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[mpls] Re: Working Group Last Call on draft-ietf-mpls-mna-hdr (2nd WG call)

Haoyu Song <haoyu.song@futurewei.com> Sat, 28 September 2024 03:11 UTC

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From: Haoyu Song <haoyu.song@futurewei.com>
To: Tony Li <tony.li@tony.li>, "Dongjie (Jimmy)" <jie.dong@huawei.com>
Thread-Topic: Working Group Last Call on draft-ietf-mpls-mna-hdr (2nd WG call)
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CC: mpls <mpls@ietf.org>, mpls-chairs <mpls-chairs@ietf.org>, "draft-ietf-mpls-mna-hdr@ietf.org" <draft-ietf-mpls-mna-hdr@ietf.org>
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Subject: [mpls] Re: Working Group Last Call on draft-ietf-mpls-mna-hdr (2nd WG call)
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MPLS WG,
Could we have Broadcom experts to provide a similar evaluation as that those folks have done using Tofino? My understanding is that the two architectures are similar so they may share the similar challenges and bottlenecks. But I may be wrong. I think a formal analysis and clarification are necessary to clear the concerns.
Thanks!
Haoyu

From: Tony Li <tony1athome@gmail.com> On Behalf Of Tony Li
Sent: Friday, September 27, 2024 12:21 AM
To: Dongjie (Jimmy) <jie.dong@huawei.com>
Cc: Tarek Saad <tsaad.net@gmail.com>; mpls <mpls@ietf.org>; mpls-chairs <mpls-chairs@ietf.org>; draft-ietf-mpls-mna-hdr@ietf.org
Subject: Re: Working Group Last Call on draft-ietf-mpls-mna-hdr (2nd WG call)


[WG chair hat: off]

Hi Jie,

That said, the issues found with the Tofino based implementation can be common. Without further implementation information, it’s hard to convince people whether those issues have be addressed or not, and whether there is new issue introduced in recent revisions.


Well, I don’t need more information.  We’ve had Broadcom look it over. They raised no issues. We’ve had our internal folks look it over. They have no issues. I’m sure others have done the same.

I will happily and unilaterally disclose that the Procket NPU would have no issues with it (with adequate recirculation — 1999 technology), but then finding a Procket NPU these days is rather challenging. I will also happily vouch that a Z-80, Motorola 68000, or x86 would also have no issues with it.

If you feel that implementation experience is important, please feel free to share your experience.

Regards,
Tony

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