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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Hi Felix, all,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">If we are all ok with the present version, I’ll issue a SIS resolution for “sending” the book to agency revision (upon approval from CESG/CMC).<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Tomaso<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none">
</span><span style="font-family:"Malgun Gothic",sans-serif;mso-ligatures:none">구철회</span><span style="font-family:"Calibri",sans-serif;mso-ligatures:none"> <chkoo@kari.re.kr>
<br>
<b>Sent:</b> Mittwoch, 25. September 2024 09:05<br>
<b>To:</b> Felix Flentge <Felix.Flentge@esa.int><br>
<b>Cc:</b> sis-cfdpv1@mailman.ccsds.org; de Cola, Tomaso <Tomaso.deCola@dlr.de><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Thanks for the prompt action. I will concur with your changes.<o:p></o:p></span></p>
<p class="MsoNormal" style="word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Cheol<o:p></o:p></span></p>
<p class="MsoNormal" style="word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> Felix Flentge <<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>>
<br>
<b>Sent:</b> Wednesday, September 25, 2024 3:44 PM<br>
<b>To:</b> </span><span lang="KO" style="font-family:"Gulim",sans-serif;mso-ligatures:none;mso-fareast-language:KO">구철회</span><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> <<a href="mailto:chkoo@kari.re.kr">chkoo@kari.re.kr</a>><br>
<b>Cc:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a>;
<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Thanks Cheol,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">I have included your proposed change in the wording.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">For TCP UT Layer, I am not sure whether we should add something.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">Please see below for my detailed replies.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:KO">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:KO">Felix<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">
</span><span lang="KO" style="font-family:"Malgun Gothic",sans-serif;mso-ligatures:none;mso-fareast-language:KO">구철회</span><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> <<a href="mailto:chkoo@kari.re.kr">chkoo@kari.re.kr</a>>
<br>
<b>Sent:</b> Wednesday, September 25, 2024 2:01 AM<br>
<b>To:</b> Felix Flentge <<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>><br>
<b>Cc:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a>;
<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Hi Felix.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Thanks for the feedback. Please see my comments below with red text.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Best,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Cheol<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> Felix Flentge
<<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>> <br>
<b>Sent:</b> Monday, September 23, 2024 10:31 PM<br>
<b>To:</b> </span><span lang="KO" style="font-family:"Gulim",sans-serif;mso-ligatures:none;mso-fareast-language:KO">구철회</span><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> <<a href="mailto:chkoo@kari.re.kr">chkoo@kari.re.kr</a>><br>
<b>Cc:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a>;
<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">Thanks Cheol,<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">Please see my replies to your comments below.<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">I have already integrated the changes into the version in CWE.<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"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:KO">Regards,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:KO">Felix<o:p></o:p></span></p>
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<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:72.0pt"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">
<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a> <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>>
<br>
<b>Sent:</b> Monday, September 23, 2024 2:22 PM<br>
<b>To:</b> <a href="mailto:chkoo@kari.re.kr">chkoo@kari.re.kr</a>; Felix Flentge <<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>><br>
<b>Cc:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:KO">Hi Felix, Cheol, all,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:KO">I’d suggest to address this point (and any other the rest of the CFPD folks may have) until end of next week, so that afterwards I can do
my own review and if everything is ok I’ll issue the area resolution towards the CESG review necessary for starting the agency review.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:KO">Thank you all!<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="font-family:"Calibri",sans-serif;mso-fareast-language:KO"><br>
Tomaso<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:72.0pt"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">
</span><span lang="KO" style="font-family:"Malgun Gothic",sans-serif;mso-ligatures:none;mso-fareast-language:KO">구철회</span><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> <<a href="mailto:chkoo@kari.re.kr">chkoo@kari.re.kr</a>>
<br>
<b>Sent:</b> Freitag, 20. September 2024 04:13<br>
<b>To:</b> Felix Flentge <<a href="mailto:Felix.Flentge@esa.int">Felix.Flentge@esa.int</a>>; de Cola, Tomaso <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>><br>
<b>Cc:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a><br>
<b>Subject:</b> RE: [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Hi, Felix.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Thanks for the hard work. I just have some minor comments to bring similarities of writing across
all UT layers.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O SPP UT Layer
<span lang="KO">–</span> on page 3-2<o:p></o:p></span></p>
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<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.3 SPACE PACKET PROTOCOL UT LAYER<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) is there any potential needs for aggregation in this UT layer? If so, we can add it.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:32.4pt;word-break:break-all">
