(Please see the attached image, which shows my client's network topology)
My client uses FIOS as their ISP, with a 150 down / 150 up connection. This is a new connection that was setup about 2 weeks ago, and on average, we were seeing 155Mbps down, but only 15Mbps up. We called Verizon about the issue. They came out, and replaced the router, which "resolved" the problem. However, here is the problem we are facing:
The Verizon tech's certified laptop reached 155 down / 160 up when connected to the FIOS router.
Our server reached 155 down / 40 up while connected to the FIOS router
The Verizon tech's certified laptop also reached 155 down / 160 up when connected to the wireless (5GHz connected @ 450Mbps)
Our laptop reached 155 down / 40 up also when connected to the wireless (5GHz connected @ 450Mbps)
The problem is that since Verizon's laptop was able to achieve the advertised speed, the upload speed problem is therefore our responsibility. However, I don't know how to troubleshoot the problem. I have tested the server and 4 workstations within the office. Whether they were directly connected to the router, or via wireless, the upload speed is always the same. The only anomaly is the Verizon laptop. The server is running SBS 2011 and is linked at 1Gb. The workstations are either Win7 64bit, or WinXP 32bit.
The managed network switch is controlled by a VoIP service. I unplugged the VoIP box and switch from the network during testing, but it had no impact on performance.
Is there some special way that Verizon setup their laptop?