Cambium Networks XN4 Users Guide
October 28, 2009
Wi-Fi Array
™
XN16, XN12, XN8, XN4
XS16, XS12, XS8, XS4
XS-3900, XS-3700, XS-3500
All rights reserved. This document may not be reproduced or
disclosed in whole or in part by any means without the written
consent of Xirrus, Inc.
Part Number: 800-0006-001
(Revision W)
Trademarks
is a registered trademark of Xirrus, Inc. All other trademarks and brand
names are marks of their respective holders.
Please see Legal Notices, Warnings, Compliance Statements, and Warranty and
License Agreements in “Appendix F: Notices” on page 433.
Xirrus, Inc.
2101 Corporate Center Drive
Thousand Oaks, CA 91320
USA
Tel: 1.805.262.1600
1.800.947.7871 Toll Free in the US
Fax: 1.866.462.3980
www.xirrus.com
Wi-Fi Array
Table of Contents
List of Figures.................................................................................... xiii
Introduction ......................................................................................... 1
The Xirrus Family of Products ............................................................................... 2
Nomenclature .................................................................................................... 4
About this User’s Guide .......................................................................................... 4
Organization ...................................................................................................... 4
Notes and Cautions .......................................................................................... 6
Screen Images .................................................................................................... 6
Your User’s Guide as a PDF Document ........................................................ 6
Hyperlinks ......................................................................................................... 7
Window or Page? .............................................................................................. 7
Why Choose the Xirrus Wi-Fi Array? ................................................................... 7
Wi-Fi Array Product Overview ............................................................................. 9
Enterprise Class Security ................................................................................. 9
Wi-Fi Array Product Family ......................................................................... 10
XN Family of Arrays ............................................................................... 10
XS Family of Arrays ................................................................................ 11
Deployment Flexibility .................................................................................. 12
Power over Gigabit Ethernet (PoGE) (Optional) ................................ 13
Enterprise Class Management ...................................................................... 14
Key Features and Benefits ..................................................................................... 16
High Capacity and High Performance ........................................................ 16
Extended Coverage ......................................................................................... 17
Flexible Coverage Schemes .................................................................... 18
Non-Overlapping Channels .......................................................................... 18
Secure Wireless Access .................................................................................. 18
Applications Enablement .............................................................................. 19
SDMA Optimization ...................................................................................... 19
Fast Roaming ................................................................................................... 19
Easy Deployment ............................................................................................ 19
Product Specifications—XN16, XN12, and XN8 ............................................... 20
Product Specifications—XN4 ............................................................................... 27
Table of Contents i
Wi-Fi Array
Product Specifications—XS16/XS-3900, XS12, and
XS8/XS-3700 ........................................................................................................... 34
Product Specifications—XS4/XS-3500 ............................................................... 40
Installing the Wi-Fi Array ................................................................. 45
Installation Prerequisites ...................................................................................... 45
Optional Network Components ................................................................... 47
Client Requirements ....................................................................................... 47
Planning Your Installation .................................................................................... 48
General Deployment Considerations .......................................................... 48
Coverage and Capacity Planning ................................................................. 50
Placement .................................................................................................. 50
RF Patterns ................................................................................................ 51
Capacity and Cell Sizes ........................................................................... 52
Fine Tuning Cell Sizes ............................................................................. 53
Roaming Considerations ........................................................................ 54
Allocating Channels ................................................................................ 54
Deployment Examples ............................................................................ 57
IEEE 802.11n Deployment Considerations ................................................. 59
MIMO (Multiple-In Multiple-Out) ........................................................ 60
Multiple Data Streams—Spatial Multiplexing .................................... 62
Channel Bonding ..................................................................................... 63
Improved MAC Throughput ................................................................. 64
Short Guard Interval ............................................................................... 64
Obtaining Higher Data Rates ................................................................. 65
802.11n Capacity ...................................................................................... 66
Failover Planning ............................................................................................ 67
Port Failover Protection .......................................................................... 67
Switch Failover Protection ..................................................................... 68
Power Planning ............................................................................................... 69
AC Power .................................................................................................. 69
Power over Gigabit Ethernet ................................................................. 69
Security Planning ............................................................................................ 70
Wireless Encryption ................................................................................ 70
Authentication ......................................................................................... 70
Meeting PCI DSS Standards ................................................................... 71
Meeting FIPS Standards ......................................................................... 71
ii Table of Contents
Wi-Fi Array
Port Requirements .......................................................................................... 72
Network Management Planning .................................................................. 75
WDS Planning ................................................................................................. 76
Common Deployment Options .................................................................... 79
Installation Workflow ........................................................................................... 80
Unpacking the Wi-Fi Array .................................................................................. 81
Installing Your Wi-Fi Array .................................................................................. 83
Choosing a Location ....................................................................................... 83
Wiring Considerations ............................................................................ 84
Mounting the Array on a Ceiling ................................................................. 86
Attaching the T-Bar Clips to the Template .......................................... 86
Secure the T-Bar Clips to the Ceiling Support Grid ........................... 87
Installing the Mounting Plate ................................................................ 88
Connecting the Cables—AC Option ..................................................... 89
Connecting the Cables—PoGE Option ................................................ 90
Attaching the Array to the Mounting Plate ......................................... 92
Securing the Array ................................................................................... 94
Dismounting the Array ........................................................................... 95
Mounting Array on a Wall (All models except 4-port Arrays) ................ 96
Kit Contents (Wall Mount Assembly) .................................................. 96
Tools Required ......................................................................................... 96
Mark the Wall Position ........................................................................... 97
Install the SNAPTOGGLE™ Toggle Bolts ........................................... 98
