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<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1"><span style="color:#1F497D">“</span><span lang="EN-GB" style="font-family:"Aptos",sans-serif">The combination of source node ID and bundle creation time stamp can serve as a unique
ID for an individual bundle.”<o:p></o:p></span></li></ul>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif">However, this is only true for unfragmented bundles. So, there is need to qualify with fragment offset and Total ADU Length, when the bundle is fragment.</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Simon Singh<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Simon.Singh@nasa.gov<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">443 538 7176 c<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> SIS-DTN <sis-dtn-bounces@mailman.ccsds.org> <b>
On Behalf Of </b>Felix Flentge via SIS-DTN<br>
<b>Sent:</b> Friday, June 28, 2024 2:23 AM<br>
<b>To:</b> Jackson, Jonathan W. (MSFC-HP27)[MOSSI2] <jonathan.w.jackson@nasa.gov>; sis-dtn@mailman.ccsds.org<br>
<b>Subject:</b> [EXTERNAL] [BULK] Re: [Sis-dtn] BPv7 RIDs and Updates<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<b><span style="font-size:10.0pt;color:black">CAUTION:</span></b><span style="color:black">
</span><span style="font-size:10.0pt;color:black">This email originated from outside of NASA. Please take care when clicking links or opening attachments. Use the "Report Message" button to report suspicious messages to the NASA SOC.</span><span style="color:black">
</span><o:p></o:p></p>
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<br>
<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif">Hi,
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif">I would propose the following wording (making clear that we are not deviating from RfC 9171 and aligning terminology):<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif">NOTE: Implementations may choose to use to manage a single, global timestamp sequence counter or manage individual timestamp sequence counters for disjunct sets of source node IDs
. Sequence counters may be reset to zero whenever the current time advances by one millisecond. The combination of source node ID and bundle creation time stamp can serve as a unique ID for an individual bundle.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif">Felix<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB" style="font-family:"Aptos",sans-serif"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-left:.5in"><b>From:</b> SIS-DTN <<a href="mailto:sis-dtn-bounces@mailman.ccsds.org">sis-dtn-bounces@mailman.ccsds.org</a>>
<b>On Behalf Of </b>Jackson, Jonathan W. (MSFC-HP27)[MOSSI2] via SIS-DTN<br>
<b>Sent:</b> Thursday, June 27, 2024 6:44 PM<br>
<b>To:</b> <a href="mailto:sis-dtn@mailman.ccsds.org">sis-dtn@mailman.ccsds.org</a><br>
<b>Subject:</b> [Sis-dtn] BPv7 RIDs and Updates<br>
<b>Importance:</b> High<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><span lang="EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:.5in">Hello All,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Attached is the updated BPv7 book and RID spreadsheet for Final Reviews.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">We’ve drafted the following <b><span style="color:#4472C4">note</span></b> for RID 115 based on our discussion during today’s telecon:<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
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<p class="MsoNormal" align="right" style="text-align:right"><b><span style="font-size:8.0pt;color:black">RID#<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:8.0pt;color:black">Paragraph Number<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:8.0pt;color:black">RID Short Title<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:8.0pt;color:black">From<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:8.0pt;color:black">To<o:p></o:p></span></b></p>
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<p class="MsoNormal"><b><span style="font-size:8.0pt;color:black">Supporting Analysis<o:p></o:p></span></b></p>
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<p class="MsoNormal" align="right" style="text-align:right"><span style="font-size:8.0pt;color:black">115<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;color:black">4.3.4<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;color:black">Creation Timestamp Sequence Number Clarification<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;color:black">The creation timestamp shall comprise the bundle creation time and the creation timestamp sequence number.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;color:black">The creation timestamp shall comprise the bundle creation time and the creation timestamp sequence number.
<br>
</span><span style="font-size:8.0pt;color:red"><br>
</span><b><span style="font-size:8.0pt;color:#4472C4">NOTE: Implementations may choose to use the source node id and the creation timestamp sequence number. However, a global counter or a separate counter for each fully qualified source node ID is possible.</span></b><span style="font-size:8.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;color:black">Without this wording there is enough ambiguity to allow for implementors to either associate the sequence number of the creation timestamp to a global counter which is the intent or on a per service
basis potentially leading to unintended behavior.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Please let me know if you have any comments or questions.<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Thanks,<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">Jonathan<o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB">This message is intended only for the recipient(s) named above. It may contain proprietary information and/or protected content. Any unauthorised disclosure, use, retention or dissemination is prohibited. If you have
received this e-mail in error, please notify the sender immediately. ESA applies appropriate organisational measures to protect personal data, in case of data privacy queries, please contact the ESA Data Protection Officer (<a href="mailto:dpo@esa.int">dpo@esa.int</a>).
<o:p></o:p></span></p>
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