I have around 10 Networks that are independent hubs that have site to site VPN enabled to each other.
For some reason, some site to site VPN connections (it's not occurring for specific networks but would be totally random) will drop during "after hours (6PM- 5AM)" of the day then come back online a few minutes later. So it doesn't affect the network during the work time of the day.
I get around 5 alerts every night due to this alert and can't seem to figure out why.
This is not that big of an issue as it doesn't affect the network during the day but it would drop our phone switch connections which won't come back online the next day.