Chapter 6:Layer 2 - Concepts Links:

6.1 | LAN Standards

6.1.1 | Layer 2 The Data Link Layer DataLink Layer
6.1.2 | Comparing OSI Layer 1 and 2 with various LAN standards IEEE
6.1.3 | Comparing the IEEE model with the OSI model
6.1.4 | Logical Link Control (LLC)
6.1.5 | MAC sublayers Layer 2 - The Data Link Layer The Media Access Control ( MAC) Sublayer Functions
6.1.6 | LLC as one of four concepts of Layer 2

6.2 | Hexadecimal Numbers

6.2.1 | Hexadecimal numbers as MAC addresses OUIs Frequent Asked Questions Hex (hexadecimal) Explained
6.2.2 | Basic hexadecimal (hex) numbering
6.2.3 | Converting decimal numbers to hexadecimal numbers
6.2.4 | Converting hexadecimal numbers to decimal numbers
6.2.5 | Methods for working with hexadecimal and binary numbers

6.3 | MAC Addressing

6.3.1 | Data link layer MAC identifiers OUIs Frequent Asked Questions
6.3.2 | MAC address and NICs Hardware address How To
6.3.3 | How the NIC uses MAC addresses
6.3.4 | Layer 2 address encapsulation and decapsulation
6.3.5 | Limitations of MAC addressing

6.4 | Framing

6.4.1 | Why framing is necessary TechEncyclopedia
6.4.2 | Frame format diagram
6.4.3 | Three analogies for frames
6.4.4 | A generic frame format
6.4.5 | Frame start fields Ethernet Frame
6.4.6 | Address fields Ethernet Frame
6.4.7 | length/type fields Ethernet Frame
6.4.8 | Data fields
6.4.9 | Frame error problems and solutions
6.4.10 | Stop frame field

6.5 | Media Access Control (MAC)

6.5.1 | Definition of MAC MAC address
6.5.2 | Three analogies for MAC
6.5.3 | Deterministic MAC protocols Media Access Control Protocols
6.5.4 | Non-deterministic MAC protocols
6.5.5 | Three specific technical implementations and their MACs