RFC 1100

IAB official protocol standards

πŸ“… published April 1989, from ietf

RFC 1100: IAB Official Protocol Standards πŸŽ€

okay bestie, this is RFC 1100 and it's the IAB's official "which protocols are standards right now" memo πŸ’…

It's from the Network Working Group, written by the Internet Activities Board (IAB), and dated April 1989 πŸ“…. It obsoletes RFC 1083 πŸ¦‹, so 1083 is retired and this is the one to use now.

Status of this Memo

okay so this memo explains where each protocol is in standardization, as decided by the IAB 🧚. It goes: an overview of the standards procedures first, then the standardization process and the RFC document series, then what the terms mean, then the lists of protocols at each stage, and finally pointers to references and contacts.

It gets issued quarterly, so make sure the copy you're reading is dated within the last three months πŸ—“οΈ. You can grab current copies from the Network Information Center or from the Internet Assigned Numbers Authority (the contact info is at the end of the memo). And, very important, do not use this memo after 31-July-89 πŸ’€.

Distribution of this memo is unlimited 🌈.


1. Overview of Standards Procedures ✨

The Internet Activities Board keeps a list of documents that define standards for the Internet protocol suite πŸ“œ. It sets these standards to co-ordinate how the Internet protocols evolve, and that co-ordination matters a LOT now that the protocols are used in general commercial settings πŸ’Ό.

Anyone in the Internet community can propose a protocol standard, just by writing an RFC and submitting it πŸ¦‹. Usually a proposed protocol gets reviewed or developed inside some Task Force of the IAB, or a working group within that Task Force. The IAB will assign a proposed protocol to a working group if official delegation is needed 🫢.

The working group's or task force's recommendation gets major consideration when the IAB decides what state and status a protocol gets πŸ‘‘. The general policy is not to make a protocol an official standard until it has implementation experience behind it πŸ”₯.

When it's unclear what the right call is for a protocol, the IAB may set up a special review committee. It's made of interested people from the working group plus IAB members, and its job is to recommend an explicit action to the IAB 🧐.

Widespread implementation of a standard can happen without the IAB's approval πŸ™ˆ. Some vendor standards are super important to the Internet community even though the IAB never proposed or reviewed them. Still, the IAB strongly recommends using the IAB standards process to evolve the protocol suite, so you get maximum interoperability and nobody ends up with incompatible protocol requirements πŸ’–. The IAB also reserves the use of the term "standard" in any RFC for only the protocols the IAB has approved ✨.

2. The Standardization Process

Anyone can invent a protocol, document it, implement it, test it, and so on 🌸. The IAB thinks it's really useful to document a protocol early, so people interested in the functionality of the protocol, and people interested in protocol design, can make suggestions πŸ’…. Once a protocol is implemented and tested, it's useful to report the results too. The RFC document series is the preferred place to publish these protocol documents and testing results πŸ“š.

The IAB encourages documenting every protocol developed in the Internet (that means publishing the protocol specification as an RFC), even if it's never meant to become an Internet standard 🫢. A protocol that isn't meant to become a standard is called "experimental" πŸ§ͺ.

Protocols that are meant to become standards start out as "proposed" protocols 🌱. While they're in this state, it's expected that several groups will implement and test them. It's likely an improved version of the protocol will come out of this πŸ”.

Once a proposed protocol is stable and has a sponsor (an individual willing to speak for the protocol to the IAB), it can move up to the "draft standard" state πŸŽ€. In this state, it should be reviewed by the entire Internet community. Draft standard basically tells everyone: unless someone objects or finds a flaw, this protocol will become a "standard" πŸ“£.

Once a protocol has been a draft standard for long enough (usually 6 months) without serious objections, the IAB may act to declare it an official Internet standard πŸ‘‘.

Some protocols get superseded by better ones, or are otherwise unused. Those get labelled "historic" πŸ•°οΈ.

