Re: [RPRWG] Merits of Open Loop
Adisak,
The purpose was not to focus on terminology. Open loop is from point of
view of the congested node. It does not send feedback messages to other
nodes, short of dropping packets. End hosts discover congestion through time
outs. TCP is of course the protocol in mind.
Siamack
Adisak Mekkittikul wrote:
> Siamack,
>
> What's do you mean by " open loop congestion controls"?
> Are you implying that there are open loop systems in today's networks
> that being controlled?
>
> Adisak
>
> -----Original Message-----
> From: Siamack Ayandeh [mailto:sayandeh@xxxxxxxxxx]
> Sent: Monday, August 06, 2001 8:02 AM
> To: stds-802-17@xxxxxxxx
> Cc: sayandeh@xxxxxxxxxx
> Subject: [RPRWG] Merits of Open Loop
>
> Folks,
>
> As some people are busy doing simulations and writing proposals for the
> San Jose meeting, I am posting this presentation early on the
> reflector. It describes the merits of open loop congestion controls and
> may impact some of the simulation scenarios that would be presented.
> The main conclusions of the document are that:
>
> - Congestion avoidance algorithms may lead to static partitioning of the
> ring bandwidth between high and low priority traffic
> - With CA it may not be possible to bound the ring access delay of high
> priority traffic
> - Open loop does not suffer from HOL blocking
> - Open loop has relatively low configuration and operational complexity
> - Open loop is not prone to tuning issues, or link aggregation, etc...
>
> Regards, Siamack
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