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Re: [mpls] Poll 2: New SPL vs re-purposed ELI for carrying Network Action Indicators

Rakesh Gandhi <rgandhi.ietf@gmail.com> Fri, 10 June 2022 12:02 UTC

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From: Rakesh Gandhi <rgandhi.ietf@gmail.com>
Date: Fri, 10 Jun 2022 08:02:28 -0400
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To: Loa Andersson <loa@pi.nu>
Cc: "mpls@ietf.org" <mpls@ietf.org>, "mpls-chairs@ietf.org" <mpls-chairs@ietf.org>, "pals-chairs@ietf.org" <pals-chairs@ietf.org>, DetNet Chairs <detnet-chairs@ietf.org>
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Subject: Re: [mpls] Poll 2: New SPL vs re-purposed ELI for carrying Network Action Indicators
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Hi Loa,



A lot of investment has been gone in developing protocol extensions,
developing and deploying products over the last ~10 years (and still
on-going) for the Entropy Label (ELI=7) support since it became a standard
[RFC6790].



Hope WG takes a direction of leveraging the large investment instead of
taking a direction of reinventing the wheels (e.g. a new bSPL + Entropy
Label, etc.).



Hope WG can progress the draft [1] that defines the mechanisms to leverage
the Entropy Label (LSE) that can address the new use-cases mentioned in the
draft [1] in a backwards compatible manner.



[1]
https://datatracker.ietf.org/doc/draft-decraene-mpls-slid-encoded-entropy-label-id/



Thanks,

Rakesh






On Mon, May 30, 2022 at 5:21 PM Loa Andersson <loa@pi.nu> wrote:

> MPLS Working Group, MPLS Open DT,
>
> The MPLS Network Actions (MNA) framework requires a method of indicating
> the presence of a Network Action and any Ancillary Data.
>
> Is the consensus of the working group that we do this by:
>
>    (1) allocating a new SPL for Network Action Indicators?
>
>    (2) re-purposing the ELI SPL?
>
>    (3) using some other method of indicating this such as making it an
>        additional property of an ordinary label?
>
> Please respond to the MPLS WG mail list.
>
> Loa Andersson
> for the Open DT wg chairs
>
> --
> Loa Andersson                        email: loa@pi.nu
> Senior MPLS Expert                          loa.pi.nu@gmail.com
> Bronze Dragon Consulting             phone: +46 739 81 21 64
>
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