[Iccrg] Proposal for ICCRG operations

[Saverio Mascolo]

see in line...

On Sat, 2006-02-04 at 11:50 -0800, Nandita Dukkipati wrote:
> Here's my take on the questions put forth by Keshav. For now I will
> limit my answers to elastic traffic.
> 
> >  A. What is the commonly agreed definition for congestion. (I will
> > post
> > my suggestion later today). If we do not agree on a definition, then
> > indices
> > are meaningless.
> 
> 
> * A network-centric definition of congestion: Congestion is anything
> that deviates significantly from an efficient and fair usage of the
> network resources --- mostly network bandwidth and buffers.
> * User-centric definition: From an user's view point what really
> matters is how quickly does my flow finish, so congestion is long
> flow-completion times. Often, it isn't the per-packet latency that
> users care about, but just how fast the entire flow completes.
> 
> >     B. What's wrong with TCP's congestion control scheme. Does
> > someone have
> > a concise summary that they can post here? I am sure this will be a
> > cut-and-paste job for someone who has written a paper on congestion
> > control
> > recently :-)
> 
> 
> Here's one list:

>  1. Unsustainable large equilibrium window sizes under high
> bandwidth-delay product environments; requires an unrealistically low
> loss probability.

do we have some numbers here? what is the bit error rate range that we
can assume  realistic in 10Gbps links?

saverio