Re: [Lsr] Congestion (flow) control thoughts.

"Gengxuesong (Geng Xuesong)" <gengxuesong@huawei.com> Fri, 08 May 2020 08:31 UTC

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From: "Gengxuesong (Geng Xuesong)" <gengxuesong@huawei.com>
To: "tony.li@tony.li" <tony.li@tony.li>
CC: "lsr@ietf.org" <lsr@ietf.org>, Christian Hopps <chopps@chopps.org>
Thread-Topic: [Lsr] Congestion (flow) control thoughts.
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Date: Fri, 8 May 2020 08:31:35 +0000
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References: <sa6r1w6h446.fsf@stubbs.int.chopps.org> <8016231f9ff94bd2b0f5ef989608922f@huawei.com> <DD8160ED-5131-40D3-AA12-D4810C26B9BA@tony.li> <21e4996c370b475db4eb4e7ffc298434@huawei.com> <364EDB68-ABA4-4AA9-910E-065A15DB0965@tony.li> <f62a652c6b6a489faef754697670aaa0@huawei.com> <0B3A2CF5-559C-4C49-93FD-9FE116D049DE@tony.li>
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Subject: Re: [Lsr] Congestion (flow) control thoughts.
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Clear, thanks!

> -----Original Message-----
> From: Tony Li [mailto:tony1athome@gmail.com] On Behalf Of tony.li@tony.li
> Sent: Thursday, May 7, 2020 11:28 PM
> To: Gengxuesong (Geng Xuesong) <gengxuesong@huawei.com>
> Cc: lsr@ietf.org; Christian Hopps <chopps@chopps.org>
> Subject: Re: [Lsr] Congestion (flow) control thoughts.
> 
> 
> Hi Xuesong,
> 
> > I agree that "minimal flooding time " is a good choice, which may differ from
> the traditional cc in layer 4, which is difficult to get the completion time for
> each flow.
> > I am still a little confused about " fast brand X needs to not overrun slow
> brand Y while performing well with fast brand Z". Is this talking about
> interoperation between different company device, which may use different
> type of cc mechanism?
> 
> 
> Yes, I’m talking about interoperability.
> 
> Normally, in this working group, interoperability implies that each
> implementation is sending and receiving correctly formatted packets and
> computing correctly. This particular item adds in one other degree of
> complexity: timeliness. An implementation must be able to go fast or slow,
> depending on the needs of the receiver.
> 
> Tony