1. Network Communications Chapter 8 Ethernet and IEEE 802.3 Networking Technology

2. Ethernet (Virtual) Bus Topology Figure 8.1

3. Ethernet Reference Model Figure 8.2

4. CMSA/CD Flowchart Station ready to send Sense the channel Channel busy Channel is not Busy Transmit Data and Sense Channel for Collision No Collision Transmission Completed Collision Transmit Jam Signals Wait According Back off Algorithm Figure 8.3

5. IEEE 802.3 MAC and LLC Frame Formats Figure 8.4

6. Physical Address (MAC) Format DA47 DA46 DA45…... DA2 4 DA23…... …………..DA0 Manufacturer ID Burned into NIC ROM Figure 8.5: DA 47 – Multicast DA 46 – Universal Administrator DA 45 - DA 24 – Manufacturer ID DA 23 - DA 0 – Product Instance

7. Ethernet Characteristics Data Rate10 Mbits/sec Encoding Slot Time or Propagation Delay Interframe Gap Backoff Limit Jam Size Maximum Size Minimum Frame Size Manchester 512 bit times 9.6 msec 10 32 bits 1512 bytes 64 bytes

8. Network Interface Card (NIC) *BNC British Naval Connector *RJ-45 Register Jack Figure 8.6

9. ThinNet Components Figure 8.7

10. ThickNet (10Base5) Figure 8.8

11. ThickNet Transceiver Figure 8.9

12. Transceiver Architecture Figure 8:10 SQE Collision Detection Jabber Control Coaxial cable Receive Data Collision Detection Signal Signal Quality Error Transmit Data

13. 10BaseT Figure 8.11 RD TD