FreeBSD Traffic Shaping

Mel fbsd.questions at
Tue Apr 1 23:46:52 UTC 2008

On Wednesday 02 April 2008 00:18:36 freebsd at wrote:

> I've tried dummynet but it doesn't do what I need because if I define
> a pipe with 1mbps and if I have 1000 connections, each connection will
> have less than 50kbps.
> Any way to do this in FreeBSD ?

No, unfortunately your ISP gives you bandwidth, not FreeBSD.
You can give yourself the illusion of guarenteed bandwidth using HFSC and pf 
altq, but at 500% of max bandwidth it is nothing more then an illusion. 
That's aside from the fact that HFSC only allows 75% of capacity to be 
designated as 'realtime'.


Problem with today's modular software: they start with the modules
    and never get to the software part.

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