CCNA

Ethernet
Network Fundamentals – Chapter 9
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.

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


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


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

Physical and Data Link Features of Ethernet
Standards and Implementation
Physical and Data Link Features of Ethernet
Describe how the Ethernet operates across two layers of the OSI model
Physical and Data Link Features of Ethernet
Logic Link Control – Connecting the Upper Layers
Physical and Data Link Features of Ethernet
Media Access Control (MAC)
Physical and Data Link Features of Ethernet
Physical Implementations of the Ethernet
Function and Characteristics of the Media Access Control Method
MAC in Ethernet

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

Function and Characteristics of the Media Access Control Method


Ethernet Timing

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

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

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

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

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

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

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

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

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

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

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

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

Summary