Here's a script I put together to save configurations and then back them up. Thus far, it will support most Cisco devices and certain load-balancers. It uses perl to fire off SNMP commands that save them locally, draw them off to a TFTP server, and then archive them on a daily basis. It runs well as a cron job, but you're welcome to use it as you wish.

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We inherited a legacy network in a remote location, configured with a dead AAA server, and local user accounts that no one had the password to. I knew the "enable secret" and VTY password, but the local accounts were preventing me from ever getting to use them. What I did have at my disposal, was knowledge of the read/write SNMP string and access to a server listed in the ACL for it.

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