Cisco Mesh Access Points Kurzanleitung

Cisco Mesh Access Points, Design and Deployment Guide, Release

7.3

First Published: August 28, 2012

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Text Part Number: OL-27593-01

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CONTENTS

Preface

Preface xi

Audience xii

Organization xii

Conventions xii

Related Documentation xv

Obtaining Documentation and Submitting a Service Request xv

CHAPTER 1

Mesh Network Components 1

Mesh Access Points 1

Licensing for Mesh Access Points on a 5500 Series Controller 1

Access Point Roles 2

Network Access 3

Network Segmentation 4

Cisco Indoor Mesh Access Points 4

Cisco Outdoor Mesh Access Points 5

Cisco Aironet 1552 Mesh Access Point 6

Cisco 1522 Mesh Access Point 11

Cisco 1524PS Mesh Access Point 11

Cisco 1524SB Mesh Access Point 12

Ethernet Ports 14

Multiple Power Options 14

Battery Backup Module (Optional) 16

Reset Button 17

Resetting Access Point 18

Monitoring the LED Status 18

Serial Backhaul Access Point Guidelines for the Rest of the World (ROW) 21

Discontinuation of the 116 and 132 Channels from the UNII-2 Extended Band 23

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Frequency Bands 24

Dynamic Frequency Selection 25

Antennas 26

Antenna Configurations for 1552 31

Client Access Certified Antennas (Third-Party Antennas) 34

Maximum Ratio Combining 34

Cisco 1500 Hazardous Location Certification 37

Cisco Wireless LAN Controllers 40

Cisco Prime Infrastructure 40

Architecture 40

Control and Provisioning of Wireless Access Points 40

CAPWAP Discovery on a Mesh Network 40

Dynamic MTU Detection 41

XML Configuration File 41

Adaptive Wireless Path Protocol 42

Traffic Flow 43

Mesh Neighbors, Parents, and Children 44

Criteria to Choose the Best Parent 45

Ease Calculation 45

Parent Decision 45

SNR Smoothing 46

Loop Prevention 46

CHAPTER 2

Mesh Deployment Modes 47

Wireless Mesh Network 47

Wireless Backhaul 47

Universal Access 48

Point-to-Multipoint Wireless Bridging 48

Point-to-Point Wireless Bridging 48

Configuring Mesh Range (CLI) 49

Assumptions for the AP1522 Range Calculator 50

Assumptions for the AP1552 Range Calculator 50

CHAPTER 3

Design Considerations 51

Wireless Mesh Constraints 51

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Wireless Backhaul Data Rate 51

ClientLink Technology 55

Configuring ClientLink (CLI) 56

Commands Related to ClientLink 58

Controller Planning 58

CHAPTER 4

Site Preparation and Planning 61

Site Survey 61

Pre-Survey Checklist 61

Outdoor Site Survey 62

Determining a Line of Sight 62

Weather 63

Fresnel Zone 63

Fresnel Zone Size in Wireless Mesh Deployments 64

Hidden Nodes Interference 65

Functional Routing of Three Radio MAPs 66

Slot Bias Options 66

Disabling Slot Bias 67

Commands Related to Slot Bias 67

Preferred Parent Selection 68

Preferred Parent Selection Criteria 68

Configuring a Preferred Parent 69

Related Commands 69

Co-Channel Interference 70

Wireless Mesh Network Coverage Considerations 71

Cell Planning and Distance 71

Assumptions for the AP1522 Range Calculator 83

Assumptions for the AP1552 Range Calculator 84

Collocating Mesh Access Points 86

Special Considerations for Indoor Mesh Networks 87

Wireless Propagation Characteristics 89

CleanAir 89

CleanAir AP Modes of Operation 90

Pseudo MAC (PMAC) and Merging 91

Event Driven Radio Resource Management and Persistence Device Avoidance 92

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CleanAir Access Point Deployment Recommendations 92

