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<p class="MsoNormal">I believe one of the main reasons for the switch of custody transfer to BIBE is the inability to meaningfully/properly set the custody transfer retransmission timer in BPv6. This happens because at the Bundle Layer there is no way to tell
which route a bundle will take to destination, or whether it will be fragmented on its way to it, so it is impossible to figure out what is a good value of the retransmit timer.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">BIBE is supposed to be a convergence layer for the Bundle Protocol which acts as a hop-to-hop protocol rather than an end-to-end protocol. Therefore, since in BIBE you know explicitly which is the destination node to which the bundle will
be sent, and there is no possibility for further fragmentation, you can have a better idea of the correct value for the retransmission timer (much like in LTP).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">BIBE’s other motivation is security. By allowing you to encapsulate a bundle within another bundle, you can achieve functionality that is similar to a VPN in which encapsulated bundles are fully encrypted and possibly authenticated (fully
meaning that both the payload and the header are encrypted).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">-----------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal">Marc Sanchez Net<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:gray">Telecommunications Engineer</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;color:gray">Jet Propulsion Laboratory<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10.0pt;color:gray">Office:</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#222222"> </span><a href="tel:(818)%20393-5840" target="_blank"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#0070C0">(818)
354-1650</span></a><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#0070C0">
</span><span style="font-size:10.0pt;color:gray">|</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#0070C0">
</span><span style="font-size:10.0pt;color:gray">Email:</span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#222222"> </span><a href="mailto:marc.sanchez.net@jpl.nasa.gov"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">marc.sanchez.net@jpl.nasa.gov</span></a><span style="font-size:9.5pt;font-family:"Arial",sans-serif;color:#222222"><o:p></o:p></span></p>
<p class="MsoNormal">-----------------------------------------------------------------------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>From:</b> SIS-DTN <sis-dtn-bounces@mailman.ccsds.org> <b>
On Behalf Of </b>Simon Singh<br>
<b>Sent:</b> Friday, August 20, 2021 8:09 AM<br>
<b>To:</b> Pitts, Robert L. (MSFC-HP27)[HOSC SERVICES CONTRACT] <robert.l.pitts@nasa.gov><br>
<b>Cc:</b> sis-dtn@mailman.ccsds.org<br>
<b>Subject:</b> Re: [Sis-dtn] [EXTERNAL] Custody Transfer query<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks Lee.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I came across this, probably from Scott Burleigh. Any idea about "<b>serious potential operational anomalies."</b><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">"<span style="font-family:Symbol">·</span><span style="font-size:7.0pt;font-family:"Times New Roman",serif">
</span>The “<b>custody transfer</b>” function is removed from BP and is defined instead in a new bundle-in-bundle encapsulation specification, to improve its efficiency and address several
<b>serious potential operational anomalies</b>."<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">Best regards<o:p></o:p></p>
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<p class="MsoNormal">Simon Singh<o:p></o:p></p>
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<p class="MsoNormal">+1 443 538 7176 Cell<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">On Fri, Aug 20, 2021 at 8:16 AM Pitts, Robert L. (MSFC-HP27)[HOSC SERVICES CONTRACT] <<a href="mailto:robert.l.pitts@nasa.gov">robert.l.pitts@nasa.gov</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">I don’t know the exact reason but it was initiated in the IETF. Scott may be a better source.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D">Lee</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b>From:</b> 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>Simon Singh<br>
<b>Sent:</b> Friday, August 20, 2021 1:52 AM<br>
<b>To:</b> Blanding, Beau T. (MSFC-HP27)[HOSC SERVICES CONTRACT] <<a href="mailto:beau.t.blanding@nasa.gov" target="_blank">beau.t.blanding@nasa.gov</a>>;
<a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a><br>
<b>Subject:</b> [EXTERNAL] [Sis-dtn] Custody Transfer query<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I would appreciate it if someone can provide insight regarding the following query.. Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">What was the motivation to move from BP6 style of custody transfer to one using BIBE?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Best regards<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Simon Singh<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">+1 443 538 7176 Cell<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On Thu, Aug 12, 2021 at 7:58 AM Blanding, Beau T. (MSFC-HP27)[HOSC SERVICES CONTRACT] via SIS-DTN <<a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">sis-dtn@mailman.ccsds.org</a>>
wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Good morning all,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Attached are BPv7 Red Book Discussion Topics from MSFC. We (MSFC) provide our opinions on how the topics listed within should be managed. Please provide your input via email on
these topics so that we may take them into account as we write sections for the BPv7 book. If we run into a discussion that isn’t resolving over email, we will resolve in the SIS-DTN forum.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:16.0pt">Beau Blanding</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">HOSC Systems Engineer<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">MSFC 4663, Office C121<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a href="mailto:beau.t.blanding@nasa.gov" target="_blank">beau.t.blanding@nasa.gov</a><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">-----Original Appointment-----<br>
<b>From:</b> Dr. Keith L Scott <<a href="mailto:kscott@mitre.org" target="_blank">kscott@mitre.org</a>>
<br>
<b>Sent:</b> Wednesday, April 7, 2021 9:47 AM<br>
<b>To:</b> Dr. Keith L Scott; <a href="mailto:sis-dtn@mailman.ccsds.org" target="_blank">
sis-dtn@mailman.ccsds.org</a><br>
<b>Cc:</b> Navas, Tiffany A. (GSFC-581.0)[MTI SYSTEMS, INC.]; Torgerson, J. Leigh (JPL-332C)[JPL Employee]; HAMILTON, PAUL A. (JSC-EV811); Matusow, Carla L. (GSFC-4502); Strege, Susanne L. (GSFC-5830); LACY, SETH L DR-04 USAF AFMC AFRL/RVEN; Mayer, Jeremy P.
