How to troubleshoot wide area network performance problem?

[Mark Greene]

On Thu, Jul 10, 2008 at 7:36 PM, Alex Hewitt <hewitt_tech at comcast.net>
wrote:

> I have clients with an interesting network problem. One location in
> Bedford New Hampshire using a fractionated T1 has routinely been
> transmitting studies to an office in Nashua New Hampshire. There have
> been no problems with this for at least 18 months. However recently
> (about a week ago), the transmissions suddenly became slow, really slow.
> A transmission that was taking around 10 minutes suddenly jumped to 2-3
> hours. The customer in Bedford New Hampshire is using One
> Communications.


I'd bet money that One Communications is the culprit, and that they are
doing different routing on their network to you vs. to your Nashua client's
office.  They *may* be doing selective throttling based on content ala
Comcast, but this may also be a non-malicious mistaken config problem too.

mark
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