On top of a state (like proposed or standard), a protocol also gets a status 🧩. A protocol can be required, which means all systems in the Internet must implement it. For example, the Internet Protocol (IP) is required 🌐. A protocol may be recommended, meaning systems should implement it πŸ’œ. A protocol may be elective, meaning systems may implement it. Here's the catch: if (and only if) a system needs or finds the functionality of this protocol useful, it must use this protocol to provide that functionality πŸ™ˆ. A protocol may be termed not recommended if it isn't meant to be generally implemented, like experimental or historic protocols 🚫.

Very few protocols are required in all systems, because there's SO much variety in systems. Think gateways, terminal servers, workstations, and multi-user hosts πŸ–₯️. A gateway doesn't have to implement TCP and the protocols that use TCP (though it may be useful). General purpose hosts are expected to implement at least IP (including ICMP), TCP and UDP, Telnet, FTP, SMTP, Mail, and the Domain Name System (DNS) πŸŽ€.

3. The Request for Comments Documents

RFCs (Request for Comments) are the working notes of the Internet research and development community πŸ“. A document in this series can be about pretty much any topic related to computer communication, from a meeting report all the way to the specification of a standard. All standards get published as RFCs, but not all RFCs specify standards 🌈.

Anyone can submit a document for publication as an RFC πŸ’Œ. Submissions have to be sent by electronic mail to the RFC Editor (contact info is at the end of this memo) πŸ“§.

RFCs aren't refereed publications, but they do get technical review from the task forces, individual technical experts, or the RFC Editor, depending on what's appropriate ✨.

Once a document gets an RFC number and is published, that RFC is never revised or re-issued with the same number πŸ”’. So there's never a question about having the most recent version of a particular RFC. But a protocol (like File Transfer Protocol (FTP)) can be improved and re-documented many times across different RFCs πŸ”. That's why it's important to check you've got the most recent RFC on a particular protocol πŸ•΅οΈβ€β™€οΈ. This "IAB Official Protocol Standards" memo is the reference for figuring out the correct RFC to look at for the current specification of each protocol πŸ‘‘.

The RFCs are available from the Network Information Center at SRI International. For more info on getting RFCs, check the contact information at the end of this memo πŸ“¬.

4. Other Reference Documents

There are four other reference documents worth knowing about when you're checking the current status of protocol specifications and standardization πŸ“š. They're the Assigned Numbers, the Official Protocols, the Gateway Requirements, and the Host Requirements. These get revised and updated at different times, so if they ever disagree, the most recent one must prevail πŸ•°οΈ.

Also, be aware of the MIL-STD publications on IP, TCP, Telnet, FTP, and SMTP πŸͺ–. They're described in section 4.5.

4.1. Assigned Numbers

This document lists the assigned values of the parameters used in the various protocols πŸ”’. Examples are IP protocol codes, TCP port numbers, Telnet Option Codes, ARP hardware types, and Terminal Type names 🧾. Assigned Numbers was most recently issued as RFC-1010 πŸŽ€.

Another document, Internet Numbers, lists the assigned IP network numbers and the autonomous system numbers 🌐. Internet Numbers was most recently issued as RFC-1062 ✨.

4.2. Official Protocols

This document lists the protocols and describes any known problems and ongoing experiments πŸ§ͺ. Official Protocols was recently issued as RFC-1011 πŸ’….

4.3. Gateway Requirements

This document reviews the specifications that apply to gateways and gives guidance and clarification for any ambiguities πŸšͺ. Gateway Requirements was recently issued as RFC-1009 πŸ¦‹.

4.4. Host Requirements

This document reviews the specifications that apply to hosts and gives guidance and clarification for any ambiguities πŸ–₯️. Host Requirements is in preparation and will be issued soon ⏳.

4.5. The MIL-STD Documents

The Internet community specifications for IP (RFC-791) and TCP (RFC-793), and the DoD MIL-STD specifications, are meant to describe exactly the same protocols 🀝. Any difference in the protocols these sets of documents specify should be reported to DCA and to the IAB 🚨. The RFCs and the MIL-STDs for IP and TCP differ in style and level of detail, so it's strongly advised to use the two sets of documents together πŸ’œ.

