We have a major issue at work; here is the scenario:
Public IP: 64.xx.x.42
Local IP: 10.1.1.0
Network: ISP connects T1 (64.xx.x.42) to Firewall/router 10.1.1.1 >> router/firewall connects to switch >> VoIP swith >> SpamFilter >> Exchange/Network/VoIP server >> Workstations.
Rirewall/Router works for a while, users can access Internet, send/receive email, etc. After several hours (less than 20 so far) Router/Firewall stops responding (LAN port on Firewall/Router blinks RED) and we lose connection to internet / send/receive emails / remote access,etc. No web interface to http://10.1.1.1:8080
. So far I cannot find a pattern, but I unplug the Firewall/Router from switch and i connect to a single PC and the red light goes away and I can access the Internet again and access firewall/router web interface.
My assumption is that something floods the firewall/router and makes it stop working on the switch, but can't figure out what it is.
We have been in this situation for 2 days now, please HELP!!