Attach the Mounting Plate to the Wall Mounting Bracket ................ 99
Attach the Wall Mounting Bracket/Plate Assembly to the Wall ..... 99
Mount the Array .................................................................................... 100
Mounting the Wi-Fi Array on a Wall (XS4 and XS-3500) ....................... 101
Kit Contents (Wall Mount Assembly) ................................................ 101
Tools Required ....................................................................................... 101
Mark the Wall Position ......................................................................... 102
Install the SNAPTOGGLE™ Toggle Bolts ......................................... 102
Attach the Mounting Plate to the Wall Mounting Bracket .............. 104
Attach the Wall Mounting Bracket/Plate Assembly to the Wall ... 105
Mount the Array .................................................................................... 106
Removing the Array .............................................................................. 107
Powering Up the Wi-Fi Array ............................................................................ 107
Array LED Operating Sequences ............................................................... 108
Table of Contents iii
Wi-Fi Array
LED Boot Sequence ............................................................................... 108
LED Operation when Array is Running ............................................ 109
Establishing Communication with the Array .................................................. 110
Using the Serial Port ..................................................................................... 110
Using the Ethernet Ports .............................................................................. 110
Logging In ...................................................................................................... 111
Performing the Express Setup Procedure ......................................................... 112
Procedure for Performing an Express Setup ............................................ 113
The Web Management Interface ................................................ 119
An Overview ........................................................................................................ 120
Structure of the WMI ........................................................................................... 121
User Interface ....................................................................................................... 123
Utility Buttons ........................................................................................ 124
Logging In ............................................................................................................. 126
Applying Configuration Changes ..................................................................... 126
Viewing Status on the Wi-Fi Array............................................... 127
Array Status Windows ........................................................................................ 127
Array Summary ............................................................................................ 128
Content of the Array Summary Window .......................................... 128
Array Information ........................................................................................ 131
Array Configuration ..................................................................................... 132
Admin History .............................................................................................. 133
Network Status Windows ................................................................................... 133
Network Map ................................................................................................ 134
Content of the Network Map Window .............................................. 134
Spanning Tree Status .................................................................................... 136
Routing Table ................................................................................................ 138
ARP Table ...................................................................................................... 138
DHCP Leases ................................................................................................. 139
Connection Tracking/NAT ......................................................................... 140
CDP Neighbors ............................................................................................. 141
RF Monitor Windows .......................................................................................... 142
IAPs ................................................................................................................. 143
Spectrum Analyzer ...................................................................................... 144
Intrusion Detection ...................................................................................... 148
iv Table of Contents
Wi-Fi Array
Station Status Windows ...................................................................................... 150
Stations ........................................................................................................... 151
Location Map ................................................................................................. 152
RSSI ................................................................................................................. 158
Signal-to-Noise Ratio (SNR) ........................................................................ 160
Noise Floor ..................................................................................................... 162
Max by IAP .................................................................................................... 164
Statistics Windows ............................................................................................... 165
IAP Statistics Summary ................................................................................ 165
Per-IAP Statistics ........................................................................................... 166
Network Statistics ......................................................................................... 168
VLAN Statistics ............................................................................................. 169
WDS Statistics ................................................................................................ 170
Filter Statistics ............................................................................................... 171
Station Statistics ............................................................................................ 171
Per-Station Statistics ..................................................................................... 172
System Log Window ........................................................................................... 173
Configuring the Wi-Fi Array .......................................................... 175
Express Setup ........................................................................................................ 176
Network ................................................................................................................. 182
Network Interfaces ...................................................................................... 183
Network Interface Ports ........................................................................ 184
DNS Settings .................................................................................................. 190
CDP Settings .................................................................................................. 191
Services .................................................................................................................. 193
Time Settings (NTP) ..................................................................................... 194
NetFlow .......................................................................................................... 196
System Log ..................................................................................................... 197
SNMP .............................................................................................................. 200
DHCP Server ................................................................................................. 203
VLANs ................................................................................................................... 205
Understanding Virtual Tunnels .......................................................... 205
VLAN Management ..................................................................................... 207
Security .................................................................................................................. 209
Understanding Security ........................................................................ 210
Certificates and Connecting Securely to the WMI ............................ 213
Table of Contents v
Wi-Fi Array
Using the Array’s Default Certificate ................................................. 213
Using an External Certificate Authority ............................................. 214
Admin Management .................................................................................... 215
Admin RADIUS ............................................................................................ 216
About Creating Admin Accounts on the RADIUS Server .............. 217
Management Control ................................................................................... 219
Access Control List ....................................................................................... 223
Global Settings .............................................................................................. 225
External Radius ............................................................................................. 228
Internal Radius .............................................................................................. 231
