Ethernet, LANs and VLANs
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Ethernet is used in all parts of the network for point-to-point links between devices, implementing Layers 1 and 2 of the OSI model together.
In this module, we’ll review the basic principles of Ethernet and LANs, how it was formalized in the 802 series of standards, the concepts of MAC addresses, MAC frames and broadcast domains.
You’ll understand how LAN switches, also called Layer 2 switches, connect devices, and how VLANs separate devices as a basic network security function.
Telecom Module 13
Detailed Outline
13 Ethernet, LANs and VLANs
13.1 LAN Basics
...... 13.1.1 Bus Topology
...... 13.1.2 Broadcast Domain
...... 13.1.3 Balanced Configuration
...... 13.1.4 Collision Domain
...... 13.1.5 MAC Address
...... 13.1.6 Communication of MAC Frames
13.2 Ethernet and 802 Standards
...... 13.2.1 IEEE 802 Standards
...... 13.2.2 Ethernet vs. 802.3
...... 13.2.3 Token Ring
...... 13.2.4 Baseband LAN
...... 13.2.5 10BASE-5
...... 13.2.6 10BASE-2
...... 13.2.7 10BASE-T
...... 13.2.8 100BASE-T
...... 13.2.9 1000BASE-T
...... 13.2.10 Optical Ethernet
13.3 LAN Cables and Categories
...... 13.3.1 Unshielded Twisted Pair (UTP)
...... 13.3.2 Shielding
...... 13.3.3 TIA-568 LAN Cable Categories
...... 13.3.4 TIA-568A vs. TIA-568B
...... 13.3.5 Maximum Cable Length and Cabling Architecture
...... 13.3.6 Difference Between Categories
...... 13.3.7 Which Category to Use
13.4 LAN Switches: Layer 2 Switches
...... 13.4.1 Hardware
...... 13.4.2 Purpose and Operation
...... 13.4.3 Buffers
...... 13.4.4 Frame Forwarding
...... 13.4.5 Broadcast Domain Defined by Switch
13.5 VLANs
...... 13.5.1 Broadcast Domains Defined in Software
...... 13.5.2 Routing Between VLANs
...... 13.5.3 Header Tag
...... 13.5.4 Traffic Management and Network Security
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Eric Coll is an international expert in telecommunications, broadband and networking, and has been actively involved in the telecom industry since 1983. He holds Bachelor of Engineering and Master of Engineering (Electrical) degrees.
Mr. Coll has broad experience, and broad knowledge of telecom developed working as an engineer in the telecommunications industry.
He has used his knowledge of telecom to develop and teach telecommunications technology training seminars to wide acclaim across North America since 1992... and answering questions at seminars for companies and organizations ranging from Bell Labs to the Department of Justice keeps things up to date.
In his spare time, Mr. Coll authors textbooks and online courses based on the latest updates to the seminar courses.
Mr. Coll also provides consulting services as a Subject Matter Expert in telecommunications to government, carriers, and their customers.