The IAB and DoD MIL-STD specifications for FTP, SMTP, and Telnet are basically the same documents (RFCs 765, 821, 854) πŸ‘―. The MIL-STD versions have been edited slightly. And the current Internet specification for FTP is RFC-959 πŸŽ€.

Here's the MIL-STD lineup πŸͺ–:

      Internet Protocol (IP)                      MIL-STD-1777
      Transmission Control Protocol (TCP)         MIL-STD-1778
      File Transfer Protocol (FTP)                MIL-STD-1780
      Simple Mail Transfer Protocol (SMTP)        MIL-STD-1781
      Telnet Protocol and Options (TELNET)        MIL-STD-1782

5. Explanation of Terms ✨

Okay so bestie, protocols get sorted into two totally separate categories, and I need you to hold both in your head at once πŸ§ πŸ’œ. The first one is the state of standardization: it's either "standard", "draft standard", "proposed", "experimental", or "historic". The second one is the status of the protocol: "required", "recommended", "elective", or "not recommended". It's giving two separate ladders. You could totally expect a protocol to climb the status ladder from elective up to required at the same time it climbs the standardization ladder from proposed up to standard πŸͺœπŸŒΈ.

At any given time, a protocol lives in exactly one cell of this matrix πŸ¦‹. The Xs show roughly how the protocols are spread out (more Xs means more of them live there). Most of them chill on the main diagonal. A brand-new protocol is most likely to start out in the (proposed, elective) cell, or the (experimental, not recommended) cell. Iconic beginnings, honestly 🌱.

                     Req   Rec   Ele   Not
                   +-----+-----+-----+-----+
           Std     | XXX |  XX |  X  |     |
                   +-----+-----+-----+-----+
           Draft   |     |  X  |  XX |     |
                   +-----+-----+-----+-----+
           Prop    |     |     | XXX |  X  |
                   +-----+-----+-----+-----+
           Expr    |     |     |  X  | XXX |
                   +-----+-----+-----+-----+
           Hist    |     |     |     | XXX |
                   +-----+-----+-----+-----+

Some protocols are only for hosts, some are only for gateways, and a few are used by both πŸ–₯οΈπŸŒ‰. In this doc, the word "system" means a host or a gateway (or both), and it SHOULD be clear from the context which kind of system a protocol is talking about. Use your vibes, babe 🫢.

5.1. Definitions

5.1.1. Standard Protocol

The IAB has officially made this an official standard protocol for the Internet πŸ‘‘. There are two groups here: (1) IP protocol and above, which are the protocols that apply to the whole Internet, and (2) network-specific protocols, which are basically specs for how to do IP on particular types of networks 🌐.

5.1.2. Draft Standard Protocol

The IAB is actively looking at this protocol as a possible Standard Protocol πŸ‘€. Substantial and widespread testing and comment is desired, so go test it and tell them what you think πŸ§ͺ. Comments and test results SHOULD be sent to the IAB. There's a real possibility that changes get made to a Draft Standard Protocol before it becomes a Standard Protocol, so it's not finished yet, bestie 🚧.

5.1.3. Proposed Protocol

These are protocol proposals that MAY be considered by the IAB for standardization down the road ✨. Implementation and testing by several groups is desirable πŸ™Œ. Revisions to the protocol spec are likely, so don't get too attached to the first draft πŸ’….

5.1.4. Experimental Protocol

A system SHOULD NOT implement an experimental protocol unless it's taking part in the experiment and has coordinated its use of the protocol with whoever developed it πŸ§ͺ🚫. Main character rule: ask first πŸ™ˆ.

Typically, experimental protocols come out of a specific ongoing research project that isn't tied to an operational service offering πŸ”¬. They MAY be proposed as a service protocol later on, and then they can climb up through proposed, draft, and finally standard πŸͺœ. The experimental label is there to say that the protocol, even if it's pretty mature, is not intended for operational use 🚫🏭.

5.1.5. Historic Protocol

These are protocols that are unlikely to ever become Internet standards, either because something better came along and superseded them, or because nobody's into them anymore πŸ₯€. They're at an evolutionary dead end, bestie πŸ¦–.

