CHAPTER 8 (Wired LANs: Ethernet)

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CHAPTER 8 (Wired LANs: Ethernet) by Mind Map: CHAPTER 8 (Wired LANs: Ethernet)

1. IEEE STANDARD

1.1. Project 802

1.1.1. To set standards to enable intercommunication

1.1.2. A way of specifying functions of the physical layer and the data link layer

2. STANDARD ETHERNET

2.1. Data Link Layer

2.1.1. Logical Link Control (LLC)

2.1.1.1. Responsible for :-

2.1.1.1.1. Flow control

2.1.1.1.2. Error control

2.1.1.1.3. Part of the framing duties

2.1.2. Media Access Control (MAC)

2.1.2.1. The operation of the CSMA/CD method and framing

2.1.2.2. MAC SUBLAYER

2.1.2.2.1. Frame Format

2.1.2.2.2. Frame Length

2.1.2.2.3. Addressing

2.1.2.3. PHYSICAL LAYER

2.1.2.3.1. 10Base5 (Bus, Thick Coaxial)

2.1.2.3.2. 10Base2 (Bus, Thin Coaxial)

2.1.2.3.3. 10Base-T (Star, UTP)

2.1.2.3.4. 10Base-F (Star, Fiber)

3. FAST ETHERNET

3.1. Designed to compete with other LAN protocols such as FDDI or Fiber Channel

3.1.1. MAC SUBLAYER

3.1.1.1. Access method - Half duplex with CSMA/CD

3.1.1.2. New feature added - Autonegotiation

3.1.1.2.1. Allows two devices to negotiate the mode or data rate of operation

3.1.2. PHYSICAL LAYER

3.1.2.1. Uses Star topology

3.1.2.2. Category

3.1.2.2.1. Two-wire

3.1.2.2.2. Four-wire

3.1.2.3. Two-wire implementation

3.1.2.3.1. Cat 5 UTP cable

3.1.2.3.2. FIber-optic cable

3.1.2.4. Four-wire implementation

3.1.2.4.1. Cat 3 UTP

3.1.2.5. Common Fast Ethernet Implementations

3.1.2.5.1. 100Base-TX

3.1.2.5.2. 100Base-FX

3.1.2.5.3. 100Base-T4

4. GIGABIT ETHERNET

4.1. Design of the Gigabit Ethernet Protocol makes the need for an even higher data rate

4.1.1. MAC SUBLAYER

4.1.1.1. Medium Access

4.1.1.1.1. Half-Duplex using CSMA/CD

4.1.1.1.2. Full-Duplex without CSMA/CD (no collision)

4.1.1.2. To Improve efficiency, frame bursting was proposed

4.1.2. PHYSICAL LAYER

4.1.2.1. Uses Star topology

4.1.2.2. Category

4.1.2.2.1. Two-wire

4.1.2.2.2. Four-wire

4.1.2.3. Two-wire implementation

4.1.2.3.1. Fiber-optic cable

4.1.2.4. Four-wire implementation

4.1.2.4.1. Cat 5 Twisted-pair cable

4.1.2.5. Gigabit Ethernet Implementations

4.1.2.5.1. 1000Base-SX

4.1.2.5.2. 1000Base-LX

4.1.2.5.3. 1000Base-CX

4.1.2.5.4. 1000Base-T

5. TEN-GIGABIT ETHERNET

5.1. Called 802.3ae

5.1.1. MAC SUBLAYER

5.1.1.1. Operates

5.1.1.1.1. Full duplex mode

5.1.1.1.2. CSMA/CD is not used

5.1.2. PHYSICAL LAYER

5.1.2.1. Designed for using fiber-optic cable over long distance