Shannon McFarland, CCIE No. 5245, is a corporate consulting engineer for Cisco, working as a technical

consultant for enterprise IPv6 deployment and data center design with a focus on application deployment

and virtual desktop infrastructure. Over the last 16 years, he has worked on large-scale enterprise campus

and WAN/branch network design, data center design and optimization for Microsoft operating systems

and server applications, as well as design and optimization of virtual desktop infrastructure deployments.

For the past 10 years, Shannon has been a frequent speaker at IPv6 events worldwide (notably Cisco Live

[formerly Networkers]), IPv6 summits, and other industry events. He has authored many papers and Cisco

Validated Designs (CVD) on IPv6, IP Multicast, Microsoft Exchange, VMware View, and other applications,

as well as contributed to many Cisco Press books. Prior to his time at Cisco, Shannon worked as a

consultant for a value-added reseller and also as a network engineer in the healthcare industry. Shannon

lives with his wife and children in Castle Rock, CO.

Muninder Sambi, CCIE No. 13915, is a manager of product marketing for the Cisco Catalyst 4500/4900

series platform. As a product line manager, he is responsible for defining product strategies on the multibillion-

dollar Catalyst 4500 and 4900 series platforms, which include next-generation product architectures

both for user access in Campus and Server access in the Data Center. Prior to this role, Muninder

played a key role in defining the long-term Software and Services strategy for Cisco’s modular switching

platforms (Catalyst 6500 and 4500/4900 series) including a focus on IPv6 innovations. Some of these

innovations enabled dual-stack IPv6 deployments in large enterprise and service provider networks.

Muninder is also a core member of Cisco’s IPv6 development council. Muninder has represented Cisco as

part of multiple network design architecture reviews with large enterprise customers. Over the last 12+

years, Muninder has worked on multiple Enterprise Campus, WAN, and Data Center designs. Prior to

working at Cisco, Muninder worked as a network consultant for one of India’s leading network integrators

and was responsible for designing and implementing LAN, WAN, and hosted Data Center networks.

Muninder lives with his wife and children in Fremont, California.

Nikhil Sharma, CCIE No. 21273, is a technical marketing engineer at Cisco, where he is responsible for

defining new features, both hardware and software, for the Catalyst 4500 product line. Over the last 10

years, Nikhil has worked with various enterprise customers to design and troubleshoot both large and

midsize campus and data center networks.

Sanjay Hooda, CCIE No. 11737, is a technical leader at Cisco, where he works with embedded systems

and helps define new product architectures. His current focus areas include high availability and messaging

in large-scale distributed switching systems. Over the last 14 years, Sanjay’s experience spans various

areas, including SCADA (Supervisor Control and Data Acquisition), large-scale software projects, and

enterprise campus and LAN, WAN, and data center network design.

