Re: [mpls] Last Call: <draft-ietf-mpls-ldp-yang-06.txt> (YANG Data Model for MPLS LDP) to Proposed Standard

tom petch <ietfc@btconnect.com> Sun, 22 September 2019 20:48 UTC

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From: tom petch <ietfc@btconnect.com>
To: "ietf@ietf.org" <ietf@ietf.org>
CC: "mpls@ietf.org" <mpls@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "draft-ietf-mpls-ldp-yang@ietf.org" <draft-ietf-mpls-ldp-yang@ietf.org>
Thread-Topic: [mpls] Last Call: <draft-ietf-mpls-ldp-yang-06.txt> (YANG Data Model for MPLS LDP) to Proposed Standard
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Date: Sun, 22 Sep 2019 20:48:21 +0000
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Subject: Re: [mpls] Last Call: <draft-ietf-mpls-ldp-yang-06.txt> (YANG Data Model for MPLS LDP) to Proposed Standard
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s.5.2.1.1

this document recommends an operator to
   pick a routable IPv4 unicast address as an LSR Id.

I find problematic.  The YANG module has
           leaf lsr-id {
             type rt-types:router-id;
and this type is dotted quad and rightly so, since well regarded lsr
protocols have router id as a 32-bit number with no semantics i.e. this
is recommending (albeit in lower case) a paradigm shift from 32-bit
number to an IP address..

TE has come to terms with this and specifies a separate TE router-id
which is a routable IP address, v4 or v6.

I think that what this I-D has is wrong.  Perhaps it needs to do as TE
has done and separate the concepts of an ID for the router and an
address with which to access the router.

Tom Petch

----- Original Message -----
From: "The IESG" <iesg-secretary@ietf.org>;
To: "IETF-Announce" <ietf-announce@ietf.org>;
Cc: <mpls@ietf.org>;; <mpls-chairs@ietf.org>;;
<draft-ietf-mpls-ldp-yang@ietf.org>;
Sent: Friday, September 20, 2019 10:12 PM

> The IESG has received a request from the Multiprotocol Label Switching
WG
> (mpls) to consider the following document: - 'YANG Data Model for MPLS
LDP'
>   <draft-ietf-mpls-ldp-yang-06.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
> ietf@ietf.org mailing lists by 2019-10-04. 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 describes a YANG data model for Multi-Protocol Label
>    Switching (MPLS) Label Distribution Protocol (LDP).  The model also
>    serves as the base model to define Multipoint LDP (mLDP) model.
>
>    The YANG modules in this document conform to the Network Management
>    Datastore Architecture (NMDA).
>
> The file can be obtained via
> https://datatracker.ietf.org/doc/draft-ietf-mpls-ldp-yang/
>
> IESG discussion can be tracked via
> https://datatracker.ietf.org/doc/draft-ietf-mpls-ldp-yang/ballot/
>
>
> No IPR declarations have been submitted directly on this I-D.
>