[e2e] Detect or avoid Congestion (by Bandwidth or Queue length)

[Huaizhong Han]

Hi, the fundamental difference is  in one case RTT has transmission delay
and queuing delay. but in another case, RTT has only transmission delay.
Huaizhong

----- Original Message -----
From: "여엉" <NOSPAM_yschoi at palgong.knu.ac.kr>
To: "E2E" <end2end-interest at postel.org>
Sent: Saturday, June 07, 2003 2:46 AM
Subject: [e2e] Detect or avoid Congestion (by Bandwidth or Queue length)


> Hi.
>
> As far as I know,
>
> RED and its varints use Queue length to prevent or detect congestion.
>
> And
>
> Virtual Queue or Adaptive Virtual Queue use Bandwidth. (Sum of Input
Traffic
> Rates/Output link rate, target utilization, etc...)
>
> What is differnece between Queue length and Bandiwidth?
>
> Is there any "fundamental " advantage or disadvantage in using queue
length
> for congestion detection? (
> Implementation complexity? link utilization?)
>
> Thx in advance
>
> --
> Young
>