Wireless LAN Array
ii
Table of Contents
Secure Wireless Access .................................................................................. 12
Applications Enablement .............................................................................. 12
SDMA Optimization ...................................................................................... 12
Easy Deployment ............................................................................................ 12
Product Specifications (XS-3900 and XS-3700) .................................................. 13
Product Specifications (XS-3500) ......................................................................... 17
Installing the Xirrus Array................................................................ 21
Installation Prerequisites ...................................................................................... 21
Optional Network Components ................................................................... 23
Client Requirements ....................................................................................... 23
Planning Your Installation .................................................................................... 24
General Deployment Considerations .......................................................... 24
Coverage and Capacity Planning ................................................................. 25
Placement .................................................................................................. 25
RF Patterns ................................................................................................ 26
Calculating Areas .................................................................................... 27
Capacity and Cell Sizes ........................................................................... 28
Sample 802.11a Cells ............................................................................... 29
Fine Tuning Cell Sizes ............................................................................. 30
Roaming Considerations ........................................................................ 30
Allocating Channels ................................................................................ 31
Deployment Examples ............................................................................ 32
Failover Planning ............................................................................................ 33
Port Failover Protection .......................................................................... 33
Switch Failover Protection ..................................................................... 34
Power Planning ............................................................................................... 35
AC Power .................................................................................................. 35
Remote Distributed DC Power .............................................................. 35
Security Planning ............................................................................................ 35
Wireless Encryption ................................................................................ 35
Authentication ......................................................................................... 36
Network Management Planning .................................................................. 37
Deployment Summary ................................................................................... 38
Installation Workflow ........................................................................................... 39
Unpacking the Xirrus Array ................................................................................. 40
Installing Your Xirrus Wireless LAN Array ...................................................... 41
