[e2e] A "Railway Model." Re: Codel and Wireless
Jon Crowcroft
Jon.Crowcroft at cl.cam.ac.uk
Sat Dec 7 08:04:00 PST 2013
you might want to read about how people use layer two congestion
signaling from L2 (only) switches to give feedback to TCP which then
uses a distributed scheduler to avoid the incast problem alluded to...
yes, gasp, layer violation - but it works. so engineers like it
In missive <52A339EA.7000907 at web.de>, Detlef Bosau typed:
>>Am 07.12.2013 13:12, schrieb Neil Davies:
>>> Actually, with worm-hole routed fabrics you can achieve better than 67% [1] for random paths with the right switching architecture.
>>>
>>Nevertheless, Andrew mixed up the layers.
>>
>>I'm talking about TCP or equivalent protocols. Not about Layer 2. And
>>neither about Ethernet pause frames.
>>So, perhaps Andrew wants to have a second look to what I suggested.
>>(I gave it more than two thoughts before I wrote it, so one could give
>>it two attempts in reading it ;-))
>>
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cheers
jon
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