Rogue Control List ........................................................................................ 233
SSIDs ...................................................................................................................... 235
Understanding SSIDs ............................................................................ 236
Understanding QoS Priority on the Wi-Fi Array .............................. 237
SSID Management ........................................................................................ 240
SSID List (top of page) .......................................................................... 240
SSID Limits ............................................................................................. 243
Web Page Redirect Configuration Settings ........................................ 244
Groups ................................................................................................................... 247
Understanding Groups ......................................................................... 247
Using Groups ......................................................................................... 248
Group Management ..................................................................................... 249
Group Limits .......................................................................................... 251
IAPs ........................................................................................................................ 253
Understanding Fast Roaming .............................................................. 254
IAP Settings ................................................................................................... 255
Global Settings (IAP) ................................................................................... 260
Beacon Configuration ........................................................................... 262
Station Management ............................................................................. 262
Advanced Traffic Optimization .......................................................... 263
Global Settings .11a ...................................................................................... 267
Global Settings .11bg .................................................................................... 269
Global Settings .11n ...................................................................................... 273
Advanced RF Settings .................................................................................. 275
About Standby Mode ............................................................................ 275
About Blocking Rogue APs .................................................................. 276
RF Intrusion Detection .......................................................................... 277
vi Table of Contents
Wi-Fi Array
RF Resilience .......................................................................................... 278
RF Power & Sensitivity ......................................................................... 279
RF Spectrum Management ................................................................... 280
LED Settings .................................................................................................. 283
WDS ....................................................................................................................... 285
About Configuring WDS Links ........................................................... 285
WDS Client Links .......................................................................................... 287
Filters ..................................................................................................................... 289
Filter Lists ...................................................................................................... 290
Filter Management ....................................................................................... 291
Using Tools on the Wi-Fi Array..................................................... 295
System Tools ......................................................................................................... 296
System ..................................................................................................... 297
Configuration ......................................................................................... 298
Diagnostics ............................................................................................. 299
Web Page Redirect ................................................................................. 300
Tools ........................................................................................................ 301
Progress and Status Frames ................................................................. 303
CLI ......................................................................................................................... 303
Logout .................................................................................................................... 305
The Command Line Interface...................................................... 307
Establishing a Secure Shell (SSH) Connection ................................................. 307
Getting Started with the CLI .............................................................................. 309
Inputting Commands ................................................................................... 309
Getting Help .................................................................................................. 309
Top Level Commands ......................................................................................... 311
Root Command Prompt ............................................................................... 311
configure Commands ................................................................................... 312
show Commands .......................................................................................... 315
statistics Commands ..................................................................................... 318
Configuration Commands .................................................................................. 320
acl .................................................................................................................... 320
admin .............................................................................................................. 321
cdp ................................................................................................................... 322
clear ................................................................................................................. 323
Table of Contents vii
Wi-Fi Array
contact-info .................................................................................................... 324
date-time ........................................................................................................ 325
dhcp-server .................................................................................................... 326
dns ................................................................................................................... 327
file .................................................................................................................... 328
filter ................................................................................................................. 331
fips ................................................................................................................... 333
group .............................................................................................................. 334
hostname ........................................................................................................ 334
https ................................................................................................................ 335
interface .......................................................................................................... 336
license ............................................................................................................. 337
load ................................................................................................................. 337
location ........................................................................................................... 338
management .................................................................................................. 338
more ................................................................................................................ 338
netflow ............................................................................................................ 339
no ..................................................................................................................... 340
pci-audit ......................................................................................................... 342
quit .................................................................................................................. 343
radius-server .................................................................................................. 343
reboot .............................................................................................................. 344
reset ................................................................................................................. 344
run-tests .......................................................................................................... 345
security ........................................................................................................... 347
snmp ............................................................................................................... 348
ssh .................................................................................................................... 348
ssid .................................................................................................................. 350
