Re: [mpls] Last Call: <draft-ietf-mpls-base-yang-14.txt> (A YANG Data Model for MPLS Base) to Proposed Standard

Thanks Tom.

As you mentioned, the authors shared their perspective on this at WGLC.
We believe it is proper for RFC8349 to allow augmentation with a proper leaf that identifies the route depending on RIB address-family - MPLS RIB routes are identified with a local label.
We submitted an errata against RFC8349 at https://www.rfc-editor.org/errata/eid6251

Regards,
Tarek (for the authors)

On 8/6/20, 4:31 AM, "tom petch" <daedulus@btconnect.com> wrote:

    This I-D breaks a MUST in RFC8349 Routing Management) and, as such, will 
    not interoperate with devices that implement RFC8349 correctly.
		1
    RFC8349 provides a YANG action to return the active route for a 
    destination address but omits the destination address, saying that 
    modules using this must augment the input with a leaf 
    destination-address.  This I-D augments the input with a leaf 
    local-label so implementations of RFC8349 that 'know' there will be a 
    leaf destination-address will fail to interoperate with this I-D.

    The authors said, at WGLC, that RFC8349 is wrong, that MPLS has label 
    not address and so the I-D must provide an augment with a label and 
    RFC8349 should change.  I disagree; I think that this is reading too 
    many semantics into an identifier.

    Tom Petch

    On 05/08/2020 18:04, The IESG wrote:
    >
    > The IESG has received a request from the Multiprotocol Label Switching WG
    > (mpls) to consider the following document: - 'A YANG Data Model for MPLS Base'
    >    <draft-ietf-mpls-base-yang-14.txt> as Proposed Standard
    >
    > The IESG plans to make a decision in the next few weeks, and solicits final
    > comments on this action. Please send substantive comments to the
    > last-call@ietf.org mailing lists by 2020-08-19. Exceptionally, comments may
    > be sent to iesg@ietf.org instead. In either case, please retain the beginning
    > of the Subject line to allow automated sorting.
    >
    > Abstract
    >
    >
    >     This document contains a specification of the MPLS base YANG model.
    >     The MPLS base YANG model serves as a base framework for configuring
    >     and managing an MPLS switching subsystem on an MPLS-enabled router.
    >     It is expected that other MPLS YANG models (e.g.  MPLS Label Switched
    >     Path (LSP) Static, LDP or RSVP-TE YANG models) will augment the MPLS
    >     base YANG model.
    >
    >
    >
    >
    > The file can be obtained via
    > https://datatracker.ietf.org/doc/draft-ietf-mpls-base-yang/
    >
    >
    >
    > No IPR declarations have been submitted directly on this I-D.
    >
    >
    >
    >
    >
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