I have a Cisco ASA 5505 with a pretty simple configuration. It's got a single site-to-site vpn, default route out for internet traffic. But I also have 5 static routes to direct certain subnets to another firewall on the inside network.
The problem is that the last 3 mornings, traffic to those 5 subnets has quit working. It works again after restarting the ASA. I wondered if the ASA was learning routes from another device on the network, but can't find any route-cache settings to change on the ASA.
What could cause this?