[e2e] end2end bandwidth estimation

[David P. Reed]

Many applications are rate limited, not rate limited due to window size 
limitation.

Available bandwidth estimation presumably is useful, for example, to 
predict the latency of a burst of size N that might be overlaid on top of a 
collection of rate limited traffic that does not fill up a path's 
bottleneck capacity.

At 04:28 PM 7/21/2003 -0500, Vivek Rai wrote:

>Hi,
>
>         The end2end bandwidth estimation problem is categorized in three 
> main ways
>depending on its applications:
>1. Bottleneck bandwidth estimation
>2. Available bandwidth estimation
>3. Bulk Transfer Capacity estimation
>
>         There will be a sizable "available bandwith" along a link only if the
>flows traversing it are inelastic or they are rate limited due to maximum
>window size limitation. Since the Internet mostly comprises of the elastic
>traffic therefore the first assumption seems to be improbable whereas second
>assumption suggests that the links along the path are underprovisioned. In
>any case i am not able to understand what are the possible applications of
>measuring the available bandwidth.
>
>Thanks,
>Vivek