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CCNA Data Center DCICN 640-911 Official Cert Guide

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  • Copyright 2015
  • Dimensions: 7-3/8" x 9-1/8"
  • Edition: 1st
  • eBook (Watermarked)
  • ISBN-10: 0-13-378783-4
  • ISBN-13: 978-0-13-378783-2

Trust the best-selling Official Cert Guide series from Cisco Press to help you learn, prepare, and practice for exam success. This series is built with the objective of providing assessment, review, and practice to help ensure you are fully prepared for your certification exam.
* Master Cisco CCNA Data Center DCICN 640-911 exam topics
* Assess your knowledge with chapter-opening quizzes
* Review key concepts with exam preparation tasks

This is the eBook edition of the CCNA Data Center DCICN 640-911 Official Cert Guide. This eBook does not include the companion CD-ROM with practice exam that comes with the print edition.

CCNA Data Center DCICN 640-911 Official Cert Guide from Cisco Press enables you to succeed on the exam the first time and is the only self-study resource approved by Cisco. Expert instructors and engineers Wendell Odom and Chad Hintz share preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills. 

This complete, official study package includes
* A test-preparation routine proven to help you pass the exam
* "Do I Know This Already?" quizzes, which enable you to decide how much time you need to spend on each section
* Chapter-ending and part-ending exercises, which help you drill on key concepts you must know thoroughly
* A final preparation chapter that guides you through tools and resources to help you craft your review and test-taking strategies
* A Nexus lab guide appendix, with advice for building hands-on Nexus labs
* Study plan suggestions and templates to help you organize and optimize your study time

Well regarded for its level of detail, study plans, assessment features, and challenging review questions and exercises, this official study guide helps you master the concepts and techniques that ensure your exam success.

CCNA Data Center DCICN 640-911 Official Cert Guide is part of a recommended learning path from Cisco that includes simulation and hands-on training from authorized Cisco Learning Partners and self-study products from Cisco Press. To find out more about instructor-led training, e-learning, and hands-on instruction offered by authorized Cisco Learning Partners worldwide, please visit

The official study guide helps you master topics on the CCNA Data Center DCICN 640-911 exam, including
* Networking fundamentals
* Installing, operating, and configuring Nexus switches
* VLANs and trunking concepts and configuration
* Spanning Tree Protocol (STP) concepts and configuration
* IP addressing and subnetting
* IPv6 fundamentals
* Cisco Nexus IPv4 routing configuration and routing protocol implementation
* IPv4 access control lists (ACL) on Nexus switches