standby ........................................................................................................... 350
syslog .............................................................................................................. 351
telnet ............................................................................................................... 353
uptime ............................................................................................................. 353
vlan .................................................................................................................. 354
Sample Configuration Tasks .............................................................................. 355
Configuring a Simple Open Global SSID .................................................. 356
Configuring a Global SSID using WPA-PEAP ......................................... 357
Configuring an SSID-Specific SSID using WPA-PEAP ........................... 358
viii Table of Contents
Wi-Fi Array
Enabling Global IAPs ................................................................................... 359
Disabling Global IAPs .................................................................................. 360
Enabling a Specific IAP ................................................................................ 361
Disabling a Specific IAP ............................................................................... 362
Setting Cell Size Auto-Configuration for All IAPs .................................. 363
Setting the Cell Size for All IAPs ................................................................ 364
Setting the Cell Size for a Specific IAP ....................................................... 365
Configuring VLANs on an Open SSID ...................................................... 366
Configuring Radio Assurance Mode (Loopback Tests) .......................... 367
Appendices..................................................................................... 369
Appendix A: Servicing the Wi-Fi Array ............................................................. 371
Removing the Access Panel ................................................................................ 373
Reinstalling the Access Panel ............................................................................. 376
Replacing the FLASH Memory Module ........................................................... 378
Replacing the Main System Memory ................................................................ 380
Replacing the Integrated Access Point Radio Module ................................... 382
Replacing the Power Supply Module ............................................................... 385
Appendix B: Quick Reference Guide ............................................................... 387
Factory Default Settings ...................................................................................... 387
Host Name ..................................................................................................... 387
Network Interfaces ....................................................................................... 387
Serial ........................................................................................................ 387
Gigabit 1 and Gigabit 2 ......................................................................... 388
Fast Ethernet ........................................................................................... 388
Integrated Access Points (IAPs) .................................................................. 389
Server Settings ............................................................................................... 390
NTP .......................................................................................................... 390
Syslog ...................................................................................................... 390
SNMP ...................................................................................................... 390
DHCP .............................................................................................................. 391
Default SSID .................................................................................................. 391
Security .......................................................................................................... 392
Global Settings - Encryption ............................................................... 392
External RADIUS (Global) .................................................................. 392
Internal RADIUS .................................................................................... 393
Table of Contents ix
Wi-Fi Array
Administrator Account and Password ...................................................... 394
Management .................................................................................................. 394
Keyboard Shortcuts ............................................................................................. 394
Appendix C: Technical Support ........................................................................ 397
General Hints and Tips ....................................................................................... 397
Frequently Asked Questions .............................................................................. 398
Multiple SSIDs ............................................................................................... 398
Security ........................................................................................................... 400
VLAN Support .............................................................................................. 403
Array Monitor and Radio Assurance Capabilities .......................................... 406
Enabling Monitoring on the Array ..................................................... 406
How Monitoring Works ............................................................................... 406
Radio Assurance ........................................................................................... 407
Radio Assurance Options ..................................................................... 408
Upgrading the Array via CLI ............................................................................. 409
Sample Output for the Upgrade Procedure: ............................................. 410
Power over Gigabit Ethernet Compatibility Matrix ....................................... 414
Determining If an XS-3700 or XS-3900 is Modified for PoGE ......... 416
Contact Information ............................................................................................ 417
Appendix D: Implementing PCI DSS ............................................................... 419
Payment Card Industry Data Security Standard Overview .......................... 419
PCI DSS and Wireless .......................................................................................... 420
The Xirrus Array PCI Compliance Configuration .......................................... 421
The pci-audit Command ..................................................................................... 422
Additional Resources .......................................................................................... 423
Appendix E: Implementing FIPS Security ....................................................... 425
Appendix F: Notices ........................................................................................... 433
Notices ................................................................................................................... 433
EU Directive 1999/5/EC Compliance Information ........................................ 436
Safety Warnings ................................................................................................... 443
Translated Safety Warnings ............................................................................... 444
Software Warranty and License Agreement .................................................... 445
Hardware Warranty Agreement ....................................................................... 452
x Table of Contents
Wi-Fi Array
Glossary of Terms.......................................................................... 455
Index................................................................................................ 467
Table of Contents xi
Wi-Fi Array
xii Table of Contents
Wi-Fi Array
List of Figures
Figure 1. Xirrus Arrays............................................................................................... 2
Figure 2. The Xirrus Management System .............................................................. 3
Figure 3. Wi-Fi Array (XN16).................................................................................... 9
Figure 4. Wireless Coverage Patterns .................................................................... 12
Figure 5. XP8 - Power over Ethernet Usage .......................................................... 13
Figure 6. WMI: Array Status.................................................................................... 14
Figure 7. Layout of IAPs (XN16)............................................................................. 16
Figure 8. Naming of IAPs (XS16)............................................................................ 17
Figure 9. Coverage Schemes ................................................................................... 18
Figure 10. Wall Thickness Considerations .............................................................. 49
Figure 11. Unit Placement.......................................................................................... 50
Figure 12. Full (Normal) Coverage........................................................................... 51
Figure 13. Adjusting RF Patterns.............................................................................. 51
Figure 14. Custom Coverage ..................................................................................... 52
Figure 15. Connection Rate vs. Distance.................................................................. 52
