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

"UTTARO, JAMES" <ju1738@att.com> Tue, 31 May 2022 14:48 UTC

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From: "UTTARO, JAMES" <ju1738@att.com>
To: Greg Mirsky <gregimirsky@gmail.com>, 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>
Thread-Topic: [mpls] Poll 2: New SPL vs re-purposed ELI for carrying Network Action Indicators
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Date: Tue, 31 May 2022 14:47:37 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/mpls/zlclh_jXjaKYXbxmzt09A-MTv3s>
Subject: Re: [mpls] Poll 2: New SPL vs re-purposed ELI for carrying Network Action Indicators
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ELI has a specific purpose and is in use in operators networks. IMO re-using ELI is a non-starter..

Thanks,
          Jim Uttaro

From: mpls <mpls-bounces@ietf.org> On Behalf Of Greg Mirsky
Sent: Tuesday, May 31, 2022 10:44 AM
To: Loa Andersson <loa@pi.nu>
Cc: mpls@ietf.org; mpls-chairs@ietf.org; pals-chairs@ietf.org; DetNet Chairs <detnet-chairs@ietf.org>
Subject: Re: [mpls] Poll 2: New SPL vs re-purposed ELI for carrying Network Action Indicators

Dear Loa, MPLS WG Chairs, Open DT, et al.,
I believe that re-using ELI to address the requirements listed in draft-ietf-mpls-miad-mna-requirements will definitely break implementations of RFC 6790 and RFC 8662. Thus I oppose re-using ELI to indicate the presence of an MNA in a packet. I think that the specifics of the mechanism indicating the presence of an MNA should be discussed separately from the framework document.

Regards,
Greg

On Mon, May 30, 2022 at 2:21 PM Loa Andersson <loa@pi.nu<mailto: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<mailto:loa@pi.nu>
Senior MPLS Expert                          loa.pi.nu@gmail.com<mailto:loa.pi.nu@gmail.com>
Bronze Dragon Consulting             phone: +46 739 81 21 64

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