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A Practical Guide to Advanced Networking, Third Edition takes a pragmatic, hands-on approach to teaching advanced modern networking concepts from the network administrator’s point of view. Thoroughly updated for the latest networking technologies and applications, the book guides you through designing, configuring, and managing campus networks, connecting networks to the Internet, and using the latest networking technologies. The authors first show how to solve key network design challenges, including data flow, selection of network media, IP allocation, subnetting, and configuration of both VLANs and Layer 3 routed networks. Next, they illuminate advanced routing techniques using RIP/RIPv2, OSPF, IS-IS, EIGRP, and other protocols, and show how to address common requirements such as static routing and route redistribution. You’ll find thorough coverage of configuring IP-based network infrastructure, and using powerful WireShark and NetFlow tools to analyze and troubleshoot traffic. A full chapter on security introduces best practices for preventing DoS attacks, configuring access lists, and protecting routers, switches, VPNs, and wireless networks. This book’s coverage also includes IPv6, Linux-based networking, Juniper routers, BGP Internet routing, and Voice over IP (VoIP). Every topic is introduced in clear, easy-to-understand language; key ideas are reinforced with working examples, and hands-on exercises based on powerful network simulation software.
Key Pedagogical Features
CD-ROM includes Net-Challenge Simulation Software and the Wireshark Network Protocol Analyzer Software examples.
Advanced Network Mapping Guide to Network Simulator (32 KB .pdf)
Please register your book to gain access to additional downloadable bonus content files.
Introduction xvi
CHAPTER 1 Network Infrastructure Design 2
Chapter Outline 3
Objectives 3
Key Terms 3
INTRODUCTION 4
1-1 PHYSICAL NETWORK DESIGN 4
Core 5
Distribution Layer 5
Access Layer 6
Data Flow 6
Selecting the Media 6
1-2 IP SUBNET DESIGN 7
IP Address Range 8
Determining the Number of Subnetworks Needed for the Network 9
Determining the Size or the Number of IP Host Addresses Needed for the Network 11
IP Assignment 15
1-3 VLAN NETWORK 16
Virtual LAN (VLAN) 17
VLAN Configuration 18
VLAN Tagging 23
802.1Q Configuration 25
Networking Challenge: Static VLAN Configuration 26
Configuring the HP Procurve Switch 27
1-4 ROUTED NETWORK 28
Router 29
Gateway Address 30
Network Segments 31
Multilayer Switch 32
Layer 3 Routed Networks 33
Routed Port Configuration 33
InterVLAN Routing Configuration 35
Serial and ATM Port Configuration 37
Summary 44
Questions and Problems 46
CHAPTER 2 Advanced Router Configuration I 52
Chapter Outline 53
Objectives 53
Key Terms 53
Introduction 54
2-1 CONFIGURING STATIC ROUTING 54
Gateway of Last Resort 61
Configuring Static Routes 61
Load Balancing and Redundancy 68
Networking Challenge–Static Routes 70
2-2 DYNAMIC ROUTING PROTOCOLS 70
Distance Vector Protocols 73
Link State Protocols 74
2-3 CONFIGURING RIPv2 75
Configuring Routes with RIP 77
Configuring Routes with RIP Version 2 82
Networking Challenge–RIP 84
2-4 TFTP–Trivial File Transfer Protocol 85
Configuring TFTP 85
Summary 89
Questions and Problems 89
CHAPTER 3 Advanced Router Configuration II 98
Chapter Outline 99
Objectives 99
Key Terms 99
INTRODUCTION 101
3-1 CONFIGURING LINK STATE PROTOCOLS–OSPF 101
Link State Protocols 102
Configuring Routes with OSPF 103
Load Balancing and Redundancy with OSPF 109
Networking Challenge–OSPF 111
3-2 CONFIGURING LINK STATE PROTOCOLS–IS-IS 112
Configuring Routes with IS-IS 113
Load Balancing and Redundancy with IS-IS 117
Networking Challenge: IS-IS 118
3-3 CONFIGURING HYBRID ROUTING PROTOCOLS–EIGRP 119
Configuring Routes with EIGRP 120
Load Balancing and Redundancy 125
Networking Challenge: EIGRP 128
3-4 ADVANCED ROUTING REDISTRIBUTION 129
Route Redistribution into RIP 130
Route Redistribution into OSPF 134
Route Redistribution into EIGRP 137
Route Redistribution into IS-IS 141
3-5 ANALYZING OSPF “HELLO” PACKETS 143
Summary 147
Questions and Problems 147
CHAPTER 4 Configuring Juniper Routers 158
Chapter Outline 159
Objectives 159
Key Terms 159
INTRODUCTION 160
4-1 OPERATIONAL MODE 160
4-2 ROUTER CONFIGURATION MODE 166