<b><span style="color:#00B050;mso-fareast-language:KO">FF: I didn’t see a need for aggregation for space packets (overhead is quite small). Allowing aggregation would also not be fully backward compatible with the current Magenta Book.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:32.4pt;word-break:break-all">
<b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO">Cheol: I agree.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O BP UT Layer - on page 3-5<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> 3.4.4 A CFDP UNITDATA.request shall generate a Send.request where:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:20.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> The application data unit shall
<u>be</u> an aggregation of CFDP PDU according to 3.1.4<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) to
<span lang="KO">“ </span>~ shall <b><u>be able to contain</u></b> an aggregation of CFDP PDU ~<span lang="KO">”</span> because original sentence can be interpreted as only aggregated CFDP PDUs are allowed in BP UT layer<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(suggestion) change
<span lang="KO">“</span>shall contain<span lang="KO">”</span> to <span lang="KO">
“</span>shall be able to contain<span lang="KO">”</span> through whole contents to avoid mandating of the aggregation CFDP PDUs as only allowable option<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:#00B050;mso-fareast-language:KO">FF: I would think that 3.1.4 is sufficient. I would propose to change the text
of 3.1.4 slightly to:<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:#00B050;mso-fareast-language:KO">An aggregation of CFDP PDU shall be a single CFDP PDU or a concatenation of several
complete CFDP PDU with the same destination entity ID without any additional data.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> <span style="color:red">Cheol: That would be nice! How about this change?<o:p></o:p></span></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO"> An aggregation of CFDP PDU
<u>in the context of this document means</u> a single CFDP PDU or a concatenation of several complete CFDP PDU with the same destination entity ID without any additional data.</span></b><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><b><span style="color:#3B7D23;mso-fareast-language:KO">FF: added ‘in the context of this document’ but kept the shall to remain normative.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O LTP UT Layer - on page 3-6 ~ 3.7<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:10.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> Red-part bytes is the part of the client service data
which has been sent reliably; for CFDP this will be the <u>complete client data</u><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:10.0pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) to
<span lang="KO">“</span>~~ will be the <b><u>single, complete CFDP PDU or aggregation of CFDP PDUs according to 3.1.4.</u></b><span lang="KO">”</span> to reuse sentences that are repeatedly used in other sentences and the complete client data can be ambiguous
because it could be interpreted as entire CFDP data or unit segment of CFDP PDU<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span style="color:#00B050;mso-fareast-language:KO">FF: In 3.5.1 we are just discussing the requests and indications. That we send an aggregation of CFDP PDU is coming later. I would keep
it like it is (or remove the half-sentence completely)<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:10.0pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.5.4 A CFDP UNITDATA.request shall generate a Transmission.request where:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:15.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> The client service data to send shall contain an aggregation
of CFDP PDU according to 3.1.4.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:15.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> Length of red-part shall be set to the size of the
aggregation of CFDP PDU.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> (comment) to
<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:15.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> The client service data to send shall
<b><u>be able to</u></b> contain an aggregation of CFDP PDU according to 3.1.4.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:15.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> Length of red-part shall be set to the size of
<b><u>a complete CFDP PDU or the size of aggregation of CFDP PDUs.</u></b><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> Because aggregation of CFDP PDUs in BP UT Layer and LTP UT Layer is NOT an mandate, but possibility
I think.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span style="color:#00B050;mso-fareast-language:KO">FF: see above. Being able to handle aggregation of CFDP PDU is mandatory. An implementation may decide to always have only a single CFDP PDU in the aggregation but it should be prepared to receive aggregation
with more than one.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO">Cheol: If the change for explaining the meaning of the aggregation in the BP UT layer is fine, I am OK with it.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="word-break:break-all"><b><span style="color:#3B7D23;mso-fareast-language:KO">FF: OK, I have done the proposed change above.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> 3.5.5 A RedPartReception.indication shall generate a CFDP UNITDATA.indication where:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:20.0pt;word-break:break-all">
<span lang="KO" style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">–</span><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> The CFDP protocol data unit UT_SDU shall contain the
red-part bytes, i.e. a complete aggregation of CFDP PDU according to 3.1.4.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> (comment) to
<span lang="KO">“</span>The CFDP protocol data unit UT_SDU shall contain the red-part bytes, i.e.
