[Sis-dtn] Bundle Transfer Protocol - Unidirectional

[Tomaso.deCola at dlr.de]

During that telco he mentioned that this draft came from a use case they currently have at Aalyria for some customers in the EO context, necessitating the direct encapsulation of bundles into frames. But indeed we could invite him in one of our weekly DTN telcos, to get some more details.

Tomaso

From: Felix Flentge <Felix.Flentge at esa.int>
Sent: Mittwoch, 26. Februar 2025 16:20
To: de Cola, Tomaso <Tomaso.deCola at dlr.de>; sis-dtn at mailman.ccsds.org
Subject: RE: Bundle Transfer Protocol - Unidirectional

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<mailto: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<mailto: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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