Hi I have a Sonicwwall TZ215 with built in wireless and a SonicPoint NI attached. I have a single WAN connection from Time Warner (DHCP not Static address). I have a Dell switch plugged into the LAN port of the sonic wall with feeds about 5 LAN devices. The rest of my setup is just iPads and iPhones on the WLAN networks.
I have been having internet drop outs randomly and for different amounts of time now for about a month and it is driving me crazy. The connection will come back on its own and the SW logs don't show anything that jumps out to me. I have tired resetting the SW to factory defaults. I have tried turning off wireless and also tired just using wireless to troubleshoot. My internal network seems to be just fine but no matter what I have tried I still am having this WAN issue.
I at first assumed it was an ISP issue and they have come out several time and replaced everything from splitters to the modem. If I plug a laptop directly into the modem I can run a ping test all day and not have a single drop. Once I plug it back into my SW the problems start back up. If I run a ping test I will have ping timeouts all over the place randomly. I have also noticed that my point to point VPN with another location seems to stay active during these drops but I cannot access any remote resources. I have changed DNS servers to Google (220.127.116.11) to rule that out and am still experiencing the problem.
Any ideas would be greatly appreciated. Thank you in advance.