@DrewDad,
Quote:I don't get why we don't just teach folks TCP and be done. OSI is a nice reference model, but TCP/IP has clearly won.
I saw a great talk by Geoff Houston (early pioneer of AARNet) on why OSI was a lost cause (in 1992, I think).
The fact that it's still used means he was wrong, sort of.
OSI is theoretical, it offers more flexibility, but the cost is complexity. It's a useful framework to talk about issues of interoperability, but that's about it.
Houston's two main points were:
1. TCP/IP was actually being used - there was plenty of proof that it worked, people all over the nascent internet were using it while OSI had/has no real world application.
2. (This was the good bit) He said that because OSI was a cross industry standard all the big players committed staff to its development - but his take was all those companies donated the staff they could most do without at interminable meetings and arcane conversations, a confluence of mediocrity.
I have no idea why I'm rabbiting on about this - but I'm just glad at least one of you was wheat (I'm just well-read chaff).