Ball State University
Computer Science Dept.
CS637: Networks

The Layering Principle

Basic Concepts

• General System Layering

• Strict System Layering
• Bi-directional Layering
• Virtual Communication between Peers

• The ISO Layering Model

• Physical Hardware Connection
• Data Link / Hardware Interface
• Network
• Transport
• Session
• Presentation
• Application

• TCP/IP Protocol Layering

• Network Interface
• Internet
• Transport
• Application

• Novell Netware Protocol Layering

• Network Interface
• IPX
• SPX & NCP

• Microsoft Windows Protocol Layering

• Network Interface
• NetBEUI
• NetBIOS
• SMB