<span style=" font-size:10pt;font-family:sans-serif">Hi Keith,</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">maybe there has
been something wrong with the link in the invitation. Teams was telling
me the whole time that the meeting did not start yet.</span>
<br>
<br><span style=" font-size:10pt;font-family:sans-serif">Regards,</span>
<br><span style=" font-size:10pt;font-family:sans-serif">Felix</span>
<br>
<br>
<br>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">From:
</span><span style=" font-size:9pt;font-family:sans-serif">"Dr.
Keith L Scott" <kscott@mitre.org></span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">To:
</span><span style=" font-size:9pt;font-family:sans-serif">"sis-dtn@mailman.ccsds.org"
<sis-dtn@mailman.ccsds.org></span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Date:
</span><span style=" font-size:9pt;font-family:sans-serif">24/03/2021
18:20</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Subject:
</span><span style=" font-size:9pt;font-family:sans-serif">[Sis-dtn]
SIS-DTN Telecon 20210324</span>
<br><span style=" font-size:9pt;color:#5f5f5f;font-family:sans-serif">Sent
by: </span><span style=" font-size:9pt;font-family:sans-serif">"SIS-DTN"
<sis-dtn-bounces@mailman.ccsds.org></span>
<br>
<hr noshade>
<br>
<br>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:14pt;font-family:Calibri">We
had a lightly-attended SIS-DTN mtg today. Notes are here: </span><a href=https://cwe.ccsds.org/fm/wiki/SitePages/20210324.aspx><span style=" font-size:14pt;color:blue;font-family:Calibri"><u>https://cwe.ccsds.org/fm/wiki/SitePages/20210324.aspx</u></span></a><span style=" font-size:14pt;font-family:Calibri">
and below.</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:14pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:14pt;font-family:Calibri">
v/r,</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:14pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:14pt;font-family:Calibri">
--keith</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:14pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>Dr.
Keith Scott
</b></span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>L110
Chief Architect, Advanced Networking for Assured Communications</b></span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>Office:
703.983.6547</b></span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>Cell:
301.437.4472</b></span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>Email:
</b></span><a href=mailto:kscott@mitre.org><span style=" font-size:10pt;color:blue;font-family:Calibri"><b><u>kscott@mitre.org</u></b></span></a></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><a href=http://www.mitre.org/><span style=" font-size:10pt;color:blue;font-family:Calibri"><b><u>The
MITRE Corporation</u></b></span></a></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>M/S
J500</b></span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>7596
Colshire Drive</b></span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>McLean,
VA 22102</b></span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b> </b></span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b>MITRE
self-signs its own certificates. Information about the MITRE PKI
Certificate Chain is available from </b></span><a href=https://www.mitre.org/tech/mii/pki/><span style=" font-size:10pt;color:#808080;font-family:Calibri"><b><u>https://www.mitre.org/tech/mii/pki/</u></b></span></a></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:14pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:26pt;color:#0082bf;font-family:Segoe UI Light">SIS-DTN
WG Mtg20210324</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><a href="https://cwe.ccsds.org/fm/wiki/SitePages/SIS-DTN.aspx"><span style=" font-size:10pt;color:#0082bf;font-family:Segoe UI"><u>SIS-DTN
Home</u></span></a></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:16pt;color:#0082bf;font-family:Segoe UI Semilight">LTP</span></p>
<p style="margin-top:0px;margin-Bottom:240px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Updates
to LTP Things List</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:13pt;color:#2f2f2f;font-family:Segoe UI Semilight">Discussion:
How many configurations should be mandatory to implement?</span></p>
<ul>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Have
one implementation (maybe the mandatory one?) use variable-length fields?</span>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">What
if we don’t mandate ANY required-to-implement configuration?</span>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Josh
argues for at least one mandatory to ensure some interoperability</span>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Still
no auto-negotiation of which profile to use -- that’s still configuration</span>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Stripped-down
fixed-length field version for mandatory implementation would be OK.</span></ul><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI"> </span>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Should
CCSDS mandate implementation of at least one interoperable profile?</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#808080;font-family:Segoe UI">Pros:</span></p>
<ul>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">There
would be at least one profile that you could guarantee would work with
all LTP implementations. A user picking up two LTP iplementations
would be guaranteed that they could at least be made to interoperate (even
if the mandatory profile doesn't produce particuarly good performance).</span></ul><span style=" font-size:10pt;color:#808080;font-family:Segoe UI">Cons:</span>
<ul>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Requires
implementers to implement something that they might not ever use.</span></ul><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Need
to think on this more.</span>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:16pt;color:#0082bf;font-family:Segoe UI Semilight">BPv7</span></p>
<p style="margin-top:0px;margin-Bottom:150px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">See
the </span><a href=https://cwe.ccsds.org/fm/wiki/SitePages/BPv7%20Update%202021.aspx><span style=" font-size:10pt;color:#0082bf;font-family:Segoe UI"><u>BPv7
Update Page</u></span></a></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI"></span></p>
<p style="margin-top:0px;margin-Bottom:150px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Non-singleton-destination
stuff in draft-31</span></p>
<p style="margin-top:0px;margin-Bottom:150px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Changes
to dispatching and forwarding failed subsections</span></p>
<p style="margin-top:0px;margin-Bottom:150px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Inclusion
of DTN URI Scheme (CCSDS spec required use of the ipn naming scheme); use
of IMC naming scheme.</span></p>
<p style="margin-top:0px;margin-Bottom:150px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Discovery
mechanism? More targeted at human spaceflight / lunar exploration?
What link-layer mechanism to use (USLP? USLP with some sort
of modified COP?) Need some sort of broadcast address? Prox-1?</span></p>
<p style="margin-top:0px;margin-Bottom:150px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Something
to force identification of connecting nodes at the CLA level? Make
them send a bundle with a previous-hop-block when you establish a connection?
Needs to be part of the (all?) CLA protocol(s).</span></p>
<p style="margin-top:0px;margin-Bottom:150px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">@Keith:
Cross-check this stuff with:</span></p>
<ul>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Lee's
briefing at CCSDS last year</span>
<li><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">Jonathan
Wilmot's deisred capabilities</span></ul><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI">And
build out a spreadsheet of</span>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:10pt;color:#4f4f4f;font-family:Segoe UI"><br>
</span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span></p>
<p style="margin-top:0px;margin-Bottom:0px"><span style=" font-size:11pt;font-family:Calibri"> </span><tt><span style=" font-size:10pt">_______________________________________________<br>
SIS-DTN mailing list<br>
SIS-DTN@mailman.ccsds.org<br>
</span></tt><a href="https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn"><tt><span style=" font-size:10pt">https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn</span></tt></a><tt><span style=" font-size:10pt"><br>
</span></tt></p>
<p style="margin-top:0px;margin-Bottom:0px"></p>
<p style="margin-top:0px;margin-Bottom:0px"></p>