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Re: [tcpm] IETF 114 TCPM WG - NG TCPM Yang Model

Michael Tuexen <michael.tuexen@lurchi.franken.de> Tue, 26 July 2022 22:19 UTC

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From: Michael Tuexen <michael.tuexen@lurchi.franken.de>
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Date: Wed, 27 Jul 2022 00:19:49 +0200
Cc: Jeffrey Haas <jhaas@pfrc.org>, Robert Raszuk <robert@raszuk.net>, "Scharf, Michael" <Michael.Scharf@hs-esslingen.de>, Susan Hares <shares@ndzh.com>, "Van De Velde, Gunter (Nokia - BE/Antwerp)" <gunter.van_de_velde@nokia.com>, tcpm IETF list <tcpm@ietf.org>, Joe Touch <touch@strayalpha.com>
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To: Gyan Mishra <hayabusagsm@gmail.com>
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Subject: Re: [tcpm] IETF 114 TCPM WG - NG TCPM Yang Model
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> 
> 
> Dear TCPM
> 
> Attached is the slide deck for the NG TCP Yang model discussion.
> 
> Sue, Robert, Jeff, Gunter 
> 
> Please review and let me know if I missed any talking points for the NG TCP Yang model.
A couple of clarifying questions related to slide "What to add to NG TCP Yang Model?",
especially since I know almost nothing about YANG:

• All TCP states part of the FSM state machine.
Understood.
• All TCP flags and respective states.
Do you mean the TCP flags SYN, FIN, PSH, ... Does a YANG module all to describe
packets sent and received?
• All TCP parameters that would be accessible with a local OS kernel hook.
Doesn't that mean the complete set of state variable the kernel has and isn't that implementation dependent?
• All windowing parameters including window scaling as well as any windowing related optimizations.
You mean the receiver window including the window scaling.
• All TCP options and optimizations set such as Selective ACK.
I guess you mean the set of TCP extensions which have been negotiated.
• All TCP slow start congestion control parameters CWIN etc.
There are a multiple Congestion Controls, even ones not being specified by the IETF.
So this might get very hard to do. Or do you require a specific CC when using TCP for BGP?

Best regards
Michael
> 
> Thanks 
> 
> Gyan
> 
> ---------- Forwarded message ---------
> From: Mishra, Gyan S <gyan.s.mishra@verizon.com>
> Date: Mon, Jul 25, 2022 at 11:36 PM
> Subject: IETF 114 TCPM WG - NG TCPM Yang Model
> To: Hayabusanew <hayabusagsm@gmail.com>
> 
> 
> -- 
> 
> 
> Gyan Mishra
> Network Solutions Architect 
> Email gyan.s.mishra@verizon.com
> M 301 502-1347
> 
> 
> <IETF-114 TCPM TCP Yang Model.pdf>_______________________________________________
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> tcpm@ietf.org
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