Documenting IPsec tunnels

Hey all,

I'm looking at documenting all of my IPsec tunnels into some fancy document but I'd love some advice as to what information to keep in that document (and what kind of document? A simple .txt file or an Excel spreadsheet?). One thing I know I want is contact information to whoever runs the tunnel on the other side.

Do any of you have something like this already and would be willing to share it with me?

Thanks!