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<p>Hi cmNOG-ers,</p>
<p>Chers|Chères cmNOG-istes,</p>
<p>Perhaps you know a bit about IPN & DTN, to follow the ongoing
research, in regard, you can subscribe to the ISOC IPN Chapter and
join the relative blog mailinglist.<br>
</p>
<span id="result_box" class="" lang="fr"><span class="">Peut-être
connaissez-vous un peu l’IPN et le DTN? Pour suivre les
recherches en cours, vous pouvez vous abonner au chapitre IPN de
l’ISOC et vous inscrire à la liste de diffusion du blog
correspondant.<br>
<br>
Below is the first blog, i have just received yesterday.<br>
</span></span><br>
<span id="result_box" class="" lang="fr"><span>Trouvez, ci-dessous,
le premier blog que j'ai juste reçu hier.<br>
</span></span> <br>
Regards,<br>
Cordialement,<br>
--sb.<span id="result_box" class="" lang="fr"><span class=""></span></span><br>
<br>
<div class="moz-cite-prefix">Le 11/19/2018 à 7:39 PM,
<a class="moz-txt-link-abbreviated" href="mailto:isoc-ams@isoc.org">isoc-ams@isoc.org</a> a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:EAAE00F7F95A473ABDB71D1F60A63A16@S603389AD01.CORP">
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<p class="MMTopic1"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">Note: The blog will
be updated weekly on ipnsig.org</span></p>
<p class="MMTopic1"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">Welcome to the
InterPlanetary Networking Blog! We intend to make this a
weekly publication of interest to everyone interested in
InterPlanetary Networking (IPN), Delay & Disruption
Tolerant Networking (DTN), and computer networking in general.</span></p>
<p class="MMTopic1"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">Since this is the
inaugural blog entry, we thought it would be useful to back up
a bit and answer some basic questions:</span></p>
<p class="MMTopic1"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;"><strong>What is IPN?</strong></span></p>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">It is a solution to
the constrained network environment present in space data
communications and, more generally, in the emerging Internet
of Things.</span></p>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">TCP/IP, the core <a
moz-do-not-send="true">technology </a></span><span
style="font-size: 8pt; font-family: 'Times New Roman'; color:
windowtext;"><a id="_anchor_1"
href="file:///C:/Users/msnell/Downloads/2018-11-05%20IPN%20Intro%20Blog.docx#_msocom_1"
language="JavaScript" moz-do-not-send="true">[BSC(1]</a> </span><span
style="font-size: 12pt; font-family: Calibri, sans-serif;
color: windowtext;">running today’s Internet, assumes
essentially instantaneous, continuous end-to-end connectivity,
and fails when it encounters delay or disruption of any
significant length (about 4 seconds).</span></p>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">However, delays and
disruptions are inherent in data communications at
interplanetary distances, with the shortest Round Trip Time
(RTT) for a radio signal to travel to Mars and back being
about 7 minutes. Other factors contribute to the network
constraints existing in interplanetary communications, but
delay is the most significant factor making existing Internet
protocols impractical for use.</span></p>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;"> </span><strong
style="font-size: 12pt; color: windowtext; font-family:
Calibri, sans-serif;">Enter DTN:</strong></p>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">Adrian Hooke (Sr.
Technical Director with the Jet Propulsion Laboratory, NASA)
meets Vint Cerf (co-author of the TCP/IP protocols and one of
“Fathers of the Internet”) in the late 1990’s. They discover
they both want to provide the same kind of network
communications automation in space networking that works so
well on the Internet. </span></p>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">Vint Cerf gets to
work. A terse history follows:</span></p>
<ul style="list-style-type: disc;">
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">DARPA funds work at JPL. </span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">Core experimental
“delay-tolerant networking” protocols developed by JPL,
MITRE, Sparta researchers.</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">ION implementation of DTN
developed at JPL for use by NASA.</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">DTNRG established to mature
the protocols.</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">ION demonstrated on the
EPOXI spacecraft in deep space.</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">ION deployed for all science
payload communications on ISS.</span></li>
</ul>
<p class="MMTopic1"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;"><strong>Where is IPN
today?</strong></span></p>
<ul style="list-style-type: disc;">
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">IETF DTN Working Group
formed to establish DTN protocols as Internet standards.</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">Consultative Committee for
Space Data Systems (CCSDS—a global standards setting
organization for civilian space flight) standards adoption
well underway.</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">Security Protocols maturing
(including Public Key Infrastructure—PKI).</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">Dr. Scott Pace (White House
Space Policy Director) challenges NASA to use DTN for all
space communications (see </span><span style="font-size:
12pt; font-family: Calibri, sans-serif;"><a
href="https://www.youtube.com/watch?v=InMP-OI1thw&index=9&list=PL4buVHalBRoPpFRFlpYVnXHLwWNwFmpmt&t=0s"
moz-do-not-send="true">https://www.youtube.com/watch?v=InMP-OI1thw&index=9&list=PL4buVHalBRoPpFRFlpYVnXHLwWNwFmpmt&t=0s</a></span><span
style="font-size: 12pt; font-family: Calibri, sans-serif;
color: windowtext;"> for Dr. Pace’s presentation at our 2015
IPN Speakers Conference).</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">NASA integrating DTN into
ground networks and future spacecraft.</span></li>
</ul>
<p class="MMTopic1"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;"><strong>IPN's bright
future</strong></span></p>
<ul style="list-style-type: disc;">
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">Increasing standardization
amongst civilian space agencies.</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">Increasing international
research into DTN for constrained terrestrial as well as
space networking environments.</span></li>
<li><span style="font-size: 12pt; font-family: Calibri,
sans-serif; color: windowtext;">Coming adoption as internet
standards.</span></li>
</ul>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;"><strong>What’s next
for the blog?</strong></span></p>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">Each week, we will
post news about the exciting world of IPN, or summaries of
academic research, or links to IPN in the mainstream media.
We’ll also be announcing upcoming IPNSIG events and
activities. We hope you enjoy the blog.</span></p>
<p class="MMTopic2"><span style="font-size: 12pt; font-family:
Calibri, sans-serif; color: windowtext;">This blog is a
product of the usual suspects: Scott Burleigh (NASA/JPL); Jay
Wyatt (NASA/JPL); Keith Scott (Mitre Corp./CCSDS) and Mike
Snell (IPNSIG)</span></p>
<p> </p>
</blockquote>
<pre class="moz-signature" cols="72">--
Regards,
Sylvain B.
<a class="moz-txt-link-freetext" href="http://www.chretiennement.org">http://www.chretiennement.org</a>
__
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