User's Manual

Wireless LAN Array
ii Table of Contents
Applications Enablement .............................................................................. 12
SDMA Optimization ...................................................................................... 12
Easy Deployment ............................................................................................ 12
Product Specifications (XS-3900) ......................................................................... 13
Installing the XS-3900..................................................................... 17
Installation Prerequisites ...................................................................................... 17
Optional Network Components ................................................................... 19
Client Requirements ....................................................................................... 19
Planning Your Installation .................................................................................... 20
General Deployment Considerations .......................................................... 20
Coverage and Capacity Planning ................................................................. 21
Placement .................................................................................................. 21
RF Patterns ................................................................................................ 22
Calculating Areas .................................................................................... 23
Capacity and Cell Sizes ........................................................................... 24
Sample 802.11a Cells ............................................................................... 25
Fine Tuning Cell Sizes ............................................................................. 26
Roaming Considerations ........................................................................ 26
Allocating Channels ................................................................................ 27
Deployment Examples ............................................................................ 28
Failover Planning ............................................................................................ 29
Unit Failover Protection .......................................................................... 29
Port Failover Protection .......................................................................... 30
Switch Failover Protection ..................................................................... 30
Power Planning ............................................................................................... 31
AC Power .................................................................................................. 31
Remote Distributed DC Power .............................................................. 31
Security Planning ............................................................................................ 31
Wireless Encryption ................................................................................ 31
Authentication ......................................................................................... 32
Network Management Planning .................................................................. 33
Deployment Summary ................................................................................... 34
Installation Workflow ........................................................................................... 35
Unpacking the XS-3900 ......................................................................................... 36
Installing the XS-3900 ............................................................................................ 37
Choosing a Location ....................................................................................... 37