Network software recommendation

One of my customers has a 4 spoke WAN using Sonicwall VPNs managed by a third party. I suspect the transfer rate between sites to be much lower than what they are paying for. Can anyone make a solid recommendation for software to accurately test bandwidth site to site. I am thinking something that would be installed an a computer at site A and site B. Again, I do not have access to the Sonicwalls.

Thanks in advance.
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Kamran ArshadIT AssociateCommented:
Hi,

Below are a few applications to check the total throughput between sites;

Iperf                                        dast.nlanr.net/Projects/Iperf                      Open-Source
ttcp                                        www.pcausa.com                                  Open-Source
Netperf                                 www.netperf.org                                      Open-Source
NetQoS                                 www.netqos.com                                      Propriety
Qcheck                                 www.netiq.com/Qcheck/default.asp      Propriety
simplenetsoftware                 simplenetsoftware.com                              Propriety
Bandwidth Meter                 www.bandwidth-meter.net                      Propriety

Personal recommendations are using IPerf or QCheck.
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Network Analysis

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