Hi Robert, Precise interface information naturally falls out of any path computation done for traffic engineering.
Regards, Tony > On Aug 29, 2023, at 2:31 AM, Robert Raszuk <[email protected]> wrote: > > Hi Tony, > > Unless you are using precise interface based packet steering (which may not > be a great idea to start with) how do you know on which line card type your > packets arrive/exit ? > > Just curious ... > > Thx, > R. > > On Tue, Aug 29, 2023 at 4:36 AM Tony Li <[email protected] > <mailto:[email protected]>> wrote: >> >> Hi Yao, >> >> Please consider the case of a modular node with a number of different line >> cards, where the line cards are based on different forwarding engines. >> >> RLD needs to be link specific. >> >> Regards, >> Tony >> >> >>> On Aug 28, 2023, at 6:55 PM, <[email protected] >>> <mailto:[email protected]>> <[email protected] >>> <mailto:[email protected]>> wrote: >>> >>> Hi Les, >>> >>> Thanks a lot for your review and comments. >>> >>> This new MSD is a per-node capability just like ERLD-MSD, mainly because it >>> represents how many MPLS labels the node can read, and it is not related >>> with the links. >>> >>> And the description in this draft you mentioned is written taking example >>> by RFC9088(section 4. Advertising ERLD Using IS-IS). >>> >>> I'll explicitly state the scope of the new MSD in the next version. >>> >>> >>> >>> Best Regards, >>> >>> Yao >>> >>> Original >>> From: LesGinsberg(ginsberg) <[email protected] <mailto:[email protected]>> >>> To: 刘尧00165286;[email protected] <mailto:[email protected]> <[email protected] >>> <mailto:[email protected]>>;[email protected] <mailto:[email protected]> <[email protected] >>> <mailto:[email protected]>>; >>> Date: 2023年08月28日 20:57 >>> Subject: RE: [Lsr] Fw: New Version Notification for >>> draft-liu-lsr-mpls-inspection-msd-01.txt >>> Yao – >>> >>> >>> >>> Both RFC 8476(OSPF) and RFC 8491(IS-IS) define MSD advertisements with >>> per-link scope and per-node scope. >>> >>> >>> >>> Your draft only states: >>> >>> >>> >>> “If a router has multiple interfaces with different capabilities of >>> >>> reading the maximum label stack depth, the router MUST advertise the >>> >>> smallest value found across all its interfaces.” >>> >>> >>> >>> This suggests that you intend only to advertise a per-node capability – but >>> as you don’t explicitly state that – and you don’t provide a reason why a >>> per link capability isn’t applicable, I am unclear as to what your >>> intentions are here. >>> >>> >>> >>> Could you clarify whether you intend to support both per link and per node >>> capability – and if not why not? >>> >>> >>> >>> Thanx. >>> >>> >>> >>> Les >>> >>> >>> >>> >>> >>> From: Lsr <[email protected] <mailto:[email protected]>> On Behalf Of >>> [email protected] <mailto:[email protected]> >>> Sent: Monday, August 28, 2023 12:33 AM >>> To: [email protected] <mailto:[email protected]>; [email protected] <mailto:[email protected]> >>> Subject: [Lsr] Fw: New Version Notification for >>> draft-liu-lsr-mpls-inspection-msd-01.txt >>> >>> >>> >>> Hi All, >>> >>> A new version of draft-liu-lsr-mpls-inspection-msd has just been uploaded. >>> >>> In this document, a new type of MSD is defined to reflect the Readable >>> Label Depth(RLD), which helps in the MPLS MNA solution. >>> >>> In this version, the main update is that some description is added to >>> explain why a new MSD is preferred instead of the ERLD-MSD. >>> >>> Currently this new MSD is called Base MPLS Inspection MSD, it may be >>> changed to a more straightforward name like RLD-MSD based on the >>> description in the MNA architecture/solution document. >>> >>> Your comments and suggestions are more than welcome! >>> >>> >>> >>> Thanks, >>> >>> Yao >>> >>> Original >>> >>> From: [email protected] <mailto:[email protected]> >>> <[email protected] <mailto:[email protected]>> >>> >>> Date: 2023年08月28日 14:55 >>> >>> Subject: New Version Notification for >>> draft-liu-lsr-mpls-inspection-msd-01.txt >>> >>> A new version of Internet-Draft draft-liu-lsr-mpls-inspection-msd-01.txt has >>> been successfully submitted by Yao Liu and posted to the >>> IETF repository. >>> >>> Name: draft-liu-lsr-mpls-inspection-msd >>> Revision: 01 >>> Title: Signaling Base MPLS Inspection MSD >>> Date: 2023-08-27 >>> Group: Individual Submission >>> Pages: 7 >>> URL: >>> https://www.ietf.org/archive/id/draft-liu-lsr-mpls-inspection-msd-01.txt >>> Status: >>> https://datatracker.ietf.org/doc/draft-liu-lsr-mpls-inspection-msd/ >>> HTML: >>> https://www.ietf.org/archive/id/draft-liu-lsr-mpls-inspection-msd-01.html >>> HTMLized: >>> https://datatracker.ietf.org/doc/html/draft-liu-lsr-mpls-inspection-msd >>> Diff: >>> https://author-tools.ietf.org/iddiff?url2=draft-liu-lsr-mpls-inspection-msd-01 >>> >>> Abstract: >>> >>> This document defines a new type of MSD, Base MPLS Inspection MSD to >>> reflect the Readable Label Depth(RLD), and the mechanism to signal >>> this MSD using IGP and BGP-LS. >>> >>> >>> >>> The IETF Secretariat >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Lsr mailing list >>> [email protected] <mailto:[email protected]> >>> https://www.ietf.org/mailman/listinfo/lsr >> >> _______________________________________________ >> Lsr mailing list >> [email protected] <mailto:[email protected]> >> https://www.ietf.org/mailman/listinfo/lsr
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