CCDA 200-310 Official Cert Guide, 5th edition

Introduction xxxvi

Part I General Network Design

Chapter 1 Network Design Methodology 3

“Do I Know This Already?” Quiz 3

Foundation Topics 6

Cisco Architectures for the Enterprise 6

Borderless Networks Architecture 7

Collaboration and Video Architecture 8

Data Center and Virtualization Architecture 8

Cisco Design Lifecycle: Plan, Build, Manage 9

Plan Phase 10

Build Phase 11

Manage Phase 11

Prepare, Plan, Design, Implement, Operate, and Optimize Phases 12

Prepare Phase 14

Plan Phase 14

Design Phase 14

Implement Phase 15

Operate Phase 15

Optimize Phase 15

Summary of PPDIOO Phases 15

Project Deliverables 16

Design Methodology 16

Identifying Customer Design Requirements 17

Characterizing the Existing Network 18

Steps in Gathering Information 19

Network Audit Tools 19

Network Checklist 23

Designing the Network Topology and Solutions 24

Top-Down Approach 24

Pilot and Prototype Tests 25

Design Document 25

References and Recommended Reading 26

Exam Preparation Tasks 28

Review All Key Topics 28

Complete Tables and Lists from Memory 28

Define Key Terms 28

Q&A 28

Chapter 2 Network Design Models 39

“Do I Know This Already?” Quiz 39

Foundation Topics 41

Hierarchical Network Models 41

Benefits of the Hierarchical Model 41

Hierarchical Network Design 42

Hierarchical Model Examples 46

Hub-and-Spoke Design 48

Collapsed Core Design 49

Cisco Enterprise Architecture Model 49

Enterprise Campus Module 50

Enterprise Edge Area 52

Service Provider Edge Module 56

Remote Modules 57

High Availability Network Services 59

Workstation-to-Router Redundancy and LAN High Availability Protocols 60

Server Redundancy 62

Route Redundancy 63

Link Media Redundancy 65

References and Recommended Reading 66

Exam Preparation Tasks 68

Review All Key Topics 68

Complete Tables and Lists from Memory 68

Define Key Terms 68

Q&A 68

Part II LAN and WAN Design

Chapter 3 Enterprise LAN Design 81

“Do I Know This Already?” Quiz 81

Foundation Topics 83

LAN Media 83

Ethernet Design Rules 83

Gigabit Ethernet Design Rules 85

10 Gigabit Ethernet Design Rules 87

EtherChannel 88

Comparison of Campus Media 88

LAN Hardware 89

Repeaters 89

Hubs 89

Bridges 89

Switches 90

Routers 91

Layer 3 Switches 92

Campus LAN Design and Best Practices 93

Best Practices for Hierarchical Layers 94

STP Design Considerations 101

Cisco STP Toolkit 103

VLAN and Trunk Considerations 105

Unidirectional Link Detection (UDLD) Protocol 105

Large-Building LANs 106

Enterprise Campus LANs 107

Medium-Size LANs 109

Small and Remote Site LANs 110

Server Farm Module 110

Enterprise Data Center Infrastructure 111

Campus LAN QoS Considerations 111

Multicast Traffic Considerations 113

References and Recommended Readings 114

Exam Preparation Tasks 115

Review All Key Topics 115

Complete Tables and Lists from Memory 115

Define Key Terms 115

Q&A 115

Chapter 4 Data Center Design 127

“Do I Know This Already?” Quiz 127

Foundation Topics 130

Enterprise DC Architecture 130

Data Center Foundation Components 131

Data Center Topology Components 132

Data Center Network Programmability 133

Challenges in the DC 136

Data Center Facility Aspects 136

Data Center Space 138

Data Center Power 139

Data Center Cooling 140

Data Center Heat 141

Data Center Cabling 141

Enterprise DC Infrastructure 143

Data Center Storage 144

Data Center Reference Architecture 146

Defining the DC Access Layer 147

Defining the DC Aggregation Layer 148

Defining the DC Core Layer 149

Security in the DC 150

Fabric Extenders 151

Virtualization Overview 151

Challenges 151

Defining Virtualization and Benefits 151

Virtualization Risks 152

Types of Virtualization 152

Virtualization Technologies 153

VSS 153

VRF 154

vPC 154

Device Contexts 155

Server Virtualization 155

Server Scaling 155

