I was sitting in on the Peering BOF at NANOG a couple of weeks ago, and there was a discussion of Non-Stop Forwarding (NSF), Non-Stop Routing (NSR), and Graceful Restart (GR). It became apparent in the discussion that a couple of the participants were not making clear distinctions among these functions (or at least the acronyms), which are in fact quite different. Confusion about these and a few r