* Master all 642-845 exam topics with the official study guide * Assess your knowledge with chapter-opening quizzes * Review key concepts with foundation summaries * Practice with hundreds of exam questions on the CD-ROM CCNP ONT Official Exam Certification Guide is a best of breed CiscoR exam study guide that focuses specifically on the objectives for the Optimizing Converged Cisco Networks exam (642-845 ONT). Successfully passing the ONT 642-845 exam certifies that you have the knowledge and skills necessary to optimize and apply effective QoS techniques for converged networks.CCNP ONT Official Exam Certification Guide follows a logical organization of the CCNPR ONT exam objectives. Material is presented in a concise manner, focusing on increasing your retention and recall of exam topics. You can organize your exam preparation through the use of the consistent features in these chapters. "Do I Know This Already?" quizzes open each chapter and allow you to decide how much time you need to spend on each section. Exam topic lists and concise Foundation Summary information make referencing easy and give you a quick refresher whenever you need it. Challenging chapter-ending review questions help you assess your knowledge and reinforce key concepts.The companion CD-ROM contains a powerful testing engine that allowsyou to focus on individual topic areas or take complete, timed exams. The assessment engine also tracks your performance and provides feedback on a topic-by-topic basis, presenting question-by-question remediation to the text. Well regarded for its level of detail, assessment features, and challenging review questions and exercises, this book helps you master the concepts and techniques that can enable you to succeed on the exam the first time.
Author(s): Amir Ranjbar
Publisher: Cisco Press
Year: 2007
Language: English
Pages: 396
City: Indianapolis, IN
CCNP ONT Official Exam Certification Guide......Page 1
About the Author......Page 5
Acknowledgments......Page 8
Contents at a Glance......Page 10
Contents......Page 11
Who Should Read This Book?......Page 19
Strategies for Exam Preparation......Page 20
How This Book Is Organized......Page 21
Features of This Book......Page 23
Part I: Voice over IP......Page 26
“Do I Know This Already?” Quiz......Page 28
Benefits of Packet Telephony Networks......Page 33
Packet Telephony Components......Page 34
Analog Interfaces......Page 36
Digital Interfaces......Page 37
Stages of a Phone Call......Page 38
Distributed Versus Centralized Call Control......Page 39
Basic Voice Encoding: Converting Analog to Digital......Page 42
Basic Voice Encoding: Converting Digital to Analog......Page 43
The Nyquist Theorem......Page 44
Quantization......Page 45
Compression Bandwidth Requirements and Their Comparative Qualities......Page 47
Digital Signal Processors......Page 48
End-to-End Delivery of Voice......Page 50
Protocols Used in Voice Encapsulation......Page 53
Reducing Header Overhead......Page 55
Impact of Voice Samples and Packet Size on Bandwidth......Page 57
Security and Tunneling Overhead......Page 60
Calculating the Total Bandwidth for a VoIP Call......Page 62
Effects of VAD on Bandwidth......Page 64
Enterprise Voice Implementations......Page 65
Voice Gateway Functions on a Cisco Router......Page 67
Cisco Unified CallManager Functions......Page 68
Multisite with Centralized Call Processing Model......Page 69
Multisite with Distributed Call Processing Model......Page 70
Identifying Voice Commands in IOS Configurations......Page 71
Call Admission Control (CAC)......Page 72
Foundation Summary......Page 73
Q&A......Page 75
Part II: Quality of Service......Page 78
“Do I Know This Already?” Quiz......Page 80
Converged Network Issues Related to QoS......Page 85
Available Bandwidth......Page 86
End-to-End Delay......Page 87
Delay Variation......Page 88
Packet Loss......Page 89
Definition of QoS and the Three Steps to Implementing It......Page 91
Implementing QoS......Page 92
Best-Effort Model......Page 95
Integrated Services Model......Page 96
Differentiated Services Model......Page 97
Modular QoS Command-Line Interface (MQC)......Page 99
AutoQoS......Page 102
Router and Security Device Manager (SDM) QoS Wizard......Page 104
Foundation Summary......Page 112
Q&A......Page 114
“Do I Know This Already?” Quiz......Page 116
Classification and Marking......Page 120
Layer 2 QoS: CoS on 802.1Q/P Ethernet Frame......Page 121
Layer 2 QoS: DE and CLP on Frame Relay and ATM (Cells)......Page 122
The DiffServ Model, Differentiated Services Code Point (DSCP), and Per-Hop Behavior (PHB)......Page 123
IP Precedence and DSCP......Page 125
QoS Service Class......Page 129
