Delay/Disruption Tolerant Networking

The information below is for a proposed recharter. The current approved charter is version 01
Document Proposed charter Delay/Disruption Tolerant Networking WG (dtn)
Title Delay/Disruption Tolerant Networking
Last updated 2021-11-11
State External Review (Message to Community, Selected by Secretariat) Rechartering
WG State Active
IESG Responsible AD Zaheduzzaman Sarker
Charter Edit AD Zaheduzzaman Sarker
Telechat date On agenda of 2021-12-02 IESG telechat
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The Delay/Disruption Tolerant Networking (DTN) Working Group specifies
mechanisms for data communications in the presence of long delays and/or
intermittent connectivity.  The Working Group has published the Bundle Protocol
v7 (BPv7), corresponding Bundle Protocol Security protocol (BPSec) and an
interoperable Security Context, and the TCP Convergence Layer specifications
as standards track RFCs. Multiple independent implementations
exist for these technologies in both space and terrestrial
environments, and the technology is now used in production by government and
commercial organizations world-wide.

This Working Group now focuses on the further work relevant to the area of
Delay/Disruption Tolerant Networking, dividing work items into 3
broad categories:

 * An architecture for Naming, Addressing and Forwarding

    The Bundle Protocol v7 defines an encoding of Names for use in DTN, but the
    detailed semantics have not been specified.  The Working Group will define
    a common architecture for the delay/disruption tolerant assignment of
    names, and the late-binding of such names during bundle forwarding to
    end-points within a DTN.  This architecture will define a standard model
    for the forwarding process of a Bundle Process Agent, providing an
    informational reference point for further specifications.

    The Working Group charter intentionally excludes topics related to Routing
    in DTNs. This does not preclude discussion of the subject, in coordination
    with the Routing Area, but no Working Group documents will be adopted under
    this charter.

 * The definition of architecture and protocols in the areas of Operations,
 Administration and Management (OAM), and Key Management

    Current DTN deployments rely on the use of pre-placed keys and
    configuration or bespoke tooling, and there is a growing demand for
    standards to improve the automation and reliability of DTN management.
    Existing IETF protocols for OAM and Key Management generally rely on a
    bi-directional end-to-end path between devices, and in Delay/Disruption
    Tolerant Networks (DTNs) such paths rarely exist.  To enable OAM and Key
    Management in such cases, there may be a need to standardize an
    architecture supporting alternative methods and their supporting protocols
    and data models.  The Working Group will liaise with relevant experts in
    the OPS Area to discover if there are existing standards that meet, or may
    be extended to meet, the DTN use-cases before standardizing new protocols.
    There is also believed to be cross-over between the use-cases for OAM and
    Key Management in DTNs and the use-cases in Mobile Ad-hoc Networks
    (MANETs); to this end the Working Group will coordinate with the MANET
    Working Group to explore potential synergies and avoid duplication of

 * Extensions to and best practices for existing protocols

    Extensions to the Bundle Protocol to enable reliability signalling,
    tunnelling and Quality of Service indication are needed for the operational
    deployment of Delay/Disruption Tolerant Networks, and these capabilities
    will be standardized by the Working Group.

    Additional extensions to the Bundle Protocol, additional Security Context
    definitions for BPSec, and new Convergence Layer adaptors will be
    considered on a case-by-case basis by the working group.

    The Working Group will also document best practices learned from existing

The Working Group will coordinate with other IETF Working Groups, especially in
the Security, Routing, Operation and Management Areas, to ensure the quality of
peer review, the avoidance of duplication of effort, and alignment with
specifications produced in other Working Groups.

Proposed milestones:

 * Naming and Addressing Architecture document
 * Neighbor/Peer Discovery protocol specification

 * Delay-Tolerant Management Architecture and Protocols
 * Key Management protocol specification

 * Bundle progress signalling extension to Bundle Protocol specification
 * Bundle-in-Bundle Encapsulation extension to Bundle Protocol specification
 * Quality of Service/Flow indication extension to Bundle Protocol

Proposed milestones

No milestones for charter found.