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From: Andreas Hasenack <ahasenack@terra.com.br>
To: lartc@vger.kernel.org
Subject: Re: [LARTC] Tocken Bucket with priority?
Date: Wed, 05 Apr 2006 13:24:20 +0000	[thread overview]
Message-ID: <20060405132419.GH3839@mandriva.com> (raw)
In-Reply-To: <e67264960604050618t481a1f79uffe3065ac2ebe56f@mail.gmail.com>

On Wed, Apr 05, 2006 at 03:18:06PM +0200, Emanuele Colombo wrote:
> Hi. I'm trying to get a traffic shaper like this:
> 
> 
>                     ------
>   VoIP pkts    -->        |    |_|
>                     ------  \   |
>                              ---O ->
>                     ------  /
>   Data pkts    -->        |
>                     ------
> 
> In this shaper voip packets are in a different queue than any other kind of
> packet. I want a data packet to be served only when no packets are in the
> voip queue (when voip queue is empty).
> Furthermore the total traffic that leaves this shaper needs to be limited to
> a specific (and precise) value of bandwidth, like a token bucket.
> 
> 
> I can't use something like this (PRIO + TBF) because in this way when "data
> congestion" happens, voip packets may be lost too(packet drop appens on the
> TBF queue):
> 
>                     ------
>   VoIP pkts    -->        |               |_|
>                     ------  \     -----    |
>                              O --->    |---O ->
>                     ------  /     -----
>   Data pkts    -->        |
>                     ------
> 
> I also can't use HTB because it doesn't provide a priority mechanism like my
> needs, and CBQ because his bandwidth limiting algorithm isn't very precise
> (according to the documentation).

What about using HTB and *then* using PRIO as its leaf class? You would
use HTB only to shape.


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  reply	other threads:[~2006-04-05 13:24 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-04-05 13:18 [LARTC] Tocken Bucket with priority? Emanuele Colombo
2006-04-05 13:24 ` Andreas Hasenack [this message]
2006-04-05 14:41 ` Emanuele Colombo
2006-04-06 14:27 ` Emanuele Colombo
2006-04-07 15:13 ` Martin A. Brown
2006-04-07 19:57 ` Jason Boxman
2006-04-08 10:37 ` Emanuele Colombo
2006-04-08 10:43 ` Emanuele Colombo

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