I have a Cisco 2501; after a power outage it will only boot to "boot mode". The register is set to 0x2102 and "sh flash" displays the valid image.
The router config is still then, and is loaded to RAM (sh run) on boot. The local FaEth (LAN) address responds to a ping. However, the WAN traffic doesn't route.
I attempted to change the config-reg to 0x2102 (just to make sure) and perform a reload, but the result is the same.
What troubleshooting options can I take? Or is this router config corrupt?