[e2e] Why do we need congestion control?

Fred Baker (fred) fred at cisco.com
Wed Apr 10 13:44:26 PDT 2013

On Apr 10, 2013, at 1:06 PM, Daniel Havey <dhavey at yahoo.com>

>> In the face of this, what I don't understand is why this
>> thread has gone on for so long.  Surely it should be
>> allowed to die, given that the core -- possibly reasonable
>> -- concern was long-ago answered.
> So I don't understand this.  The so called "bufferbloat" problem is solved in the core?  But pragmatically speaking it still exists?  This wont get me a PhD, but, one has to ask, why?  Does the core drop segments?  Or does it buffer them?

It does. Not often, but it does when it needs to.


Most buffer bloat behavior is at the edge - WiFi, Mobile telephone, broadband. There are other cases. But think about dumbbell networks - two fast networks connected by something slower. That's where you'll find it.

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