DAST: Iperf - Large difference in bandwidth - mpkline --at-- hotmail.com (fwd)

To: Iperf Users <iperf-users --at-- dast.nlanr.net>
Subject: DAST: Iperf - Large difference in bandwidth - mpkline --at-- hotmail.com (fwd)
From: "John S. Estabrook" <jestabro --at-- ncsa.uiuc.edu>
Date: Wed, 7 Mar 2007 13:51:13 -0600 (CST)
Cc: mpkline --at-- hotmail.com
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John S. Estabrook
jestabro --at-- ncsa.uiuc.edu


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Date: Wed, 07 Mar 2007 13:49:42 -0600
From: WWW daemon apache <wwwrun --at-- ncsa.uiuc.edu>
To: mpkline --at-- hotmail.com
Subject: DAST: Iperf - Large difference in bandwidth - mpkline --at--
    hotmail.com


Contacting DAST re: Request for information about Iperf
From: Mike  Kline <mpkline --at-- hotmail.com>

Subject: Large difference in bandwidth

Question/Comment:
I ran the windows based version 1.7 iperf program accross windows XP workstations connected on each end of the country via an OC-3. I also ran the program between two workstations on each site. When the program was used locally, I could max out at approxiamtely 95Mbits per worstation. When I tried to go workstation to workstation over the OC-3, I could go one way (west to east) using TCP at 256K to 1024K up to 35 Mb to 50Mb bandwidth, but going the other way on the return test, my bandwidth would only go between 2 - 4 Mb. Do you have any ideas why, or further documentation that may explain my issues.

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