5.1.6. Required Protocol

All systems MUST implement the required protocols πŸ”’. No exceptions, no cap πŸ’€.

All systems SHOULD implement the recommended protocols πŸ’–. It's really the move, so do it πŸ’….

5.1.8. Elective Protocol

A system MAY or MAY NOT implement an elective protocol πŸŽ€. The big idea is: if you're going to do something like this, you MUST do exactly this. Be precise or don't do it at all πŸ’…πŸ“.

These protocols are not recommended for general use πŸ™…β€β™€οΈ. That MAY be because of their limited functionality, their specialized nature, or because they're experimental or historic πŸ•°οΈ. Not the vibe for everyday life, bestie.


6. The Protocols 🌈

6.1. Standard Protocols

Here's the lineup of standard protocols πŸ“‹πŸ’œ. Keep your eyes on the Status column, it's where the drama is πŸ‘€.

Protocol   Name                                      Status          RFC
--------   ----                                      ------          ---
           Assigned Numbers                          Required       1010
           Gateway Requirements                      Required       1009
IP         Internet Protocol                         Required        791
            as amended by:
             IP Subnet Extension                     Required        950
             IP Broadcast Datagrams                  Required        919
             IP Broadcast Datagrams with Subnets     Required        922
ICMP       Internet Control Message Protocol         Required        792
UDP        User Datagram Protocol                    Recommended     768
TCP        Transmission Control Protocol             Recommended     793
DOMAIN     Domain Name System                     Recommended  1034,1035
TELNET     Telnet Protocol                           Recommended     854
FTP        File Transfer Protocol                    Recommended     959
SMTP       Simple Mail Transfer Protocol             Recommended     821
MAIL       Format of Electronic Mail Messages        Recommended     822
EGP        Exterior Gateway Protocol                 Recommended     904
NETBIOS    NetBIOS Service Protocols                 Elective  1001,1002
ECHO       Echo Protocol                             Recommended     862
DISCARD    Discard Protocol                          Elective        863
CHARGEN    Character Generator Protocol              Elective        864
QUOTE      Quote of the Day Protocol                 Elective        865
USERS      Active Users Protocol                     Elective        866
DAYTIME    Daytime Protocol                          Elective        867
TIME       Time Server Protocol                      Elective        868

6.2. Specific Standard Protocols

These are the network-specific standard protocols πŸŒπŸ¦‹. Here's the table:

Protocol   Name                                     Status           RFC
--------   ----                                     ------           ---
ARP        Address Resolution Protocol              Elective         826
RARP       A Reverse Address Resolution Protocol    Elective         903
IP-ARPA    Internet Protocol on ARPANET             Elective    BBN 1822
IP-WB      Internet Protocol on Wideband Network    Elective         907
IP-X25     Internet Protocol on X.25 Networks       Elective         877
IP-E       Internet Protocol on Ethernet Networks   Elective         894
IP-EE      Internet Protocol on Exp. Ethernet Nets  Elective         895
IP-IEEE    Internet Protocol on IEEE 802            Elective        1042
IP-DC      Internet Protocol on DC Networks         Elective         891
IP-HC      Internet Protocol on Hyperchannnel       Elective        1044
IP-ARC     Internet Protocol on ARCNET              Elective        1051
IP-SLIP    Transmission of IP over Serial Lines     Elective        1055
IP-NETBIOS Transmission of IP over NETBIOS          Elective        1088

Now the important bit πŸ“£. A system is expected to support one or more physical networks, and for each physical network it supports, the matching protocols from the list above MUST be supported πŸ”Œ. So it's totally elective to support any particular type of physical network πŸ’…. But for the physical networks you actually do support, it is REQUIRED that they be supported exactly according to the protocols in the list above πŸ”’βœ¨.

6.3. Draft Standard Protocols

Here are the protocols that are still in draft standard territory πŸ› οΈπŸ“.

