[altq 46] About WFQ performance...

[hlj@brasilnet.net]

Dear Srs,

I guess am a little off-topic about this but...

I have WFQ activated in a 2mbps internet link on a serial line of

a Cisco router.  Several hosts utilize this link without any control

of link utilization.  Sometimes, the band utilization is about 90 % and

i have some clients (hosts) claiming that " the internet is slow for me "

when viewing some home pages from the internet.

I have to proff that it is now because some hosts are "stealing" bandwidth

from the others (the bad guy would be "stealing" the bandwidth by downloading

large files by ftp from the internet).

As far as I know, the Weighted Fair Queuing puts bursty traffic at the end of

the queuing avoiding someone from "stealing" bandwidth from the others.

At what point i am right about it ?  Would it be possible that (even under

WFQ rules) the fact that someone is downloading something by ftp is causing

the others (who are trying to view home pages:80) to get slow on their

connection (considering that the total bandwidth utilization is only about 90%)?

I had no time to install a protocol analyzer to see what type of traffic is

"almost" (90%) fullfilling my link, does someone here has full understanding of 

the Weighted Fair Queuing functionality ? I would like to know if I have to

change my bandwidth to 4mbps or the claiming hosts are just getting slow because

of the source of their data and not because of someone downloading files by ftp.

I can't believe that WFQ would permit a ftp client "stealing" bandwidth from the

others.


Thank you in advance,

Helio Luchtenberg Junior
hlj@brasilnet.net

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E-Mail: hlj@brasilnet.net
Date: 20-Jun-99
Time: 13:33:54

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