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Date: Mon, 14 Feb 2005 09:58:29 +0200
From: Andrew Lewis <al@xms.co.za>
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Subject: Re: ping -f differences in pinging windows 2003 and FreeBSD
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Hi,

On Sun, 13 Feb 2005 22:45:28 +0100 (CET)
"Gelsema, Patrick" <gelsema@superhero.nl> wrote:

> I've got the following kit running; FreeBsd 5.3Release-p5,
> 4.10-RELEASE-p2, Windows XP SP2, Syslinux and Windows 2003 SP1.
> 
> They all are connected to a 3com 100mbit Hub. All machines 100Mbit
> HalfDuplex.
> 
> When I execute the ping -f command from 5.3 to 4.10 I am getting a ~18%
> packetloss, the same when I execute the command from 4.10 to 5.3.
> 
> However when I ping -f the Windows 2003 server, the Syslinux Firewall or
> Windows XP I am lucky if at least 10 packets are dropped.

You may find reach some different results using a different value for the net.inet.icmp.icmplim sysctl (number of ICMP packets per second).

-AL.