User Guide

Wireless Array
List of Figures xi
List of Figures
Figure 1. Xirrus Arrays: XR Series............................................................................ 1
Figure 2. The Xirrus Management System .............................................................. 2
Figure 3. Wireless Array (XR Series)........................................................................ 5
Figure 4. Wireless Coverage Patterns ...................................................................... 9
Figure 5. WMI: Array Status.................................................................................... 11
Figure 6. Layout of IAPs (XR-7630) ........................................................................ 12
Figure 7. Wall Thickness Considerations .............................................................. 25
Figure 8. Unit Placement.......................................................................................... 26
Figure 9. Full (Normal) Coverage........................................................................... 27
Figure 10. Adjusting RF Patterns.............................................................................. 27
Figure 11. Custom Coverage ..................................................................................... 28
Figure 12. Connection Rate vs. Distance ................................................................. 28
Figure 13. Transmit Power......................................................................................... 29
Figure 14. Overlapping Cells..................................................................................... 30
Figure 15. Allocating Channels Manually............................................................... 32
Figure 16. Deployment Scenario (54 Mbps) — Per Sector...................................... 33
Figure 17. Deployment Scenario (36 Mbps) — Per Sector...................................... 33
Figure 18. Deployment Scenario (18 Mbps) — Per Sector...................................... 34
Figure 19. Classic 802.11 Signal Transmission........................................................ 36
Figure 20. MIMO Signal Processing......................................................................... 36
Figure 21. Spatial Multiplexing................................................................................. 37
Figure 22. Channel Bonding...................................................................................... 38
Figure 23. MAC Throughput Improvements.......................................................... 39
Figure 24. Computing 802.11n Data Rates .............................................................. 40
Figure 25. Port Failover Protection........................................................................... 41
Figure 26. Switch Failover Protection ..................................................................... 43
Figure 27. Port Requirements for XMS .................................................................... 47
Figure 28. WDS Link................................................................................................... 52
Figure 29. A Multiple Hop WDS Connection ......................................................... 53
Figure 30. WDS Failover Protection ......................................................................... 53
Figure 31. Installation Workflow.............................................................................. 56
Figure 32. Array Placement ....................................................................................... 58
Figure 33. LED Locations........................................................................................... 62
Figure 34. Network Interface Ports—XR-1000 Series ............................................ 65