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Deploying Cisco Wide Area Application Services

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Deploying Cisco Wide Area Application Services

By Zach Seils, Joel Christner
Published May 8, 2008 by Cisco Press. Part of the Networking Technology series.

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Copyright 2008
Edition: 1st

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ISBN-10: 1-58705-494-9
ISBN-13: 978-1-58705-494-5

Design and deploy Cisco WAN optimization and application acceleration solutions for the enterprise WAN

Today, IT organizations are increasingly squeezed by competing demands. They must support more distributed users who demand greater availability and performance. They must protect their digital assets with far more robust security. And they must do it all while gaining far greater control over cost. Distributing IT resources increases management, hardware, and software overhead, but centralizing IT can worsen application performance. There is a solution to this quandary: Cisco application acceleration and WAN optimization technologies that permit IT to safely centralize distributed IT resources, meeting user performance expectations without replacing existing network infrastructure.

Deploying Cisco Wide Area Application Services is the first comprehensive guide to designing and deploying solutions with these Cisco technologies. Zach Seils and Joel Christner show how to deploy Cisco WAAS in a scalable, transparent, and seamless fashion that responds to both your business and technical challenges. Writing for network design and implementation engineers and other networking professionals, they cover the entire planning and configuration process. Drawing on their extensive experience implementing WAAS in the enterprise, they also offer real-world implementation examples and case studies–including full chapters on network, branch office, and data center integration.

Zach Seils, CCIE No. 7861, is a technical leader in the Cisco Advanced Services Data Center Networking Practice, where he specializes in designing, deploying, and troubleshooting application acceleration solutions for the largest Cisco enterprise and service provider customers.

Joel Christner, CCIE No. 15311, is director of product management for Reconnex Corporation, the industry leader in data loss prevention (DLP) solutions. Prior to Reconnex, Joel was senior manager of technical marketing for the Application Delivery Business Unit (ADBU) at Cisco, where he helped drive the product and technical strategy for Cisco Wide Area Application Services. Christner is coauthor of Application Acceleration and WAN Optimization Fundamentals.

Centrally provision applications to employees in any location without compromising performance
Reduce costs by centralizing servers, storage, and applications by leveraging optimization capabilities that integrate cleanly with your existing infrastructure
Thoroughly understand Cisco Wide Area Application Services (WAAS) and Wide Area Application Engine (WAE) and the business benefits provided by them

- - Perform effective WAAS planning, discovery, and analysis

- - Use WAAS and interception mechanisms such as WCCP or inline to transparently optimize flows traversing your network for end users accessing centrally deployed and centrally managed applications, files, and other information

- - Integrate application acceleration and optimization into data centers, branch offices, and other environments

- - Learn how to use the Cisco WAAS Central Manager, WAE device GUI, and command-line interface to configure, manage, and troubleshoot

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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Sample Content

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Network Integration and Interception

