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Ethernet Network Fundamentals: Media, MAC, & Switching

This chapter covers basic characteristics of Ethernet network media, physical and data link features, MAC methods, Layer 2 addressing, switch benefits, ARP process, and contrasts between switches and hubs. Understand Ethernet evolution from early years to current state-of-the-art implementations.

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Ethernet Network Fundamentals: Media, MAC, & Switching

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  1. Ethernet Network Fundamentals – Chapter 9

  2. Objectives • Identify the basic characteristics of network media used in Ethernet. • Describe the physical and data link features of Ethernet. • Describe the function and characteristics of the media access control method used by Ethernet protocol. • Explain the importance of Layer 2 addressing used for data transmission and determine how the different types of addressing impacts network operation and performance. • Compare and contrast the application and benefits of using Ethernet switches in a LAN as apposed to using hubs. • Explain the ARP process.

  3. Characteristics of Network Media used in Ethernet • Identify several characteristics of Ethernet in its early years

  4. Characteristics of Network Media used in Ethernet • Describe the emergence of the LAN switch as a key innovation for managing collisions on Ethernet-based networks

  5. Characteristics of Network Media used in Ethernet • Identify the characteristics of state-of-the-art Ethernet and describe its utilization of cabling and point-to-point topography

  6. Physical and Data Link Features of Ethernet • Standards and Implementation

  7. Physical and Data Link Features of Ethernet • Describe how the Ethernet operates across two layers of the OSI model

  8. Physical and Data Link Features of Ethernet • Logic Link Control – Connecting the Upper Layers

  9. Physical and Data Link Features of Ethernet • Media Access Control (MAC)

  10. Physical and Data Link Features of Ethernet • Physical Implementations of the Ethernet

  11. Function and Characteristics of the Media Access Control Method • MAC in Ethernet

  12. Function and Characteristics of the Media Access Control Method • Carrier Sense Multiple Access with Collision Detection

  13. Function and Characteristics of the Media Access Control Method • Ethernet Timing

  14. Layer 2 Addressing and Its Impact on Network Operation and Performance • The Frame – Encapsulating the Packet

  15. Layer 2 Addressing and Its Impact on Network Operation and Performance • The Ethernet MAC Address

  16. Layer 2 Addressing and Its Impact on Network Operation and Performance • Hexadecimal Numbering and Addressing

  17. Layer 2 Addressing and Its Impact on Network Operation and Performance • Another Layer of Addressing

  18. Layer 2 Addressing and Its Impact on Network Operation and Performance • Ethernet Unicast, Multicast and Broadcast

  19. Compare and Contrast the Use of Ethernet Switches versus Hubs in a LAN • Legacy Ethernet – Using Hubs

  20. Compare and Contrast the Use of Ethernet Switches versus Hubs in a LAN • Ethernet – Using Switches

  21. Compare and Contrast the Use of Ethernet Switches versus Hubs in a LAN • Describe how a switch can eliminate collisions, backoffs and re- transmissions, the leading factors in reduced throughput on a hub-based Ethernet network

  22. Explain the Address Resolution Protocol (ARP) Process • Mapping IP to MAC Addresses

  23. Explain the Address Resolution Protocol (ARP) Process • ARP – Destinations Outside the Local Network

  24. Explain the Address Resolution Protocol (ARP) Process • ARP – Removing Address Mappings

  25. Explain the Address Resolution Protocol (ARP) Process • ARP Broadcasts - Issues

  26. Summary

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