(JSC-OT/ESA)[EUROPEAN SPACE AGENCY]; Burleigh, Scott C (JPL-312B)[JPL Employee]; Deaton, Joshua E. (MSFC-HP27)[HOSC SERVICES CONTRACT];
<a href="mailto:Gian.Paolo.Calzolari@esa.int" target="_blank">Gian.Paolo.Calzolari@esa.int</a>;
<a href="mailto:Felix.Flentge@esa.int" target="_blank">Felix.Flentge@esa.int</a>; Bryant, Deann (MSFC-HP27); Wright, James R. (MSFC-HP27)[BIOSERVE Univ of CO]; George, Sandy (MSFC-IS40)[NICS]; Heiner, Sarah E.; Kazmi, Syeda A. (GSFC-5830);
<a href="mailto:Tomaso.deCola@dlr.de" target="_blank">Tomaso.deCola@dlr.de</a>; Durkin, Alexander E. (GSFC-5830)<br>
<b>Subject:</b> [EXTERNAL] [Sis-dtn] SIS-DTN Telecon<br>
<b>When:</b> Wednesday, August 11, 2021 11:00 AM-12:00 PM (UTC-05:00) Eastern Time (US & Canada).<br>
<b>Where:</b> Microsoft Teams Meeting<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">20210407 – Just refreshing the calendar invite in case it got dropped somewhere.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Folks,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’d like to set up some recurring SIS-DTN meetings to talk about our current work items. I’ve set these for every 2 weeks; if it looks like we don’t need to meet that often I’ll
drop it down to monthly.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’m proposing Wednesdays 11am; I get that this time won’t work for everyone, but let’s see how many can make it and if we have to we’ll hunt for a different time.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> v/r,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> --keith<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#5F5F5F">________________________________________________________________________________</span>
<o:p></o:p></p>
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<div style="margin-bottom:3.0pt">
<div style="margin-bottom:3.0pt">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#252424">Or call in (audio only)</span></b><span style="font-family:"Segoe UI",sans-serif;color:#252424">
</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Segoe UI",sans-serif;color:#252424"><a href="tel:+15404925664,,269972841" target="_blank"><span style="font-size:10.5pt;color:#6264A7">+1 540-492-5664,,269972841#</span></a>
</span><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#252424"> United States, Roanoke
</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:"Segoe UI",sans-serif;color:#252424">Phone Conference ID:
</span><span style="font-family:"Segoe UI",sans-serif;color:#252424">269 972 841#
</span><o:p></o:p></p>
<div style="margin-bottom:15.0pt">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Segoe UI",sans-serif;color:#252424"><a href="https://urldefense.us/v3/__https:/gcc02.safelinks.protection.outlook.com/?url=https*3A*2F*2Fdialin.teams.microsoft.com*2Ff5bf125e-1b0d-470e-aae7-f8fc6f64035e*3Fid*3D269972841&data=04*7C01*7Crobert.l.pitts*40nasa.gov*7C6ebc85dc7a9e4385411308d963a7140a*7C7005d45845be48ae8140d43da96dd17b*7C0*7C0*7C637650391517341316*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C1000&sdata=r*2FfQXMQ*2B5D7C*2BsLBPQoVTZmnsS8SnRC7i*2BkbcEHMGIo*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSU!!PvBDto6Hs4WbVuu7!bbanjnFcGoz3smEvpMoKd5dhVLg0OXN-kz_VOp8hAwyD3fSBA0qhCyB3g15UGE-Jx_iexYF7$" target="_blank"><span style="font-size:10.5pt;color:#6264A7">Find