Table of Contents

Introduction xxxi

Getting Started 1

Part I: Networking Fundamentals 9

Chapter 1 The TCP/IP and OSI Networking Models 11

“Do I Know This Already?” Quiz 11

Foundation Topics 14

Perspectives on Networking 14

TCP/IP Networking Model 15

    History Leading to TCP/IP 16

    Overview of the TCP/IP Networking Model 17

    TCP/IP Application Layer 19

        HTTP Overview 19

        HTTP Protocol Mechanisms 20

    TCP/IP Transport Layer 21

        TCP Error Recovery Basics 21

        Same-Layer and Adjacent-Layer Interactions 22

    TCP/IP Network Layer 22

        Internet Protocol and the Postal Service 23

        Internet Protocol Addressing Basics 24

        IP Routing Basics 25

    TCP/IP Link Layer (Data Link Plus Physical) 26

    TCP/IP Model and Terminology 28

        Comparing the Original and Modern TCP/IP Models 28

        Data Encapsulation Terminology 28

        Names of TCP/IP Messages 30

OSI Networking Model 30

    Comparing OSI and TCP/IP 30

    Describing Protocols by Referencing the OSI Layers 31

    OSI Layers and Their Functions 32

    OSI Layering Concepts and Benefits 33

    OSI Encapsulation Terminology 34

Exam Preparation Tasks 36

Review All the Key Topics 36

Definitions of Key Terms 36

Chapter 2 Fundamentals of Ethernet LANs 39

“Do I Know This Already?” Quiz 39

Foundation Topics 42

An Overview of LANs 42

    Typical SOHO LANs 42

    Typical Enterprise Campus LANs 43

    Typical Data Center Ethernet LAN 44

    The Variety of Ethernet Physical Layer Standards 45

    Consistent Behavior over All Links Using the Ethernet Data Link Layer 46

Building Physical Ethernet Networks with UTP 47

    Transmitting Data Using Twisted Pairs 47

    Breaking Down a UTP Ethernet Link 48

    UTP Cabling Pinouts for 10BASE-T and 100BASE-T 51

        Straight-Through Cable Pinout 51

        Crossover Cable Pinout 53

        Choosing the Right Cable Pinouts 54

    UTP Cabling Pinouts for 1000BASE-T 55

Sending Data in Ethernet Networks 55

    Ethernet Data-Link Protocols 55

        Ethernet Addressing 56

        Identifying Network Layer Protocols with the Ethernet Type Field 58

        Error Detection with FCS 59

    Sending Ethernet Frames with Switches and Hubs 59

        Sending in Modern Ethernet LANs Using Full-Duplex 59

        Using Half-Duplex with LAN Hubs 60

Exam Preparation Tasks 63

Review All the Key Topics 63

Complete the Tables and Lists from Memory 63

Definitions of Key Terms 64

Chapter 3 Fundamentals of WANs 67

“Do I Know This Already?” Quiz 67

Foundation Topics 70

Leased Line WANs 70

    Positioning Leased Lines with LANs and Routers 70

    Physical Details of Leased Lines 71

        Leased Line Cabling 72

        Building a WAN Link in a Lab 73

    Data Link Details of Leased Lines 74

        HDLC Basics 74

        How Routers Use a WAN Data Link 75

Ethernet as a WAN Technology 77

    Ethernet WANs that Create a Layer 2 Service 78

    How Routers Route IP Packets Using Ethernet Emulation 79

Accessing the Internet 80

    The Internet as a Large WAN 80

    Internet Access (WAN) Links 81

    Digital Subscriber Line 82

    Cable Internet 84

Exam Preparation Tasks 86

Review All the Key Topics 86

Complete the Tables and Lists from Memory 86

Definitions of Key Terms 86

Chapter 4 Fundamentals of IPv4 Addressing and Routing 89

“Do I Know This Already?” Quiz 89

Foundation Topics 92

Overview of Network Layer Functions 92

    Network Layer Routing (Forwarding) Logic 92

        Host Forwarding Logic: Send the Packet to the Default Router 93

        R1 and R2’s Logic: Routing Data Across the Network 94

        R3’s Logic: Delivering Data to the End Destination 94

    How Network Layer Routing Uses LANs and WANs 94

    IP Addressing and How Addressing Helps IP Routing 95

    Routing Protocols 97

IPv4 Addressing 97

    Rules for IP Addresses 98

    Rules for Grouping IP Addresses 98

        Class A, B, and C IP Networks 99

        The Actual Class A, B, and C IP Networks 101

    IP Subnetting 103

IPv4 Routing 105

    IPv4 Host Routing 105

    Router Forwarding Decisions and the IP Routing Table 106

        A Summary of Router Forwarding Logic 106

