<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
p.MsoPlainText, li.MsoPlainText, div.MsoPlainText
{mso-style-priority:99;
mso-style-link:"Plain Text Char";
margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
span.PlainTextChar
{mso-style-name:"Plain Text Char";
mso-style-priority:99;
mso-style-link:"Plain Text";
font-family:"Calibri",sans-serif;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="#0563C1" vlink="#954F72" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoPlainText">My thoughts below in <span style="color:#4472C4">blue</span><o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Thanks,<o:p></o:p></p>
<p class="MsoPlainText">-----------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoPlainText">Marc Sanchez Net (332H)<o:p></o:p></p>
<p class="MsoPlainText">Telecommunications Engineer<o:p></o:p></p>
<p class="MsoPlainText">Jet Propulsion Laboratory<o:p></o:p></p>
<p class="MsoPlainText">Cell: (617) 953-7977 | Email: <a href="mailto:marc.sanchez.net@jpl.nasa.gov">marc.sanchez.net@jpl.nasa.gov</a><o:p></o:p></p>
<p class="MsoPlainText">-----------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-----Original Message-----<o:p></o:p></p>
<p class="MsoPlainText">From: SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org">sis-dtn-bounces@mailman.ccsds.org</a>> On Behalf Of Birrane, Edward J. via SIS-DTN<o:p></o:p></p>
<p class="MsoPlainText">Sent: Friday, April 14, 2023 7:08 AM<o:p></o:p></p>
<p class="MsoPlainText">To: <a href="mailto:sis-dtn@mailman.ccsds.org">sis-dtn@mailman.ccsds.org</a><o:p></o:p></p>
<p class="MsoPlainText">Subject: [EXTERNAL] [Sis-dtn] IPN services registry questions<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">In the IPN scheme existing IANA registries allocate service number range 66-1023 to SANA, which managed these services at
<a href="https://urldefense.us/v3/__https:/sanaregistry.org/r/bp_cbhe_service_numbers/__;!!PvBDto6Hs4WbVuu7!KFTCIDiMyEQbFAKoyStoiJovyTUre4leWTpFcIo61CPaS1qKnmnFDyi8o6aiWc5XBw2vPrwuJ30QBwaZ7g2k6i4NzgrfXQg$">
https://urldefense.us/v3/__https://sanaregistry.org/r/bp_cbhe_service_numbers/__;!!PvBDto6Hs4WbVuu7!KFTCIDiMyEQbFAKoyStoiJovyTUre4leWTpFcIo61CPaS1qKnmnFDyi8o6aiWc5XBw2vPrwuJ30QBwaZ7g2k6i4NzgrfXQg$</a> .<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Currently there are 2 entries in that registry, both related to CFDP.<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">A few questions:<o:p></o:p></p>
<p class="MsoPlainText">- Is there a reason for this range (up to 1023)? That number doesn't have special meaning in CBOR encoding, so I assume this is beneficial for some other kind of bitpacking?
<span style="color:#4472C4">I think so. In the SDNV format used in BPv6 lower numbers are encoded with less bits. Obviously that is no longer a concern in BPv7.
</span><o:p></o:p></p>
<p class="MsoPlainText">- Are BP/DTN related services for CCSDS so specific that we need a service number range dedicated to SANA?
<span style="color:#4472C4">Not today in ops, but probably yes in the future with applications like video/audio streaming, last-hop data, real-time telemetry streams, immediate vs. normal commands, etc.</span><o:p></o:p></p>
<p class="MsoPlainText">- Are there services that are considered only specific to BPv6 and not BPv7? <o:p></o:p></p>
<p class="MsoPlainText"><span style="color:#4472C4">Not sure, but I would not preclude it. That said, I don’t think missions will need to think about this too much in the future if they move to BPv7.
</span><o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-Ed<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">---<o:p></o:p></p>
<p class="MsoPlainText">Edward J. Birrane, III, Ph.D. (he/him/his) Chief Engineer, Space Constellation Networking Supervisor, Embedded Applications Group Space Exploration Sector Johns Hopkins Applied Physics Laboratory<o:p></o:p></p>
<p class="MsoPlainText">(W) 443-778-7423 / (F) 443-228-3839<o:p></o:p></p>
<p class="MsoPlainText"> <o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">_______________________________________________<o:p></o:p></p>
<p class="MsoPlainText">SIS-DTN mailing list<o:p></o:p></p>
<p class="MsoPlainText"><a href="mailto:SIS-DTN@mailman.ccsds.org">SIS-DTN@mailman.ccsds.org</a><o:p></o:p></p>
<p class="MsoPlainText"><a href="https://urldefense.us/v3/__https:/mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn__;!!PvBDto6Hs4WbVuu7!KFTCIDiMyEQbFAKoyStoiJovyTUre4leWTpFcIo61CPaS1qKnmnFDyi8o6aiWc5XBw2vPrwuJ30QBwaZ7g2k6i4NXT7xfZM$">https://urldefense.us/v3/__https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn__;!!PvBDto6Hs4WbVuu7!KFTCIDiMyEQbFAKoyStoiJovyTUre4leWTpFcIo61CPaS1qKnmnFDyi8o6aiWc5XBw2vPrwuJ30QBwaZ7g2k6i4NXT7xfZM$</a>
<o:p></o:p></p>
</div>
</body>
</html>