During the course of a typical day—if there is such a thing as a "typical" day—network consultants are bombarded with questions coming from all directions. These questions come from customers, peers, sales and marketing teams, network administrators, and so on, and the list seems neverending at times. Network consultants, designers, engineers, managers, and so on have developed an instinct over time and sometimes cringe or develop other nervous habits when the phrase, "You got a second?" is uttered. To the uninitiated, this question seems innocent enough, but after a while they, too, develop the same cringe or nervous habit. . | Network Consultants Handbook About the About the Technical Purpose of This How This Book Can Be The Twelve Networking Chapter 1. Open System Interconnection OSI OSI Reference Summary. 31 Chapter 2. LAN Unicast. 32 LAN LAN LAN Chapter 3. Ethernet IEEE Ethernet Network Elements . 62 Ethernet Network Topologies and IEEE Logical Relationship to the OSI Reference CSMA CD Operation. 71 The Ethernet Physical 10 Mbps Ethernet 100 Mbps or Fast 1000 Mbps or Gigabit Gbps 10 Gbps or 10 Gigabit Chapter 4. Ethernet Case Study Naming Small Ethernet Hub-Based Documentation Case Chapter 5. Ethernet Network Review and Cisco Router Interface show interface ethernet number show buffers Buffer show processes CPU Ethernet Network Ethernet Frame Ethernet Ethernet Ethernet Ethernet Effective Ethernet with IP Ethernet with IPX Case Study Ethernet Network Chapter 6. Token Ring IEEE Token Physical Token Ring Token Holding Time THT .233 Frame Dedicated Token .