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

여엉 NOSPAM_yschoi at palgong.knu.ac.kr
Fri Jun 6 23:46:30 PDT 2003


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




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