CleanAir Advisor 93

Enabling CleanAir 94

Licensing 94

Wireless Mesh Mobility Groups 94

Multiple Controllers 95

Increasing Mesh Availability 95

Multiple RAPs 96

Indoor Mesh Interoperability with Outdoor Mesh 97

CHAPTER 5

Connecting the Cisco 1500 Series Mesh Access Points to the Network 99

Adding Mesh Access Points to the Mesh Network 100

Adding MAC Addresses of Mesh Access Points to MAC Filter 101

Adding the MAC Address of the Mesh Access Point to the Controller Filter List

(GUI) 101

Adding the MAC Address of the Mesh Access Point to the Controller Filter List

(CLI) 102

Defining Mesh Access Point Role 102

General Notes about MAP and RAP Association With The Controller 102

Configuring the AP Role (GUI) 103

Configuring the AP Role (CLI) 104

Configuring Multiple Controllers Using DHCP 43 and DHCP 60 104

Backup Controllers 105

Configuring Backup Controllers (GUI) 106

Configuring Backup Controllers (CLI) 107

Configuring External Authentication and Authorization Using a RADIUS Server 109

Configuring RADIUS Servers 110

Adding a Username to a RADIUS Server 111

Enabling External Authentication of Mesh Access Points (GUI) 112

Enable External Authentication of Mesh Access Points (CLI) 112

View Security Statistics (CLI) 113

Configuring Global Mesh Parameters 113

Configuring Global Mesh Parameters (GUI) 113

Configuring Global Mesh Parameters (CLI) 116

Viewing Global Mesh Parameter Settings (CLI) 117

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Universal Client Access 118

Configuring Universal Client Access (GUI) 119

Configuring Universal Client Access (CLI) 119

Universal Client Access on Serial Backhaul Access Points 119

Configuring Extended Universal Access (GUI) 120

Configuring Extended Universal Access (CLI) 122

Configuring Extended Universal Access from Cisco Prime Infrastructure 123

Configuring Local Mesh Parameters 124

Configuring Wireless Backhaul Data Rate 124

Configuring Ethernet Bridging 131

Enabling Ethernet Bridging (GUI) 133

Configuring Bridge Group Names 133

Configuring Bridge Group Names (CLI) 134

Verifying Bridge Group Names (GUI) 134

Configuring Public Safety Band Settings 134

Configuring Interoperability with Cisco 3200 136

Enabling AP1522 to Associate with Cisco 3200 (GUI) 138

Enabling 1522 and 1524PS Association with Cisco 3200 (CLI) 138

Configuring Power and Channel Settings 139

Configuring Power and Channel Settings (GUI) 139

Configuring the Channels on the Serial Backhaul (CLI) 140

Configuring Antenna Gain 141

Configuring Antenna Gain (GUI) 141

Configuring Antenna Gain (CLI) 141

Backhaul Channel Deselection on Serial Backhaul Access Point 141

Configuring Backhaul Channel Deselection (GUI) 142

Configuring Backhaul Channel Deselection (CLI) 143

Backhaul Channel Deselection Guidelines 146

Configuring Dynamic Channel Assignment 147

Configuring Advanced Features 149

Using the 2.4-GHz Radio for Backhaul 150

Configuring Ethernet VLAN Tagging 151

Ethernet Port Notes 152

Ethernet VLAN Tagging Guidelines 153

VLAN Registration 154

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Enabling Ethernet VLAN Tagging (GUI) 155