<b><u>a complete CFDP PDU or completed CFDP PDUs if aggregation according to 3.1.4. is applied.</u></b><span lang="KO">”</span><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span style="color:#00B050;mso-fareast-language:KO">FF: see above.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O UDP/IP UT Layer - on page 3-7<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.6.4 A CFDP UNITDATA.request shall
<u>send</u> a single UDP datagram with a single, complete CFDP PDU included in the data part.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) to
<span lang="KO">“</span>A CFDP UNITDATA.request shall <b><u>initiate sending a single, complete CFDP PDU via UDP datagram</u></b>.<span lang="KO">”</span> The theoretical limit of UDP datagram is 65535 (however, technically less than that), i.e. 64k bytes.
So if user wants to set the CFDP segmentation as bigger than 64k, this UDP UT layer implementation should support multiple UDP datagram for sending bigger CFDP PDU segmentation size. This sentence can be simplified as written in TCP/IP section.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:#00B050;mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span style="color:#00B050;mso-fareast-language:KO">FF: I disagree. Sending partial CFDP PDUs shall not be allowed, this is why we have one CFDP PDU = 1 UDP datagram.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO">Cheol: This is tricky issue. UDPCL should handle big segment size. Does BP UT layer spec document say about this issue? IMO, UDPCL implementation should
handle this regardless of action of failure, simply discarding current transaction, or trying to recover like LTP. I think this issue could be revisited someday.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><b><span style="mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><b><span style="color:#3B7D23;mso-fareast-language:KO">FF: Hmm, the maximum size of a CFDP PDU is just slightly more than 64k (header + PDU Data Field with max length of 2^16). Having CFDP PDU segmentation over
UDP would require some additional protocol on-top (eg, a small header stating that this is the beginning of a CFDP PDU or a continuation + some identification of individual PDU). I would think that this is too much unless we identify a real use case (so far,
UDP seems to be only used for testing because it is easy to drop or delay UDP datagrams).
