On 4/30/2010 8:49 AM, Jeff wrote:
> There are better tools than a simple iperf server:
>
> http://psps.perfsonar.net/toolkit/
There is also http://netalyzr.icsi.berkeley.edu/ which is an excellent
connectivity check, although your mileage may vary with higher-speed
bandwidth testing from it.
Jeff
Jeff wrote:
The problem is the Faculty^Wusers are smart, but not experienced in
networking, so they buy into the marketing and eye candy of the speed
dials on the Speakeasy and assorted speed testing tool sites.
Not just them, we are constantly dealing with our new HS users who go to
those s
On 4/30/10 3:15 AM, Steve Bertrand wrote:
Your observation is disturbingly bleak... do you have a recommendation?
...perhaps a site with good bandwidth and a cluster of iperf(1) boxes
available? :)
There are better tools than a simple iperf server:
http://psps.perfsonar.net/toolkit/
There
On 2010.04.29 17:31, Robert Enger - NANOG wrote:
> 1) The capacity that a campus has into I2 or NLR is different than the
> BW the campus purchases from their commercial provider(s).
> 2) The commercial BW test sites are not optimized for speed. They do
> not have unlimited capacity network con
On Thu, 2010-04-29 at 11:48 -0600, Stephen John Smoogen wrote:
> Take a vacuum cleaner with extensions. Make a set of end connectors
A "series of tubes" anyone?
I'd also show them the rrd/MRTG graph at the perimeter. Be clear to them
about the units.
Never miss the chance to ask for more budget
1) The capacity that a campus has into I2 or NLR is different than the BW the
campus purchases from their commercial provider(s).
2) The commercial BW test sites are not optimized for speed. They do not have
unlimited capacity network connections. And, they have not tuned their network
stack
On Thu, Apr 29, 2010 at 9:53 AM, Murphy, William
wrote:
> I work for an Edu with multi-gigabit Internet connectivity and I get
> questions from users saying "Why am I only getting 14Mb when I run this
> speed test?" I have got to believe that the various Internet speed tests
> (Speakeasy or dslre
ther (competing) provider and expect accuracy?
-Scott
-Original Message-
From: Bret Clark [mailto:bcl...@spectraaccess.com]
Sent: Thursday, April 29, 2010 12:05 PM
To: nanog@nanog.org
Subject: Re: Edu versus Speakeasy Speedtest
All the new OS's (IE Windows7) automatically ad
AM
To: nanog@nanog.org
Subject: Re: Edu versus Speakeasy Speedtest
All the new OS's (IE Windows7) automatically adjust TCP window size.
Personally I've never found those website speed test to be that accurate on
fast connections (over 15Mbps full duplex). The only way to real
All the new OS's (IE Windows7) automatically adjust TCP window size.
Personally I've never found those website speed test to be that accurate
on fast connections (over 15Mbps full duplex). The only way to really
confirm bandwidth is by running IPERF.
Robert Glover wrote:
Adjust your TCP wi
Adjust your TCP window size.
-Original Message-
From: "Murphy, William"
Date: Thu, 29 Apr 2010 10:53:01
To: nanog@nanog.org
Subject: Edu versus Speakeasy Speedtest
I work for an Edu with multi-gigabit Internet connectivity and I get
questions from users saying "Why am I only getting 14M
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