Configuring Ethernet VLAN Tagging (CLI) 156

Viewing Ethernet VLAN Tagging Configuration Details (CLI) 156

Workgroup Bridge Interoperability with Mesh Infrastructure 157

Configuring Workgroup Bridges 158

Guidelines for Configuration 161

Configuration Example 162

WGB Association Check 164

Link Test Result 166

WGB Wired/Wireless Client 167

Client Roaming 168

WGB Roaming Guidelines 168

Configuration Example 169

Troubleshooting Tips 170

Configuring Voice Parameters in Indoor Mesh Networks 170

Call Admission Control 171

Quality of Service and Differentiated Services Code Point Marking 171

Guidelines For Using Voice on the Mesh Network 176

Voice Call Support in a Mesh Network 178

Viewing the Voice Details for Mesh Networks (CLI) 179

Enabling Mesh Multicast Containment for Video 182

Enabling Multicast on the Mesh Network (CLI) 183

IGMP Snooping 183

Locally Significant Certificates for Mesh APs 184

Guidelines for Configuration 184

Differences Between LSCs for Mesh APs and Normal APs 185

Certificate Verification Process in LSC AP 185

Getting Certificates for LSC Feature 185

Configuring a Locally Significant Certificate (CLI) 187

LSC-Related Commands 189

Controller GUI Security Settings 191

Deployment Guidelines 192

CHAPTER 6

Checking the Health of the Network 193

Show Mesh Commands 193

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Viewing General Mesh Network Details 194

Viewing Mesh Access Point Details 195

Viewing Global Mesh Parameter Settings 196

Viewing Bridge Group Settings 197

Viewing VLAN Tagging Settings 197

Viewing DFS Details 197

Viewing Public Safety Setting 198

Viewing Security Settings and Statistics 198

Viewing Mesh Statistics for a Mesh Access Point 199

Viewing Mesh Statistics for a Mesh Access Point (GUI) 199

Viewing Mesh Statistics for an Mesh Access Point (CLI) 202

Viewing Neighbor Statistics for a Mesh Access Point 203

Viewing Neighbor Statistics for a Mesh Access Point (GUI) 203

Viewing the Neighbor Statistics for a Mesh Access Point (CLI) 204

CHAPTER 7

Troubleshooting 207

Installation and Connections 207

Debug Commands 208

Remote Debug Commands 209

AP Console Access 209

Cable Modem Serial Port Access From an AP 210

Configuration 210

Mesh Access Point CLI Commands 212

Mesh Access Point Debug Commands 213

Defining Mesh Access Point Roles 213

Backhaul Algorithm 214

Passive Beaconing (Anti-Stranding) 215

Dynamic Frequency Selection 216

DFS in RAP 216

DFS in MAP 217

Preparation in a DFS Environment 218

Monitoring DFS 219

Frequency Planning 219

Good Signal-to-Noise Ratios 220

Access Point Placement 220

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Check Packet Error Rate 220

Bridge Group Name Misconfiguration 220

Misconfiguration of the Mesh Access Point IP Address 222

Misconfiguration of DHCP 223

Identifying the Node Exclusion Algorithm 223

Throughput Analysis 225

CHAPTER 8

Managing Mesh Access Points with Cisco Prime Infrastructure 227

Adding Campus Maps, Outdoor Areas, and Buildings with Cisco Prime Infrastructure 227

Adding Campus Maps 228

Adding Outdoor Areas 228

Adding a Building to a Campus Map 229

Adding Mesh Access Points to Maps with Cisco Prime Infrastructure 230

Monitoring Mesh Access Points Using Google Earth 232

Launching Google Earth in Cisco Prime Infrastructure 232

Viewing Google Earth Maps 233

Adding Indoor Mesh Access Points to Cisco Prime Infrastructure 236

Managing Mesh Access Points with Cisco Prime Infrastructure 237

Monitoring Mesh Networks Using Maps 237

Monitoring Mesh Link Statistics Using Maps 237

Monitoring Mesh Access Points Using Maps 238

Monitoring Mesh Access Point Neighbors Using Maps 239

Monitoring Mesh Health 240

Viewing Mesh Statistics for a Mesh Access Point 242

Viewing the Mesh Network Hierarchy 247

Using Mesh Filters to Modify Map Display of Maps and Mesh Links 248

Monitoring Workgroup Bridges 250

Multiple VLAN and QoS Support for WGB Wired Clients 251

Workgroup Bridge Guidelines 252

Configuring VLAN and QoS Support (CLI) 252

Workgroup Bridge Output 253

WGB Detail on Controller 255

Troubleshooting Tips 256

Viewing AP Last Reboot Reason 257

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Contents

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