Re: [mpls] draft-decraene-mpls-slid-encoded-entropy-label-id (was RE: Please review the PALS/MPLS/DetNet Joint Session minutes)

Tony,





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From: Tony Li <[email protected]> On Behalf Of Tony Li
Sent: Friday, April 1, 2022 7:49 PM
To: DECRAENE Bruno INNOV/NET <[email protected]>
Cc: John E Drake <[email protected]>; mpls <[email protected]>; detnet WG <[email protected]>; [email protected]; Henderickx, Wim (Nokia - BE/Antwerp) <[email protected]>; Greg Mirsky <[email protected]>
Subject: Re: [mpls] [Pals] draft-decraene-mpls-slid-encoded-entropy-label-id (was RE: Please review the PALS/MPLS/DetNet Joint Session minutes)


Bruno,



- again draft-decraene-mpls-slid-encoded-entropy-label-id can be extended to support in-stack data if needed (this has been expressed multiple times) i.e. if post-stack data is found not to be enough.


Extending your proposal to support in-stack data effectively puts us at draft-jags-mpls-ext-hdr-00, with the backward compatibility issues that we've discussed. That is, IMHO, no longer in the realm of acceptable risk.
[Bruno] Extending the proposal to add LSE requires signaling that the Egress support that capability. Solutions requiring a new SPL requires a similar signaling. In both cases, I don't think that this may be called a backward compatibility issue, if but so, I think the statement equally applies to other proposals defining a new SPL

--Bruno

Tony


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