For the Supercomputing 2012 show, as in years past, I was “the guy who installed and maintained RANCID” as part of my duties for the SCinet routing team. If you don’t know about RANCID for change management and config back up, check the link. It’s ree and works on a huge amount of gear. Every year there is a new and interesting platform, this year is was Juniper qfabric and Brocade VDX. The Juniper qFabric just worked with the existing jrancid pieces.
You’ll have to modify the rancid-fe script to make it work, or use the included one with the source. It’s still very rudimentary, no VCS or platform information is being collected, just the config as of 11/14/2012.