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

Overview

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 ...

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Overview

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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Product Details

  • ISBN-13: 9781587058929
  • Publisher: Cisco Press
  • Publication date: 7/7/2010
  • Series: Networking Technology Series
  • Pages: 463
  • Product dimensions: 7.30 (w) x 9.00 (h) x 1.00 (d)

Meet the Author

Kevin Corbin, CCIE No. 11577, is a technology solutions architect with Cisco. In this role

for three years, 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. Kevin has also held

multiple certifications from Microsoft, Citrix, HP, Novell, and VMWare. Prior to joining

Cisco, Kevin worked for many large enterprises and most recently in a consulting capacity for

large enterprise customers.

Ron Fuller, CCIE No. 5851 (Routing and Switching/Storage Networking), is a technical solutions

architect for Cisco specializing in data center architectures. He has 19 years of experience

in the industry and has held certifications from Novell, HP, Microsoft, ISC2, SNIA, and

Cisco. His focus is working with Enterprise customers to address their challenges with comprehensive

end-to-end data center architectures. He lives in Ohio with his wife and three wonderful

children and enjoys travel and auto racing.

David Jansen, CCIE No. 5952, is a technical solutions architect for Data Center for Central

Area. David has more than 20 years experience in the information technology industry. He

has held multiple certifications from Microsoft, Novell, Checkpoint, and Cisco. His focus is

to work with Enterprise customers to address end-to-end data center Enterprise architectures.

David has been with Cisco for 12 years and working as a Technical Solutions Architect for 4

years and has provided unique experiences helping customers build architectures for

Enterprise data centers. David has also been instrumental in developing data center interconnect

solutions to address L2 requirements between multiple data centers to meet application

clusters and virtualization requirements. David has been presenting data center interconnect at

Cisco Live for 3 years. David holds a B.S.E. degree in computer science from the University of

Michigan (Go Blue!) and an M.A. degree in adult education from Central Michigan University.

About the Technical Reviewers

Phil Davis, CCIE No. 2021, is a technical solutions architect with Cisco, specializing in routing

and switching and data center technologies. Phil has been with Cisco for more than 10 years and

has more than 17 years of experience in the industry. Phil currently uses his expertise with

Enterprise customers designing their data center and multiprotocol network architectures. Phil

holds multiple certifications, including VMware’s VCP, and is often presenting on many of

today’s top technologies. Phil lives near Cincinnati, Ohio, with his wife and two children.

Eric Murray is a network engineer for a large healthcare company. He has more than 15 years

experience with designing, implementing, and maintaining Cisco Enterprise networks in the

fast-paced healthcare and manufacturing industries. Eric has implemented several Nexus data

center network designs and migrations and is a subject matter expert in utilizing Nexus 7000,

5000, and 2000 series switches. Eric is currently involved with designing, testing, implementing,

and providing technical support for a Cisco Unified Communications solution. Eric also

has extensive experience in multiprotocol WAN and data center LAN environments utilizing

Cisco switching and routing platforms.

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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 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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Sort by: Showing all of 3 Customer Reviews
  • Posted June 21, 2010

    more from this reviewer

    for advanced data center management

    The Nexus 7000 is well covered by the text, which is directed at system administrators of data centers. The product gives impressive flexibility for the design of such centers.

    It also subsumes the now standard Layer 3 protocols like OSPF, BGP and ISIS. Essentially you as sysadmin do not have to know the fine grained details of how these protocols work. You can entrust much of this to Nexus. This is reflected in the text, which deliberately does not go into many specifics of the protocols.

    But given the complexity of Nexus, much of the text shows how management controls are used, with numerous examples that demonstrate a surfeit of network data available to you.

    The book emphasises Layer 3 features, though there is also considerable support for Layer 2. For security contexts, Cisco has also provided several abilities; including the use of SSH for secure communication with an NX-OS machine. Access Control Lists figure prominently, letting you do testing and analysis of IP traffic.

    For some sysadmins whose main concern is uptime, chapters 6 and 7 are the most germane. These describe how high availability is possible, with a concomitant ease of configuration. Which also reduces your administrative cognitive workload.

    The last chapter shows how Cisco is supporting the use of virtual machines in data centers. Cisco figures that this will be strongly adopted in many centers. The Nexus has been made compatible with using a hypervisor and with enforcing VM security.
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