Protocol   Name                                     Status           RFC
--------   ----                                     ------           ---
SNMP       Simple Network Management Protocol       Recommended     1098
CMOT       Common Management Information Services   Recommended     1095
           and Protocol over TCP/IP
MIB        Management Information Base              Recommended     1066
SMI        Structure of Management Information      Recommended     1065
NTP        Network Time Protocol                    Elective        1059
IGMP       Internet Group Multicast Protocol        Recommended     1054
BOOTP      Bootstrap Protocol                  Recommended 951,1048,1084

Okay, the network management drama 🎭. The Internet Activities Board gave two different network management protocols the same status: "Draft Standard" and "Recommended" πŸ‘―β€β™€οΈ. Those two are the Common Management Information Services and Protocol over TCP/IP (CMOT) [RFC-1095] and the Simple Network Management Protocol (SNMP) [RFC-1098] πŸ–§. The IAB wants both of them to get lots of attention from implementers and experimenters πŸ”, and it's actively asking system builders and users to share their experience with these two protocols πŸ“¬.

The IAB also recommends that all IP and TCP implementations be network manageable, for example by implementing the Internet MIB [RFC-1066] 🧩. And implementations that are network manageable are expected to adopt and implement at least one of these two Internet Draft Standards 🫢🌸.

6.4. Proposed Protocols

Last but not least, here are the proposed protocols 🌱✨. Every single one of these is elective.

Protocol   Name                                     Status           RFC
--------   ----                                     ------           ---
SUN-NFS    Network File System Protocol             Elective        1094
POP3       Post Office Protocol, Version 3          Elective   1081,1082
RIP        Routing Information Protocol             Elective        1058
SUN-RPC    Remote Procedure Call Protocol           Elective        1057
PCMAIL     Pcmail Transport Protocol                Elective        1056
VMTP       Versatile Message Transaction Protocol   Elective        1045
NFILE      A File Access Protocol                   Elective        1037
           Mapping between X.400 and RFC-822        Elective    987,1026
STATSRV    Statistics Server                        Elective         996
NNTP       Network News Transfer Protocol           Elective         977
NICNAME    WhoIs Protocol                           Elective         954
HOSTNAME   HOSTNAME Protocol                        Elective         953
POP2       Post Office Protocol, Version 2          Elective         937
SFTP       Simple File Transfer Protocol            Elective         913
RLP        Resource Location Protocol               Elective         887
RTELNET    Remote Telnet Service                    Elective         818
TFTP       Trivial File Transfer Protocol           Elective         783
FINGER     Finger Protocol                          Elective         742
SUPDUP     SUPDUP Protocol                          Elective         734
NETED      Network Standard Text Editor             Elective         569
RJE        Remote Job Entry                         Elective         407

6.5. Experimental Protocols πŸ§ͺ

Okay bestie, the experimental list is up next, and every single row here is marked Not Recommended πŸ’… (no cap, that's a lot of protocols to be not-recommending πŸ’€).

Protocol   Name                                     Status           RFC
--------   ----                                     ------           ---
IP-DVMRP   IP Distance Vector Multicast Routing     Not Recommended 1075
IP-MTU     IP MTU Discovery Options                 Not Recommended 1063
NETBLT     Bulk Data Transfer Protocol              Not Recommended  998
IMAP2      Interactive Mail Access Protocol         Not Recommended 1064
COOKIE-JAR Authentication Scheme                    Not Recommended 1004
IRTP       Internet Reliable Transaction Protocol   Not Recommended  938
AUTH       Authentication Service                   Not Recommended  931
RATP       Reliable Asynchronous Transfer Protocol  Not Recommended  916
THINWIRE   Thinwire Protocol                        Not Recommended  914
LDP        Loader Debugger Protocol                 Not Recommended  909
RDP        Reliable Data Protocol                   Not Recommended  908
ST         Stream Protocol                       Not Recommended IEN 119
NVP-II     Network Voice Protocol               Not Recommended ISI memo

6.6. Historic Protocols πŸ•°οΈ

Now the history corner πŸ›οΈ These are the blasts from the past, and a couple of them are marked Elective 🌸.

