Hi Adrian, Joel, WG, I agree with Adrain, "that in 9352, MSD should be interpreted to mean the maximum number of 128-bit entries in the Segment list, and not the number of SIDs represented". Depending on AD/ chairs preference, a clarification along these lines can be made in draft-ietf-6man-sidlist-clarification or as an RFC9352 Errata.
Thanks Regards … Zafar On 11/30/25, 5:54 AM, "Adrian Farrel" <[email protected] <mailto:[email protected]>> wrote: Hi, Coming to this thread late a wilfully jumping in half way through. Can I point you to draft-ietf-6man-sidlist-clarification? The problem identified there is that there was originally some "wooliness" with regard to terminology in 8754. - Both "SID list" and "Segment list" are used. - There is an implication (which, certainly, no longer applies) that entries in the Segment list are 128 bit IPv6 addresses. This is no attack on the authors (we were all in the room when the text was agreed) and the clarification doesn't change the technology one iota. I think that 9352 carried on this slight fuzziness. Again, no attack on the authors or the technology - we all reviewed the text. I would agree that in 9352, MSD should be interpreted to mean the maximum number of 128-bit entries in the Segment list, and not the number of SIDs represented. Cheers, Adrian Cisco Confidential -----Original Message----- From: Vasilenko Eduard <[email protected] <mailto:[email protected]>> Sent: 27 November 2025 11:08 To: LUIS MIGUEL CONTRERAS MURILLO <[email protected] <mailto:[email protected]>>; Joel Halpern <[email protected] <mailto:[email protected]>>; lsr <[email protected] <mailto:[email protected]>> Cc: Giuseppe Fioccola <[email protected] <mailto:[email protected]>>; Paolo Volpato <[email protected] <mailto:[email protected]>>; Bruno Decraene <[email protected] <mailto:[email protected]>> Subject: [Lsr] Re: Where to clarify RFC 9352 relative to SID containers Hi all, Pay attention that RFC 9532 is the normative document, all documents in BMWG are informative. I am not sure I have understood the context. I do not see the problem. Compressed SID is the "SID" too. 128bit entry inside the SRH is called "Segment List" in the RFC 8754. Hence, no problems because names are different. Eduard > -----Original Message----- > From: LUIS MIGUEL CONTRERAS MURILLO > <[email protected] > <mailto:[email protected]>> > Sent: Thursday, November 27, 2025 13:40 > To: Joel Halpern <[email protected] <mailto:[email protected]>>; lsr > <[email protected] <mailto:[email protected]>> > Cc: Giuseppe Fioccola <[email protected] > <mailto:[email protected]>>; Paolo Volpato > <[email protected] <mailto:[email protected]>>; Bruno Decraene > <[email protected] <mailto:[email protected]>>; Vasilenko > Eduard > <[email protected] <mailto:[email protected]>> > Subject: RE: [Lsr] Where to clarify RFC 9352 relative to SID containers > > Hi Joel, > > Not sure if this would be what you are looking for (especially because is an > outcome of BMWG and not LSR), but draft-ietf-bmwg-sr-bench-meth includes > proposal of segment list scale testing that could serve for the purpose you > comment (that is, adding maximum number of 128 bit pieces as an aspect to > be considered during the benchmarking process). So maybe the point that you > raise can be included here. > > I copy my co-authors in case they want to complement with additional > comments. > > Best regards > > Luis > > -----Mensaje original----- > De: Joel Halpern <[email protected] <mailto:[email protected]>> > Enviado el: jueves, 27 de noviembre de 2025 11:07 > Para: lsr <[email protected] <mailto:[email protected]>> > Asunto: [Lsr] Where to clarify RFC 9352 relative to SID containers > > AVISO/WARNING: Este correo electrónico se originó desde fuera de la > organización. No haga clic en enlaces ni abra archivos adjuntos a menos que > reconozca al remitente y sepa que el contenido es seguro / This email has > been originated from outside of the organization. Do not click links or open > attachments unless you recognize the sender and know the content is safe. > > > First, to be clear, what I am describing is NOT an error in RFC 9352. > Thus, I don't think an erratum is the appropriate way to document for future > readers this additional aspect of the intent of certain maximum segment depth > advertisements for SRv6. > > RFC 9352 talks about the maximum number of SIDs. However, when SIDs are > carried in compressed SID containers, the number that matters for some > (maybe all?) of the maximum segment depths is the number of 128 bit > pieces, not the number of SIDs. Apparently, several implementations > are consistent with that. It seems a bit odd to write another RFC just to say > that. Is there some document in process that could sensibly capture this. > > (As RFC 9352 predates the Compressed SID RFC it makes sense that this case is > not disucssed there.) > > Yours, > > Joel > > _______________________________________________ > Lsr mailing list -- [email protected] <mailto:[email protected]> > To unsubscribe send an email to [email protected] <mailto:[email protected]> > > ________________________________ > > Este mensaje y sus adjuntos se dirigen exclusivamente a su destinatario, > puede contener información privilegiada o confidencial y es para uso exclusivo > de la persona o entidad de destino. Si no es usted. el destinatario indicado, > queda notificado de que la lectura, utilización, divulgación y/o copia sin > autorización puede estar prohibida en virtud de la legislación vigente. Si ha > recibido este mensaje por error, le rogamos que nos lo comunique > inmediatamente por esta misma vía y proceda a su destrucción. > > The information contained in this transmission is confidential and privileged > information intended only for the use of the individual or entity named above. > If the reader of this message is not the intended recipient, you are hereby > notified that any dissemination, distribution or copying of this communication > is strictly prohibited. If you have received this transmission in error, do > not > read it. Please immediately reply to the sender that you have received this > communication in error and then delete it. > > Esta mensagem e seus anexos se dirigem exclusivamente ao seu destinatário, > pode conter informação privilegiada ou confidencial e é para uso exclusivo da > pessoa ou entidade de destino. Se não é vossa senhoria o destinatário > indicado, fica notificado de que a leitura, utilização, divulgação e/ou cópia > sem > autorização pode estar proibida em virtude da legislação vigente. Se recebeu > esta mensagem por erro, rogamos-lhe que nos o comunique imediatamente > por esta mesma via e proceda a sua destruição _______________________________________________ Lsr mailing list -- [email protected] <mailto:[email protected]> To unsubscribe send an email to [email protected] <mailto:[email protected]> _______________________________________________ Lsr mailing list -- [email protected] <mailto:[email protected]> To unsubscribe send an email to [email protected] <mailto:[email protected]> _______________________________________________ Lsr mailing list -- [email protected] To unsubscribe send an email to [email protected]
