[Sis-dtn] Bundle Transfer Protocol - Unidirectional

[Felix Flentge]

Hi,

The obvious question for me would be how this compares to our current solutions (ie, space and encapsulation packets). In particular, I see some disadvantages of the proposed approach with padding as it seems we could not have several bundles in a single frame (maybe not a real issue with relatively small frames). Maybe we should invite Rick also to present and discuss with CCSDS.

Regards,
Felix

From: SIS-DTN <sis-dtn-bounces at mailman.ccsds.org> On Behalf Of Tomaso de Cola via SIS-DTN
Sent: 26 February 2025 14:14
To: sis-dtn at mailman.ccsds.org
Subject: [Sis-dtn] FW: Bundle Transfer Protocol - Unidirectional

Fyi

This is something Rick had already inform me and Bob some weeks ago when we did the monthly CCSDS/IETF alignment on DTN activities.

Regards,

Tomaso

From: Rick Taylor <rick at tropicalstormsoftware.com<mailto:rick at tropicalstormsoftware.com>>
Sent: Mittwoch, 26. Februar 2025 14:11
To: dtn at ietf.org<mailto:dtn at ietf.org>; 'Robert C Durst' (durst at mitre.org<mailto:durst at mitre.org>) <durst at mitre.org<mailto:durst at mitre.org>>
Subject: [dtn] Bundle Transfer Protocol - Unidirectional

Hi All,

Just to let you all know I have recently published a personal draft: Bundle Transfer Protocol - Unidirectional. https://datatracker.ietf.org/doc/draft-taylor-dtn-btpu/

The intent is to provide a minimal, efficient wire protocol for transferring Bundles over unidirectional, unreliable frame-based link-layer protocols, such as AOS, TM, 5G PDU and Ethernet.

I'm following it up with a related draft covering how to add FEC to BTPU, for cases when selective FEC is useful, and a simple BTPU-over-Ethernet draft, which might be handy in some scenarios.

Also, I would be particularly interested in collaborating with anyone who can help draft a good specification for BTPU over the CCSDS data-frame protocols.

I hope to find time in our packed WG agenda at IETF-112 to discuss it a bit more.

Many thanks,
Rick
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