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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hi Felix,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">I also agree with you on the fact that the reference is the e2e BP-based architecture with possible IP isolated networks (i.e. islands). As to objective of this discussion, my understanding
is that a target could be a SIG (either in SIS or in SEA as from your suggestion). I also think the idea of a WG is not really suitable. Then as to running terrestrial services or even making use of terrestrial standards (wifi, 3gpp, etc.), this is something
being addressed in SOIS, so probably not so suitable for SIS. Actual transportation of “terrestrial” services such as http, email, etc. over BP (though certainly interesting) I don’t see as real mission of CCSDS standardization process, maybe for IETF.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Just for the sake of the discussion, the colleagues from Nanjing University could say a few words more about their idea so that can exactly see whether and how to move on.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Best Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:EN-US">Tomaso<o:p></o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b>Von:</b> SIS-DTN <sis-dtn-bounces@mailman.ccsds.org> <b>Im Auftrag von
</b>Felix Flentge via SIS-DTN<br>
<b>Gesendet:</b> Montag, 11. März 2024 11:40<br>
<b>An:</b> sburleig.sb@gmail.com; Mayer, Jeremy <Jeremy.Mayer@dlr.de>; vint@google.com<br>
<b>Cc:</b> sis-dtn@mailman.ccsds.org<br>
<b>Betreff:</b> Re: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US">On the the IP / BP Networking discussion:<o:p></o:p></span></p>
<ol style="margin-top:0cm" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:54.0pt;mso-list:l4 level1 lfo3"><span lang="EN-GB" style="mso-fareast-language:EN-US">I believe from CCSDS / IOAG / IPNSIG perspective (please correct me if I am wrong), we see BP as the E2E (inter-)networking
protocol (see, eg </span><span lang="EN-GB"><a href="https://www.ioag.org/Public%20Documents/IOAG%20Recommendations%20on%20the%20Selection%20of%20ETE%20Space%20Internetworking%20Protocol%20(002).pdf">IOAG Recommendations on the Selection of ETE Space Internetworking
Protocol (002).pdf</a>). As such, I would see IP networks eg on lunar surface as isolated Local Area Networks without IP routing into other IP networks. As pointed out by Jeremy, we should avoid (naïve) IP / BP encapsulation.</span><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:54.0pt;mso-list:l4 level1 lfo3"><span lang="EN-GB" style="mso-fareast-language:EN-US">For CCSDS / IOAG we should focus on the near- to medium-term use case. For me this means mainly spacecraft M&C, bulk data downlink,
voice&video, teleoperations, last-hop/first-hop, messaging. Of course, it is interesting to think and experiment with terrestrial applications over BP but I don’t believe this should be an CCSDS / IOAG task priority right now.<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:54.0pt;mso-list:l4 level1 lfo3"><span lang="EN-GB" style="mso-fareast-language:EN-US">We need to be aware of the on-going activities, in particular LunaNet Interoperability Specification and IOAG Work (SC#2 update;
I will present at spring meeting). IMHO, we might already have to many WG related, so I am not in favour of creating a new one.<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-left:54.0pt;mso-list:l4 level1 lfo3"><span lang="EN-GB" style="mso-fareast-language:EN-US">It certainly would make sense to consider the IP / BP networking case in the SEA architectures (with support from DTN WG)
<o:p></o:p></span></li></ol>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-GB">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Felix<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span lang="EN-GB" style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org">sis-dtn-bounces@mailman.ccsds.org</a>>
<b>On Behalf Of </b>sburleig.sb--- via SIS-DTN<br>
<b>Sent:</b> Saturday, March 9, 2024 6:56 PM<br>
<b>To:</b> <a href="mailto:Jeremy.Mayer@dlr.de">Jeremy.Mayer@dlr.de</a>; <a href="mailto:vint@google.com">
vint@google.com</a><br>
<b>Cc:</b> <a href="mailto:sis-dtn@mailman.ccsds.org">sis-dtn@mailman.ccsds.org</a><br>
<b>Subject:</b> Re: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-family:Aptos">Thanks for that analysis, Jeremy. We’ve been talking about at least since STINT several years ago, and I really think it’s an idea whose time has come.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-family:Aptos"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-family:Aptos">Scott<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US" style="font-family:Aptos"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US">From:</span></b><span lang="EN-US">
<a href="mailto:Jeremy.Mayer@dlr.de">Jeremy.Mayer@dlr.de</a> <<a href="mailto:Jeremy.Mayer@dlr.de">Jeremy.Mayer@dlr.de</a>>
<br>
<b>Sent:</b> Saturday, March 9, 2024 8:01 AM<br>
<b>To:</b> <a href="mailto:vint@google.com">vint@google.com</a>; <a href="mailto:sburleig.sb@gmail.com">
sburleig.sb@gmail.com</a><br>
<b>Cc:</b> <a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>; <a href="mailto:sis-dtn@mailman.ccsds.org">
sis-dtn@mailman.ccsds.org</a><br>
<b>Subject:</b> RE: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">Hi,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">That’s a fair point. Generally, I’d say that BP-POSIX could work with the following:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5">
<![if !supportLists]><span lang="EN-GB" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">Bind – works: sets source EID.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5">
<![if !supportLists]><span lang="EN-GB" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">Listen – works; sets source EID and opens reception.
