The disconnect pc problems we are experiencing:
- Exchange Server 2003.
- Large Folder (5GB) on our File Server running Windows Server 2003.
- Software Program running across our VPN to remote location.
The above issues will usually disconnect for a while, then magically reconnect,
in about 5 - 10 minutes.
These problems are intermittent with various local pc's, approx. 15.
The network has been running for years, and these issues just started.
I've turned off/on all switches, router, firewall, rebooted servers, and rebooted
various pc's - didn't really help. Our Internet access Doesn't have any disconnect issues.
I need to try and determine where the problem is; is it with our local area network
and/or bandwidth, or other issues? I'm suspecting bandwidth overload, but I
could be wrong. Maybe a pc is sending "junk" across the lan? But how to determine?
Our switches are NOT managed. (1) Cisco and (2) 3Com.
Router is Cisco 1941 and is maintained by our Provider.
Firewall is Cisco 5505.
Windows Server 2003
Exchange Server 2003
Various PC's running Windows Pro, XP, (1) running Windows 7
Any recommendations on "free" network monitoring software that I could use?
Budget is basically ZERO.
If anyone has any questions, please ask in basic terms and I'll try and answer
your question(s) the best I can. I'm NOT an Expert, or even close.