[tcpm] TCP options - tcp-parameters IANA registry
Alfred Hönes <ah@tr-sys.de> Wed, 14 November 2007 22:58 UTC
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From: Alfred Hönes <ah@tr-sys.de>
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Date: Wed, 14 Nov 2007 23:57:42 +0100
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Subject: [tcpm] TCP options - tcp-parameters IANA registry
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Hello all, there are currently several proposals for new TCP options. It has turned out onerous to get an overview of the TCP options defined in the past, because the IANA 'tcp-parameters' registry had not seen any additions until recently, for more than a decade, and has not been maintained as carefully as might be desirable, and because there are some apparently very obscure entries. I have perceived the desire to build a more sound foundation for my understanding of the issues related with those old and proposed TCP options. To this end, I have tried to perform a survey of the non-RFC IANA-registered TCP options, by sending out a questionnary to personal registrants last January, and I have tried to collect and condense information contained in RFCs, and from the distributed wisdom of the net. I'd like to acknowledge the efforts of those individuals who have assisted my attempts to get in contact with the owners of legacy registrations, and who have taken the time to fill in the questionnary and to supply additional information. Due to lack of spare time and a rather small rate of feedback I eventually arrived at for the survey, it took me until now to prepare an updated, corrected, amended, and annotated version of the latest IANA 'tcp-parameters' file. I hope that sharing this information with the list will help to o complete the information, and o serve as a solid base of additional information for ongoing and starting discussions on various issues related to (existing and) newly proposed TCP options. Furthermore, I'm interested to hear whether it might make sense to start an 'authorized' effort to improve and update the 'tcp-parameters' IANA registry, incorporating some of the changes I have performed on my local copy. Currently, an update to the IANA Considerations for the 'protocols' registry is submitted (from within and) to the IESG for publication as an RFC, and a similar effort is being discussed for the 'port-numbers' registry as well. This therefore might be a good opportunity for a cleanup of the 'tcp-parameters' registry as well, closing the gaps and facelifting the file. I have enclosed as an attachment my current working copy of that registry file, including `==>` tagged lines pointing to specific solicitations for additional information. For informational purposes, I have also left therein a few traces of the history of the file, as recovered from local backup media. Please send comments to the list or in private communication, as deemed useful. I will honor requests for non-disclosure of information sources and/or details received in personal communication, and will try to update the working copy based on feedback received, in a neutral and abstract way -- following the style you'll already find there currently. ( see attached file: annotated_tcp-parameters.20070216 ) Kind regards, Alfred. -- +------------------------+--------------------------------------------+ | TR-Sys Alfred Hoenes | Alfred Hoenes Dipl.-Math., Dipl.-Phys. | | Gerlinger Strasse 12 | Phone: (+49)7156/9635-0, Fax: -18 | | D-71254 Ditzingen | E-Mail: ah@TR-Sys.de | +------------------------+--------------------------------------------+
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- [tcpm] TCP options - tcp-parameters IANA registry Alfred Hönes