We have had issues with our VPN between CA and NY (via Sonicwall) going down for a few mins to hours every 2-4 days. Sonicwall support can not figure out what might be causing this.
The only indicator in the logs are notifications for "346 VPN Inform IKE Initiator: Start Quick Mode (Phase 2)." between these two sites every few mins. Sonicwall tech support said that this notification is nothing to worry about but it is the only log showing some sort of information between the two office. They also checked all our settings and said it looks fine.
We already replaced the NY Sonicwall with the original one we had in place a few months ago (we had to import the settings from the problem Sonicwall).
Any advice on how to troubleshoot this?