a local number</span></a> | <a href="https://urldefense.us/v3/__https:/gcc02.safelinks.protection.outlook.com/?url=https*3A*2F*2Fmysettings.lync.com*2Fpstnconferencing&data=04*7C01*7Crobert.l.pitts*40nasa.gov*7C6ebc85dc7a9e4385411308d963a7140a*7C7005d45845be48ae8140d43da96dd17b*7C0*7C0*7C637650391517341316*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C1000&sdata=NnFrl2Jdp7GrdXQ0p0IMCnYYBD3RgGJVqdrObA7Ha8Q*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSU!!PvBDto6Hs4WbVuu7!bbanjnFcGoz3smEvpMoKd5dhVLg0OXN-kz_VOp8hAwyD3fSBA0qhCyB3g15UGE-Jx9VxOouf$" target="_blank">
<span style="font-size:10.5pt;color:#6264A7">Reset PIN</span></a> </span><o:p></o:p></p>
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<div style="margin-top:15.0pt;margin-bottom:.25in">
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Segoe UI",sans-serif;color:#252424"><a href="https://urldefense.us/v3/__https:/gcc02.safelinks.protection.outlook.com/?url=https*3A*2F*2Faka.ms*2FJoinTeamsMeeting&data=04*7C01*7Crobert.l.pitts*40nasa.gov*7C6ebc85dc7a9e4385411308d963a7140a*7C7005d45845be48ae8140d43da96dd17b*7C0*7C0*7C637650391517351275*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C1000&sdata=JC3vkfbSfVqNbnl9TGeFe6ZsAoIR*2Fxyt47*2FkYQ2dtnI*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJQ!!PvBDto6Hs4WbVuu7!bbanjnFcGoz3smEvpMoKd5dhVLg0OXN-kz_VOp8hAwyD3fSBA0qhCyB3g15UGE-Jx_LLiZRg$" target="_blank"><span style="font-size:10.5pt;color:#6264A7">Learn
More</span></a> | <a href="https://urldefense.us/v3/__https:/gcc02.safelinks.protection.outlook.com/?url=https*3A*2F*2Fteams.microsoft.com*2FmeetingOptions*2F*3ForganizerId*3Dce1a1a67-2690-4431-9ee8-aa55d8855316*26tenantId*3Dc620dc48-1d50-4952-8b39-df4d54d74d82*26threadId*3D19_meeting_ZTYwZDliYzUtNGFiOS00N2MwLTg1ZGYtNTU2NWY2NjdkMGYz*40thread.v2*26messageId*3D0*26language*3Den-US&data=04*7C01*7Crobert.l.pitts*40nasa.gov*7C6ebc85dc7a9e4385411308d963a7140a*7C7005d45845be48ae8140d43da96dd17b*7C0*7C0*7C637650391517351275*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C1000&sdata=*2BVKyGxinwwpOBdT1ZLxLZKAO29ttvsDMXBRRATli5OQ*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUl!!PvBDto6Hs4WbVuu7!bbanjnFcGoz3smEvpMoKd5dhVLg0OXN-kz_VOp8hAwyD3fSBA0qhCyB3g15UGE-JxynXiYRc$" target="_blank">
<span style="font-size:10.5pt;color:#6264A7">Meeting options</span></a> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="color:#5F5F5F">________________________________________________________________________________</span>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">_______________________________________________<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://urldefense.us/v3/__https:/gcc02.safelinks.protection.outlook.com/?url=https*3A*2F*2Fmailman.ccsds.org*2Fcgi-bin*2Fmailman*2Flistinfo*2Fsis-dtn&data=04*7C01*7Crobert.l.pitts*40nasa.gov*7C6ebc85dc7a9e4385411308d963a7140a*7C7005d45845be48ae8140d43da96dd17b*7C0*7C0*7C637650391517361232*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C1000&sdata=RXC70U7zlr6nh5ie2yXyQNHklO*2Frn7IK*2BoeWp*2B*2FX878*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUlJSUl!!PvBDto6Hs4WbVuu7!bbanjnFcGoz3smEvpMoKd5dhVLg0OXN-kz_VOp8hAwyD3fSBA0qhCyB3g15UGE-Jx6d7hW6m$" target="_blank">https://mailman.ccsds.org/cgi-bin/mailman/listinfo/sis-dtn</a><o:p></o:p></p>
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