How To Measure Bandwidth?

I am in the process of planning a move of IT infrastructure into a datacenter.

This will involve getting a dedicated line from our HQ to said datacenter, the only issue I am having is determining the required bandwidth, there are several SQL databases running here as well as standard file & print etc.

Does anyone have a (relatively easy to use) tool that can help me determine traffic peaks and troughs?

Thanks
techmissAsked:
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Rich RumbleConnect With a Mentor Security SamuraiCommented:
If you can measure the services/boxes that are being relocated, I'd use ntop. There is an old version for windows available if your not comfortable with linux. http://ttcshelbyville.wordpress.com/2010/05/14/ntop-for-windows/ For linux: http://www.ntop.org/get-started/download/
You would typically get a network mirror or span port so you can see all the traffic you need to see. Failing that you could install ntop on each machine and have them record their bandwidth consumption. Ntop breaks traffic down by protocol as well as src/dst, so you can get a much better overview than you do using a simpler SNMP tool like ClearSite-NMS or Cacti.
http://sourceforge.net/projects/clearsite/
http://www.cacti.net/
-rich
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FideliusConnect With a Mentor Commented:
Hello,

You can use PRTG - http://www.paessler.com/prtg
It is free for up to 10 sensors, so you can monitor on switches ports which servers are connected on, or uplink port. Only thing you have to do is enable SNMP on your switches, and add respective ports in PRTG. Installation and setup is very easy and simple. Give it a try. If you need any help getting it to work let me know. I'll be glad to help.

Regards!
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techmissAuthor Commented:
Thanks, I'll try both suggestions.
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