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Introduction xxx
Chapter 1 Networking Today 1 Networks Affect Our Lives 2 Network Components 2 Network Representations and Topologies 4 Common Types of Networks 5 Internet Connections 6 Reliable Networks 8 Network Trends 9 Network Security 11 The IT Professional 12
1.5.7 Packet Tracer--Network Representation 13
1.9.3 Lab--Research IT and Networking Job Opportunities 16
Chapter 2 Basic Switch and End Device Configuration 19 Cisco IOS Access 20 IOS Navigation 21 The Command Structure 23 Basic Device Configuration 25 Save Configurations 27 Ports and Addresses 27 Configure IP Addressing 28 Verify Connectivity 30 Command Reference 32
2.3.7 Packet Tracer--Navigate the IOS 33
2.3.8 Lab--Navigate the IOS by Using Tera Term for Console Connectivity 38
2.5.5 Packet Tracer--Configure Initial Switch Settings 45
2.7.6 Packet Tracer--Implement Basic Connectivity 50
2.9.1 Packet Tracer--Basic Switch and End Device Configuration 53
2.9.2 Lab--Basic Switch and End Device Configuration 55
Chapter 3 Protocols and Models 59 The Rules 60 Protocols 61 Protocol Suites 63 Standards Organizations 66 Reference Models 68 Data Encapsulation 69 Data Access 71
3.0.3 Class Activity--Design a Communications System 73
3.4.4 Lab--Research Networking Standards 74
3.5.5 Packet Tracer--Investigate the TCP/IP and OSI Models in Action 77
3.7.9 Lab--Install Wireshark 82
3.7.10 Lab--Use Wireshark to View Network Traffic 84
Chapter 4 Physical Layer 91 Purpose of the Physical Layer 92 Physical Layer Characteristics 92 Copper Cabling 94 UTP Cabling 96 Fiber-Optic Cabling 97 Wireless Media 99
4.6.5 Packet Tracer--Connect a Wired and Wireless LAN 101
4.6.6 Lab--View Wired and Wireless NIC Information 105
4.7.1 Packet Tracer--Connect the Physical Layer 109
Chapter 5 Number Systems 115 Binary Number System 116 Hexadecimal Number System 118
Chapter 6 Data Link Layer 123 Purpose of the Data Link Layer 124 Topologies 126 Data Link Frame 128
Chapter 7 Ethernet Switching 131 Ethernet Frames 132 Ethernet MAC Address 134 The MAC Address Table 135 Switch Speeds and Forwarding Methods 140
7.1.6 Lab--Use Wireshark to Examine Ethernet Frames 142
7.2.7 Lab--View Network Device MAC Addresses 149
7.3.7 Lab--View the Switch MAC Address Table 155
Chapter 8 Network Layer 159 Network Layer Characteristics 160 IPv4 Packet 161 IPv6 Packet 163 How a Host Routes 164 Introduction to Routing 166
Chapter 9 Address Resolution 171 MAC and IP 172 ARP 173 IPv6 Neighbor Discovery 175
9.1.3 Packet Tracer--Identify MAC and IP Addresses 177
9.2.9 Packet Tracer--Examine the ARP Table 181
9.3.4 Packet Tracer--IPv6 Neighbor Discovery 185
Chapter 10 Basic Router Configuration 191 Configure Initial Router Settings 192 Configure Interfaces 194 Configure the Default Gateway 196 Command Reference 197
10.1.4 Packet Tracer--Configure Initial Router Settings 198
10.3.4 Packet Tracer--Connect a Router to a LAN 202
10.3.5 Packet Tracer--Troubleshoot Default Gateway Issues 207
10.4.3 Packet Tracer--Basic Device Configuration 210
10.4.4 Lab--Build a Switch and Router Network 212
Chapter 11 IPv4 Addressing 219 IPv4 Address Structure 220 IPv4 Unicast, Broadcast, and Multicast 224 Types of IPv4 Addresses 224 Network Segmentation 226 Subnet an IPv4 Network 227 VLSM Addressing Schemes 231
11.5.5 Packet Tracer--Subnet an IPv4 Network 236
11.6.6 Lab--Calculate IPv4 Subnets 241
11.7.5 Packet Tracer--Subnetting Scenario 245
11.9.3 Packet Tracer--VLSM Design and Implementation Practice 249
11.10.1 Packet Tracer--Design and Implement a VLSM Addressing Scheme 253
11.10.2 Lab--Design and Implement a VLSM Addressing Scheme 255
Chapter 12 IPv6 Addressing 261 IPv4 Issues 262 IPv6 Address Representation 263 IPv6 Address Types 263 GUA and LLA Static Configuration 265 Dynamic Addressing for IPv6 GUAs 267 Dynamic Addressing for IPv6 LLAs 272 IPv6 Multicast Addresses 272 Subnet an IPv6 Network 272
12.6.6 Packet Tracer--Configure IPv6 Addressing 276
12.7.4 Lab--Identify IPv6 Addresses 280
12.9.1 Packet Tracer--Implement a Subnetted IPv6 Addressing Scheme 284
12.9.2 Lab--Configure IPv6 Addresses on Network Devices 286
Chapter 13 ICMP 291 ICMP Messages 292 Ping and Traceroute Tests 296 Command Reference 297
13.2.6 Packet Tracer--Verify IPv4 and IPv6 Addressing 297
13.2.7 Packet Tracer--Use Ping and Traceroute to Test Network Connectivity 301
13.3.1 Packet Tracer--Use ICMP to Test and Correct Network Connectivity 305
13.3.2 Lab--Use Ping and Traceroute to Test Network Connectivity 307
Chapter 14 Transport Layer 319 Transportation of Data 320 TCP Overview 322 UDP Overview 325 Port Numbers 327 TCP Communication Process 329 Reliability and Flow Control 332 UDP Communication 334 Command Reference 336
14.8.1 Packet Tracer--TCP and UDP Communications 336
Chapter 15 Application Layer 343 Application, Presentation, and Session 344 Application Layer 344 Peer-to-Peer 346 Web and Email Protocols 347 IP Addressing Services 349 File Sharing Services 353 Command Reference 355
15.4.8 Lab--Observe DNS Resolution 355
Chapter 16 Network Security Fundamentals 359 Security Threats and Vulnerabilities 360 Network Attacks 361 Network Attack Mitigation 364 Device Security 366 Command Reference 368
16.2.6 Lab--Research Network Security Threats 368
16.4.6 Packet Tracer--Configure Secure Passwords and SSH 372
16.4.7 Lab--Configure Network Devices with SSH 375
16.5.1 Packet Tracer--Secure Network Devices 381
16.5.1 Lab--Secure Network Devices 383
Chapter 17 Build a Small Network 389 Devices in a Small Network 390 Small Network Applications and Protocols 392 Scale to Larger Networks 394 Verify Connectivity 395 Host and IOS Commands 397 Troubleshooting Methodologies 402 Troubleshooting Scenarios 403 Command Reference 405
17.4.6 Lab--Test Network Latency with Ping and Traceroute 406
17.5.9 Packet Tracer--Interpret show Command Output 411
17.7.6 Lab--Troubleshoot Connectivity Issues 413
17.7.7 Packet Tracer--Troubleshoot Connectivity Issues 418
17.8.1 Lab--Design and Build a Small Network 422
17.8.2 Packet Tracer--Skills Integration Challenge 423
17.8.3 Packet Tracer--Troubleshooting Challenge 426