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Date:      Wed, 2 Oct 2002 11:40:57 -0600 (MDT)
From:      Randy Smith <randys@amigo.net>
To:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   IPFW & DUMMYNET shaping 4.6.2-R - Speed limited to half of pipe limit
Message-ID:  <20020916120405.Y11652-100000@stalker.amigo.net>

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Hi all,

I am using IPFW and DUMMYNET to do traffic shaping on 4.6.2-R gateway
(uname -a below). I have set the upload to 800Kbit/s and the download to
1500Kbit/s. Here is the relevent section from ipfw.conf.

add 500 pipe 1 ip from 192.169.91.16:255.255.255.240 to any pipe 1 config bw 800Kbit/s
add 500 pipe 2 ip from any to 192.168.91.16:255.255.255.240 pipe 2 config bw 1500Kbit/s

If I've read the docs correctly, the network 192.168.91.16/240 should have
it's upload limited to 800Kbs it's download to 1500Kbs. However, MRTG is
reporting that the upload traffic is maxing out at around 400Kbs.

I have played with the upload speed and the connection always maxes out at
about half of what I set it to.

My questions:
1) How do I get the traffic limited to the bw I set it to?
2) What is causing this?
3) Would changing/setting the queuing method help?

# uname -a
FreeBSD gateway.xxxxxxxxxxxx.net 4.6.2-RELEASE FreeBSD 4.6.2-RELEASE #2:
Mon Aug 19 19:06:07 MDT 2002
root@xxxxxxxxxxxxx.net:/usr/obj/usr/src/sys/PROXY  i386

Thank you for your help in this matter.

ps. Please CC me as I am not subscribed to this list.

-- 
Randy Smith
Amigo.Net Systems Administrator
1-719-589-6100 x 4185
http://www.amigo.net/




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