Delay-Tolerant Networking                                       B. Sipos
Internet-Draft                                                   JHU/APL
Updates: 9171 (if approved)                            12 September 2022
Intended status: Standards Track
Expires: 16 March 2023


     Bundle Protocol Version 7 Administrative Record Types Registry
                   draft-sipos-dtn-bpv7-admin-iana-02

Abstract

   This document clarifies that a Bundle Protocol Version 7 agent is
   intended to use an IANA sub-registry for Administrative Record types.
   It also makes a code point reservation for private or experimental
   use.

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   This Internet-Draft will expire on 16 March 2023.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Scope . . . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Administrative Record Types Registry  . . . . . . . . . . . .   3
   3.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
     4.1.  Bundle Administrative Record Types  . . . . . . . . . . .   3
   5.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     5.1.  Normative References  . . . . . . . . . . . . . . . . . .   4
     5.2.  Informative References  . . . . . . . . . . . . . . . . .   5
   Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . .   5
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   The earlier Bundle Protocol (BP) Version 6 (BPv6) defined an IANA
   sub-registry for Administrative Record type code points under
   [IANA-BP].  When Bundle Protocol Version 7 (BPv7) was published in
   [RFC9171] it included an explicit table of Administrative Record
   types but made no mention of an IANA registry nor a requirement for
   BPv7 agents to be extensible in how they handle Administrative Record
   types.  The BPv7 specification also did not discriminate between code
   point reservations and unassigned ranges for Administrative Record
   types.

   This document updates BPv7 to explicitly use the IANA Administrative
   Record type registry in Section 2.  This document makes a reservation
   of the zero value for consistency with BPv6.  This document also
   makes a reservation of high-valued code points for private or
   experimental use to avoid collisions with assigned code points.

1.1.  Scope

   This document describes updates to the IANA Administrative Record
   type sub-registry and how a BPv7 agent is supposed to use that
   registry for identifying Administrative Record types.

   This document does not specify how BPv6 and BPv7 can interoperate for
   overlapping code points or how a specific code point is to be
   interpreted either similarly or differently between Bundle Protocol
   versions.  It is up to each individual Administrative Record type
   specification to define how it relates to each BP version.







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1.2.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

2.  Administrative Record Types Registry

   This document updates the requirements in Section 6.1 of [RFC9171] to
   use an existing IANA registry and updates that sub-registry in
   Section 4.1.

   The code point allocated in Annex D of [CCSDS-BP] was never added to
   the IANA registry.  To avoid a collision, this document adds that
   allocation to the registry.

   Instead of using the explicit list of types in Table 3 of [RFC9171],
   a BPv7 Agent SHALL interpret Administrative Record type code values
   in accordance with the IANA "Bundle Administrative Record Types" sub-
   registry under [IANA-BP] for entries having a "Bundle Protocol
   Version" of 7.

3.  Security Considerations

   This document does not define any requirements or structures which
   introduce new security considerations.

   The existing security considerations of [RFC9171] still apply when
   using the IANA Administrative Record Types sub-registry.

4.  IANA Considerations

   This specification modifies a BPv6 sub-registry to extend BPv7.

4.1.  Bundle Administrative Record Types

   Within the "Bundle Protocol" registry [IANA-BP], the "Bundle
   Administrative Record Types" sub-registry has been updated to include
   a leftmost "Bundle Protocol Version" column.  New entries have been
   added and existing entries have been updated to have BP versions as
   in the following table.








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   +=================+============+==================+=================+
   | Bundle Protocol | Value      | Description      | Reference       |
   | Version         |            |                  |                 |
   +=================+============+==================+=================+
   | 6,7             | 0          | Reserved         | [RFC7116] [This |
   |                 |            |                  | specification]  |
   +-----------------+------------+------------------+-----------------+
   | 6,7             | 1          | Bundle status    | [RFC5050]       |
   |                 |            | report           | [RFC9171]       |
   +-----------------+------------+------------------+-----------------+
   | 6               | 2          | Custody signal   | [RFC5050]       |
   +-----------------+------------+------------------+-----------------+
   | 6,7             | 3          | Unassigned       |                 |
   +-----------------+------------+------------------+-----------------+
   | 6               | 4          | Aggregate        | [CCSDS-BP]      |
   |                 |            | Custody Signal   |                 |
   +-----------------+------------+------------------+-----------------+
   | 6,7             | 5-15       | Unassigned       |                 |
   +-----------------+------------+------------------+-----------------+
   | 7               | 16-65535   | Unassigned       |                 |
   +-----------------+------------+------------------+-----------------+
   | 7               | greater    | Reserved for     | [This           |
   |                 | than       | Private or       | specification]  |
   |                 | 65535      | Experimental Use |                 |
   +-----------------+------------+------------------+-----------------+

                Table 1: Bundle Administrative Record Types

5.  References

5.1.  Normative References

   [IANA-BP]  IANA, "Bundle Protocol",
              <https://www.iana.org/assignments/bundle/>.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/info/rfc2119>.

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
              May 2017, <https://www.rfc-editor.org/info/rfc8174>.

   [RFC9171]  Burleigh, S., Fall, K., Birrane, E., and III, "Bundle
              Protocol Version 7", RFC 9171, DOI 10.17487/RFC9171,
              January 2022, <https://www.rfc-editor.org/info/rfc9171>.




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5.2.  Informative References

   [CCSDS-BP] Consultative Committee for Space Data Systems, "CCSDS
              Bundle Protocol Specification", CCSDS 734.2-B-1, September
              2015, <https://www.ccsds.org>.

   [RFC5050]  Scott, K. and S. Burleigh, "Bundle Protocol
              Specification", RFC 5050, DOI 10.17487/RFC5050, November
              2007, <https://www.rfc-editor.org/info/rfc5050>.

   [RFC7116]  Scott, K. and M. Blanchet, "Licklider Transmission
              Protocol (LTP), Compressed Bundle Header Encoding (CBHE),
              and Bundle Protocol IANA Registries", RFC 7116,
              DOI 10.17487/RFC7116, February 2014,
              <https://www.rfc-editor.org/info/rfc7116>.

Acknowledgments


Author's Address

   Brian Sipos
   The Johns Hopkins University Applied Physics Laboratory
   11100 Johns Hopkins Rd.
   Laurel, MD 20723
   United States of America
   Email: brian.sipos+ietf@gmail.com
























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