Figure 16. Transmit Power......................................................................................... 53
Figure 17. Overlapping Cells..................................................................................... 54
Figure 18. Allocating Channels Manually............................................................... 56
Figure 19. Deployment Scenario (54 Mbps)—Per Sector ...................................... 57
Figure 20. Deployment Scenario (36 Mbps)—Per Sector ...................................... 57
Figure 21. Deployment Scenario (18 Mbps)—Per Sector ...................................... 58
Figure 22. Classic 802.11 Signal Transmission........................................................ 60
Figure 23. MIMO Signal Processing......................................................................... 61
Figure 24. Spatial Multiplexing................................................................................. 62
Figure 25. Channel Bonding...................................................................................... 63
Figure 26. MAC Throughput Improvements.......................................................... 64
Figure 27. Computing 802.11n Data Rates .............................................................. 65
Figure 28. 802.11n Increases Capacity...................................................................... 66
Figure 29. Port Failover Protection........................................................................... 67
Figure 30. Switch Failover Protection ...................................................................... 68
Figure 31. Port Requirements for XMS .................................................................... 72
Figure 32. WDS Link................................................................................................... 76
Figure 33. A Multiple Hop WDS Connection ......................................................... 77
Figure 34. WDS Failover Protection ......................................................................... 77
List of Figures xiii
Wi-Fi Array
Figure 35. Installation Workflow .............................................................................. 80
Figure 36. Array Placement ....................................................................................... 83
Figure 37. Attaching the T-Bar Clips to the Template ........................................... 86
Figure 38. Attaching the T-Bar Clips to the Ceiling Grid...................................... 87
Figure 39. Installing the Mounting Plate ................................................................. 88
Figure 40. Connecting the Cables ............................................................................. 89
Figure 41. Connecting the Cables (PoGE—XS8/XS12/XS16) .............................. 90
Figure 42. Connecting the Cable (PoGE—XS4) ...................................................... 91
Figure 43. Attaching the Unit (XS4 shown)............................................................. 92
Figure 44. Attaching the Unit (XS-3900) .................................................................. 93
Figure 45. Securing the Array.................................................................................... 94
Figure 46. IAP Positions (XS16 shown).................................................................... 95
Figure 47. Wall Mount—Marking the Holes........................................................... 97
Figure 48. Installing the Toggle Bolts....................................................................... 98
Figure 49. Attaching the Wall Mounting Plate ....................................................... 99
Figure 50. Mounting the Array on a Wall ............................................................. 100
Figure 51. Wall Mount—Marking the Holes......................................................... 102
Figure 52. Installing the Toggle Bolts..................................................................... 103
Figure 53. Attaching the Array Mounting Plate................................................... 104
Figure 54. Attaching the Wall Mounting Bracket to the Wall ............................ 105
Figure 55. Mounting the Array on a Wall ............................................................. 106
Figure 56. LED Locations (XS-3900) ....................................................................... 107
Figure 57. Network Interface Ports......................................................................... 110
Figure 58. Express Setup.......................................................................................... 112
Figure 59. LEDs are Switched On........................................................................... 117
Figure 60. Web Management Interface.................................................................. 120
Figure 61. WMI: Frames........................................................................................... 123
Figure 62. WMI: Utility Buttons.............................................................................. 124
Figure 63. Feedback Form........................................................................................ 125
Figure 64. Logging In to the Wi-Fi Array.............................................................. 126
Figure 65. Array Summary ...................................................................................... 128
Figure 66. Disabled IAP (Partial View).................................................................. 129
Figure 67. IAP Cells .................................................................................................. 130
Figure 68. Array Information .................................................................................. 131
Figure 69. Show Configuration ............................................................................... 132
Figure 70. Admin Login History............................................................................. 133
Figure 71. Network Map.......................................................................................... 134
xiv List of Figures
Wi-Fi Array
Figure 72. Spanning Tree Status.............................................................................. 137
Figure 73. Routing Table.......................................................................................... 138
Figure 74. ARP Table ................................................................................................ 138
Figure 75. DHCP Leases........................................................................................... 139
Figure 76. Connection Tracking.............................................................................. 140
Figure 77. CDP Neighbors....................................................................................... 141
Figure 78. RF Monitor—IAPs.................................................................................. 143
Figure 79. RF Spectrum Analyzer........................................................................... 145
Figure 80. Intrusion Detection/Rogue AP List..................................................... 148
Figure 81. Stations..................................................................................................... 151
Figure 82. Location Map........................................................................................... 153
Figure 83. Controls for Location Map.................................................................... 154
Figure 84. Minimizing stations................................................................................ 155
Figure 85. Setting Array location on a Custom Image......................................... 157
Figure 86. Station RSSI Values ................................................................................ 158
Figure 87. Station RSSI Values—Colorized Graphical View .............................. 159
Figure 88. Station Signal-to-Noise Ratio Values................................................... 160
Figure 89. Station SNR Values—Colorized Graphical View .............................. 161
Figure 90. Station Noise Floor Values.................................................................... 162
Figure 91. Station Noise Floor Values—Colorized Graphical View.................. 163
Figure 92. Max by IAP.............................................................................................. 164
Figure 93. IAP Statistics Summary Page................................................................ 166
Figure 94. Individual IAP Statistics Page (for IAP abg(n)1) ............................... 167
Figure 95. Network Statistics................................................................................... 168
Figure 96. VLAN Statistics....................................................................................... 169
Figure 97. WDS Statistics ......................................................................................... 170
Figure 98. Filter Statistics ......................................................................................... 171
Figure 99. Station Statistics ...................................................................................... 171
Figure 100. Individual Station Statistics Page......................................................... 172
Figure 101. System Log ............................................................................................. 173
Figure 102. WMI: Express Setup............................................................................... 176
Figure 103. LEDs are Switched On........................................................................... 181
Figure 104. Network Interfaces................................................................................. 182
Figure 105. Network Settings .................................................................................... 183
Figure 106. Network Interface Ports......................................................................... 184
Figure 107. Port Modes (a-b) ..................................................................................... 186
