Ethernet
Network Fundamentals – Chapter 9
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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.
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Characteristics of Network Media used in Ethernet
• Identify several characteristics of Ethernet in its early years.
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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
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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
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Physical and Data Link Features of Ethernet
• Standards and Implementation
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Physical and Data Link Features of Ethernet
• Describe how the Ethernet operates across two layers of the OSI
model
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Physical and Data Link Features of Ethernet
• Logic Link Control – Connecting the Upper Layers
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Physical and Data Link Features of Ethernet
• Media Access Control (MAC)
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Physical and Data Link Features of Ethernet
• Physical Implementations of the Ethernet
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Function and Characteristics of the Media Access
Control Method
• MAC in Ethernet
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Function and Characteristics of the Media Access
Control Method
• Carrier Sense Multiple Access with Collision Detection
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Function and Characteristics of the Media Access
Control Method
• Ethernet Timing
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Layer 2 addressing and its Impact on Network
Operation and Performance
• The Frame – Encapsulating the Packet
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Layer 2 addressing and its Impact on Network
Operation and Performance
• The Ethernet MAC Address
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Layer 2 addressing and its Impact on Network
Operation and Performance
• Another Layer of Addressing
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Compare and Contrast the Use of Ethernet
Switches versus Hubs in a LAN.
• Ethernet – Using Switches
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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
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Explain the Address Resolution Protocol (ARP)
process.
• Mapping IP to MAC Addresses
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Explain the Address Resolution Protocol (ARP)
process.
• ARP – Destinations Outside the Local Network
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Explain the Address Resolution Protocol (ARP)
process.
• ARP – Removing Address Mappings
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Explain the Address Resolution Protocol (ARP)
process.
• ARP Broadcasts - Issues
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Summary
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