Networking / Services / Processes (Score 0)

I'm looking for a Wiki/Network mapping (Visio Style) application or CMS to document a whole network, servers, applications, services, IP addressing, and etc. Anyone recommend a complete cookie cutter system for documenting a network? Open source preferably? I am in a new systems administrator position and this would help me to not only document my work but to understand the systems and also not forget where things are. It would be nice to be able to click on items in the map and documentation to remote desktop or ssh into servers. I appreciate the input!