OSI Layering and IP Layering(1)




                +----------------------+  +---------------------------+
                | Layer 7 Application  |  |                           |
                +----------------------+  |                           |
                | Layer 6 Presentation |  | Network Application       |
                +----------------------+  |                           |
                | Layer 5 Session      |  |                           |
                +----------------------+  +---------------------------+
                | Layer 4 Transport    |  | Layer 4 TCP/UDP           |
                +----------------------+  +---------------------------+
                | Layer 3 Network      |  | Layer 3 IP(/ICMP,routing) |
                +----------------------+  +---------------------------+
                | Layer 2 Datalink     |  | Layer 2 Datalink          |
                +----------------------+  +---------------------------+
                | Layer 1 Physical     |  | Layer 1 Physical          |
                +----------------------+  +---------------------------+

                     OSI Layering              IP Layering