Figure 108. Port Modes (c-d) ..................................................................................... 187
List of Figures xv
Wi-Fi Array
Figure 109. Port Modes (e-f) ...................................................................................... 188
Figure 110. DNS Settings............................................................................................ 190
Figure 111. CDP Settings............................................................................................ 191
Figure 112. Services..................................................................................................... 193
Figure 113. Time Settings (Manual Time)................................................................ 194
Figure 114. Time Settings (NTP Time Enabled)...................................................... 195
Figure 115. NetFlow.................................................................................................... 196
Figure 116. System Log .............................................................................................. 197
Figure 117. SNMP ....................................................................................................... 200
Figure 118. DHCP Management............................................................................... 203
Figure 119. VLANs...................................................................................................... 205
Figure 120. VLAN Management............................................................................... 207
Figure 121. Security..................................................................................................... 209
Figure 122. Import Xirrus Certificate Authority..................................................... 214
Figure 123. Admin Management .............................................................................. 215
Figure 124. Admin RADIUS...................................................................................... 217
Figure 125. Management Control ............................................................................. 219
Figure 126. Access Control List................................................................................. 223
Figure 127. Global Settings (Security) ...................................................................... 225
Figure 128. External RADIUS Server ....................................................................... 228
Figure 129. Internal RADIUS Server ........................................................................ 231
Figure 130. Rogue Control List ................................................................................. 233
Figure 131. SSIDs......................................................................................................... 235
Figure 132. Four Traffic Classes................................................................................ 237
Figure 133. SSID Management.................................................................................. 240
Figure 134. WPR Internal Splash Page Fields (SSID Management)..................... 245
Figure 135. Groups...................................................................................................... 247
Figure 136. Group Management ............................................................................... 249
Figure 137. IAPs........................................................................................................... 253
Figure 138. IAP Settings ............................................................................................. 255
Figure 139. Global Settings (IAPs)............................................................................ 260
Figure 140. Global Settings .11a ................................................................................ 267
Figure 141. Global Settings .11bg.............................................................................. 269
Figure 142. Global Settings .11n................................................................................ 273
Figure 143. Advanced RF Settings............................................................................ 275
Figure 144. LED Settings............................................................................................ 283
Figure 145. WDS.......................................................................................................... 285
xvi List of Figures
Wi-Fi Array
Figure 146. .Configuring a WDS Link...................................................................... 286
Figure 147. WDS Client Links ................................................................................... 287
Figure 148. Filters........................................................................................................ 289
Figure 149. Filter Lists ................................................................................................ 290
Figure 150. Filter Management ................................................................................. 291
Figure 151. System Tools............................................................................................ 296
Figure 152. Saving the Diagnostic Log..................................................................... 299
Figure 153. Managing WPR Splash/Login page files............................................ 300
Figure 154. System Command (Ping)....................................................................... 301
Figure 155. Radius Ping Output................................................................................ 302
Figure 156. CLI Window............................................................................................ 304
Figure 157. Login Window ........................................................................................ 305
Figure 158. Logging In................................................................................................ 308
Figure 159. Help Window.......................................................................................... 309
Figure 160. Full Help .................................................................................................. 310
Figure 161. Partial Help.............................................................................................. 310
Figure 162. Configuring a Simple Open Global SSID............................................ 356
Figure 163. Configuring a Global SSID using WPA-PEAP................................... 357
Figure 164. Configuring an SSID-Specific SSID using WPA-PEAP..................... 358
Figure 165. Enabling Global IAPs............................................................................. 359
Figure 166. Disabling Global IAPs............................................................................ 360
Figure 167. Enabling a Specific IAP.......................................................................... 361
Figure 168. Disabling a Specific IAP......................................................................... 362
Figure 169. Setting the Cell Size for All IAPs.......................................................... 363
Figure 170. Setting the Cell Size for All IAPs.......................................................... 364
Figure 171. Setting the Cell Size for a Specific IAP ................................................ 365
Figure 172. Configuring VLANs on an Open SSID................................................ 366
Figure 173. Configuring Radio Assurance Mode (Loopback Testing)................ 368
Figure 174. Disconnecting Power from the Array.................................................. 371
Figure 175. Removing the Access Panel Screws..................................................... 373
Figure 176. Removing the Access Panel .................................................................. 374
Figure 177. Disconnecting the Power Supply and Fan.......................................... 374
Figure 178. Reconnecting the Fan and Power Supply ........................................... 376
Figure 179. Reinstalling the Access Panel................................................................ 376
Figure 180. Removing the FLASH Memory Module............................................. 378
Figure 181. Removing the DIMM Memory Module .............................................. 380
Figure 182. Removing the Chassis Cover Screws................................................... 382
List of Figures xvii
Wi-Fi Array
Figure 183. Removing the Chassis Cover................................................................ 382
Figure 184. Lifting the Integrated Access Point Module....................................... 383
Figure 185. Disconnect the Integrated Access Point Module ............................... 383
Figure 186. Installing a New Access Panel (with Power Supply)........................ 385
Figure 187. XN8/XN12/XN16/XS8/XS12/XS16: Integrated Splitter ................ 416
Figure 188. Determining if XS-37000/3900 is modified ........................................ 416
Figure 189. Sample output of pci-audit command................................................. 423
Figure 190. Applying Three Seals to XS16/XS12/XS8 or XS-3900/XS-3700...... 426
Figure 191. Applying Two Tamper-evident seals to the XS4 or XS-3500 ........... 427
Figure 192. SSID Management Window................................................................. 428
Figure 193. Security/Global Settings Window....................................................... 429
Figure 194. Security/Management Control Window............................................ 430
Figure 195. Services/SNMP Window ...................................................................... 430
Figure 196. IAPs/Global Settings Screen................................................................. 431
xviii List of Figures
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Introduction
These topics introduce the Xirrus Wi-Fi Array, including an overview of its key
features and benefits, and a detailed listing of the product’s physical,
environmental, technology and regulatory specifications.
