Overview

  This is the only complete, all-in-one guide to deploying, running, and troubleshooting wireless networks with Cisco® Wireless LAN Controllers (WLCs) and Lightweight Access Point Protocol (LWAPP)/Control and Provisioning of Wireless Access Points (CAPWAP). Authored by two of the most experienced Cisco wireless support professionals, the book presents start-to-finish coverage of implementing WLCs in existing wired and wireless network environments, troubleshooting design-related issues, and using LWAPP/CAPWAP solutions to achieve your specific business and technical goals. One step at a time, you’ll walk through designing, configuring, maintaining, and scaling wireless networks using Cisco Unified Wireless technologies. The authors show how to use LWAPP/CAPWAP to control multiple Wi-Fi wireless access points at once, streamlining network administration and monitoring and maximizing scalability.  Drawing on their extensive problem-resolution experience, the authors also provide expert guidelines for troubleshooting, including an end-to-end problem-solving model available in no other book. Although not specifically designed to help you pass the CCIE® Wireless written and lab exams, this book does provide you with real-world configuration and troubleshooting examples. Understanding the basic configuration practices, how the products are designed to function, the feature sets, and what to look for while troubleshooting these features will be invaluable to anyone wanting to pass the CCIE Wireless exams.     Efficiently install, configure, and troubleshoot Cisco Wireless LAN Controllers Move autonomous wireless network solutions to LWAPP/CAPWAP Integrate LWAPP/CAPWAP solutions into existing wired networks Understand the next-generation WLC  architecture Use Hybrid REAP and Home AP solutions to centrally configure and control branch/remote access points without deploying controllers in every location Use Mobility Groups to provide system-wide mobility easily and cost-effectively Use Cisco WLC troubleshooting tools, and resolve client-related problems Maximize quality in wireless voice applications Build efficient wireless mesh networks Use RRM to manage RF in real-time, optimizing efficiency and performance Reference the comprehensive WLC and AP debugging guide   Part of the CCIE Professional Development Series, this is the first book to offer authoritative training for the new CCIE Wireless Exam. It will also serve as excellent preparation for Cisco’s new CCNP® Wireless exam.  

Full Product Details

Author:   Mark L. Gress ,  Lee Johnson
Publisher:   Pearson Education (US)
Imprint:   Cisco Press
Dimensions:   Width: 19.60cm , Height: 3.50cm , Length: 23.90cm
Weight:   1.128kg
ISBN:  

9781587058141

ISBN 10:   1587058146
Pages:   600
Publication Date:   19 November 2009
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Hardback
Publisher's Status:   Out of Print
Availability:   Out of stock  

