[dtn] Re: [EXT] I-D Action: draft-ietf-dtn-udpcl-04.txt

["Sipos, Brian J." <[e-mail]>]

All,
This version of the UDPCLv2 spec makes three additions to the document:
1. It adds a terminology definition for "transport parameters" as seen by each
local CLA, which can (and for multicast must) bind a UDP conversation to a
specific interface. I think this notion applies equally as well to how BTPUoE
[1] will operate, so feel free to steal this terminology if it helps.
2. Add a term and subsection under each of Sections 2 and 3 to explain the
concept of "advertisement" consisting of existing extension items but
coordinated by the transmitting entity and controlled by policy on each side.
3. Add a full "Operational Considerations" section with a subsection
explaining why and how each of the protocol's capabilities can be used. This
is separate from the Section 2 explanation and Section 3 technical definition
of each mechanism. Each of these is meant to address questions raised during
the last IETF and on the mailing list, making the document more stand-alone
and self-explanatory.

This version does not make any changes to the mechanisms themselves, which
have all been stable and have had at least some trial implementation. As
always, more refining feedback is welcome.

Brian S.

[1] https://datatracker.ietf.org/doc/draft-ek-dtn-ethernet/

> -----Original Message-----
> From: [e-mail] <[e-mail]>
> Sent: Monday, June 15, 2026 2:48 PM
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> Subject: [EXT] [dtn] I-D Action: draft-ietf-dtn-udpcl-04.txt
>
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> Internet-Draft draft-ietf-dtn-udpcl-04.txt is now available. It is a work
> item of
> the Delay/Disruption Tolerant Networking (DTN) WG of the IETF.
>
>    Title:   Delay-Tolerant Networking UDP Convergence Layer Protocol Version
> 2
>    Authors: Brian Sipos
>             Joshua Deaton
>    Name:    draft-ietf-dtn-udpcl-04.txt
>    Pages:   60
>    Dates:   2026-06-15
>
> Abstract:
>
>    This document describes a UDP convergence layer (UDPCL) for Delay-
>    Tolerant Networking (DTN).  This version of the UDPCL protocol
>    clarifies requirements of the earlier experimental RFC 7122, adds
>    discussion of multicast addressing, congestion signaling, and updates
>    to the Bundle Protocol (BP) contents, encodings, and convergence
>    layer requirements in BP version 7.  Specifically, the UDPCL uses
>    CBOR-encoded BPv7 bundles as its service data unit being transported
>    and provides an unacknowledged transport of such bundles.  This
>    version of UDPCL also includes security and extensibility mechanisms.
>
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-ietf-dtn-udpcl/
>
> There is also an HTML version available at:
> https://www.ietf.org/archive/id/draft-ietf-dtn-udpcl-04.html
>
> A diff from the previous version is available at:
> https://author-tools.ietf.org/iddiff?url2=draft-ietf-dtn-udpcl-04
>
> Internet-Drafts are also available by rsync at:
> rsync.ietf.org::internet-drafts
>
>
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