Question : Monitoring Remote Office Available Bandwidth

I have a client with a main office and 35 remote offices. I have a Cisco 2951 and a mix of ASA 5505 and Pix's at the remote location. We have VPN Tunnels set up between the remote sites and the main office. The remotes go out to the Internet through their cable connections, not through the VPN.

My question is this: is their a fairly easy way to take snapshots during the day of the bandwidth / speed available to each site and assemble this information in a log file of some sort?

Thank you in Advance

Answer : Monitoring Remote Office Available Bandwidth

Turn on SNMP.  Monitor with Paessler.  Free 10 license version
http://www.paessler.com/tools