“The Xirrus Family of Products” on page 2.
“About this User’s Guide” on page 4.
“Why Choose the Xirrus Wi-Fi Array?” on page 7.
“Wi-Fi Array Product Overview” on page 9.
“Key Features and Benefits” on page 16.
“Product Specifications—XN16, XN12, and XN8” on page 20.
“Product Specifications—XN4” on page 27.
“Product Specifications—XS16/XS-3900, XS12, and XS8/XS-3700” on
page 34.
“Product Specifications—XS4/XS-3500” on page 40.
Introduction 1
The Xirrus Family of Products
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Figure 1. Xirrus Arrays
The Xirrus family of products includes the following:
Wi-Fi Array
The XS Series of Xirrus Wi-Fi Arrays (XS16 / XS12 / XS8 / XS4)
XS Arrays integrate multiple Integrated Access Points—radios with highgain directional antennas for increased range and coverage. The Array
also incorporates an onboard multi-gigabit switch, Wi-Fi controller, and
firewall into a single device, along with a dedicated Wi-Fi threat sensor
and an embedded spectrum analyzer. The Wi-Fi Array provides more
than enough bandwidth, security, and control to replace switched
Ethernet to the desktop as the primary network connection. The XS16 has
16 IAPs, the XS12 has 12 IAPs, the XS8 has 8 IAPs, and the XS4 has 4 IAPs.
The XN Series of Xirrus Wi-Fi Arrays (XN16 / XN12 / XN8 / XN4)
The newest Xirrus Wi-Fi Arrays add the speed and reach of IEEE 802.11n
technology to the XS series of Arrays. The XN Series of Arrays feature the
capacity and performance needed to replace switched Ethernet to the
desktop. The XN16 has 16 IAPs, the XN12 has 12 IAPs, the XN8 has 8
IAPs, and the XN4 has 4 IAPs.
2 Introduction
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Xirrus Management System (XMS)
XMS is used for managing large Array deployments from a centralized
Web-based interface. The XMS server is available pre-installed on the
Xirrus XM-33xx-CC Management Platform Series, or as a software
package (XA-3300-CC) to be installed on your own server hardware.
Figure 2 illustrates the elements of the Xirrus Management System. Users
start the XMS client simply by entering the URL of the XMS server on a
web browser. The XMS server manages a number of Wi-Fi Arrays via
SNMP.
Figure 2. The Xirrus Management System
If you need detailed information about this product, refer to the XMS
User’s Guide, part number 800-0007-001.
Xirrus Power over Gigabit Ethernet (PoGE)
The PoGE modules eliminate the need for running separate power
cabling. Additionally, an eight port module provides distributed power
to multiple Arrays, facilitating backup power when connected via a UPS.
Introduction 3
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Nomenclature
Throughout this User’s Guide, the Xirrus Wi-Fi Array is also referred to as simply
the Array. In some instances, the terms product and unit are also used. When
discussing specific products from the Xirrus family, the product name is used (for
example, XN16, XS12, or XS-3500). The Wi-Fi Array’s operating system is referred
to as the ArrayOS. The Web Management Interface for browser-based
management of the Array is referred to as WMI.
The XS series of Arrays have two types of radios—the 5 GHz 802.11a radios are
named a1 to a12 (for 16-port models). The 802.11a/b/g radios are named abg1 to
abg4, and they support both 2.4GHz and 5 GHz. The XN series of Arrays also
have two types of radios—the 5 GHz 802.11a/n radios are named an1 through
an12 (for 16-port models). The 802.11a/b/g/n radios are named abgn1 to abgn4,
and they also support both 2.4GHz and 5 GHz. When referring to a port that may
be on either an XN or XS model, the nomenclature abg(n) and a(n) will be used,
e.g., abg(n)2 or a(n)6.
The Xirrus Management System is referred to as XMS. The Power over Gigabit
Ethernet system may be referred to as PoGE.
About this User’s Guide
This User’s Guide provides detailed information and procedures that will enable
wireless network administrators to install, configure and manage the Wi-Fi Array
so that end users can take full advantage of the product’s features and
functionality without technical assistance.
Organization
Topics and procedures are organized by function under the following chapter
headings:
Introduction
Provides a brief introduction to wireless technology, an overview of the
product, including its key features and benefits, and presents the product
specifications.