        A Detailed Routing Example 107

IPv4 Routing Protocols 109

Other Network Layer Features 111

    Using Names and the Domain Name System 111

    The Address Resolution Protocol 112

    ICMP Echo and the ping Command 113

Exam Preparation Tasks 115

Review All the Key Topics 115

Complete the Tables and Lists from Memory 115

Definitions of Key Terms 115

Chapter 5 Fundamentals of TCP/IP Transport and Applications 117

“Do I Know This Already?” Quiz 117

Foundation Topics 120

TCP/IP Layer 4 Protocols: TCP and UDP 120

    Transmission Control Protocol 121

        Multiplexing Using TCP Port Numbers 122

        Popular TCP/IP Applications 125

        Connection Establishment and Termination 126

        Error Recovery and Reliability 127

        Flow Control Using Windowing 130

    User Datagram Protocol 131

TCP/IP Applications 132

    QoS Needs and the Impact of TCP/IP Applications 132

        Defining Interactive and Batch Applications 132

        Real-Time Voice and Video Applications 133

    The World Wide Web, HTTP, and SSL 134

        Uniform Resource Locators 134

        Finding the Web Server Using DNS 135

        Transferring Files with HTTP 137

        How the Receiving Host Identifies the Correct Receiving Application 138

Exam Preparation Tasks 140

Review All the Key Topics 140

Complete the Tables and Lists from Memory 140

Definitions of Key Terms 140

Part I Review 142

Part II: Ethernet LAN Basics 147

Chapter 6 Building Ethernet LANs with Switches 149

“Do I Know This Already?” Quiz 149

Foundation Topics 152

Ethernet History 152

    Early Ethernet with Coaxial Cabling 152

    Ethernet Devices 154

        Ethernet Repeaters 154

        10BASE-T with Hub 155

        Ethernet Transparent Bridges 157

        Ethernet Switches 158

    Ethernet Standards 159

        Ethernet Data-Link Protocols 160

        Ethernet Physical Layer Standards 161

        Ethernet Competition 162

Switching Logic 164

    Layer 2 Switching Basics 164

    The Forward Versus Filter Decision 165

        How Switches Learn MAC Addresses 167

        Flooding Frames 167

        Avoiding Loops Using Spanning Tree Protocol 168

    LAN Switching Summary 169

Design Choices in Ethernet LANs 170

    Collision Domains, Broadcast Domains, and VLANs 170

        Collision Domains 170

        Broadcast Domains 171

        Virtual LANs and Broadcast Domains 172

        The Impact of Collision and Broadcast Domains on LAN Design 173

    Ethernet LAN Media and Cable Lengths 174

    Autonegotiation 175

        Autonegotiation Results When Only One Node Uses Autonegotiation 176

        Autonegotiation and LAN Hubs 178

Exam Preparation Tasks 179

Review All the Key Topics 179

Complete the Tables and Lists from Memory 179

Definitions of Key Terms 180

Chapter 7 Installing and Operating Nexus Switches 183

“Do I Know This Already?” Quiz 183

Foundation Topics 186

Accessing the Cisco Nexus 5500 Switch CLI 186

    Cisco Nexus Switches and the 5500 Switch 186

    Accessing the Cisco NX-OS CLI 186

        Cabling the Console Connection 187

        Configuring the Terminal Emulator for the Console 188

        Accessing the CLI with Telnet and SSH in NX-OS 189

        Management Interface 190

        Password Security for CLI Access 191

    User Settings 192

        CLI Help Features 194

    The debug and show Commands 196

Introduction to Cisco NX-OS 196

    Software Modularity in Cisco NX-OS 197

    Service Restart in Cisco NX-OS 198

    Software High Availability in Cisco NX-OS 199

        In-Service Software Upgrades 199

    Cisco NX-OS Licensing 200

    Cisco NX-OS and Cisco IOS Comparison 201

Configuring Cisco NX-OS Software 202

    Configuration Submodes and Contexts 202

    Storing Switch Configuration Files 204

    Copying and Erasing Configuration Files 206

    Initial Configuration (Setup Mode) 208

NX-OS Version and Other Reload Facts 209

Exam Preparation Tasks 211

Review All the Key Topics 211

Complete the Tables and Lists from Memory 211

Definitions of Key Terms 211

Command References 211

Chapter 8 Configuring Ethernet Switching 215

“Do I Know This Already?” Quiz 215

