Bundle Protocol Version 7
draft-ietf-dtn-bpbis-28

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Delay-Tolerant Networking Working Group                     S. Burleigh
Internet Draft                          JPL, Calif. Inst. Of Technology
Intended status: Standards Track                                K. Fall
Expires: May 3, 2021                          Roland Computing Services
                                                             E. Birrane
                                          APL, Johns Hopkins University
                                                       October 30, 2020

                         Bundle Protocol Version 7
                        draft-ietf-dtn-bpbis-28.txt

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on May 3, 2021.

Copyright Notice

   Copyright (c) 2020 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document. Please review these documents
   carefully, as they describe your rights and restrictions with
   respect to this document.  Code Components extracted from this
   document must include Simplified BSD License text as described in

Burleigh                   Expires May 2021                    [Page 1]
Internet-Draft        Bundle Protocol Version 7            October 2020

   Section 4.e of the Trust Legal Provisions and are provided without
   warranty as described in the Simplified BSD License.

Abstract

   This Internet Draft presents a specification for the Bundle
   Protocol, adapted from the experimental Bundle Protocol
   specification developed by the Delay-Tolerant Networking Research
   group of the Internet Research Task Force and documented in RFC
   5050.

Table of Contents

   1. Introduction...................................................3
   2. Conventions used in this document..............................5
   3. Service Description............................................5
      3.1. Definitions...............................................5
      3.2. Discussion of BP concepts.................................9
      3.3. Services Offered by Bundle Protocol Agents...............12
   4. Bundle Format.................................................13
      4.1. BP Fundamental Data Structures...........................14
         4.1.1. CRC Type............................................14
         4.1.2. CRC.................................................14
         4.1.3. Bundle Processing Control Flags.....................14
         4.1.4. Block Processing Control Flags......................16
         4.1.5. Identifiers.........................................17
            4.1.5.1. Endpoint ID....................................17
               4.1.5.1.1. The "dtn" URI scheme......................18
               4.1.5.1.2. The "ipn" URI scheme......................20
            4.1.5.2. Node ID........................................21
         4.1.6. DTN Time............................................22
         4.1.7. Creation Timestamp..................................22
         4.1.8. Block-type-specific Data............................23
      4.2. Bundle Representation....................................23
         4.2.1. Bundle..............................................23
         4.2.2. Primary Bundle Block................................23
         4.2.3. Canonical Bundle Block Format.......................26
      4.3. Extension Blocks.........................................27
         4.3.1. Previous Node.......................................27
         4.3.2. Bundle Age..........................................27
         4.3.3. Hop Count...........................................28
   5. Bundle Processing.............................................28
      5.1. Generation of Administrative Records.....................29
      5.2. Bundle Transmission......................................30
      5.3. Bundle Dispatching.......................................30
      5.4. Bundle Forwarding........................................30