HOWTO: Cisco 871 Configuration Recovery

Recently I’ve run into a small problem. It doesn’t happen often but when it does it’s very annoying. At my current place of paycheck-giveth we have several Cisco 871 ISRs providing VoIP access for our staff who work remotely. Most of these folks are sales directors or call center workers – not the most technical of users. Every so often we’ll get a call in from one of the remote users saying that the VPN light on the router won’t light up and they can’t get to anything from behind the router. Power cycling the router and their Cable/DSL modem doesn’t do any good either. Continue reading