Protocol   Name                                     Status           RFC
--------   ----                                     ------           ---
SGMP       Simple Gateway Monitoring Protocol       Not Recommended 1028
HEMS       High Level Entity Management Protocol    Not Recommended 1021
HMP        Host Monitoring Protocol                 Not Recommended  869
GGP        Gateway Gateway Protocol                 Not Recommended  823
CLOCK      DCNET Time Server Protocol               Not Recommended  778
MPM        Internet Message Protocol                Not Recommended  759
NETRJS     Remote Job Service                       Elective         740
XNET       Cross Net Debugger                       Elective     IEN 158
NAMESERVER Host Name Server Protocol             Not Recommended IEN 116
MUX        Multiplexing Protocol                 Not Recommended IEN  90
GRAPHICS   Graphics Protocol                  Not Recommended  NIC 24308

7. Contacts πŸ’Œ

7.1. Internet Activities Board Contact πŸŽ€

Here's who to reach at the Internet Activities Board:

   Contact:

         Jon Postel
         Deputy Internet Architect
         USC Information Sciences Institute
         4676 Admiralty Way
         Marina del Rey, CA  90292-6695

         1-213-822-1511

         Postel@ISI.EDU

Got thoughts on this list of protocols, especially the Draft Standard Protocols? Send them to the Internet Activities Board, care of the Deputy Internet Architect πŸ’–

7.2. Internet Assigned Numbers Authority Contact πŸ”’

   Contact:

         Joyce K. Reynolds
         Internet Assigned Numbers Authority
         USC Information Sciences Institute
         4676 Admiralty Way
         Marina del Rey, CA  90292-6695

         1-213-822-1511

         JKRey@ISI.EDU

The protocol standards are managed for the IAB by the Internet Assigned Numbers Authority 🫢

For more on the status of protocol documents, check out "Assigned Numbers" (RFC-1010) and "Official Internet Protocols" (RFC-1011). There are also two docs that sum up the requirements for hosts and gateways on the Internet: "Host Requirements" (RFC in preparation) and "Gateway Requirements" (RFC-1009) ✨

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

The file in-notes/iab-standards.txt may be copied via FTP from the VENERA.ISI.EDU computer using the FTP username anonymous and FTP password guest. πŸ“

7.3. Request for Comments Editor Contact πŸ“

   Contact:

         Jon Postel
         RFC Editor
         USC Information Sciences Institute
         4676 Admiralty Way
         Marina del Rey, CA  90292-6695

         1-213-822-1511

         Postel@ISI.EDU

Want to get a document published as an RFC? You can email it to the RFC Editor πŸ¦‹ If the format or style stuff feels confusing, ask for the "Instructions for RFC Authors". In general, the style of any recent RFC may be used as a guide πŸ’œ

7.4. The Network Information Center and Requests for Comments Contact πŸ“š

   Contact:

         SRI International
         DDN Network Information Center
         333 Ravenswood Avenue
         Menlo Park, CA  94025

         1-800-235-3155
         1-415-859-3695

         NIC@SRI-NIC.ARPA

The Network Information Center (NIC) is the one-stop shop for a bunch of Internet information services. One of its big jobs is maintaining the Requests for Comments (RFC) library πŸ‘‘

RFCs can be grabbed via FTP from SRI-NIC.ARPA with the pathname RFC:RFCnnnn.TXT, where "nnnn" is the number of the RFC. Want a list of all RFCs? Copy the file RFC:RFC-INDEX.TXT. Log in with FTP username ANONYMOUS and password GUEST 🌈

Sites that can't use FTP can still get RFCs by email. Address the request to SERVICE@SRI-NIC.ARPA and put the RFC number in the subject field, like Subject: RFC nnnn πŸ’Œ

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

The file RFC:IAB-STANDARDS.TXT may be copied via FTP from the SRI-NIC.ARPA computer, following the same procedures used to obtain RFCs. ⭐

Author's Address:

   Jon Postel
   USC/Information Sciences Institute
   4676 Admiralty Way
   Marina del Rey, CA 90292

   Phone: (213) 822-1511

   Email: Postel@ISI.EDU
πŸ“¦ where this page comes from