Looking for software to test bandwidth between two servers located in different cities connected via VPN tunnels.

I am looking for some kind of software to connect two remote servers and max out the bandwidth between them so I can find out how much actual bandwidth is available. One server is located in Florida and the Other in California and they are connected via VPN tunnel using Cisco equipment.  

There are no issues with communication or accessing one server from the other.  Both machines are Windows 2003 servers and are on the same domain.  I would like to be able to start a bandwidth test between the servers to hammer the connection between them and monitor different statistics.  Any help would be greatly appreciated.  Thanks,

***Title edited by TechSoEasy 2/7/2008***
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dprimeusAuthor Commented:
I am looking for software that I could load on each server.  The title should read "between two servers" not "between two services", that is my fault.

I am thinking one server acts as the sender and the other as the reciever and they transmit data to max it out.  That is kinda what I am looking for.  Both offices are supposedto have a 100mg fiber connection and I am trying to see how fast they can acutally communicate.
Vadim RappCommented:
search on google for

bandwith test software

gives plenty of results.

Or you could just copy a big file and divide size by time.
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PberSolutions ArchitectCommented:
Check this out.  We use this all the time.


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Pber is in the right direction.

I also like Ixia's Qcheck product since it is free and does simpler tests...I'd recommend getting it regardless if you go the IXChariot route as it is great to have around for testing bandwidth between servers for free.


The rest of their line of app testers is here:

Also free:
 "NTttcp is a multithreaded, asynchronous application that sends and receives data between two or more endpoints and reports the network performance for the duration of the transfer. It is essentially a Winsock-based port of the ttcp tool that measures networking performance in terms of bytes transferred per second and CPU cycles per byte."
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