Foundation Topics 217

Configuration of Features in Common on all Nexus Switches 217

    Securing the Switch CLI 217

        Securing Access with Local Usernames and Passwords 217

        Securing Access with External Authentication Servers 218

        Configuring Secure Shell 219

        Banners 220

        History Buffer Commands 221

        The logging synchronous and exec-timeout Commands 222

Nexus Switch Configuration and Operation 222

    Switch Virtual Interface Concept Inside a Switch 223

    Configuring IPv4 on a Cisco Nexus Switch 223

    Verifying IPv4 on a Switch 224

    Configuring Switch Interfaces 225

    Securing Unused Switch Interfaces 226

    Predicting the Contents of the MAC Address Table 227

        Scenario 1: Communication Between S1 and S2 228

        Scenario 2: Communication from S1 to S3 228

Exam Preparation Tasks 230

Review All the Key Topics 230

Complete the Tables and Lists from Memory 230

Definitions of Key Terms 230

Command References 230

Part II Review 234

Part III: Ethernet Virtual LANs and Spanning Tree 239

Chapter 9 VLAN and Trunking Concepts 241

“Do I Know This Already?” Quiz 241

Foundation Topics 244

Virtual LANs and VLAN Trunks 244

    Creating Multiswitch VLANs Using Trunking 245

    The 802.1Q and ISL VLAN Trunking Protocols 247

Forwarding Data Between VLANs 248

    Routing Packets Between VLANs with a Router 249

    Routing Packets with a Layer 3 Switch 251

VLAN Trunking Protocol 252

    VTP Functions 252

    Making VTP Work with VTP Servers and Clients 253

    Disabling VTP 256

    Summary of VTP Features 257

Exam Preparation Tasks 259

Review All the Key Topics 259

Complete the Tables and Lists from Memory 259

Definitions of Key Terms 259

Chapter 10 VLAN Trunking and Configuration 261

“Do I Know This Already?” Quiz 261

Foundation Topics 264

VLAN Configuration and Verification 264

    VLAN Guidelines for Cisco Nexus Switches 264

    Creating VLANs and Assigning Access VLANs to an Interface 265

        VLAN Configuration Example 1: Full VLAN Configuration 265

        VLAN Configuration Example 2: Shorter VLAN Configuration 268

VLAN Trunking Configuration and Verification 268

    Controlling Which VLANs Can Be Supported on a Trunk 271

VTP Configuration and Verification 275

    Enabling VTP 275

    Limiting VTP Using Pruning 278

Exam Preparation Tasks 280

Review All the Key Topics 280

Complete the Tables and Lists from Memory 280

Command Reference to Check Your Memory 280

Chapter 11 Spanning Tree Protocol Concepts 283

“Do I Know This Already?” Quiz 283

Foundation Topics 286

Spanning Tree Protocol (IEEE 802.1D) 286

    The Need for Spanning Tree 286

    What IEEE 802.1D Spanning Tree Does 288

        How Spanning Tree Works 290

        The STP Bridge ID and Hello BPDU 291

        Electing the Root Switch 292

        Choosing Each Switch’s Root Port 294

        Tiebreakers for Root Port 296

        Choosing the Designated Port on Each LAN Segment 296

    Influencing and Changing the STP Topology 297

        Making Configuration Changes to Influence the STP Topology 298

        Reacting to State Changes That Affect the STP Topology 298

        How Switches React to Changes with STP 299

        Changing Interface States with STP 300

Optional STP Features 301

    EtherChannel 302

    PortFast 303

    BPDU Guard 303

Rapid STP (IEEE 802.1w) 304

    RSTP and the Alternate (Root) Port 305

    RSTP States and Processes 306

        RSTP Backup (Designated) Ports 307

Exam Preparation Tasks 309

Review All the Key Topics 309

Complete the Tables and Lists from Memory 309

Definitions of Key Terms 309

Chapter 12 Cisco Nexus Spanning Tree Protocol Implementation 311

“Do I Know This Already?” Quiz 311

Foundation Topics 314

STP Configuration and Verification 314

    Connecting STP Concepts to STP Configuration Options 315

        Per-VLAN Configuration Settings 315

        The Bridge ID and System ID Extension 316

        Per-VLAN Port Costs 317

        STP Configuration Option Summary 317

    Verifying STP Operation 318

Improving STP Operation 321

    Configuring STP Port Costs 321

    Configuring Priority to Influence the Root Election 322

