 1884
L2F Cisco Layer Two Forwarding Protocol 2341
IPSO DoD Security Options for IP 1108
SNMPv2 Manager-to-Manager MIB 1451
SNMPv2 Party MIB for SNMPv2 1447
SNMPv2 Security Protocols for SNMPv2 1446
SNMPv2 Administrative Model for SNMPv2 1445
RIP Routing Information Protocol 1058 34
-------- Mapping full 822 to Restricted 822 1137
BGP3 Border Gateway Protocol 3 (BGP-3) 1267,1268
-------- Gateway Requirements 1009 4
EGP Exterior Gateway Protocol 904 18
SNMP-MUX SNMP MUX Protocol and MIB 1227
OIM-MIB-II OSI Internet Management: MIB-II 1214
IMAP3 Interactive Mail Access Protocol Version 3 1203
SUN-RPC Remote Procedure Call Protocol Version 1 1050
802.4-MIP IEEE 802.4 Token Bus MIB 1230
CMOT Common Management Information Services 1189
-------- Mail Privacy: Procedures 1113
-------- Mail Privacy: Key Management 1114
-------- Mail Privacy: Algorithms 1115
NFILE A File Access Protocol 1037
HOSTNAME HOSTNAME Protocol 953
SFTP Simple File Transfer Protocol 913
SUPDUP SUPDUP Protocol 734
BGP Border Gateway Protocol 1163,1164
MIB-I MIB-I 1156
TOPT-ENVIR Telnet Environment Option 1408
SGMP Simple Gateway Monitoring Protocol 1028
HEMS High Level Entity Management Protocol 1021

STATSRV Statistics Server 996
POP2 Post Office Protocol, Version 2 937
RATP Reliable Asynchronous Transfer Protocol 916
HFEP Host - Front End Protocol 929
THINWIRE Thinwire Protocol 914
HMP Host Monitoring Protocol 869
GGP Gateway Gateway Protocol 823
RTELNET Remote Telnet Service 818
CLOCK DCNET Time Server Protocol 778
MPM Internet Message Protocol 759
NETRJS Remote Job Service 740
TOPT-OLD Output Linefeed Disposition 658
TOPT-OVTD Output Vertical Tab Disposition 657
TOPT-OVT Output Vertical Tabstops 656
TOPT-OFD Output Formfeed Disposition 655
TOPT-OHTD Output Horizontal Tab Disposition 654
TOPT-OHT Output Horizontal Tabstops 653
TOPT-OCRD Output Carriage-Return Disposition 652
NETED Network Standard Text Editor 569
RJE Remote Job Entry 407
XNET Cross Net Debugger IEN-158
NAMESERVER Host Name Server Protocol IEN-116
MUX Multiplexing Protocol IEN-90
GRAPHICS Graphics Protocol NIC-24308

[Note: an asterisk at the end of a line indicates a change from the
previous edition of this document.]

5. Contacts

5.1. IAB, IETF, and IRTF Contacts

Internet Architecture Board (IAB) Contact: www.iab.org

Internet Engineering Task Force (IETF) Contact: www.ietf.org

Internet Research Task Force (IRTF) Contact: www.irtf.org

5.2. Internet Assigned Numbers Authority Contact

See: www.iana.org

How to obtain the most recent edition of this "Internet Official
Protocol Standards" memo:

The file "in-notes/std/std1.txt" may be copied via FTP from the
FTP.ISI.EDU computer using the FTP username "anonymous" and FTP
password "guest".

5.3. Request for Comments Editor Contact

See: www.rfc-editor.org

Documents may be submitted via electronic mail to the RFCEditor for
consideration for publication as RFC. If you are not familiar with
the format or style requirements please request the "Instructions for
RFCAuthors". In general, the style of any recent RFCmay be used as
a guide.

5.4. Requests for Comments Distribution Contact

RFCs can be obtained via FTP from FTP.ISI.EDU, with the pathname in-
notes/rfcnnnn.txt (where "nnnn" refers to the number of the RFC).
Login with FTP username "anonymous" and password "name@host.domain".

RFCs can also be obtained via electronic mail from ISI.EDU by using
the RFC-INFO service. Address the request to "rfc-info@isi.edu" with
a message body of:

Retrieve: RFC
Doc-ID: RFCnnnn

(Where "nnnn" refers to the number of the RFC(always use 4 digits -
the DOC-ID of RFC822 is "RFC0822")). The RFC-INFO@ISI.EDU server
provides other ways of selecting RFCs based on keywords and such; for
more information send a message to "rfc-info@isi.edu" with the
message body "help: help".

contact: RFC-Manager@ISI.EDU

5.5. Sources for Requests for Comments

Details on many sources of RFCs via FTP or EMAIL may be obtained by
sending an EMAIL message to "rfc-info@ISI.EDU" with the message body
"help: ways_to_get_rfcs". For example:

To: rfc-info@ISI.EDU
Subject: getting rfcs

help: ways_to_get_rfcs

6. Security Considerations

This memo does not affect the technical security of the Internet, but
it does cite a number of important security specifications.

7. Editors' Addresses

Joyce K. Reynolds
USC/Information Sciences Institute
4676 Admiralty Way
Marina del Rey, CA 90292

Phone: +1 310-822-1511
Fax: +1 310-823-6714

EMail: JKRey@ISI.EDU

Robert Braden
USC/Information Sciences Institute
4676 Admiralty Way
Marina del Rey, CA 90292

Phone: +1 310-822-1511
Fax: +1 310-823-6714

EMail: Braden@ISI.EDU

Full Copyright Statement

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included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
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This document and the information contained herein is provided on an
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