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5">
<![if !supportLists]><span lang="EN-GB" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">Connect – UDP style, sets default destination address.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5">
<![if !supportLists]><span lang="EN-GB" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">Send – only valid for connected bundlesocks.
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5">
<![if !supportLists]><span lang="EN-GB" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">Sendto/sendmsg – works.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5">
<![if !supportLists]><span lang="EN-GB" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">Recv – works.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5">
<![if !supportLists]><span lang="EN-GB" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">Recvfrom/recvmsg – works, probably should support “wildcard” EIDs, at least for services.
<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo5">
<![if !supportLists]><span lang="EN-GB" style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">Getaddrinfo and friends – not required<o:p></o:p></span></p>
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</span></span></span><![endif]><span lang="EN-GB">Select – Works, highly implementation dependent.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">BSD sockets really do work for everything!<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">Jeremy<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Vint Cerf <<a href="mailto:vint@google.com">vint@google.com</a>>
<br>
<b>Sent:</b> Samstag, 9. März 2024 16:51<br>
<b>To:</b> Scott Burleigh <<a href="mailto:sburleig.sb@gmail.com">sburleig.sb@gmail.com</a>><br>
<b>Cc:</b> Mayer, Jeremy <<a href="mailto:Jeremy.Mayer@dlr.de">Jeremy.Mayer@dlr.de</a>>; de Cola, Tomaso <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>>; Dr. Keith L Scott via SIS-DTN <<a href="mailto:sis-dtn@mailman.ccsds.org">sis-dtn@mailman.ccsds.org</a>><br>
<b>Subject:</b> Re: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt">Yes generally speaking<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-left:36.0pt">On Sat, Mar 9, 2024, 10:43 <<a href="mailto:sburleig.sb@gmail.com">sburleig.sb@gmail.com</a>> wrote:<o:p></o:p></p>
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<span lang="EN-US" style="font-family:Aptos">I think we get closer to BSD/POSIX if we use UDP as a model. The attenuated UDP notion of connect() would work for BP, I think.</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US" style="font-family:Aptos"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US" style="font-family:Aptos">Scott</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US" style="font-family:Aptos"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<b><span lang="EN-US">From:</span></b><span lang="EN-US"> SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org" target="_blank">sis-dtn-bounces@mailman.ccsds.org</a>>
<b>On Behalf Of </b>Jeremy Mayer via SIS-DTN<br>
<b>Sent:</b> Saturday, March 9, 2024 12:35 AM<br>
<b>To:</b> <a href="mailto:vint@google.com" target="_blank">vint@google.com</a>; <a href="mailto:Tomaso.deCola@dlr.de" target="_blank">
Tomaso.deCola@dlr.de</a><br>
<b>Cc:</b> <a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a><br>
<b>Subject:</b> Re: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<span lang="EN-GB">Hi,</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB">I’m tempted to agree. I’ve seen limited utility in IP->BP encap, as (other than some unidirectional UDP-based applications), the assumptions made in IP networks (especially TCP) do not scale well to DTN environments. The two largest issues
I see are:</span><span lang="EN-US"><o:p></o:p></span></p>
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<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">A.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">The assumption that relatively low-latency and bidirectional communication is available.</span><span lang="EN-US"><o:p></o:p></span></p>
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<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">B.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-GB">The layering of stream and message-based semantics.</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB">Almost every TCP-ish application which I’ve seen run over BP winds up with exceptionally low performance, unless some sort of PEP is integrated, which adds complexity, failure points, and fragility.