4 Introduction
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Installing the Wi-Fi Array
Defines prerequisites for deploying and installing the Array and provides
instructions to help you plan and complete a successful installation.
The Web Management Interface
Offers an overview of the product’s embedded Web Management
Interface, including its content and structure. It emphasizes what you
need to do to ensure that any configuration changes you make are
applied, and provides a list of restricted characters. It also includes
instructions for logging in to the Array with your Web browser.
Viewing Status on the Wi-Fi Array
Describes the status and statistics displays available on the Array using
its embedded Web Management Interface.
Configuring the Wi-Fi Array
Contains procedures for configuring the Array using its embedded Web
Management Interface.
Using Tools on the Wi-Fi Array
Contains procedures for using utility tools provided in the Web
Management Interface. It includes procedures for upgrading the system
firmware, uploading and downloading configurations and other files,
using diagnostic tools, and resetting the Array to its factory defaults.
The Command Line Interface
Includes the commands and the command structure used by the Wi-Fi
Array’s Command Line Interface (CLI), and provides a procedure for
establishing a Telnet connection to the Array. This chapter also includes
some sample key configuration tasks using the CLI.
Appendix A: Servicing the Wi-Fi Array
Contains procedures for servicing the Array, including the removal and
reinstallation of major hardware components.
Appendix B: Quick Reference Guide
Contains the product’s factory default settings.
Introduction 5
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Appendix C: Technical Support
Offers guidance to resolve technical issues, including general hints and
tips to enhance your product experience, and a procedure for isolating
problems within an Array-enabled wireless network. Also includes
Frequently Asked Questions (FAQs) and Xirrus contact information.
Appendix D: Implementing PCI DSS
Discusses meeting security standards with the Array, including FIPS and
PCI DSS.
Appendix F: Notices
Contains the legal notices, licensing, and compliance statements for the
Array. Please read this section carefully.
Glossary of Terms
Provides an explanation of terms directly related to Xirrus product
technology, organized alphabetically.
Index
The index is a valuable information search tool. Use the index to locate
specific topics discussed in this User’s Guide. Simply click on any page
number in the index to jump to the referenced topic.
Notes and Cautions
The following symbols are used throughout this User’s Guide:
This symbol is used for general notes that provide useful supplemental
#
!
information.
This symbol is used for cautions. Cautions provide critical information that
may adversely affect the performance of the product.
Screen Images
Some screen images of the Web Management Interface have been modified for
clarity. For example, an image may have been cropped to highlight a specific area
of the screen, and/or sample data may be included in some fields.
Your User’s Guide as a PDF Document
6 Introduction
Wi-Fi Array
This User’s Guide is also made available as a secure PDF (Portable Document
Format) file and can be viewed using the Adobe® Acrobat Reader® product. It
cannot be edited or modified. If you don’t have Acrobat Reader, you can
downloaded it free-of-charge from: http://www.adobe.com.
Hyperlinks
If you click on body text that appears in the color TEAL (with the exception of
headings or notes) the embedded hyperlink within the text will immediately take
you to the referenced destination. All internal and external cross-references,
including page numbers within the List of Figures and the Index, have associated
hyperlinks. After “jumping” to a referenced topic, if you want to return to the
previous page (reference source), simply click on Acrobat’s previous page button.
Window or Page?
Is a window a page, or is a page a window? There seems to be some dispute as to
what the correct term should be. For the sake of consistency, this document uses
the term Window when referring to how the Wi-Fi Array’s Web Management
Interface is displayed on your monitor.
Why Choose the Xirrus Wi-Fi Array?
The deployment of wireless LANs is becoming increasingly common as
businesses strive for greater flexibility in the workplace and the need for
employee mobility rises. The only requirements for an effective wireless
deployment are a power source, a couple of screws, and a little imagination.
Wireless LAN is also fully compatible with standard Ethernet protocols, so
connectivity with existing wired infrastructures is transparent to users—they can
still access and use the same applications and network services that they use
when plugged into the company’s wired LAN infrastructure (it’s only the plug
that no longer exists).
Wireless LAN has come a long way in the past few years and now offers the
performance, reliability and security that Enterprise customers have come to
expect from their networks. The technology is being driven by four major IEEE
standards:
Introduction 7
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802.11a
Operates in the 5 GHz range with a maximum speed of 54 Mbps.
802.11b
Operates in the 2.4 GHz range with a maximum speed of 11 Mbps.
802.11g
Supports a higher transmission speed of 54 Mbps in the 2.4 GHz range
and is backwards compatible with 802.11b.
802.11n
Uses multiple antennas per radio to boost transmission speed as high as
300 Mbps, increasing throughput, range, and maximum number of users.
802.11n is backwards compatible with 802.11a/b/g.
Whether you have just a handful of users or thousands of users, wireless has the
scalability and flexibility to serve your needs.
See Also
Key Features and Benefits
Wi-Fi Array Product Overview
Product Specifications—XN16, XN12, and XN8
Product Specifications—XS4/XS-3500
Product Specifications—XS16/XS-3900, XS12, and XS8/XS-3700
The Xirrus Family of Products
8 Introduction
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