[e2e] TCP Loss Differentiation

Sergey Gorinsky gorinsky at arl.wustl.edu
Sat Feb 21 07:08:27 PST 2009

   Dear David and Fred,

   A small buffer offers small delay to delay-sensitive traffic.
Throughput-greedy traffic is served through another, bigger buffer
at a higher per-flow rate. The two-buffer forwarding gives
the senders complete freedom in choosing between
the two best-effort services of larger throughput versus
low queuing delay:

"RD Network Services: Differentiation through Performance Incentives"
by Maxim Podlesny and Sergey Gorinsky,
Proceedings of ACM SIGCOMM 2008, pp. 255-266, August 2008,

The architecture is an attempt at throughput-delay differentiation
designed explicitly for incremental deployment in the multi-provider

   Thank you,


> On 20 Feb 2009, at 18:10, Fred Baker wrote:
>> On Feb 19, 2009, at 9:55 PM, David P. Reed wrote:
>>> Fred, you are right.  Let's get ECN done.  Get your company to take the 
>>> lead.
>> ECN has been in the field, in some products, for the better part of a 
>> decade. Next step; get ISPs to turn it on. The products that don't support 
>> it don't because our customers tell us they don't need it (nobody is paying 
>> them to turn it on) or are simply not asking for it.

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