I work for a small non-profit organization with about 90 employees. We have a Windows network, and we use a fiber-optic connection to the Internet. The fiber has been very reliable until recently. For the past three weeks, we've had short, intermittent problems with our Internet connection. These episodes only last for a minute or less, and they happen on average once or twice a day. The way I notice it is that I get kicked-out of Google Apps, and other users complain that they can't process credit-cards or use other cloud services. The ISP insists that there is nothing wrong with the fiber. The only thing they did is send a technician to replace the modem, but that didn't have any effect.
It's possible that the problem resides somewhere inside our network. I'd like to run some kind of script or utility that will help me troubleshoot the problem. I don't think a simple "ping -t mail.google.com" will be helpful, because it won't tell me where the problem originates.
I'm not really a networking guy. What do people suggest? A PowerShell script, maybe? Or some kind of utility (preferably freeware)?
Thanks in advance.