    Spanning-Tree Port Types 324

    Configuring PortFast and BPDU Guard 324

    Configuring EtherChannel 326

        Configuring a Manual EtherChannel 326

        Configuring Dynamic EtherChannels 328

    Troubleshooting EtherChannel 329

        Incorrect Options on the channel-group Command 329

        Configuration Checks Before Adding Interfaces to EtherChannels 331

Exam Preparation Tasks 333

Review All the Key Topics 333

Definitions of Key Terms 333

Command Reference to Check Your Memory 333

Part III Review 336

Part IV: IP Addressing and Subnetting 341

Chapter 13 Perspectives on IPv4 Subnetting 343

“Do I Know This Already?” Quiz 343

Foundation Topics 346

Introduction to Subnetting 346

    Subnetting Defined Through a Simple Example 346

    Operational View Versus Design View of Subnetting 347

Analyze Subnetting and Addressing Needs 348

    Rules About Which Hosts Are in Which Subnet 348

    Subnet Rules with Layer 3 Switches 349

    Determine the Number of Subnets 351

    Determine the Number of Hosts per Subnet 353

    One Size Subnet Fits All (Or Not) 354

        Defining the Size of a Subnet 354

        One Size Subnet Fits All 355

        Multiple Subnet Sizes (Variable-Length Subnet Masks) 356

Make Design Choices 357

    Choose a Classful Network 357

        Public IP Networks 357

        Growth Exhausts the Public IP Address Space 358

        Private IP Networks 359

        Choose an IP Network During the Design Phase 360

    Choose the Mask 360

        Classful IP Networks Before Subnetting 361

        Borrow Host Bits to Create Subnet Bits 361

        Choose Enough Subnet and Host Bits 362

        Example Design:, 200 Subnets, 200 Hosts 364

        Masks and Mask Formats 364

    Build a List of All Subnets 365

Plan the Implementation 366

    Assign Subnets to Different Locations 367

    Choose Static and Dynamic Ranges per Subnet 367

Foundation Topics 369

Review All the Key Topics 369

Complete the Tables and Lists from Memory 369

Definitions of Key Terms 369

Chapter 14 Analyzing Classful IPv4 Networks 371

“Do I Know This Already?” Quiz 371

Foundation Topics 374

Classful Network Concepts 374

    IPv4 Network Classes and Related Facts 374

        Actual Class A, B, and C Networks 375

        Address Formats 376

        Default Masks 377

    Number of Hosts per Network 377

    Deriving the Network ID and Related Numbers 378

    Unusual Network IDs and Network Broadcast Addresses 380

Practice with Classful Networks 381

    Practice Deriving Key Facts Based on an IP Address 381

    Practice Remembering the Details of Address Classes 382

    Additional Practice 383

Exam Preparation Tasks 384

Review All the Key Topics 384

Complete the Tables and Lists from Memory 384

Definitions of Key Terms 384

Practice 384

    Answers to Earlier Practice Problems 385

    Answers to Practice Problem 7 (From Table 14-5) 385

    Answers to Practice Problem 8 (From Table 14-5) 386

    Answers to Practice Problem 9 (From Table 14-5) 386

Chapter 15 Analyzing Subnet Masks 389

“Do I Know This Already?” Quiz 389

Foundation Topics 392

Subnet Mask Conversion 392

    Three Mask Formats 392

    Converting Between Binary and Prefix Masks 393

    Converting Between Binary and DDN Masks 394

    Converting Between Prefix and DDN Masks 396

    Practice Converting Subnet Masks 397

Identifying Subnet Design Choices Using Masks 398

    Masks Divide the Subnet’s Addresses into Two Parts 399

    Masks and Class Divide Addresses into Three Parts 400

    Classless and Classful Addressing 401

    Calculations Based on the IPv4 Address Format 401

    Practice Analyzing Subnet Masks 403

Exam Preparation Tasks 405

Review All the Key Topics 405

Complete the Tables and Lists from Memory 405

Definitions of Key Terms 405

Practice 405

Answers to Earlier Practice Problems 406

Chapter 16 Analyzing Existing Subnets 409

“Do I Know This Already?” Quiz 409

Foundation Topics 412

Defining a Subnet 412

    An Example with Network and Four Subnets 412

    Subnet ID Concepts 414

    Subnet Broadcast Address 415

    Range of Usable Addresses 415

Analyzing Existing Subnets: Binary 416

