Re: Industry standard bandwidth guarantee?

["Bruce A. Mah" <bmah () kitchenlab org>]

If memory serves me right, keith tokash wrote:

> I'm sorry I should have been more specific.  I'm referring to the
> *percentage* of a circuit's bandwidth.  For example if you order a
> 20Mb site to site circuit and iperf shows 17Mb.  Well ... that's 15%
> off, which sounds hefty, but I'm not sure what's realistic to expect.

This doesn't exactly answer your original question, but...

iperf (as well as its follow-on, iperf3) runs between two end hosts, so
an iperf test will be measuring other effects, such as congestion (as
others have pointed out), but also end-host tuning, the LANs to which
the end hosts are attached, etc.

${WORK} maintains a good reference to tuning networks for
high-performance R&E networks...some of these techniques are applicable
to other environments as well.

http://fasterdata.es.net/

Bruce.

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