We are experiencing an issue where once or twice a month our DSL connection takes a hit, and then the ASA5505 device will not function. In the past the only way to resolve this has been to shut the device down and then bring it back up about 10 minutes later. I thought it might be an ARP cache problem but it's not I tried clearing that and no luck. The ASA is using a static IP address and the connection is maintained by the DSL modem.
The activity light on the modem is flashing all the time as is the activity light on the outside interface of the ASA, but I can not access the ASA remotely via SSH or VPN. The configuration has not changed so Im not sure why this is occuring. Does anyone have any ideas, besides the obvious of convincing them to get a dedicated circuit?