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 From:  "Chad R. Larson" <clarson at eldocomp dot com>
 To:  Dennis Wallberg <dennis dot wallberg at bredband dot net>
 Cc:  "m0n0wall at lists dot m0n0 dot ch" <m0n0wall at lists dot m0n0 dot ch>
 Subject:  Re: SV: [m0n0wall] Re: m0n0 - traffic_shaper
 Date:  Wed, 2 Jun 2004 17:17:02 -0700
Dennis Wallberg wrote:

> I was not saying that inbound traffic shaping did not work just that it
> is not sane to use inbound shaping when you have a xDSL/cable I-net
> connection. The reason is simple, you donít have anything to do with
> your inbound traffic unless you are ISP... limiting inbound traffic will
> not achieve anything unless you have control of the edge routers which
> you normally donít.

Unless... [wait for it]...

Your ISP charges you if your bandwidth usage goes above some 
threshold.  For example, AT&T sells bandwidth in their co-lo center in 
1 Mbps increments.  We're buying 2 Mbps in and out.  They keep a 
sliding 5 minute accounting window, and if 95% of our traffic exceeds 
2 Mbps during that 5 minutes, we get hit with a serious penalty.

Inbound shaping prevents that from happening.  We up our purchased 
bandwidth (and the m0n0wall pipe size) when the customers get too 

Chad R. Larson (CRL22)    chad at eldocomp dot com
   Eldorado Computing, Inc.   602-604-3100
      5353 North 16th Street, Suite 400
        Phoenix, Arizona   85016-3228


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