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Date:      Sat, 06 Sep 2003 16:25:58 +0100
From:      Peter V Coates-Buglear <>
To:        Ivo Vachkov <>
Subject:   Re: Burst
Message-ID:  <>
References:  <>

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Something like this should work using probability with a pipe rule

ipfw add prob 0.33 pipe 1 ip from A to B
ipfw add pipe 2 ip from A to B
ipfw pipe 1 config ...
ipfw pipe 2 config ...


Ivo Vachkov wrote:
> Hi all,
> I've been doing some research on traffic shaping features on several platforms and I coudn't find is there a way to implement *burst* on FreeBSD. I know Cisco has it and Linux (iproute2/tc + TBF) has it, but none of the BSD seems to have similar feature (at least I couldn't find ...).
> So can you point me out a way to implement such using IPFW+Dummynet if one exists. Thank you in advance.
>         Ivo Vachkov
> P.S. I wrote some code to implement burst using divert(4) sockets, but it's still too bare. If you can point me documentation, descibing traffic engeneering techniques/algorithms I'll be thankfull too

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