</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB">+1 for the notion of a standard API though, with the additional caveat that we should standardize nomenclature across implementations. We could likely reuse about 80% of the BSD/POSIX interface for BP, with the notable exception of connect.</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB">Thanks,</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB">Jeremy</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-GB"> </span><span lang="EN-US"><o:p></o:p></span></p>
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<b><span lang="EN-US">From:</span></b><span lang="EN-US"> SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org" target="_blank">sis-dtn-bounces@mailman.ccsds.org</a>>
<b>On Behalf Of </b>Vint Cerf via SIS-DTN<br>
<b>Sent:</b> Freitag, 8. März 2024 12:31<br>
<b>To:</b> de Cola, Tomaso <<a href="mailto:Tomaso.deCola@dlr.de" target="_blank">Tomaso.deCola@dlr.de</a>><br>
<b>Cc:</b> <a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a><br>
<b>Subject:</b> Re: [Sis-dtn] IP networking within DTN-based protocol architectures<o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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The more I think about this, the less I like trying to manage off-Earth IP networks remotely. I think I would much rather see native applications running over BP. In any case we need to develop standard APIs for BP, such as the Sockets interface for Linux/Unix/Posix. <span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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We do need to figure out how IP-based and BP-based applications interwork. What do Domain Names mean in the BP context for example. <span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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v<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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On Fri, Mar 8, 2024 at 4:24 AM Tomaso de Cola via SIS-DTN <<a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a>> wrote:<span lang="EN-US"><o:p></o:p></span></p>
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Dear All,<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US">as mentioned yesterday during our DTN weekly, during the past Fall meeting a presentation was given by University of Nanjing with the support of Chinese agency about IP-networking within DTN-based protocol stacks, especially for planetary
network segments (i.e. what is often referred to as IP-islands). <o:p></o:p></span></p>
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<span lang="EN-US">The link to that presentation is as follows:<o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<span lang="EN-US"><a href="https://cwe.ccsds.org/sis/docs/SIS-DTN/Meeting%20Materials/2023/Fall%202023%20SIS-DTN/Possible%20BOF%20Discussion.pptx?d=w44d31f0b3be649e4bf24ec4ae50479a1" target="_blank">https://cwe.ccsds.org/sis/docs/SIS-DTN/Meeting%20Materials/2023/Fall%202023%20SIS-DTN/Possible%20BOF%20Discussion.pptx?d=w44d31f0b3be649e4bf24ec4ae50479a1</a><o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<span lang="EN-US">The proposal made there was for a BOF (i.e. towards a WG formation), which I see however too premature. On the contrary, I’d be more in favour for a SIG (Special Interest Group), happening outside the DTN WG.<o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<span lang="EN-US">As discussed yesterday, key points to clarify/agree are:<o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Is the proposal sound and meaningful to be addressed?<o:p></o:p></span></p>
<p class="m-2940071027920571956m128766250028595583msolistparagraph" style="margin-left:72.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo9">
<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Is appropriate for the SIS area or should be better addressed at architectural level in SEA (maybe it can be even a cross-area initiative)?<o:p></o:p></span></p>
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<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">In the case of SIS, is there significant support to start this? In other words, which agencies have interest in contributing to this activity?<o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<span lang="EN-US">Thank you for sharing comments/objections/suggestions.<o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<span lang="EN-US">Have a nice weekend,<o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<span lang="EN-US">Tomaso<o:p></o:p></span></p>
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<span lang="EN-US"> <o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray">————————————————————————</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif">
</span><span lang="EN-US"><o:p></o:p></span></p>
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<b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray">Deutsches Zentrum für Luft- und Raumfahrt</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray"> (DLR)</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray">German Aerospace Center</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D">
<br>
</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray">Institute of Communications and Navigation | Satellite Networks | Oberpfaffenhofen | 82234 Wessling | Germany</span><span style="font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D">
</span><span lang="EN-US"><o:p></o:p></span></p>
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<b><span lang="IT" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray">Tomaso de Cola, Ph.D.</span></b><span lang="IT" style="color:#1F497D"> |
</span><b><span lang="IT" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray">Integrated Satellite Systems (INS) Team Leader<br>
</span></b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:dimgray">Telefon
<a href="tel:+49%208153%20282156" target="_blank">+49 8153 28-2156</a> | Telefax
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</span><span lang="EN-US" style="color:#1F497D"><a href="mailto:sandro.scalise@dlr.de" target="_blank"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif">tomaso.decola@dlr.de</span></a></span><span style="color:#1F497D">
<br>
</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D"><a href="http://www.dlr.de/kn/institut/abteilungen/san" target="_blank"><span lang="DE">http://www.dlr.de/kn/institut/abteilungen/san</span></a></span><span lang="EN-US" style="color:#1F497D">
</span><span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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_______________________________________________<br>
SIS-DTN mailing list<br>
<a href="mailto:SIS-DTN@mailman.ccsds.org" target="_blank">SIS-DTN@mailman.ccsds.org</a><br>
<a href="https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn" target="_blank">https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn</a><span lang="EN-US"><o:p></o:p></span></p>
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<span class="m-2940071027920571956gmailsignatureprefix">-- </span><span lang="EN-US"><o:p></o:p></span></p>
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Please send any postal/overnight deliveries to:<span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;margin-left:36.0pt">
Vint Cerf<span lang="EN-US"><o:p></o:p></span></p>
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Google, LLC<span lang="EN-US"><o:p></o:p></span></p>
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1900 Reston Metro Plaza, 16th Floor<span lang="EN-US"><o:p></o:p></span></p>
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Reston, VA 20190<span lang="EN-US"><o:p></o:p></span></p>
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+1 (571) 213 1346<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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until further notice<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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<span lang="EN-US"><o:p></o:p></span></p>
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