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 From:  "Seth Martin" <SethM at turbinegenerator dot com>
 To:  <m0n0wall at lists dot m0n0 dot ch>
 Subject:  RE: [m0n0wall] Traffic Shaper Latency Issues.
 Date:  Tue, 9 Aug 2005 11:40:38 -0400
We are on an full T1 with a /27 subnet.  I have two pipes and 2 rules
setup (which work but cause latency) one filters all traffic to and from
a terminal server at and one that filters all traffic NOT
to or from the terminal server at ip  It works fine, I
can watch on m0n0mon the bandwidth when a load is put to the TS being
restricted to 250k, and other bandwidth to like say the mail server
being trunked off at 1000k.  We get 1.54 megs with the T1 so I'm well
under the bandwidth I can use as I wish up or down.  We have a data
server that hosts up half a TB that syncs between locations so I like to
leave the 1000k pip open to flow in either direction as files have to be

-----Original Message-----
From: Chris Bagnall [mailto:m0n0wall at minotaur dot cc] 
Sent: Tuesday, August 09, 2005 10:56 AM
To: Seth Martin
Subject: RE: [m0n0wall] Traffic Shaper Latency Issues.

Try playing around with the sizes of your upstream pipes. When I was
configuring the traffic shaper at a client's premises for VoIP purposes
found that the actual upstream was quite different from the ISP's quoted
upstream. Well worth using a test tool to find out what the exact
upstream bandwidth you have to play with is.

Even a small change of 5kb in upstream pipe size dropped latency from
900ms at some busy times down to sub-50ms as I'd expect from DSL.


C.M. Bagnall, Director, Minotaur I.T. Limited
Tel: (07010) 710715   Mobile: (07811) 332969   Skype: minotaur-uk
ICQ: 13350579   AIM: MinotaurUK   MSN: msn at minotaur dot cc   Y!:
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