IEEE 802.3-Ethernet

Introduction

• LAN (Local Area Network) - network connecting devices in a limited geographic area usually privately owned and limited to a single office or building or campus
• Three usual architectures used:
• Ethernet, Token Bus and Token Ring.
• Ethernet most dominant
• Each protocol is based on HDLC
• Data link layer is additionally subdivided into two sub layers
• Logical Link Control (LLC)
• Medium Access Control (MAC