The Illustrated Network How TCP/IP Works in a Modern Network

部分目录：
PART I NETWORKING BASICS
CHAPTER 1 Protocols and Layers...................................................3
The Illustrated Network................................................................ 7
Remote Access to Network Devices....................................... 8
File Transfer to a Router ....................................................... 10
CLI and GUI.......................................................................... 12
Wireshark and Packet Capture.............................................. 13
First Explorations in Networking.......................................... 14
Protocols ..................................................................................... 15
Standards and Organizations ................................................. 16
Request for Comment and the Internet Engineering
Task Force ............................................................................. 19
Internet Administration............................................................... 21
Layers.......................................................................................... 23
Simple Networking................................................................ 23
Protocol Layers...................................................................... 25
The TCP/IP Protocol Suite......................................................... 25
The TCP/IP Layers................................................................ 26
Protocols and Interfaces ........................................................ 28
Encapsulation......................................................................... 28
The Layers of TCP/IP ................................................................ 30
The Physical Layer................................................................ 31
The Data Link Layer ............................................................. 32
The Network Layer ............................................................... 36
The Transport Layer.............................................................. 38
The Application Layer........................................................... 41
Session Support ..................................................................... 42
Internal Representation Conversion ...................................... 42
Applications in TCP/IP ......................................................... 43
The TCP/IP Protocol Suite......................................................... 45
Questions for Readers................................................................. 45
v
CHAPTER 2 TCP/IP Protocols and Devices................................... 47
Protocol Stacks on the Illustrated Network ............................... 50
Layers, Protocols, Ports, and Sockets ........................................ 51
The TCP/IP Protocol Stack ........................................................ 54
The Client Server Model .......................................................... 55
TCP/IP Layers and Client Server............................................. 55
The IP Layer............................................................................... 57
The Transport Layer................................................................... 59
Transmission Control Protocol.............................................. 59
User Datagram Protocol ........................................................ 59
The Application Layer................................................................ 60
Bridges, Routers, and Switches.................................................. 60
Segmenting LANs ................................................................. 61
Bridges ................................................................................... 63
Routers ................................................................................... 64
LAN Switches........................................................................ 65
Virtual LANs ......................................................................... 66
VLAN Frame Tagging .......................................................... 67
Questions for Readers................................................................. 69
CHAPTER 3 Network Link Technologies....................................... 71
Illustrated Network Connections................................................ 74
Displaying Ethernet Traffic................................................... 74
Displaying SONET Links...................................................... 76
Displaying DSL Links........................................................... 79
Displaying Wireless Links .................................................... 81
Frames and the Link Layer ................................................... 84
The Data Link Layer .................................................................. 84
The Evolution of Ethernet.......................................................... 85
Ethernet II and IEEE 802.3 Frames...................................... 86
MAC Addresses..................................................................... 87
The Evolution of DSL................................................................ 89
PPP and DSL ......................................................................... 90
PPP Framing for Packets....................................................... 91
DSL Encapsulation ................................................................ 92
Forms of DSL ........................................................................ 93
The Evolution of SONET........................................................... 94
A Note about Network Errors ............................................... 95
Packet over SONET/SDH ..................................................... 96
Wireless LANs and IEEE 802.11 .............................................. 97
Wi-Fi...................................................................................... 99
vi Contents
IEEE 802.11 MAC Layer Protocol..................................... 100
The IEEE 802.11 Frame...................................................... 102
Questions for Readers............................................................... 104
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