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NX-OS and Cisco Nexus Switching: Next-Generation Data Center Architectures


  • Sorry, this book is no longer in print.
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  • Description
  • Sample Content
  • Updates
  • Copyright 2010
  • Edition: 1st
  • Book
  • ISBN-10: 1-58705-892-8
  • ISBN-13: 978-1-58705-892-9

NX-OS and Cisco Nexus Switching

Next-Generation Data Center Architectures

The complete guide to planning, configuring, managing, and troubleshooting NX-OS in enterprise environments

Kevin Corbin, CCIE® No. 11577

Ron Fuller, CCIE No. 5851

David Jansen, CCIE No. 5952

Cisco® Nexus switches and the new NX-OS operating system are rapidly becoming the new de facto standards for data center distribution/aggregation layer networking. NX-OS builds on Cisco IOS to provide advanced features that will be increasingly crucial to efficient data center operations. NX-OS and Cisco Nexus Switching is the definitive guide to utilizing these powerful new capabilities in enterprise environments.

In this book, three Cisco consultants cover every facet of deploying, configuring, operating, and troubleshooting NX-OS in the data center. They review the key NX-OS enhancements for high availability, virtualization, In-Service Software Upgrades (ISSU), and security. In this book, you will discover support and configuration best practices for working with Layer 2 and Layer 3 protocols and networks, implementing multicasting, maximizing serviceability, providing consistent network and storage services, and much more.

The authors present multiple command-line interface (CLI) commands, screen captures, realistic configurations, and troubleshooting tips—all based on their extensive experience working with customers who have successfully deployed Nexus switches in their data centers.

Kevin Corbin, CCIE® No. 11577, is a Technical Solutions Architect for Cisco, specializing in data center technologies. Kevin works with enterprise customers to help them develop their next-generation data center architectures. Kevin has more than 14 years of server and networking experiencing including routing, switching, security, and content networking.

Ron Fuller, CCIE No. 5851 (Routing and Switching/Storage Networking), is a Technical Solution Architect for Cisco with 19 years of experience in the industry. His focus is working with enterprise customers to address their challenges with comprehensive end-to-end data center architectures.

David Jansen, CCIE No. 5952, is a Technical Solutions Architect for Cisco’s U.S. Enterprise Segment, where he works with enterprise customers to address end-to-end data center architectures. David has more than 20 years experience in the information technology industry.

  • Learn how Cisco NX-OS builds on and differs from IOS
  • Work with NX-OS user modes, management interfaces, and system files
  • Configure Layer 2 networking: VLANs/private VLANs, STP, virtual port channels, and unidirectional link detection
  • Configure Layer 3 EIGRP, OSPF, BGP, and First Hop Redundancy Protocols (FHRPs)
  • Set up IP multicasting with PIM, IGMP, and MSDP
  • Secure NX-OS with SSH, Cisco TrustSec, ACLs, port security, DHCP snooping, Dynamic ARP inspection, IP Source Guard, keychains, Traffic Storm Control, and more
  • Build high availability networks using process modularity and restart, stateful switchover, nonstop forwarding, and in-service software upgrades
  • Utilize NX-OS embedded serviceability, including Switched Port Analyzer (SPAN), Smart Call Home, Configuration Checkpoint/Rollback, and NetFlow
  • Use the NX-OS Unified Fabric to simplify infrastructure and provide ubiquitous network and storage services
  • Run NX-OS on Nexus 1000V server-based software switches

This book is part of the Networking Technology Series from Cisco Press®, which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers.