<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"> (comment) this part also can have
<span lang="KO">“</span>3.6.5 No non-CFDP data shall be sent over a UDP datagram used by CFDP.<span lang="KO">”</span> instead of
<span lang="KO">“</span>3.6.5 Only CFDP PDU shall be sent to the UDP port of the listening CFDP application.<span lang="KO">”</span>. It<span lang="KO">’</span>s your call.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span style="color:#00B050;mso-fareast-language:KO">FF: I would keep the current formulation.<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">O TCP/IP UT Layer on page 3-8<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.7.4 A CFDP UNITDATA.request shall initiate sending a CFDP PDU via a TCP connection.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;text-indent:7.2pt;word-break:break-all">
<span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">(comment) to
<span lang="KO">“</span>A CFDP UNITDATA.request shall initiate sending a <b><u>single, complete</u></b> CFDP PDU via a TCP connection.<span lang="KO">”</span> to reuse sentences that are repeatedly used in other sentences<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span style="color:#00B050;mso-fareast-language:KO">FF: I would maybe re-phrase like : A CFDP UNITDATA.request shall initiate sending the
<u>complete</u> CFDP PDU via a TCP connection. (TCP is really different from the other protocols as it is connection-oriented and streaming).<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;text-indent:37.8pt;word-break:break-all">
<b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;color:red;mso-fareast-language:KO">Cheol: I am OK with this change. One more. TCP UT layer can take an aggregation of CFDP PDU too as it is streaming like protocol.</span></b><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:36.0pt;word-break:break-all"><b><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="word-break:break-all"><b><span style="color:#3B7D23;mso-fareast-language:KO">FF: As it is streaming, it is somehow always an aggregation. It will not really change anything on the wire while for the other ‘aggregating’ UT Layers,
aggregation has an impact on the transport structures. I see your point but would not like to change the current formulation. I have considered adding a Note to 3.7.4 but it seemed to be more confusing then helpful. (One issue that we don’t have a specified
service interface for TCP/IP we can refer to; we could talk about sockets but this may be too implementation specific / technical).
<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Thanks.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Best,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">Cheol<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO"><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:72.0pt"><b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO">From:</span></b><span style="font-family:"Calibri",sans-serif;mso-ligatures:none;mso-fareast-language:KO"> Felix Flentge
via SIS-CFDPV1 <<a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a>>
<br>
<b>Sent:</b> Tuesday, September 17, 2024 12:24 AM<br>
<b>To:</b> <a href="mailto:sis-cfdpv1@mailman.ccsds.org">sis-cfdpv1@mailman.ccsds.org</a>; Tomaso de Cola <<a href="mailto:Tomaso.deCola@dlr.de">Tomaso.deCola@dlr.de</a>><br>
<b>Subject:</b> [SIS-CFDPV1] CCSDS 722.1-M-2: CFDP Unitdata Transfer Layers - Final Draft<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal" style="margin-left:72.0pt"><span style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO">Hi,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO">I have just concluded my final edits of the update CFDP UT Layer Book:<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><a href="https://protect2.fireeye.com/v1/url?k=91fc40fc-ce672af4-91f93172-ac1f6bdccbcc-372442c791e8e917&q=1&e=233e2908-1a64-4302-84dd-141e9d11066d&u=https%3A%2F%2Fcwe.ccsds.org%2Fsis%2F_layouts%2F15%2FWopiFrame.aspx%3Fsourcedoc%3D%257B4A0292CA-C9F5-4B5D-A39F-789C158465B5%257D%26file%3D722x1m2_CFDP%2520Unitdata%2520Transfer%2520Layers%2520Magenta%2520Book%2520DRAFT-C.doc%26action%3Ddefault%26CT%3D1726499472306%26OR%3DDocLibClassicUI">722x1m2_CFDP
Unitdata Transfer Layers Magenta Book DRAFT-C.doc (ccsds.org)</a><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO">I have done the changes as discussed during the last meeting. I hope that it is now very clear that only LTP red is expected to be used (see 3.5). For BP, I had
to switch back to refer to the current (BPv6) CCSDS Blue Book (I have been too optimistic regarding the publication of the BPv7 version). However, there is a note that the same principles will apply for BPv7 (see 3.4, I think this is the best we currently
can do).<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO">I would like to submit it to the editor’s queue on 30 September (<a id="OWAAM8E459EAF3A6547C28DCA62437826996F" href="mailto:Tomaso.deCola@dlr.de"><span style="font-family:Aptos;text-decoration:none">@Tomaso
de Cola</span></a>: please let me know how the process exactly works). So, if you have any final comments, please let me know before.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:KO">Regards,<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:KO">Felix<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:72.0pt"><span lang="EN-GB" style="mso-fareast-language:KO"><o:p> </o:p></span></p>
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