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Network Communications Chapter 8

Network Communications Chapter 8. Ethernet and IEEE 802.3 Networking Technology. Ethernet (Virtual) Bus Topology. Figure 8.1. Ethernet Reference Model. Figure 8.2. CMSA/CD Flowchart. Station ready to send. Wait According Back off Algorithm. Sense the channel. Channel busy.

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Network Communications Chapter 8

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  1. Network CommunicationsChapter 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 Wait According Back off Algorithm Sense the channel Channel busy Channel is not Busy Transmit Data and Sense Channel for Collision Transmit Jam Signals Collision No Collision Transmission Completed Figure 8.3

  5. IEEE 802.3 MAC and LLC Frame Formats Figure 8.4

  6. Physical Address (MAC) Format Burned into NIC ROM DA47 DA46 DA45…... DA2 4 DA23…... …………..DA0 Manufacturer ID DA47 – MulticastDA46 – Universal AdministratorDA45 - DA24 – Manufacturer IDDA23 - DA0 – Product Instance Figure 8.5:

  7. Ethernet Characteristics Data Rate 10 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 Receive Data Signal Quality Error SQE Collision Detection Collision Detection Signal Coaxial cable Jabber Control Transmit Data Figure 8:10

  13. 10BaseT RD TD Figure 8.11

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