Displaying the Router Interfaces 166
Hostname Configuration 167
Assigning an IP Address to an Interface 168
4-3 CONFIGURING ROUTES ON JUNIPER ROUTERS 169
Configure STATIC Routes on Juniper Routers 169
Configure RIP on Juniper Routers 171
Configure OSPF on Juniper Routers 173
Configure IS-IS on Juniper Routers 175
4-4 CONFIGURING ROUTE REDISTRIBUTION ON JUNIPER ROUTERS 178
Summary 182
Questions and Problems 182
CHAPTER 5 CONFIGURING AND MANAGING THE NETWORK INFRASTRUCTURE 188
Chapter Outline 189
Objectives 189
Key Terms 189
Introduction 190
5-1 DOMAIN NAME AND IP ASSIGNMENT 190
5-2 IP MANAGEMENT WITH DHCP 195
DHCP Data Packets 197
DHCP Deployment 201
5-3 SCALING THE NETWORK WITH NAT AND PAT 204
Configuring NAT 205
5-4 DOMAIN NAME SERVICE (DNS) 209
DNS Tree Hierarchy 210
DNS Resource Records 214
Summary 220
Questions and Problems 220
CHAPTER 6 Analyzing Network Data Traffic 226
Chapter Outline 227
Objectives 227
Key Terms 227
INTRODUCTION 228
6-1 PROTOCOL ANALYSIS/FORENSICS 228
Basic TCP/UDP Forensics 234
ARP and ICMP 236
6-2 WIRESHARK PROTOCOL ANALYZER 239
Using Wireshark to Capture Packets 243
6-3 ANALYZING NETWORK DATA TRAFFIC 244
Configuring SNMP 244
NetFlow 250
6-4 FILTERING 251
FTP Filtering 256
Right-Click Filtering Logic Rules 258
Filtering DHCP 260
Summary 262
Questions and Problems 262
CHAPTER 7 Network Security 266
Chapter Outline 267
Objectives 267
Key Terms 267
INTRODUCTION 268
7-1 DENIAL OF SERVICE 268
Distributed Denial of Service Attacks (DDoS) 270
7-2 FIREWALLS AND ACCESS LISTS 270
Network Attack Prevention 272
Access Lists 272
7-3 Router Security 279
Router Access 280
Router Services 282
Router Logging and Access-List 283
7-4 Switch Security 285
Switch Port Security 286
Switch Special Features 288
7-5 Wireless Security 289
7-6 VPN Security 292
VPN Tunneling Protocols 293
Configuring a VPN Virtual Interface (Router to Router) 294
Troubleshooting the VPN Tunnel Link 299
Summary 302
Questions and Problems 302
CHAPTER 8 IPv6 306
Chapter Outline 307
Objectives 307
Key Terms 307
Introduction 308
8-1 Comparison of IPv6 and IPv4 308
8-2 IPV6 ADDRESSING 311
8-3 IPv6 Network Settings 315
8-4 Configuring a Router for IPv6 320
8-5 IPv6 Routing 324
IPv6: Static 324
IPv6: RIP 324
IPv6: OSPF 325
IPv6: EIGRP 325
IPv6: IS-IS 326
8-6 Troubleshooting IPv6 Connection 327
Summary 329
Questions and Problems 329
CHAPTER 9 Linux Networking 336
Chapter Outline 337
Objectives 337
Key Terms 337
INTRODUCTION 338
9-1 LOGGING ON TO LINUX 339
Adding a User Account 340
9-2 LINUX FILE STRUCTURE AND FILE COMMANDS 344
Listing Files 344
Displaying File Contents 346
Directory Operations 348
File Operations 351
Permissions and Ownership 353
9-3 LINUX ADMINISTRATION COMMANDS 357
The man (manual) Command 358
The ps (processes) Command 359
The su (substitute user) Command 362
The mount Command 362
The shutdown Command 364
Linux Tips 364
9-4 ADDING APPLICATIONS TO LINUX 365
9-5 LINUX NETWORKING 371
Installing SSH 375
The FTP Client 376
DNS Service on Linux 376
Changing the Hostname 377
9-6 TROUBLESHOOTING SYSTEM AND NETWORK PROBLEMS WITH LINUX 378
Troubleshooting Boot Processes 378
Listing Users on the System 380
Network Security 382
Enabling and Disabling Boot Services 382
9-7 MANAGING THE LINUX SYSTEM 385
Summary 390
Questions and Problems 391
CHAPTER 10 Internet Routing 396
Chapter Outline 397
Objectives 397
Key Terms 397
INTRODUCTION 398
10-1 INTERNET ROUTING–BGP 398
Configuring a WAN Connection 398
Configuring an Internet Connection 400
10-2 CONFIGURING BGP 401
Configuring BGP 401
Networking Challenge: BGP 409
10-3 BGP BEST PATH SELECTION 410
10-4 IPv6 OVER THE INTERNET 412
10-5 CONFIGURE BGP ON JUNIPER ROUTERS 415
Summary 421
Questions and Problems 421
CHAPTER 11 Voice over IP 428
Chapter Outline 429
Objectives 429
Key Terms 429
INTRODUCTION 430
11-1 THE BASICS OF VOICE OVER IP 430
11-2 VOICE OVER IP NETWORKS 433
Replacing an Existing PBX Tie Line 433
Upgrading Existing PBXs to Support IP Telephony 435
Switching to a Complete IP Telephony Solution 436
11-3 QUALITY OF SERVICE 438
Jitter 438
Network Latency 439
Queuing 439
QOS Configuration Example 440
11-4 ANALYZING VoIP DATA PACKETS 442
Analyzing VoIP Telephone Call Data Packets 446
11-5 VoIP SECURITY 449
Summary 452
Questions and Problems 452
Key Terms Glossary 456
TOC, 9780789749048, 10/12/2012