    Finding the Subnet ID: Binary 416

    Finding the Subnet Broadcast Address: Binary 418

    Binary Practice Problems 419

    Shortcut for the Binary Process 420

    Brief Note About Boolean Math 422

    Finding the Range of Addresses 422

Analyzing Existing Subnets: Decimal 422

    Analysis with Easy Masks 423

    Predictability in the Interesting Octet 424

    Finding the Subnet ID: Difficult Masks 425

        Resident Subnet Example 1 426

        Resident Subnet Example 2 427

        Resident Subnet Practice Problems 427

    Finding the Subnet Broadcast Address: Difficult Masks 428

        Subnet Broadcast Example 1 428

        Subnet Broadcast Example 2 429

        Subnet Broadcast Address Practice Problems 430

Practice Analyzing Existing Subnets 430

    A Choice: Memorize or Calculate 430

    Additional Practice 431

Exam Preparation Tasks 432

Review All the Key Topics 432

Complete the Tables and Lists from Memory 432

Definitions of Key Terms 432

Practice 432

Answers to Earlier Practice Problems 433

Chapter 17 Fundamentals of IP Version 6 437

“Do I Know This Already?” Quiz 437

Foundation Topics 440

Introduction to IP Version 6 440

    The Need and Effect of a New Internet Protocol 440

        Additional Motivations for IPv6 441

        Many Protocols Updated 442

    Introduction to IPv6 Addresses and Prefixes 442

        Representing Full (Unabbreviated) IPv6 Addresses 443

        Abbreviating IPv6 Addresses 443

        Expanding IPv6 Addresses 444

        Representing the Prefix Length of an Address 445

        Calculating the IPv6 Prefix (Subnet ID) 445

    Assigning Unique IPv6 Prefixes Across the Globe 447

IPv6 Addressing and Subnetting 449

    Global Unicast Addresses and IPv6 Subnetting 449

        IPv6 Subnetting Concepts 450

        Assign Subnets and Addresses 452

        The Actual Global Unicast Addresses 453

    Unique Local Unicast Addresses 453

    Link Local Addresses 454

    IPv6 Multicast Addresses 455

    Miscellaneous IPv6 Addresses 456

Implementing IPv6 457

    IPv6 Address Assignment 457

        Dynamic Assignment of the Interface ID with EUI-64 457

        Discovering the IPv6 Prefix with SLAAC 459

        Dynamic Configuration Using Stateful DHCP 460

    IPv6 Transition and Coexistence 461

        Dual Stack 462

        Tunneling IPv6 Inside IPv4 462

Exam Preparation Tasks 464

Review All the Key Topics 464

Complete the Tables and Lists from Memory 464

Definitions of Key Terms 464

Answers to Earlier Practice Problems 464

Part IV Review 466

Part V: IPv4 Routing 471

Chapter 18 IPv4 Routing Concepts 473

“Do I Know This Already?” Quiz 473

Foundation Topics 475

IP Routing 475

    IPv4 Routing Process Reference 475

    An Example of IP Routing 478

        Host Forwards the IP Packet to the Default Router (Gateway) 478

        Routing Step 1: Decide Whether to Process the Incoming Frame 479

        Routing Step 2: Deencapsulation of the IP Packet 480

        Routing Step 3: Choosing Where to Forward the Packet 480

        Routing Step 4: Encapsulating the Packet in a New Frame 481

        Routing Step 5: Transmitting the Frame 482

    Internal Processing on Cisco Routers 482

        Potential Routing Performance Issues 483

        Cisco Router Fast Switching and CEF 483

Cisco Nexus Switch Operations with Routing 484

Exam Preparation Tasks 488

Review All the Key Topics 488

Complete the Tables and Lists from Memory 488

Definitions of Key Terms 488

Chapter 19 Cisco Nexus IPv4 Routing Configuration 491

“Do I Know This Already?” Quiz 491

Foundation Topics 494

Configuring Connected Routes on Cisco Nexus Switches 494

    Direct and Local Routes and the ip address Command 494

    Routing Between Subnets on VLANs 497

        Configuring Routing to VLANs Using a Layer 3 Switch 497

Configuring Static Routes 499

    Static Route Configuration 499

    Static Default Routes 501

Exam Preparation Tasks 502

Review All the Key Topics 502

Complete the Tables and Lists from Memory 502

Definitions of Key Terms 502

Command Reference to Check Your Memory 502

Chapter 20 IPv4 Routing Protocol Concepts 505

“Do I Know This Already?” Quiz 505

Foundation Topics 508

