For the last few months I have been consistently losing my internet connection intermittently throughout the day, every day. Here's some details and things I have figured out so far.
-HP Proliant ML350 G5 intel dual quad core
-3 network cards, only one enabled
-single server, about 30 clients
-DHCP being run from SBS 2008
-WRVS4400Nv2 and/or WRVS4400N routers
-SBS 2008 fully patched and up-to-date
Almost every 3 hours I lose my internet connection. All internal network connections still work, client to client, client to server, etc.
-Rebooting the server does not restore the internet connection.
-Rebooting the modem does not restore the internet connection(2 different modems tried)
-Rebooting the router does restore the internet connection(i have 2 different routers)
When the internet stops I cannot release or renew my ip on the router. Replaced the modem and router and the problem still occurs. Started about 3 months ago. The loss of internet, while frustrating, is less of a problem than disconnecting everyone from the server for the minute or so while the router reboots.
I have tried absolutely everything i can think of the fix it with the exception of a re-install to keep the internet sustained, but to absolutely no avail. Any ideas at all?