Table of Contents

Introduction xviii Chapter 1 Troubleshooting Strategy and Implementation 1     Developing a Troubleshooting Strategy 1         Production Versus Nonproduction Outages 1         Step 1: Gathering Data About the Problem 2         Step 2: Identifying the Problem 2         Step 3: Isolating the Problem 3         Step 4: Analyzing the Data Collected About the Problem 7     Summary 9 Chapter 2 Wireless LAN Controllers and Access Points 11     Wireless LAN Controller Platforms 11         Current Production WLCs 12         Previous WLCMs 15         Functionality Differences Between WLCs 17         WLC Hardware and Software Requirements 19     Lightweight AP Models 20         Cisco Aironet APs 20         Airespace APs 25         AP 1000 Series Functionality Differences 26         AP 1000 Series Limitations 26     Lightweight Compared to Traditional Autonomous APs 28         Scalability 28         RRM 29         Self-Healing Mechanism 30         WLC Features 30         Central Management 32     Summary 35 Chapter 3 Introduction to LWAPP 37     Defining LWAPP 37         Quick Protocol Overview 38     LWAPP Advantages 41         Management 42         Scalability 42         Security 43         Mobility 43     LWAPP Mechanics 44         Discovery Process 45         Join Process 55         Image Process 56         Config State 56         Run State 57     Dissecting the Discovery Response 58         Manually Dissecting the Discovery Response 59     Summary 61 Chapter 4 The CAPWAP Protocol 63     Overview of CAPWAP 64         Differences from LWAPP 65     CAPWAP Session Establishment/AP Joining Process 67         Discovery Process 70         DTLS Session Establishment 71         Join/Config/Run 81         Troubleshooting CAPWAP Session Establishment/AP Discovery and Join 90     CAPWAP Communication: Control and Data Encryption 98     CAPWAP Communication: Sequence Numbers and Retransmissions 100     CAPWAP Fragmentation and Path MTU Discovery 101         CAPWAP-Control Packets Fragmentation 101         CAPWAP-Data Packets Fragmentation 101         CAPWAP—MTU DISCOVERY and TCP-MSS Adjustment 102     802.11 Bindings and Payloads 103         CAPWAP-Data Binding and Payloads 103         CAPWAP-Control Binding and Payloads 104         LWAPP and CAPWAP Vendor-Specific Payloads 105     Summary 105 Chapter 5 Network Design Considerations 107     Controller Placement 107         Access Layer Deployments 108         Distribution Layer Deployments 109         Service Block Deployments 109         WAN Considerations 110     AP Placement 110         Dense AP Deployment Considerations 112         802.11n 114         Location Design Considerations 116     Summary 119 Chapter 6 Understanding the Troubleshooting Tools 121     Troubleshooting on the WLC 121         Debugging 121         Advanced Debugging 126     mping and eping 131     Message Log 132     Trap Log 133     Statistics 135         Controller Statistics 135         AP Statistics 135     RADIUS Server Statistics 137         Port Statistics 137         Mobility Statistics 138         Packet Captures 139     WLC Config Analyzer 140     Software Bug Toolkit 141     Summary 142 Chapter 7 Deploying and Configuring the Wireless LAN Controller 143     Connecting the WLC to the Switch 144         Multiple AP-Manager Support 145     LAG 148         Layer 2 and Layer 3 LWAPP Transport Modes of Operation 151         LWAPP Layer 3 Transport Mode 153         Interfaces on the WLC 156     DHCP Proxy Vs. DHCP Bridging 159         DHCP Proxy Mode 160         DHCP Bridging Mode 163     Overview and Configuration 163         Configure the Switch for the WLC 169     Troubleshooting WLC Issues 171     Summary 176 Chapter 8 Access Point Registration 177     AP Discovery and Join Process 177     Troubleshooting Network Connectivity and AP Registration 181         Verifying VLAN Configuration 181         Verifying IP Addressing Information 182     Understanding the AP Discovery and AP Join Process 183     Troubleshooting the AP Discovery and AP Join Process 191         WLC Config Analyzer 197         AP Debugs 198         Debug Template 198     Summary 199 Chapter 9 Mobility 201     Client Roaming/Mobility Events 202         Intra-Controller Roaming 202         Inter-Controller Roaming 202         Inter-Subnet Roaming/Layer 3 Mobility Events 202         Auto-Anchor Mobility 206     AP Groups 207         Troubleshooting AP Groups 208     Mobility Groups 210     Mobility Messaging 212         Mobility Message Types 212         Mobility Role of the Controller to the Client 213         Mobility Handoff Types 214         Mobility Packet Format 221         Error Recovery 223         Mobility Messaging Enhancements in 5.0 224     Configuring Mobility Groups 224         Configuring Auto-Anchoring 226         Determining Controllers to Add to a Mobility Group 228         Secure Mobility 228     Troubleshooting Mobility 229         PMKID Caching 238         AP Mobility 241         Primary, Secondary, and Tertiary Controllers 241         AP Load Balancing 243         AP Failover 244         Troubleshooting AP Mobility 245     Summary 247 Chapter 10 Troubleshooting Client-Related Issues 249     General Client Information 249     Client Association Packet Flow 250     Client Utilities and Logging 255     AP Debugs and Show Commands 258     Wireless and Wired Sniffer Traces 261     Debug Client 262     Debug Client Variations 263     Client Connection 265     Controller Processes 265         PEM 266         APF 268         802.1x Authentication (Dot1x) 270     Debug Client Analysis 270     Troubleshooting Examples 285         Wrong Client Cipher Configuration 285         Wrong Preshared Key 287         Incorrect User Credentials with EAP 289     Summary 291 Chapter 11 Wireless Voice 293     Prerequisites for Voice Deployments 293     Phone Features 295         Supported Protocols, Specifications, and Certifications 295         Security 296         Coexistence 297     QoS 297         Latency, Jitter, and Loss 298         Correct Packet Marking 298         Upstream and Downstream QoS 302         Wi-Fi Multimedia 303         TSPEC 304     Configuration 305         Controller 305         Switch Ports 311         WLAN Profile on the Phone 312     Troubleshooting 792x Voice Quality Issues 313         Basic Troubleshooting/Connectivity 313         Choppy/Lost Audio 316         One-Way Voice 319         Network Busy 321         Poor Audio When Roaming 323         Multicast Applications Fail 324         Enabling Trace Logs on the 792x 329         Troubleshooting and Monitoring Tools 337         WCS 338         Packet Capture Software 340         Spectrum Analysis Tools 341     SpectraLink and Vocera Deployments 342         SpectraLink 342         Vocera Deployments 344     Summary 347 Chapter 12 Radio Resource Management 349     How RRM Works 349         RF Grouping 351         Dynamic Channel Assignment 357         TPC 358         Coverage Hole Detection 359         Enhancements to RRM 360     Configuring RRM 362         Dynamic Channel Assignment 363         Transmit Power Control (TPC) 365         Coverage 367         Profiles and Monitor Intervals 368         Overriding Global RRM 369     Troubleshooting RRM 371         SNMP Traps 371         show Commands 373         Debugs 378     Summary 389 Chapter 13 H-REAP 391     H-REAP Versus REAP 392         Split MAC Versus Local MAC Architecture 392     H-REAP Modes of Operation 394         Central Versus Local Switching 395         H-REAP States of Operation 397         H-REAP Wireless Security Support 398     Configuring H-REAP 398         Controller Discovery 398         Configuring the WLAN 402         Configuring the AP 404         Configuring the Local Switch 405         H-REAP Guidelines and Limitations 408     H-REAP Enhancements 410         Backup RADIUS Server 410         H-REAP Groups 411         Local Authentication 412     Troubleshooting H-REAP 412         show Commands 414         debug Commands 422     Summary 430 Chapter 14 Guest Networking 431     Web Authentication 431         Web Authentication Policies 432         Web Authentication Types 435         Web Authentication Process 436         Troubleshooting Basic Web Authentication 440         RADIUS and LDAP Authentication with Web Auth 447         Guest User Accounts 451         Custom Web Auth Splash Pages 452         Global Override 453         Browser Security Warning 454     Centralized Traffic Flow with Guest Access 458         Auto-Anchor/Guest Tunneling 458         Configuring Auto-Anchor 460         Troubleshooting Guest Tunneling 461         Wired Guest Access 467         Troubleshooting Wired Guest Access 470     Summary 471 Chapter 15 Mesh 473     Mesh Code Releases 474     Mesh Deployments 474     How Mesh Works 476         Mesh Bootup and Join Process 477         Configuring Mesh 480     Ethernet Bridging 483     Troubleshooting Mesh 488         AP Join Problems 488         RF Issues 491         show Commands 492         Remote Telnet and AP Debugs 495         Ethernet Bridging Troubleshooting 497     Summary 502 Appendix A Debugging Commands 503     WLC Debugs 503         Existing Debugs in Software Version 5.0 and Earlier 503         Debugs Introduced in Software Version 5.1 518         Debugs Introduced in Software Version 6.0 520         Debug Packet Logging 523     AP Debugs 526 Appendix B LWAPP and CAPWAP Payloads 535     LWAPP and CAPWAP Message Payloads 544 TOC, 9781587058141, 10/19/09  