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Foreword xvi

Introduction xvii

Chapter 1 Introduction to Cisco Wide Area Application Services (WAAS) 3

Understanding Application Performance Barriers 3

Layer 4 Through Layer 7 4

Network Infrastructure 8

Introduction to Cisco WAAS 15

WAN Optimization 17

Application Acceleration 23

Other Features 29

Summary 31

Chapter 2 Cisco Wide Area Application Engine (WAE) Family 33

Cisco WAE Product Architecture 33

Disk Encryption 34

Central Management Subsystem 35

Interface Manager 35

Reporting Facilities 35

Network Interception and Bypass Manager 36

Application Traffic Policy Engine 36

Hardware Family 38

Router-Integrated Network Modules 38

Appliances 40

Licensing 42

Performance and Scalability Metrics 42

Device Memory 43

Disk Capacity 44

Number of Optimized TCP Connections 46

WAN Bandwidth and LAN Throughput 46

Number of Peers and Fan-Out 47

Number of Devices Managed 48

Summary 49

Chapter 3 Planning, Discovery, and Analysis 51

Planning Overview 51

Planning Overview Checklist 52

Requ irements Collection and Analysis 52

Site Information 54

Site Types 54

User Population 55

Physical Environment 55

Site Information Checklist 56

Network Infrastructure 56

WAN Topology 56

Remote Office Topology 59

Data Center Topology 60

Traffic Flows 62

Network Infrastructure Checklist 64

Application Characteristics 64

Application Requirements Checklist 65

File Services Requirements 65

Advanced Features 66

File Services Utilization 66

File Services Requirements Checklist 67

Platform Requirements 67

Platform Requirements Checklist 67

Scalability Requirements 67

Scalability Requirements Checklist 67

Availability Requirements 68

Availability Checklist 68

Management Requirements 68

SNMP Trap/Inform Routing 69

SNMP Community Strings 69

Syslog Servers 70

Management Requirements Checklist 70

Security Requirements 70

Security Requirements Checklist 72

Summary 73

Chapter 4 Network Integration and Interception 75

Interface Connectivity 75

Link Aggregation Using EtherChannel 78

Using the Standby Interface Feature 82

Interception Techniques and Protocols 86

Web Cache Communication Protocol 86

Policy-Based Routing 103

Inline Interception 105

Content Switching 109

Application Control Engine 109

Egress Methods for Intercepted Connections 111

Network Integration Best Practices 114

Summary 115

Chapter 5 Branch Office Network Integration 117

In-Path Deployment 117

Nonredundant Branch Office 118

Redundant Branch Office 122

Serial Clustering 125

Off-Path Deployment 127

Small to Medium-Sized Nonredundant Branch Office 127

Large Nonredundant Branch Office 134

Off-Path Redundant Topology 141

Policy-Based Routing Interception 158

Cisco IOS Firewall Integration 161

Summary 163

Chapter 6 Data Center Network Integration 165

Data Center Placement 165

Deployment Solutions 174

WCCP 175

Content Switching 186

Scaling Transparent Interception 192

WCCP Scalability 192

Application Control Engine Scalability 198

Firewall Integration 199

Summary 205

Chapter 7 System and Device Management 207

System and Device Management Overview 207

Initial Setup Script and Device Setup 208

Command-Line Interface 212

Central Manager Overview 213

Centralized Management System Service 216

Device Registration and Groups 219

Device Activation 220

Device Groups 222

Provisioned Management 224

Role-Based Access Control 224

Integration with Centralized Authentication 227

Device Configuration, Monitoring, and Management 229

Device Homepage 229

Status and Health Monitoring 232

Software Upgrade and Downgrade 235

Reporting and Logging 239

Backup and Restore of Central Manager 241

Summary 244

Chapter 8 Configuring WAN Optimization 247

Cisco WAAS WAN Optimization Capabilities 247

Transport Flow Optimization 247

Data Redundancy Elimination 249

Persistent LZ Compression 251

Automatic Discovery 251

Enabling and Disabling Features 253

TFO Blacklist Operation 255

Tuning TFO Buffers 257

Application Traffic Policy 261

Application Groups 262

Traffic Classifiers 264

Policy Maps 266

Negotiating Policies 269

EndPoint Mapper Classification 270

Reporting 274

Automatic Discovery Statistics 274

Connection Statistics and Details 276

WAN Optimization Statistics 279

Summary 283

Chapter 9 Configuring Application Acceleration 285

Application Acceleration Overview 285

Core Services 287

Edge Services 288

Connectivity Directives 289

Interaction with WAN Optimization 289

Configuring CIFS Acceleration 291

Configuring Core Services 291

Configuring Edge Services 294

Configuring Connectivity Directives 297

Examining CIFS Acceleration Traffic Policies 300

Verifying CIFS Acceleration 301

CIFS Preposition 304

CIFS Preposition Architecture 304

Configuring CIFS Preposition 306

Examining Preposition Statistics 311

Disconnected Mode of Operation 313

Domain Integration 314

Configuring Disconnected Mode of Operation 320

Summary 322

Chapter 10 Case Studies 325

Common Requirements 325

Existing WAN Topology 325

Remote Site Profile A 327

Profile A Site Requirements 327

Site Network Topology 327

WAE Placement and Interception 328

WAE Configuration Details 329

WAN Router Configuration Details 330

LAN Switch Configuration Details 331

Remote Site Profile B 333

Profile B Site Requirements 333

Site Network Topology 333

WAE Placement and Interception 334

WAE Configuration Details 334

WAN Router Configuration Details 336

Remote Site Profile C 337

Profile C Site Requirements 338

Site Network Topology 338

WAE Placement and Interception 338

WAE Configuration Details 340

WAN Router 1 Configuration Details 341

WAN Router 2 Configuration Details 343

Data Center Profile 345

Data Center Site Requirements 345

Site Network Topology 345

WAE Placement and Interception 346

WAE Configuration Details 348

Data Center Switch 1 Configuration Details 349

Data Center Switch 2 Configuration Details 352

Application Traffic Policy 355

Summary 357

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