Wireless Access Point
ii
Applications Enablement .............................................................................. 21
Advanced Feature Sets .......................................................................................... 21
Xirrus Advanced RF Performance Manager (RPM) .................................. 21
Xirrus Advanced RF Security Manager (RSM) .......................................... 22
Xirrus Advanced RF Analysis Manager (RAM) ......................................... 23
Xirrus Application Control ............................................................................ 24
About this User’s Guide ........................................................................................ 25
Organization .................................................................................................... 25
Notes and Cautions ........................................................................................ 27
Screen Images .................................................................................................. 27
Product Specifications ........................................................................................... 27
Installing the Wireless AP ............................................................... 29
Installation Prerequisites ...................................................................................... 29
Optional Network Components ................................................................... 31
Client Requirements ....................................................................................... 31
Planning Your Installation .................................................................................... 32
General Deployment Considerations .......................................................... 32
Coverage and Capacity Planning ................................................................. 34
Placement .................................................................................................. 34
RF Patterns ................................................................................................ 35
Capacity and Cell Sizes ........................................................................... 36
Fine Tuning Cell Sizes ............................................................................. 37
Roaming Considerations ........................................................................ 39
Allocating Channels ................................................................................ 39
Other Factors Affecting Throughput .................................................... 41
About IEEE 802.11ac ....................................................................................... 42
Up to Eight Simultaneous Data Streams — Spatial Multiplexing ..... 44
MIMO (Multiple-In Multiple-Out) ........................................................ 44
MU-MIMO (Multi-User Multiple-In Multiple-Out) ........................... 45
Higher Precision in the Physical Layer ................................................ 47
80 MHz and 160 MHz Channel Widths (Bonding) ............................ 48
802.11ac Data Rates ................................................................................. 49
ACExpress™ ............................................................................................ 50
802.11ac Deployment Considerations .......................................................... 50
Failover Planning ............................................................................................ 52
Switch Failover Protection ..................................................................... 54
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