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<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Hi Keith, all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Just two considerations:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;mso-fareast-language:EN-US">SPP APID: as mentioned on the chat, the SANA registry for the APID is now counting only one approved APID. In the past there
were two more for CFDP and LTP over SPP, but it was agreed in the latest specification of SPP (you can check Annex 2 for SANA considerations) that APID definitions should be mission specific and therefore no specific protocol mapping would be defined in the
specification. This is a point we also discussed with Scott last Autumn once the spec was out, just to have some thoughts on how it could work for us. But as said at that point, any mission will be free to select its own APID(s) apparently.<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Concerning CLs for BP, in the past we were also envisaging the case of BP over TCP for the terrestrial links, in case bundles
could be forwarded from the ground station to the users by using classical TCP/IP infrastructure. Should this be considered too here, or will we in any case refer to the TCPCL spec from IETF?<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">My 0.02 cents,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-US">Tomaso<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt">From:</span></b><span lang="EN-US" style="font-size:11.0pt"> SIS-DTN <sis-dtn-bounces@mailman.ccsds.org>
<b>On Behalf Of </b>Dr. Keith L Scott<br>
<b>Sent:</b> Mittwoch, 30. Juni 2021 18:07<br>
<b>To:</b> sis-dtn@mailman.ccsds.org<br>
<b>Subject:</b> [Sis-dtn] SIS-DTN Telecon Notes 20210630<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="p1"><b><span lang="EN-US">SIS-DTN Telecon</span></b><span lang="EN-US"><o:p></o:p></span></p>
<p class="p2"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="p3"><span lang="EN-US">BPsec -- Ed asked SEA-SEC for a quick review of format from the old SBSP book<o:p></o:p></span></p>
<p class="p2"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="p3"><span lang="EN-US">LTP Orange<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Discussion<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Implementation<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Use cases?<o:p></o:p></span></p>
<p class="p2"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="p1"><b><span lang="EN-US">BPv7</span></b><span lang="EN-US"><o:p></o:p></span></p>
<p class="p5"><b><span lang="EN-US">Felix Flentge</span></b><span lang="EN-US"><o:p></o:p></span></p>
<p class="p3"><span lang="EN-US">DTPC<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• How to separate the various parts out of that<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Custody signaling in BPv7<o:p></o:p></span></p>
<p class="p6"><span lang="EN-US">• Stuff not covered in BIBE-CT -- want to use CT for multi-hop custody.<o:p></o:p></span></p>
<p class="p6"><span lang="EN-US">• Bundle might take a long time to get to their destination.<o:p></o:p></span></p>
<p class="p6"><span lang="EN-US">• independent custody signaling (based on ACS)<o:p></o:p></span></p>
<p class="p6"><span lang="EN-US">• Interested in a custody transfer mechanism where you don’t need to know/identify the next custodian<o:p></o:p></span></p>
<p class="p6"><span lang="EN-US">• Looking at very high data rate downlink scenarios / less predictable<o:p></o:p></span></p>
<p class="p2"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="p3"><span lang="EN-US">Beau Blanding -- will be doing the writing, helped by Josh and Lee Pitts.<o:p></o:p></span></p>
<p class="p2"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="p3"><span lang="EN-US">Maybe keep w/ BIBE-CT for now in CCSDS and augment with some other extension-block-supported mechanism later in CCSDS and/or IETF.<o:p></o:p></span></p>
<p class="p2"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="p3"><span lang="EN-US">Convergence Layers for v7:<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• LTP<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Encapsulation Packets<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Felix: Space packets<o:p></o:p></span></p>
<p class="p1"><b><span lang="EN-US">Simon Singh</span></b><span lang="EN-US"><o:p></o:p></span></p>
<p class="p3"><span lang="EN-US">Flow management<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Resource allocation / management in intermediate nodes<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Anybody else interested in flow management?<o:p></o:p></span></p>
<p class="p2"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="p3"><span lang="EN-US">Extension blocks (previous hop, bundle age)<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Any node should be able to process these blocks<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Block processing flags<o:p></o:p></span></p>
<p class="p2"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="p1"><b><span lang="EN-US">Actions:</span></b><span lang="EN-US"><o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Look at the Orange thread<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• NASA need for custody transfer?<span class="apple-converted-space">
</span>PACE / Gateway<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Felix: write down thoughts on extension-block based custody transfer support<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Keith: figure out about APID assignment for BP over space packets<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Keith: definitive lists of capabilities for LTP and BP updates<o:p></o:p></span></p>
<p class="p4"><span lang="EN-US">• Understand the ‘traffic pared’ bundle expiration reason code<o:p></o:p></span></p>
<p class="p6"><span lang="EN-US">• What’s the purpose / use case?<o:p></o:p></span></p>
<p class="p6"><span lang="EN-US">• How does a node know that it’s neighbor isn’t just going to delete things?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:16.0pt"><o:p> </o:p></span></p>
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