On Thu, 28 Feb 2002, Michel Gilbert wrote: > It is essentially a Data Link Layer protocol, operating at Layer 2. Bill was after where it fits into the TCP/IP model. I think you've got that mixed up with the OSI model? :) Layer 2 under the TCP/IP model is the "Internet" layer, which corresponds to layer 3, "Network", of the OSI model. If we want to get picky though, you could say PPP overlaps layer 1 and 2 of the TCP/IP model, so saying "Layer 2" isn't incorrect, but by using the term "Data Link" as opposed to "Internet" fot layer 2 makes me think you're referring of the OSI model. *Back in his box now* PD -- Paul Day Web: www.bur.st/~bonfire