The company I work for has a corporate office and a manufacturing plant that are separated by about 3 miles. All servers are located in the corporate building. Our issue is with the amount of time it takes to pull larger files across the line from the plant. Chances are good that we are using up the bandwidth on the line (I think it's a T1), but we have to somehow prove that in order to justify upgrading the line. If that's actually not the bottleneck, then we need to figure out what it is. Any suggestions on some kind of software tool that will give this type of information? I figure it has to be something that tracks the packets from point to point.