[Lsr] Signalling ERLD (ISIS, OSPF and BGP-LS)

"Van De Velde, Gunter (Nokia - BE/Antwerp)" <gunter.van_de_velde@nokia.com> Tue, 12 June 2018 13:57 UTC

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From: "Van De Velde, Gunter (Nokia - BE/Antwerp)" <gunter.van_de_velde@nokia.com>
To: "idr@ietf.org" <idr@ietf.org>, "lsr@ietf.org" <lsr@ietf.org>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: Signalling ERLD (ISIS, OSPF and BGP-LS)
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Date: Tue, 12 Jun 2018 13:57:50 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/lsr/H7QR__iJ0tFR4V_i_Gc67vyDejE>
Subject: [Lsr] Signalling ERLD (ISIS, OSPF and BGP-LS)
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In LSR WG the following drafts document the signaling of ELC and RLD:
* draft-ietf-ospf-mpls-elc
* draft-ietf-isis-mpls-elc

When exporting this information using BGP-LS encoding to a controller, there is need for BGP-LS extension by means of new TLVs.

BGP-LS is signaling ERLD (entropy capable readable label depth)
ISIS/OSPF is signaling individually ELC and RLD

I was working upon the IANA section, and discovered some inconsistency that should be addressed:
* Why is IGP signaling individual ELC and RLD? ERLD is what was decided upon (https://tools.ietf.org/html/draft-ietf-mpls-spring-entropy-label-10)
* What are the plans to request IANA code points for these drafts?
* (E)RLD seems to have meaning only from NODE perspective, (I assume that LINK ERLD is not of any value at all, is that a correct assumption?)

G/


-----Original Message-----
From: Idr [mailto:idr-bounces@ietf.org] On Behalf Of internet-drafts@ietf.org
Sent: Tuesday, June 12, 2018 15:25
To: i-d-announce@ietf.org
Cc: idr@ietf.org
Subject: [Idr] I-D Action: draft-ietf-idr-bgp-ls-segment-routing-rld-02.txt


A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Inter-Domain Routing WG of the IETF.

        Title           : Signalling ERLD using BGP-LS
        Authors         : Gunter Van de Velde
                          Wim Henderickx
                          Matthew Bocci
                          Keyur Patel
	Filename        : draft-ietf-idr-bgp-ls-segment-routing-rld-02.txt
	Pages           : 6
	Date            : 2018-06-12

Abstract:
   This document defines the attribute encoding to use for BGP-LS to
   expose ERLD "Entropy capable Readable Label Depth" from a node to a
   centralised controller (PCE/SDN).



The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-idr-bgp-ls-segment-routing-rld/

There are also htmlized versions available at:
https://tools.ietf.org/html/draft-ietf-idr-bgp-ls-segment-routing-rld-02
https://datatracker.ietf.org/doc/html/draft-ietf-idr-bgp-ls-segment-routing-rld-02

A diff from the previous version is available at:
https://www.ietf.org/rfcdiff?url2=draft-ietf-idr-bgp-ls-segment-routing-rld-02


Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/

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