Re: [ns] RED min_th

[Tan Koan-Sin <freedom@csie.nctu.edu.tw>]

If you want to keep the pipe full even when you only
have one TCP flows. The queueing capacity should be 
no smaller than the bandwidth-delay product [1].

You probably want to read Sally Floyd's RED page [2].

[1] Villamizar, C., and Song, C.,  High Performance TCP in ANSNET. 
    Computer Communications Review, V. 24 N. 5, October 1994, p. 45-60.
[2] http://www.aciri.org/floyd/red.html

On Wed, Aug 08, 2001 at 01:02:32PM -0700, M S wrote:
> I read somewhere (but forgot as to where) that the RED
> minimum threshold must be set the following way:
> 
> min_th = 
> avg time you want pkt to wait in queue X (linkspeed/pkt size)
> 
> How valid is this?
> RED paper states that min_th must be set large enuf to allow
> link utilization to be maintained at a high level. 
> So for FTP traffic could some one give me a math expression
> like the one given above for determining min_th (if there is
> any).
> 
> thanks
> ms.
> 
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