The following link is an article on the Computerworld site by author Mark Gibbs and highlights several tools that you might find helpful in estimating the bandwidth speeds you are getting from your provider. Nothing worse than paying for bandwidth you are not receiving, or user complaints about network service! An earlier post gave some basic tips on calculating basic bandwidth requirements for your own environment. Once you know what you need, and have purchased the necessary service, its important to occasionally check and see if you are getting what you paid for!.
Getting the most out of your bandwidth provider!