On the ‘Net: RFC1925 Rule 6A The truth is, however, that while protocol designers may talk about these things, and network designers study them, very few networks today are built using any of these models. What is often used instead is what might be called the Infinitely Layered Functional Indirection (ILFI) model of network engineering. In this model, nothing is solved at a particular layer of the network if it can be moved to another layer, whether successfully or not. Related Posted in HUMOR, ON THE NET ← The Hedge 14: Ron Bonica and SRM6On the ‘Net: So many selfies, so little self →