[e2e] Historical question: Link layer flow control / silent discard

Detlef Bosau detlef.bosau at web.de
Sat May 25 03:39:48 PDT 2013


Am 24.05.2013 21:22, schrieb Bob Braden:
> On 5/24/2013 10:48 AM, Noel Chiappa wrote:
>>
>>
>> Source quench turned out not to work (for reasons I don't recall 
>> clearly any
>> more -
>
> Noel,
>
> Jon Postel really wanted Source Quench to work. Walt Prue under Jon 
> Postel's direction
>  made an exhaustive study of possible source quench
> algorithms  in their RFC 1016,  July 1987, with the hopeful title:
>
>     "Something a Host Could Do with Source Quench:
>         The Source Quench Introduced Delay (SQuID)
>
> The following sentence from that document says it all;
>
>   "All of our algorithms oscillate, some worse than others." 

Source quench made the sender decrease it's rate, correct?

So, with source quench, congestion control was achieved rate based 
instead of window based as in VJCC? Is this understanding correct?


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