[Detnet] Routing directorate early review of draft-ietf-detnet-mpls-oam
Jon Hardwick <jonhardwick@microsoft.com> Mon, 12 December 2022 15:59 UTC
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From: Jon Hardwick <jonhardwick@microsoft.com>
To: "detnet-chairs@ietf.org" <detnet-chairs@ietf.org>, "draft-ietf-detnet-mpls-oam.all@ietf.org" <draft-ietf-detnet-mpls-oam.all@ietf.org>
CC: "rtg-dir@ietf.org" <rtg-dir@ietf.org>, "detnet@ietf.org" <detnet@ietf.org>
Thread-Topic: Routing directorate early review of draft-ietf-detnet-mpls-oam
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Date: Mon, 12 Dec 2022 15:59:30 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/detnet/WvD_896WUHemziATJdf7mtJcsc0>
Subject: [Detnet] Routing directorate early review of draft-ietf-detnet-mpls-oam
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Hi there I have been selected to do a routing directorate "early" review of this draft. draft-ietf-detnet-mpls-oam-09 - Operations, Administration and Maintenance (OAM) for Deterministic Networks (DetNet) with MPLS Data Plane<https://datatracker.ietf.org/doc/draft-ietf-detnet-mpls-oam/09/> The routing directorate will, on request from the working group chair, perform an "early" review of a draft before it is submitted for publication to the IESG. The early review can be performed at any time during the draft's lifetime as a working group document. The purpose of the early review depends on the stage that the document has reached. As this document is already post working group last call, my focus for the review was to determine whether the document is ready to be published. For more information about the routing area directorate, please see RtgDir - Routing Area Wiki (ietf.org)<https://trac.ietf.org/trac/rtg/wiki/RtgDir>. Summary I have some minor concerns about this document that I think should be resolved before the publication process begins. Comments Section 3.1 Channel type - please give a reference to the actual online registry URL. The discussions of the following fields are very brief. I can see what they are used for, but it is not clear to me how these will be used. Can you add more in the way of specification, or are there any references that you can give? * Node ID * Level * Session ID Section 3.2 Which bits are intended by "28 MSBs of the d-ACH"? I think this probably means the 28 most significant bits of the first 32-bit word of the header (that is, bits 4 to 31 inclusive). I think there is a chance that people may interpret this as "the first 28 bits of the packet in network order" (that is, bits 0 to 27 inclusive). I suggest identifying the bits explicitly, e.g., 4 to 31. Section 4.1 The following are not very clear to me, and I think need to be specified in more detail. * Active OAM test packet MUST be mapped to the same TSN Stream ID as the monitored DetNet flow. How is this to be done? Is the mapping configured? * Active OAM test packets MUST be treated in the TSN domain based on its S-label and CoS marking (TC field value). What must be done in the TSN domain based on the settings of these fields? Is there an inverse, where these fields must be inferred from some fields in the TSN domain?
- [Detnet] Routing directorate early review of draf… Jon Hardwick
- Re: [Detnet] Routing directorate early review of … Greg Mirsky
- Re: [Detnet] [EXTERNAL] Re: Routing directorate e… Jon Hardwick
- Re: [Detnet] [EXTERNAL] Re: Routing directorate e… Greg Mirsky