Re: [Pals] Endpoint-ID in draft https://datatracker.ietf.org/doc/html/draft-schmutzer-pals-ple-signaling-00

"Andrew G. Malis" <agmalis@gmail.com> Thu, 09 November 2023 14:35 UTC

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From: "Andrew G. Malis" <agmalis@gmail.com>
Date: Thu, 09 Nov 2023 09:34:49 -0500
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To: Alexander Vainshtein <Alexander.Vainshtein@rbbn.com>
Cc: "Christian Schmutzer (cschmutz)" <cschmutz@cisco.com>, "pals@ietf.org" <pals@ietf.org>, "bess@ietf.org" <bess@ietf.org>, Stewart Bryant <stewart.bryant@gmail.com>
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Subject: Re: [Pals] Endpoint-ID in draft https://datatracker.ietf.org/doc/html/draft-schmutzer-pals-ple-signaling-00
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Christian and Sasha,

Section 7 of RFC 4842 discusses the actions taken when you have trace
mismatch conditions as well as other SONET/SDH-layer failures. Perhaps this
text should be adapted to draft-ietf-pals-ple as well.

Cheers,
Andy


On Thu, Nov 9, 2023 at 8:34 AM Alexander Vainshtein <
Alexander.Vainshtein@rbbn.com> wrote:

> Christian and all,
>
> Repeating the gist of my comments on the PLE Signaling draft
> <https://datatracker.ietf.org/doc/html/draft-schmutzer-pals-ple-signaling-00>
> at the MPLS WG session in Prague today.
>
>
>
> I think that Endpoint-ID defined in Section 5.5. of this draft is not
> needed.
>
>
>
> If you want the endpoints of a PLE to be aware of the remote AC, you can
> use the generalized PWId FEC
> <https://datatracker.ietf.org/doc/html/rfc8077#section-6.2> a.k.a.
> FEC-129) for this purpose.
>
>
>
> I also think that your reference to Path Trace Identifier in OTN is not
> really accurate:
>
>    1. This construct has been already defined for SONET and SDH
>    2. Mismatch of Path Trace Identifier, if enabled, results in killing
>    he traffic (generation of downstream AIS) in both SONET/SDH and OTN.
>       1. I have not found any action on mismatch of Endpoint-IDs in the
>       draft
>       2. Mismatch of AII in FEC-129 would result in failure to establish
>       a PW.
>
>
>
> Hopefully these notes will be useful.
>
>
>
>
>
> Regards,
>
> Sasha
>
>
>
>
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