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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Hi Felix, Cheol, 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">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"><span style="font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif">Thank you all!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"><br>
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> Freitag, 20. September 2024 04:13<br>
<b>To:</b> Felix Flentge <Felix.Flentge@esa.int>; de Cola, Tomaso <Tomaso.deCola@dlr.de><br>
<b>Cc:</b> sis-cfdpv1@mailman.ccsds.org<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">Hi, Felix.<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>
<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 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="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"><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>
<p class="MsoNormal" style="text-indent:7.2pt;word-break:break-all"><span style="font-size:10.0pt;font-family:"Malgun Gothic",sans-serif;mso-fareast-language:KO">3.3 SPACE PACKET PROTOCOL UT LAYER<o:p></o:p></span></p>
<p class="MsoNormal" style="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="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"><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"><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="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="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="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="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="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"><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"><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="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="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="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="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="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="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="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="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="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="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="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"><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="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="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="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"><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"><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="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="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="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"><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="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"><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"><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="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="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="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"><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"><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="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="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"><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>
<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 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>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB">Hi,<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 just concluded my final edits of the update CFDP UT Layer Book:<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"><a href="https://protect2.fireeye.com/v1/url?k=01554586-5ece2f8e-01503408-ac1f6bdccbcc-28675b83a745346e&q=1&e=d0fdfab3-219b-4fdd-b906-62106b2a63f5&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"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">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"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB">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"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:EN-GB">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="mso-ligatures:none;mso-fareast-language:EN-GB">Felix<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB"><o:p> </o:p></span></p>
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