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Re: [mpls] MPLS wglc draft-ietf-mpls-base-yang

tom petch <ietfc@btconnect.com> Tue, 21 January 2020 12:38 UTC

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From: tom petch <ietfc@btconnect.com>
To: Loa Andersson <loa@pi.nu>, "mpls@ietf.org" <mpls@ietf.org>
CC: "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "draft-ietf-mpls-base-yang@ietf.org" <draft-ietf-mpls-base-yang@ietf.org>
Thread-Topic: [mpls] MPLS wglc draft-ietf-mpls-base-yang
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Date: Tue, 21 Jan 2020 12:38:32 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/hU4hXyYHgqIMbnB7etdU7H3_xHE>
Subject: Re: [mpls] MPLS wglc draft-ietf-mpls-base-yang
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Some more technical thoughts on this I-D

Abstract

LSP is not in the RFC Editor list of 'so well known ...'

s.2.1
   The other MPLS route(s) that are non-IP prefix routes are modelled by
   introducing a new "mpls" address-family RIB as per recommendation .
Where is that?

s.2.2
   interfaces-mpls:
      A YANG grouping that describes the list of MPLS enabled interfaces
      on a device.

   label-blocks:
      A YANG grouping that describes the list of MPLS enabled interfaces
      on a device.

um?

YANG Module
     Copyright (c) 2018 IETF Trust

    leaf loadshare {
I  would  value a reference for this.

  grouping interface-mpls-properties {
...
      type boolean;
      description
       "'true' if mpls encapsulation is enabled on the interface.
       'false' if mpls encapsulation is enabled  on the interface.";

    leaf mtu {  type uint32; description
        "MPLS Maximum Transmission Unit (MTU) in bytes";

um what is included in MTU here  c.f.draft-ietf-netmod-intf-ext-yang-07
which  includes L2 header but not FCS in Layer 2 MTU;
a reference might help

  grouping interfaces-mpls {    description "List of MPLS interfaces";
    list interface {   key "name";  description "List of MPLS
interfaces";
      leaf name {   type if:interface-ref;
        description   "The name of a configured MPLS interface";

no conditional so every RIP or dial up X.25 e.g.is going to get this:-( probably ok

  augment "/rt:routing" {
ditto, although probably less significant

  augment "/rt:routing/rt:ribs/rt:rib/rt:routes/rt:route/"
        + "rt:next-hop/rt:next-hop-options/rt:simple-next-hop" {
    description
      "Augment 'simple-next-hop' case in IP unicast routes.";

other I-D augment control plane/protocols/static-routes

Tom Petch

________________________________________
From: mpls <mpls-bounces@ietf.org> on behalf of tom petch <ietfc@btconnect.com>
Sent: 15 January 2020 14:17
To: Loa Andersson; mpls@ietf.org
Cc: mpls-chairs@ietf.org; draft-ietf-mpls-base-yang@ietf.org
Subject: Re: [mpls] MPLS wglc draft-ietf-mpls-base-yang

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