I have been looking at a specific problem with one of our European sites in Germany for the last couple of weeks. We connect to them via IP Clear and the carrier is (no secret here...) BT.
Both sides are using Cisco 3620 routers which are working fine. My users starting experiencing some slowness a couple of weeks ago and when I pinged some servers and the router down there I can see some delays throughout the day.
I use Solarwinds for monitoring the health of the LAN and WAN utilisation and the WAN link looks well under the threshold while LAN shows no errors.
As we have another 60 sites all over Europe with similar configs, I am pretty sure the router config is fine...
My question is: do you reckon it is possible for this latency to be cause by the BT 'cloud' between London and Germany and if you do what would be a good test of proving it...
Thanks in advance,