IPv4 Address Exhaustion and the Workaround Options 2

IPv6 Market Drivers 3

    IPv4 Address Considerations 4

    Government IT Strategy 5

    Infrastructure Evolution 5

    Operating System Support 6

    Summary of Benefits of IPv6 6

Commonly Asked Questions About IPv6 6

    Does My Enterprise Need IPv6 for Business Growth? 6

    Will IPv6 Completely Replace IPv4? 9

    Is IPv6 More Complicated and Difficult to Manage and Deploy Compared

        to IPv4? 9

    Does IPv6 continue to allow my enterprise network to be multihomed to

        several service providers? 10

    Is quality of service better with IPv6? 10

    Is IPv6 automatically more secure than IPv4? 10

    Does the lack of NAT support in IPv6 reduce security? 10

IPv6 in the IETF 11

Enterprise IPv6 Deployment Status 12

Summary 15

Additional References 15

Network Design Principles 18

    Modularity 19

    Hierarchy 21

    Resiliency 24

Enterprise Core Network Design 24

Enterprise Campus Network Design 25

    Distribution Layer 25

    Access Layer 29

Enterprise Network Services Design 29

Enterprise Data Center Network Design 31

    Aggregation Layer 31

    Access Layer 32

    Data Center Storage Network Design 33

Enterprise Edge Network Design 37

    Headquarters Enterprise Edge Network Components 38

    Headquarters Enterprise Edge Network Design 39

    Branch Network Architecture 39

    Branch Edge Router Functionality 41

    Typical Branch Network Design 42

Summary 43

Additional References 43

Native IPv6 47

Transition Mechanisms 48

    Dual-Stack 48

    IPv6-over-IPv4 Tunnels 49

    IPv6 over MPLS 58

Protocol Translation/Proxy Mechanisms 62

    NAT-PT 63

    NAT64 64

Summary 64

Additional References 65

Multicast 67

    IPv6 Multicast Addressing 69

    Multicast Listener Discovery (MLD) for IPv6 71

    Multicast Routing: Protocol Independent Multicast (PIM) 72

Quality of Service (QoS) 76

    Differences Between IPv6 and IPv4 QoS 76

    IPv6 Extension Headers 78

    IPv4 and IPv6 Coexistence 79

IPv6 Routing 80

    OSPFv3 80

    EIGRPv6 83

    IS-IS 85

    BGP 87

Summary 89

Additional References 89

Determining Where to Begin 91

    Benefit Analysis 92

    Cost Analysis 93

    Risks 94

    Business Case 94

    Transition Team 95

    Training 96

Planning a Pilot 96

    Assessment 96

    Design 97

    Transition Mechanisms 98

    Network Services 98

    Security 98

    New Features in IPv6 99

    Scalability and Reliability 99

    Service Level Agreements 99

    Lessons Learned and Implementation 99

    Client/Server IPv6 Migration Scenarios 100

Planning Address Allocation 104

Summary 104

Additional References 105

Campus Deployment Models Overview 107

    Dual-Stack Model 108

    Hybrid Model 109

    Service Block Model 115

General Campus IPv6 Deployment Considerations 119

    Addressing 119

    Physical Connectivity 120

    VLANs 121

    Routing 121

    High Availability 122

    QoS 123

    Security 125

    Multicast 131

    Network Management 132

    Address Management 132

    Scalability and Performance 135

Implementing the Dual-Stack Model 137

    Network Topology 138

    Physical/VLAN Configuration 140

    Routing Configuration 143

    First-Hop Redundancy Configuration 145

    QoS Configuration 147

    Multicast Configuration 149

    Routed Access Configuration 151

    Cisco Virtual Switching System with IPv6 155

Implementing the Hybrid Model 161

    Network Topology 161

    Physical Configuration 162

    Tunnel Configuration 163

    QoS Configuration 171

    Infrastructure Security Configuration 173

Implementing the Service Block Model 174

    Network Topology 174

    Physical Configuration 176

    Tunnel Configuration 178

    QoS Configuration 180

Summary 181

Additional References 182

Virtualization Overview 186

    Virtualization Benefits 186

    Virtualization Categories 186

Network Virtualization 188

    Switch Virtualization 188

    Network Segmentation 188

    Network Services Virtualization 212

Desktop Virtualization 220

    IPv6 and Desktop Virtualization 221

    Desktop Virtualization Example: Oracle Sun Ray 222

Server Virtualization 223

Summary 223

Additional References 224

WAN/Branch Deployment Overview 226

    Single-Tier Profile 226

    Dual-Tier Profile 227

    Multitier Profile 228

General WAN/Branch IPv6 Deployment Considerations 229

    Addressing 230

    Physical Connectivity 230

    VLANs 231

    Routing 232

    High Availability 232

    QoS 233

    Security 233

    Multicast 236

    Management 236

    Scalability and Performance 238

WAN/Branch Implementation Example 238

    Tested Components 239

    Network Topology 240

WAN/Branch Deployment over Native IPv6 254

Summary 258

Additional References 258

Designing and Implementing a Dual-Stack Data Center 262

    Data Center Access Layer 264

Data Center Aggregation Layer 269

    Data Center Core Layer 279

Implementing IPv6 in a Virtualized Data Center 279

Implementing IPv6 for the SAN 281

    FCIP 281

    iSCSI 284

    Cisco MDS Management 285

Designing IPv6 Data Center Interconnect 286

    Design Considerations: Dark Fibre, MPLS, and IP 287

    DCI Services and Solutions 288

Summary 289

Additional References 289

Remote Access for IPv6 Using Cisco AnyConnect 292

Remote Access for IPv6 Using Cisco VPN Client 297

Summary 301

Additional References 301

Network Management Framework: FCAPS 304

    Fault Management 305

    Configuration Management 305

    Accounting Management 306

    Performance Management 306

    Security Management 306

IPv6 Network Management Applications 307

IPv6 Network Instrumentation 308

    Network Device Management Using SNMP MIBs 308

    IPv6 Application Visibility and Monitoring 312

IPv6 Network Management 330

    Monitoring and Reporting 331

    Network Services 333

    Access Control and Operations 334

IPv6 Traffic-Monitoring Tools 337

    SPAN, RSPAN, and ERSPAN 337

    VLAN Access Control List (VACL) Capture 340

Summary 341

Additional References 342

Sample Lab Topology 344

Sample Lab Addressing 347

Configuring the Networking Devices 348

Operating System, Application, and Management Deployment 348

Moving to a Pilot 359

Summary 360

Additional References 360

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