Virtual Switching 156

Network Virtualization Design Considerations 156

Data Center Interconnect 157

DCI Use Cases 157

DCI Transport Options 158

DCI L2 Considerations 159

Load Balancing in the DC 159

Application Load Balancing 159

Network Load Balancing 160

References and Recommended Readings 160

Exam Preparation Tasks 161

Review All Key Topics 161

Complete Tables and Lists from Memory 162

Define Key Terms 162

Q&A 162

Chapter 5 Wireless LAN Design 167

“Do I Know This Already?” Quiz 167

Foundation Topics 169

Wireless LAN Technologies 169

WLAN Standards 169

Service Set Identifier 171

WLAN Layer 2 Access Method 172

WLAN Security 172

Cisco Unified Wireless Network 175

Cisco UWN Architecture 175

Autonomous Access Points 176

Centralized WLAN Architecture 177

LWAPP 177

WLAN Authentication 182

WLAN Controller Components 183

Roaming and Mobility Groups 186

WLAN Design 190

Controller Redundancy Design: Deterministic vs. Dynamic 190

Radio Management and Radio Groups 192

RF Site Survey 194

Using EoIP Tunnels for Guest Services 194

Wireless Mesh for Outdoor Wireless 195

Campus Design Considerations 196

Branch Design Considerations 199

References and Recommended Readings 201

Exam Preparation Tasks 203

Review All Key Topics 203

Complete Tables and Lists from Memory 203

Define Key Terms 203

Q&A 204

Chapter 6 WAN Technologies and the Enterprise Edge 215

“Do I Know This Already?” Quiz 215

Foundation Topics 218

WAN and Enterprise Edge Overview 218

WAN Defined 218

WAN Edge Module 219

Enterprise Edge Modules 219

WAN Transport Technologies 220

ISDN 221

Digital Subscriber Line 222

Cable 222

Wireless 223

Frame Relay 224

Time-Division Multiplexing 225

Metro Ethernet 225

SONET/SDH 225

Multiprotocol Label Switching (MPLS) 226

Dark Fiber 227

Dense Wavelength-Division Multiplexing 228

Ordering WAN Technology and Contracts 228

WAN and Edge Design Methodologies 229

Response Time 230

Throughput 231

Reliability 231

Bandwidth Considerations 231

WAN Link Categories 232

Optimizing Bandwidth Using QoS 233

DMZ Connectivity 236

Segmenting DMZs 237

DMZ Services 238

Internet Connectivity 238

Centralized Internet (Branch) vs. Direct Internet (Branch) 240

High Availability for the Internet Edge 240

VPN Network Design 240

References and Recommended Readings 242

Exam Preparation Tasks 243

Review All Key Topics 243

Complete Tables and Lists from Memory 243

Define Key Terms 243

Q&A 244

Chapter 7 WAN Design 249

“Do I Know This Already?” Quiz 249

Foundation Topics 252

Traditional WAN Technologies 252

Hub-and-Spoke Topology 252

Full-Mesh Topology 253

Partial-Mesh Topology 253

Point-to-Point Topology 254

Remote Site Connectivity 254

Enterprise VPN vs. Service Provider VPN 255

Enterprise Managed VPN: IPsec 255

Service Provider—Managed Offerings 259

VPN Benefits 263

WAN Backup Design 263

WAN Backup over the Internet 263

Enterprise WAN Architecture 264

Cisco Enterprise MAN/WAN 265

Enterprise WAN/MAN Architecture Comparison 266

Enterprise WAN Components 268

Comparing Hardware and Software 269

Enterprise Branch Architecture 270

Branch Design 270

Branch Connectivity 271

Redundancy for Branches 271

Single WAN Carrier vs. Dual WAN Carriers 271

Single MPLS Carrier Site 272

Dual MPLS Carriers 272

Hybrid WAN: L3 VPN with IPsec VPN 273

Enterprise Teleworker Design 279

ISRs for Teleworkers 280

References and Recommended Readings 280

Exam Preparation Tasks 281

Review All Key Topics 281

Complete Tables and Lists from Memory 281

Define Key Terms 281

Q&A 282

Part III The Internet Protocol and Routing Protocols

Chapter 8 Internet Protocol Version 4 Design 287

“Do I Know This Already?” Quiz 287

Foundation Topics 289

IPv4 Header 289

ToS 291

IPv4 Fragmentation 295

IPv4 Addressing 296

IPv4 Address Classes 297

IPv4 Address Types 299

IPv4 Private Addresses 299