Introduction to Routing Protocols 508

    History of Interior Gateway Protocols 508

    Comparing IGPs 509

    Distance Vector Basics 511

        The Concept of a Distance and a Vector 511

        Full Update Messages and Split Horizon 512

        Monitoring Neighbor State with Periodic RIP Updates 513

        Split Horizon 513

        Route Poisoning 514

RIP Concepts and Operation 515

    Features of Both RIPv1 and RIPv2 515

    Differences Between RIPv1 and RIPv2 516

EIGRP Concepts and Operation 517

    EIGRP Maintains Neighbor Status Using Hello 518

    EIGRP Topology and the Metric Calculation 518

    EIGRP Convergence 519

    EIGRP Summary 521

Understanding the OSPF Link-State Routing Protocol 521

    OSPF Comparisons with EIGRP 521

    Building the OSPF LSDB and Creating IP Routes 522

        Topology Information and LSAs 522

        Applying Dijkstra SPF Math and OSPF Metrics to Find the Best Routes 524

    Scaling OSPF Through Hierarchical Design 525

Exam Preparation Tasks 528

Review All the Key Topics 528

Definitions of Key Terms 528

Chapter 21 Nexus Routing Protocol Configuration 531

“Do I Know This Already?” Quiz 531

Foundation Topics 533

RIP Version 2 Configuration on NX-OS 536

EIGRP Configuration on NX-OS 541

OSPF Configuration on NX-OS 546

Exam Preparation Tasks 551

Review All the Key Topics 551

Definitions of Key Terms 551

Command Reference to Check Your Memory 551

Chapter 22 IPv4 Access Control Lists on Cisco Nexus Switches 555

“Do I Know This Already?” Quiz 555

Foundation Topics 557

IPv4 Access Control List Basics 557

    ACL Location and Direction 557

    Matching Packets 558

    Taking Action When a Match Occurs 559

    Types of IP ACLs 559

    List Logic with IP ACLs 560

    Matching Logic and Command Syntax 562

    Matching TCP and UDP Port Numbers 562

    Implementing Cisco Nexus IPv4 ACLs 566

        ACL Example 1 566

        ACL Example 2 567

Practice Cisco Nexus IPv4 ACLs 568

    Practice Building access-list Commands 568

Exam Preparation Tasks 570

Review All the Key Topics 570

Definitions of Key Terms 570

Appendix H Practice Problems 570

Command Reference to Check Your Memory 570

Part V Review 572

Part VI: Final Preparation 577

Chapter 23 Final Review 579

Advice About the Exam Event 579

    Learn the Question Types Using the Cisco Certification Exam Tutorial 579

    Think About Your Time Budget Versus Numbers of Questions 580

    A Suggested Time-Check Method 581

    Miscellaneous Pre-Exam Suggestions 582

    Exam-Day Advice 582

Exam Review 583

    Practice Subnetting and Other Math-Related Skills 583

    Take Practice Exams 585

        Practicing Taking the DCICN Exam 585

        Advice on How to Answer Exam Questions 586

        Taking Other Practice Exams 587

    Find Knowledge Gaps Through Question Review 588

    Practice Hands-On CLI Skills 591

        Review Mind Maps from Part Review 591

    Other Study Tasks 591

    Final Thoughts 591

Part VII: Appendices 593

Appendix A Answers to the “Do I Know This Already?” Quizzes 595

Appendix B DCICN Exam Updates 613

Appendix C Numeric Reference Tables 615

Appendix D Nexus Lab Guide 623

DVD-only Appendices

Appendix E Practice for Chapter 14: Analyzing Classful IPv4 Networks

Appendix F Practice for Chapter 15: Analyzing Subnet Masks

Appendix G Practice for Chapter 16: Analyzing Existing Subnets

Appendix H Practice for Chapter 22: IPv4 Access Control Lists on Cisco Nexus Switches

Appendix I Memory Tables

Appendix J Memory Tables Answer Key


9781587204548   TOC   10/15/2014

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For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.


Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.


If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.


This site is not directed to children under the age of 13.


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at and we will process the deletion of a user's account.


Users can always make an informed choice as to whether they should proceed with certain services offered by Cisco Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive:

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020