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Author Information

Mark L. Gress, CCIE 25539, is an escalation engineer at the Cisco Systems Technical Assistance Center (TAC) in Research Triangle Park, North Carolina, where he has worked since 2005. He has been troubleshooting complex wireless networks since the birth of the Cisco Wireless LAN Controller (WLC) as a TAC engineer, a technical lead for the Enterprise Wireless team, and now as an escalation engineer supporting the complete Cisco line of wireless products. Mark has diagnosed problems in some of the largest Cisco wireless deployments and has provided training for TAC teams around the world. He has also contributed to numerous design guides, application notes, and white papers. As one of the highest contributors of identifying and assisting in defect resolution, his work has led to increases in overall product quality and stability. Mark graduated summa cum laude with a bachelors of science in both computer information systems and business management from North Carolina Wesleyan College. For more than ten years, Mark has been professionally involved in the networking industry.   Lee Johnson is currently a wireless specialist on the RTP Wireless TAC team at Cisco. He has been troubleshooting wireless networks, including both autonomous and controllerbased infrastructures, since 2006. Lee troubleshoots complex wireless issues in Cisco customer networks around the world. He has been dispatched to customer sites to address critical accounts and represented Cisco at Networkers. He also provides training and documentation for fellow Cisco engineers in both wireless and nonwireless TAC groups. Lee works closely with the wireless development group at Cisco to improve product quality and the customer experience with the WLC. He holds a bachelor of science degree in biology from the University of North Carolina at Chapel Hill.    

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