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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I believe I concur with Vint. Emeritus is appropriate (silver) but expending effort that could be better served elsewhere would be inappropriate.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Lee<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> sis-dtn-bounces@mailman.ccsds.org [mailto:sis-dtn-bounces@mailman.ccsds.org]
<b>On Behalf Of </b>Vint Cerf<br>
<b>Sent:</b> Monday, February 01, 2016 8:12 AM<br>
<b>To:</b> Scott, Keith L.<br>
<b>Cc:</b> scps-interest@mailman.ccsds.org; sis-dtn@mailman.ccsds.org; sis-cfdpv1@mailman.ccsds.org<br>
<b>Subject:</b> Re: [Sis-dtn] CCSDS Notification -- Renew / Retire / Update SCPS-TP specification in CCSDS<o:p></o:p></span></p>
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<p class="MsoNormal">if these older protocols are not operational and if there are no plans to deploy them, it seems to me that retaining the documentation in some kind of retired or emeritus status is appropriate.<o:p></o:p></p>
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<p class="MsoNormal">v<o:p></o:p></p>
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<p class="MsoNormal">On Mon, Feb 1, 2016 at 8:57 AM, Scott, Keith L. <<a href="mailto:kscott@mitre.org" target="_blank">kscott@mitre.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">Greetings,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">The SCPS-TP specification is again overdue for reconfirmation within CCSDS. At this time we have the opportunity to:<o:p></o:p></span></p>
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<b><span style="font-size:10.5pt;font-family:"Calibri","sans-serif"">RENEW</span></b><span style="font-size:10.5pt;font-family:"Calibri","sans-serif""> the specification for another 5 years — essentially leaving it as-is.<o:p></o:p></span></li><li class="MsoNormal" style="color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level1 lfo1">
<b><span style="font-size:10.5pt;font-family:"Calibri","sans-serif"">RETIRE</span></b><span style="font-size:10.5pt;font-family:"Calibri","sans-serif""> the specification to ‘<a href="http://public.ccsds.org/publications/SilverBooks.aspx" target="_blank">silver</a>’
status — it will remain accessible via the CCSDS website but will no longer be considered an ‘active’ CCSDS Specification
<o:p></o:p></span></li></ol>
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<li class="MsoNormal" style="color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo1">
<span style="font-size:10.5pt;font-family:"Calibri","sans-serif"">We did this already with the
<a href="http://public.ccsds.org/publications/archive/713x0b1s.pdf" target="_blank">
SCPS-NP</a>, <a href="http://public.ccsds.org/publications/archive/713x5b1sc1.pdf" target="_blank">
SCPS-SP,</a> and <a href="http://public.ccsds.org/publications/archive/717x0b1s.pdf" target="_blank">
SCPS-FP</a> protocols.<o:p></o:p></span></li><li class="MsoNormal" style="color:black;mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l0 level2 lfo1">
<span style="font-size:10.5pt;font-family:"Calibri","sans-serif"">SCPS-TP is not used in any known space missions.<o:p></o:p></span></li></ul>
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<b><span style="font-size:10.5pt;font-family:"Calibri","sans-serif"">UPDATE</span></b><span style="font-size:10.5pt;font-family:"Calibri","sans-serif""> the specification — make changes to it.
<o:p></o:p></span></li></ol>
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<span style="font-size:10.5pt;font-family:"Calibri","sans-serif"">Note that updating the specification would require securing resources from two CCSDS member agencies, which would be very difficult unless there is a compelling need.<o:p></o:p></span></li></ul>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">CCSDS has maintained the SCPS-TP specification mainly as a service to the terrestrial community using it. As noted above, SCPS-TP has not been deployed in space
missions and within CCSDS is being supplanted by the combination of TCP and the IP suite (where the IP suite can function well) and the BP suite (where the IP suite doesn’t function well).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">The activity of determining what to do with the specification will be undertaken by the SIS area and discussed briefly during the SIS-DTN portion of the Spring
meetings in Cleveland week of 4 April.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:red">What I am interested in now are opinions from the community as to the three options above. In particular, does anyone see a need for CCSDS to maintain the ‘active’
status of SCPS-TP? Again, retiring the specification within CCSDS will NOT cause it to disappear, NOR will it change the fact that the TCP options that implement the signaling for SCPS-TP will remain defined in IANA.</span></b><span style="font-size:10.5pt;font-family:"Calibri","sans-serif""><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">V/r,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black">—keith<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">Dr. Keith Scott</span></b><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">
Office: <a href="tel:%2B1.703.983.6547" target="_blank">+1.703.983.6547</a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">Chief Engineer, J86A Fax:
<a href="tel:%2B1.703.983.7142" target="_blank">+1.703.983.7142</a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">Communications Network Engineering & Analysis Email: <a href="mailto:kscott@mitre.org" target="_blank"><span style="color:#954F72">kscott@mitre.org</span></a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:black"><a href="http://www.mitre.org/" target="_blank"><span style="color:#954F72">The MITRE Corporation</span></a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">M/S H300</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">7515 Colshire Drive</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">McLean, VA 22102</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959"> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">Area Director,</span><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:black"> <a href="http://www.ccsds.org/" target="_blank"><span style="color:#954F72">CCSDS</span></a> <a href="http://cwe.ccsds.org/sis/default.aspx" target="_blank"><span style="color:#954F72">Space
Internetworking Services</span></a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:black"> </span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Calibri","sans-serif";color:#595959">MITRE self-signs its own certificates. Information about the MITRE PKI Certificate Chain is available from <a href="http://www.mitre.org/tech/mii/pki/" target="_blank"><span style="color:#954F72">http://www.mitre.org/tech/mii/pki/</span></a></span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p></o:p></span></p>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="http://www.mitre.org/" target="_blank"><span style="text-decoration:none"><img border="0" width="168" height="29" id="_x0000_i1025" src="cid:image001.png@01D15CCA.3DF3C4B0"></span></a><span style="color:black"><o:p></o:p></span></span></p>
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<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
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_______________________________________________<br>
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<a href="http://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn" target="_blank">http://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal">New postal address:<o:p></o:p></p>
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<p class="MsoNormal">Google<o:p></o:p></p>
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<p class="MsoNormal">1875 Explorer Street, 10th Floor<o:p></o:p></p>
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<p class="MsoNormal">Reston, VA 20190<o:p></o:p></p>
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