Hi Tony, Do you know any product that supports different label (or SID) stacks on different PFEs? (Not mandatory to disclose the vendor) I remember many major upgrades for many vendors and all the time the whole router supported the “common denominator”. Of course, it is possible to develop code and micro-code to support different label stacks on different PFEs but looks like no one vendor has found a business case for such a big development program. PS: I am not sure, I may missed a good example. Eduard From: Lsr [mailto:[email protected]] On Behalf Of Tony Li Sent: Tuesday, August 29, 2023 5:36 AM To: [email protected] Cc: Les Ginsberg <[email protected]>; mpls <[email protected]>; [email protected] Subject: Re: [Lsr] New Version Notification for draft-liu-lsr-mpls-inspection-msd-01.txt
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] <[email protected]<mailto:[email protected]>>;[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
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