Trust Boundaries......Page 131
Network Based Application Recognition (NBAR)......Page 133
Cisco IOS Commands to Configure NBAR......Page 135
Foundation Summary......Page 141
Q&A......Page 143
“Do I Know This Already?” Quiz......Page 146
Introduction to Congestion Management and Queuing......Page 150
First-In-First-Out, Priority Queuing, Round-Robin, and Weighted Round-Robin Queuing......Page 153
Weighted Fair Queuing......Page 155
WFQ Classification and Scheduling......Page 156
Configuring and Monitoring WFQ......Page 158
Class-Based Weighted Fair Queuing......Page 161
Classification, Scheduling, and Bandwidth Guarantee......Page 162
Benefits and Drawbacks of CBWFQ......Page 163
Configuring and Monitoring CBWFQ......Page 164
Low-Latency Queuing......Page 165
Configuring and Monitoring LLQ......Page 167
Foundation Summary......Page 169
Q&A......Page 170
“Do I Know This Already?” Quiz......Page 172
Tail Drop and Its Limitations......Page 176
Random Early Detection......Page 177
Weighted Random Early Detection......Page 179
Configuring CBWRED......Page 181
Traffic Shaping and Policing......Page 186
Measuring Traffic Rates......Page 188
Link Efficiency Mechanisms......Page 190
Layer 2 Payload Compression......Page 191
Header Compression......Page 192
Applying Link Efficiency Mechanisms......Page 194
Foundation Summary......Page 195
Q&A......Page 198
“Do I Know This Already?” Quiz......Page 200
Virtual Private Networks (VPN)......Page 203
QoS Pre-Classify Applications......Page 204
QoS Pre-Classification Deployment Options......Page 206
Deploying End-to-End QoS......Page 208
QoS Service Level Agreements (SLAs)......Page 209
Enterprise Campus QoS Implementations......Page 211
WAN Edge QoS Implementations......Page 213
Control Plane Policing (CoPP)......Page 215
Foundation Summary......Page 217
Q&A......Page 221
“Do I Know This Already?” Quiz......Page 224
Introducing AutoQoS......Page 228
Implementing and Verifying AutoQoS......Page 230
Two-Step Deployment of AutoQoS Enterprise on Routers......Page 232
Deploying AutoQoS VoIP on IOS-Based Catalyst Switches......Page 233
Verifying AutoQoS on Cisco Routers and IOS-Based Catalyst Switches......Page 235
Automation with Cisco AutoQoS......Page 238
Common AutoQoS Problems......Page 241
Interpreting and Modifying AutoQoS Configurations......Page 242
Foundation Summary......Page 245
Q&A......Page 250
Part III: Wireless LAN......Page 252
“Do I Know This Already?” Quiz......Page 254
The Need for Wireless LAN QoS......Page 258
WLAN QoS Description......Page 260
Split MAC Architecture and Light Weight Access Point......Page 261
Current Wireless LAN QoS Implementation......Page 262
Configuring Wireless LAN QoS......Page 266
Foundation Summary......Page 270
Q&A......Page 275
“Do I Know This Already?” Quiz......Page 278
WLAN Security Issues......Page 281
Evolution of WLAN Security Solutions......Page 282
802.1x and EAP Authentication Protocols......Page 283
Cisco LEAP......Page 285
EAP-FAST......Page 287
EAP-TLS......Page 289
PEAP......Page 290
WPA, 802.11i, and WPA2......Page 292
Open Authentication......Page 295
Static WEP Authentication......Page 296
WPA Preshared Key......Page 297
Web Authentication......Page 299
802.1x Authentication......Page 301
Foundation Summary......Page 304
Q&A......Page 308
“Do I Know This Already?” Quiz......Page 310
Cisco Unified Wireless Networks......Page 314
Cisco WLAN Implementation......Page 315
WLAN Components......Page 317
WLSE Software Features......Page 318
CiscoWorks WLSE and WLSE Express......Page 319
Simplified WLSE Express Setup......Page 320
WLSE Summary......Page 321
Cisco Wireless Control System......Page 322
WCS Base Software Features......Page 323
WCS System Features......Page 324
Cisco WCS System Requirements......Page 325
WCS Summary Pages......Page 326
Wireless Location Appliance......Page 327
Wireless Location Appliance Applications......Page 328
Changing the Root Password......Page 329
Adding a Wireless LAN Controller......Page 330
Configuring Access Points......Page 331
Adding a Campus Map......Page 332
Adding a New Building......Page 333
Rogue Access Point Alarms......Page 335
Rogue Access Point Location......Page 336
Foundation Summary......Page 337
Q&A......Page 340
Part IV: Appendix......Page 342
“Do I Know This Already?” Quiz......Page 344
Q&A......Page 345
“Do I Know This Already?” Quiz......Page 349
Q&A......Page 350
“Do I Know This Already?” Quiz......Page 352
Q&A......Page 353
Q&A......Page 355
Q&A......Page 358
“Do I Know This Already?” Quiz......Page 361
Q&A......Page 362
Q&A......Page 363
Q&A......Page 367
Q&A......Page 369
Q&A......Page 373
Index......Page 377