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Introduction to Cisco NX-OS

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Table of Contents

Foreword xiv

Introduction xv

Chapter 1 Introduction to Cisco NX-OS 1

NX-OS Overview 1

    NX-OS Supported Platforms 3

    Cisco NX-OS and Cisco IOS Comparison 3

NX-OS User Modes 5

    EXEC Command Mode 6

    Global Configuration Command Mode 6

    Interface Configuration Command Mode 7

Management Interfaces 8

    Controller Processor (Supervisor Module) 8

    Connectivity Management Processor (CMP) 9

    Telnet 11

    SSH 12

    XML 14

    SNMP 14

    DCNM 19

Managing System Files 20

    File Systems 21

    Configuration Files: Configuration Rollback 25

    Operating System Files 27

Virtual Device Contexts (VDCs) 28

    VDC Configuration 29

Troubleshooting 33

    show Commands 33

    debug Commands 34

Topology 34

Further Reading 35

Chapter 2 Layer 2 Support and Configurations 37

Layer 2 Overview 37

    Store-and-Forward Switching 38

    Cut-Through Switching 38

    Fabric Extension via the Nexus 2000 38

    Configuring Nexus 2000 Using Static Pinning 39

    Nexus 2000 Static Pinning Verification 41

    Configuring Nexus 2000 Using Port-Channels 45

    Nexus 2000 Static Pinning Verification 46

    L2 Forwarding Verification 48

    Layer 2 Forwarding on a Nexus 7000 48

VLANs 50

    Configuring VLANs 50

    VLAN Trunking Protocol 51

    Assigning VLAN Membership 52

    Verifying VLAN Configuration 53

Private VLANs 54

    Configuring PVLANs 55

    Verifying PVLAN Configuration 58

Spanning Tree Protocol 59

    Rapid-PVST+ Configuration 60

    MST Configuration 65

    Additional Spanning-Tree Configuration 69

    Spanning-Tree Toolkit 72

    Spanning-Tree Port Types 77

    Configuring Layer 2 Interfaces 78

    Virtualization Hosts 78

Virtual Port Channels 87

    VPC Peer-Gateway 94

Unidirectional Link Detection 94

Summary 96

Chapter 3 Layer 3 Support and Configurations 97


    EIGRP Operation 98

    Configuring EIGRP 99

    EIGRP Summarization 103

    EIGRP Stub Routing 106

    Securing EIGRP 107

    EIGRP Redistribution 109

OSPF 114

    OSPFv2 Configuration 114

    OSPF Summarization 120

    OSPF Stub Routing 123

    Securing OSPF 127

    OSPF Redistribution 129

BGP 137

    BGP Configuration 137

    BGP Neighbors 141

    Securing BGP 144

    BGP Peer Templates 146

    Advertising BGP Networks 148

    Modifying BGP Routing Metrics 150

    Verifying BGP-Specific Configuration 151

First Hop Redundancy Protocols (FHRP) 152

    HSRP 152

    VRRP 158

    GLBP 163

Summary 170

Chapter 4 IP Multicast Configuration 171

Multicast Operation 171

    Multicast Distribution Trees 172

    Reverse Path Forwarding 174

    Protocol Independent Multicast (PIM) 174

    RPs 176

PIM Configuration on Nexus 7000 177

    Configuring Static RPs 180

    Configuring BSRs 182

    Configuring Auto-RP 184

    Configuring Anycast-RP 186

    Configuring SSM and Static RPF 188

IGMP Operation 189

IGMP Configuration on Nexus 7000 190

IGMP Configuration on Nexus 5000 194

IGMP Configuration on Nexus 1000V 195

MSDP Configuration on Nexus 7000 197

Summary 199

Chapter 5 Security 201

Configuring RADIUS 202

    RADIUS Configuration Distribution 205

Configuring TACACS+ 211

    Enabling TACACS+ 212

Configuring SSH 221

Configuring Cisco TrustSec 224

    Layer 2 Solutions Between Data Centers 231

Configuring IP ACLs 232

Configuring MAC ACLs 234

Configuring VLAN ACLs 236

Configuring Port Security 237

    Security Violations and Actions 240

Configuring DHCP Snooping 242

Configuring Dynamic ARP Inspection 246

    Dynamic ARP Inspection Trust State 247

Configuring IP Source Guard 250

Configuring Keychain Management 252

Configuring Traffic Storm Control 253

Configuring Unicast RPF 255

Configuring Control Plane Policing 257

Configuring Rate Limits 266

SNMPv3 271

Summary 278

Chapter 6 High Availability 279

Physical Redundancy 279

    Redundant Power Supplies 280

    Redundant Cooling System 282

    Redundant Supervisors 285

    Redundant Ethernet Out-of-Band (EOBC) 286

    Redundant Fabric Modules 286

Generic Online Diagnostics 287

    Bootup Diagnostics 288

    Runtime Diagnostics 289

    On-Demand Diagnostics 294

NX-OS High-Availability Architecture 295

Process Modularity 295

Process Restart 297

Stateful Switchover 297

Nonstop Forwarding 299

In-Service Software Upgrades 299

Summary 309

Chapter 7 Embedded Serviceability Features 311

SPAN 311

    SPAN on Nexus 7000 312

    Configuring SPAN on Nexus 7000 313

    SPAN on Nexus 5000 318

    Configuring SPAN on Nexus 5000 319

    SPAN on Nexus 1000V 323

    Configuring SPAN on Nexus 1000V 324

ERSPAN on Nexus 1000V 326

Embedded Analyzer 331

Smart Call Home 342

    Smart Call Home Configuration 347

Configuration Checkpoint and Rollback 350

    Checkpoint Creation and Rollback 351

NetFlow 353

    Configuring NetFlow on Nexus 7000 354

    Configuring NetFlow on Nexus 1000V 357

Summary 360

Chapter 8 Unified Fabric 361

Unified Fabric Overview 361

Enabling Technologies 362

    10-Gigabit Ethernet 362

    Fibre Channel over Ethernet 364

Nexus 5000 Unified Fabric Configuration 364

N-Port Virtualization (NPV) 367

    N-Port Identification Virtualization 368

FCoE Configuration 369

Summary 373

Chapter 9 Nexus 1000V 375

Hypervisor and vSphere Introduction 375

Nexus 1000V System Overview 376

Nexus 1000V Switching Overview 379

    Nexus 1000V Manual Installation 382

Nexus 1000V VSM Installation 382

    Nexus 1000V GUI Installation 399

    Creating the Uplink Profile 405

    Adding the VEM to a ESX vSphere 4 Host 406

    Enabling the Telnet Server Process 414

    Changing the VSM Hostname 414

    Layer 3 Control 414

    VSM High Availability: Adding a Secondary VSM 421

Nexus 1000V Port Profiles 429

Summary 439

Index 440

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