[Sis-dtn] Notes from 20240410

[Keith Scott]

*SIS-DTN Telecom 20250410*


*Tomaso - CESG Meeting Yesterday*

   - New technical editor won’t happen before the Spring Meeting (June)


   - All the books in queue won’t be processed before that time


   - Another telecom in 1 month


   - Orange BPv7 has been through review but it may be later until it can
   be published


Publish draft books to somewhere

---*Put the BPv7 Orange book into a ‘draft books’ directory on CCSDS?*


*Fragmentation*

Scott: just bail on fragmentation -- force it onto the convergence layer.


Condition: The entirety of every bundle must be able to go across one path
to the destination.


If two fragments really need to go across different paths to the
destination, use bundle-in-bundle encapsulation so that the original
*bundle* gets reconstituted at the destination.


Brian: there are other things beyond size, things in service-level
agreements in the networks.


Scott: could also use DTPC to segment larger bundles into smaller bundles
for BP.


*Three (and a half) ways to address this*

   - Configure applications to send smaller ADUs (source)


   - Use something DTPC-like to segment large ADUs (source, could be added)


   - Use BIBE and do separate security on the encapsulating BIBE bundles
   (in network)


   - Where necessary / possible, use convergence layers that ‘span’
   multiple contacts (segmentation/reassembly at the convergence layer across
   multiple contacts)
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