Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-slid-encoded-entropy-label-id (was RE: Please review the PALS/MPLS/DetNet Joint Session minutes)
John E Drake <jdrake@juniper.net> Wed, 30 March 2022 20:02 UTC
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From: John E Drake <jdrake@juniper.net>
To: "Henderickx, Wim (Nokia - BE/Antwerp)" <wim.henderickx@nokia.com>, "bruno.decraene@orange.com" <bruno.decraene@orange.com>
CC: mpls <mpls@ietf.org>, detnet WG <detnet@ietf.org>, "pals@ietf.org" <pals@ietf.org>
Thread-Topic: [mpls] [Pals] draft-decraene-mpls-slid-encoded-entropy-label-id (was RE: Please review the PALS/MPLS/DetNet Joint Session minutes)
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Date: Wed, 30 Mar 2022 20:02:36 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/detnet/YrBIEkY_Gzt18S2WJZ_B1e66LgA>
Subject: Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-slid-encoded-entropy-label-id (was RE: Please review the PALS/MPLS/DetNet Joint Session minutes)
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Wim, I think I would term it a thought experiment. An RFC 6790 compliant node will take the value in the EL label field and use it to select an outgoing interface. If the value in the EL field is a slice ID, such an node will select an outgoing interface which is not necessarily part of the slice in question and that outgoing interface will be to a node which is not necessarily part of the slice in question. Yours Irrespectively, John Juniper Business Use Only From: Henderickx, Wim (Nokia - BE/Antwerp) <wim.henderickx@nokia.com> Sent: Wednesday, March 30, 2022 3:21 PM To: John E Drake <jdrake@juniper.net>; bruno.decraene@orange.com Cc: mpls <mpls@ietf.org>; detnet WG <detnet@ietf.org>; pals@ietf.org Subject: Re: [mpls] [Pals] draft-decraene-mpls-slid-encoded-entropy-label-id (was RE: Please review the PALS/MPLS/DetNet Joint Session minutes) [External Email. Be cautious of content] John, do you have evidence of this or is this a theoretical claim ? From: mpls <mpls-bounces@ietf.org<mailto:mpls-bounces@ietf.org>> on behalf of John E Drake <jdrake=40juniper.net@dmarc.ietf.org<mailto:jdrake=40juniper.net@dmarc.ietf.org>> Date: Wednesday, 30 March 2022 at 19:13 To: bruno.decraene@orange.com<mailto:bruno.decraene@orange.com> <bruno.decraene@orange.com<mailto:bruno.decraene@orange.com>> Cc: mpls <mpls@ietf.org<mailto:mpls@ietf.org>>, detnet WG <detnet@ietf.org<mailto:detnet@ietf.org>>, pals@ietf.org<mailto:pals@ietf.org> <pals@ietf.org<mailto:pals@ietf.org>> Subject: Re: [mpls] [Pals] draft-decraene-mpls-slid-encoded-entropy-label-id (was RE: Please review the PALS/MPLS/DetNet Joint Session minutes) Except that putting a slice ID in the Entropy Label field will break existing ELI/EL Implementations because their hashing of the slice ID won’t necessarily place a packet on the correct outgoing I/F Sent from my iPhone On Mar 30, 2022, at 1:00 PM, bruno.decraene@orange.com<mailto:bruno.decraene@orange.com> wrote: [External Email. Be cautious of content] From: Tony Li <tony1athome@gmail.com<mailto:tony1athome@gmail.com>> On Behalf Of Tony Li Sent: Wednesday, March 30, 2022 4:08 PM > [Kireeti]: suggest attending talk by Tony on danger of reusing ELI before making any decision. https://notes.ietf.org/notes-ietf-113-pals<https://urldefense.com/v3/__https:/notes.ietf.org/notes-ietf-113-pals__;!!NEt6yMaO-gk!Sw9ofU9AyD7Z-JKwyAqMlHk5xhNLxZNMSu31Yt6-K7yh-6JehvlSPLDcqrP3gOo$> Done. The talk raised no “danger of reusing ELI” for draft draft-decraene-mpls-slid-encoded-entropy-label-id; quite the contrary. I quote: “claims of backward compatibility apply to draft-decraene-mpls-slid-encoded-entropy-label-id-03”. With more details on slide 18 https://datatracker.ietf.org/meeting/113/materials/slides-113-mpls-05-policy-on-mpls-special-purpose-labels-reuse-00<https://urldefense.com/v3/__https:/datatracker.ietf.org/meeting/113/materials/slides-113-mpls-05-policy-on-mpls-special-purpose-labels-reuse-00__;!!NEt6yMaO-gk!Sw9ofU9AyD7Z-JKwyAqMlHk5xhNLxZNMSu31Yt6-K7yh-6JehvlSPLDcNEC7QKk$> Yes, the issue with this proposal is that it has no space for in-stack data and not enough space for possible expansion of additional actions. [Bruno] There are two steps: - This proposal allows for carrying 8 Indicators and a slice ID while been backward compatible with egress LER hance providing faster deployment with incremental benefit. - If more in-stack data is required the proposal is extensible (e.g. draft-jags-mpls-ext-hdr) but at the cost of losing the above benefits for the ASes & uses-cases requiring more than 8 Indicators per AS or In-Stack Data. So we can have both worlds: simple first step and extensibility for those who need it. Independently, we also/already have the post stack data option to carry ancillary data, which may limit the need for In-Stack data extension. --Bruno Tony Orange Restricted _________________________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. 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- [Detnet] draft-decraene-mpls-slid-encoded-entropy… bruno.decraene
- Re: [Detnet] [mpls] draft-decraene-mpls-slid-enco… Tony Li
- Re: [Detnet] [mpls] draft-decraene-mpls-slid-enco… bruno.decraene
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Henderickx, Wim (Nokia - BE/Antwerp)
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… Greg Mirsky
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Henderickx, Wim (Nokia - BE/Antwerp)
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Gyan Mishra
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… Rajesh Pandey
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Gyan Mishra
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Greg Mirsky
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Tony Li
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… Greg Mirsky
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Greg Mirsky
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Henderickx, Wim (Nokia - BE/Antwerp)
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Tony Li
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Henderickx, Wim (Nokia - BE/Antwerp)
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Haoyu Song
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Tony Li
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… Gyan Mishra
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Henderickx, Wim (Nokia - BE/Antwerp)
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Tony Li
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Tony Li
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Tony Li
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Tony Li
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Greg Mirsky
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… Greg Mirsky
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… John E Drake
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Robert Raszuk
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Gyan Mishra
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Gyan Mishra
- Re: [Detnet] [Pals] [mpls] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… bruno.decraene
- Re: [Detnet] [mpls] [Pals] draft-decraene-mpls-sl… Gyan Mishra