RFP guidelines for backbone routers

I am looking for pointers to help me put together an RFP for a large corporate intranet. The backbone will be OC12 ATM. I am looking for guidance in writing the specs for the level 3 stuff - central routers and edge boxes. Are there any shell documents for such known to be available? I could surely use it for a sanity check on my own attempts to write a document. Thanks, Cheryl email: cheryl@compuserve.com