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Re: [tsvwg] Classifying on ECT(1) (was: Adoption call for draft-white-tsvwg-l4sops - to conclude 24th March 2021)

Ruediger.Geib@telekom.de Wed, 24 March 2021 06:56 UTC

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From: Ruediger.Geib@telekom.de
To: slblake@petri-meat.com
CC: tsvwg@ietf.org
Thread-Topic: [tsvwg] Classifying on ECT(1) (was: Adoption call for draft-white-tsvwg-l4sops - to conclude 24th March 2021)
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Subject: Re: [tsvwg] Classifying on ECT(1) (was: Adoption call for draft-white-tsvwg-l4sops - to conclude 24th March 2021)
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Hi Steve,

I'd suggest to concentrate on routers present at interconnection / IP-layer (if an operator doesn't participate in an L4S experiment and you assume presence of L4S traffic, peering and transit interconnections likely act as sources, I assume). Juniper PTX is designed as a Label Switch Router. It can be deployed on IP layer too, but as far as I recall, its capabilities are limited as compared to Juniper MX.

Regards, Ruediger

-----Ursprüngliche Nachricht-----
Von: tsvwg <tsvwg-bounces@ietf.org> Im Auftrag von Steven Blake
Gesendet: Mittwoch, 24. März 2021 01:07
An: Tilmans, Olivier (Nokia - BE/Antwerp) <olivier.tilmans@nokia-bell-labs.com>
Cc: tsvwg@ietf.org
Betreff: Re: [tsvwg] Classifying on ECT(1) (was: Adoption call for draft-white-tsvwg-l4sops - to conclude 24th March 2021)

On Tue, 2021-03-23 at 10:06 +0000, Tilmans, Olivier (Nokia -
BE/Antwerp) wrote:
> Hi,
> 
>  > Sec. 4 (Operator of a Network) of the draft presumes that deployed  
> > equipment is capable to classifying packets specifically on ECT(1).
>  > Have the authors confirmed that this feature is available on 
> commonly  > deployed operator gear (e.g., IOS-XR, JUNOS)?
> 
> FPM on IOS/flexible-match firewall filters on Junos enable you to 
> classify  based on arbitrary bit masks, and use classification results 
> as usual, e.g., map to qos-groups/CoS/VRF/...
> 
> The associated deployment complexity/feasibility will of course vary 
> on a config by config basis, i.e., your NOC is likely your best source 
> of answers.
> 
> 
> Best,
> Olivier

Thanks. Are you sure FPM is supported on IOS-XR? I'm not finding any evidence of that. I'm not finding any evidence that it is supported on Juniper PTX boxes, either, and the story for MX boxes seems confusing.

Since this is critical to enabling operators (not participating in an
experiment) to protect themselves from L4S traffic, it would be worthwhile to confirm this capability is widely available on deployed gear. Perhaps the draft could include some configuration information in an appendix?


Regards,

// Steve

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