1. ® 2009 Xirrus, Inc. All Rights Reserved The Wi-Fi Device Explosion - Whats Your Plan? Keith Mackinen (CWNA) Principal Sales Engineer Keith.mackinen@xirrus.com Keith Mackinen (CWNA) Principal Sales Engineer Keith.mackinen@xirrus.com

2. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved AGENDA Device Explosion Evolution of Wi-Fi Designing for Performance Case Studies Best Practices Device Explosion Evolution of Wi-Fi Designing for Performance Case Studies Best Practices

3. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Traditional (Tethered) Instruction

4. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Untethered Instruction

5. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Key Trends Impacting Wi-Fi Growth Number of Wi-Fi Devices Capacity/Density supersedes coverage Higher Performance for applications

6. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Wi-Fi Growth – The Tablet 6

7. ® 2009 Xirrus, Inc. All Rights Reserved And taking advantage of lessons learned The Evolution of Wi-Fi And taking advantage of lessons learned

8. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Learning from Cellular Phone Network Evolution From the first commercial networks of the 1980s to today… Coverage expanded significantly Capacity increased significantly User densities exploded

9. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Learning from Cellular Phone Network Evolution From the first commercial networks of the 1980s to today… Coverage expanded significantly Capacity increased significantly User densities exploded To handle the growth… Changed from omni to directional antennas Increased # radios per base station Utilized additional channels of spectrum

10. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Standards History: Standards 802.11a (1999) Operates in 5GHz spectrum Data Rates: Up to 54Mbps Available channels: 24 (1.3 Gig) 802.11b (1999) Operates in 2.4GHz spectrum Data Rates: 11Mbps Available channels: 3 (33 Mbps) 802.11g (2003) Operates in 2.4GHz spectrum Data Rates: 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54Mbps Backward compatible with 802.11b Available channels: 3 (162 Mbps) 802.11n (2009) Operates in 2.4GHz and 5GHz spectrum (backward compatible with 802.11a/b/g) Data Rates: Up to 450Mbps today (future = 600Mbps and more!) Available channels: 27 802.11a (1999) Operates in 5GHz spectrum Data Rates: Up to 54Mbps Available channels: 24 (1.3 Gig) 802.11b (1999) Operates in 2.4GHz spectrum Data Rates: 11Mbps Available channels: 3 (33 Mbps) 802.11g (2003) Operates in 2.4GHz spectrum Data Rates: 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54Mbps Backward compatible with 802.11b Available channels: 3 (162 Mbps) 802.11n (2009) Operates in 2.4GHz and 5GHz spectrum (backward compatible with 802.11a/b/g) Data Rates: Up to 450Mbps today (future = 600Mbps and more!) Available channels: 27

11. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved 5 GHz Needed to Scale 2.4 GHz (Channels 1, 6, 11) 5 GHz ( 24 Channels)

12. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved 2.4 GHz Interference

13. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved More 2.4GHz Interference

14. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved 2.4GHz to 5GHz ratio

15. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Performance/Capacity Evolution: Performance/Capacity Capacity is based on Radios & Segmentation (just ask the cell guys) Available Radios = Available Bandwidth First Generation APs offered a single radio Traditional APs typically offer two (2.4 & 5 GHz) Arrays offer up to 16 radios Coverage/Cell Segmentation Greater capacity, density and less interference Improved RF management, coverage shaping, security Fewer devices to cover same area Capacity is based on Radios & Segmentation (just ask the cell guys) Available Radios = Available Bandwidth First Generation APs offered a single radio Traditional APs typically offer two (2.4 & 5 GHz) Arrays offer up to 16 radios Coverage/Cell Segmentation Greater capacity, density and less interference Improved RF management, coverage shaping, security Fewer devices to cover same area

16. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Performance/Capacity Evolution: Performance/Capacity Problem: More devices… More content… More demand… Solution: More Radios… More Bandwidth… More Satisfied Users…

17. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Architecture Evolution: Architecture Distributed = HIGHER PERFORMANCE Packet Processing at edge Control plane at edge Policy and security enforcement at edge Filters traffic before wired network Encryption processing at edge Packet switching at edge, like Ethernet Greater scalability, each device adds resources Central management Central Controller + Thin APs Packet Processing at core Control plane at core Policy and security enforcement at core Encryption processing at core Back End Network Bottlenecks Central processing increase latency and jitter Central management - Single point of failure Centralized ProcessingDistributed Processing

18. ® 2009 Xirrus, Inc. All Rights Reserved Examples: Existing Customers

19. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Forsyth County 100% Wireless - BYOT Serves over 37000 students Laptops, Desktops, etc… 40 Schools - initiated BYOT this year.... Requirements Support Thousands of simultaneous users across the county Bandwidth - relatively similar or equal to wired network Benefits Un-tethered instruction – no more duct tape cables or stationary labs Sufficient Bandwidth and performance for thousands of clients Savings Used 585 Arrays which meant required 585 cables pulls not 2500 Time to installation average 1 day per school for arrays 40 Schools - initiated BYOT this year.... Requirements Support Thousands of simultaneous users across the county Bandwidth - relatively similar or equal to wired network Benefits Un-tethered instruction – no more duct tape cables or stationary labs Sufficient Bandwidth and performance for thousands of clients Savings Used 585 Arrays which meant required 585 cables pulls not 2500 Time to installation average 1 day per school for arrays

20. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved BYOT Growth 20

21. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Greater Atlanta Christian School Serves over 3,000 clients All teachers have MACs - The HS/MS students computer ratio is 2:1. Requirements Support hundreds of simultaneous connections in a small area Utilize the 5GHz channels Wireless support for wireless MACs Benefits Superior range and coverage with 75% fewer devices and cable pulls Bandwidth and performance for thousands of students, faculty, and staff Saving vs. Traditional APs Used 26 Arrays instead of 120+ APs (huge reduction in devices and cable pulls) Time to installation – Xirrus took 2 days to physically install – with some tweaking… All teachers have MACs - The HS/MS students computer ratio is 2:1. Requirements Support hundreds of simultaneous connections in a small area Utilize the 5GHz channels Wireless support for wireless MACs Benefits Superior range and coverage with 75% fewer devices and cable pulls Bandwidth and performance for thousands of students, faculty, and staff Saving vs. Traditional APs Used 26 Arrays instead of 120+ APs (huge reduction in devices and cable pulls) Time to installation – Xirrus took 2 days to physically install – with some tweaking…

22. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Meridian High School 22

23. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Real Life Difference – 1:1 Traditional AP

24. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Scaleable Over Time

25. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Best Practices High Performance Wi-Fi: Best Practices Recommendations Demand Active live surveys Predictive surveys are only a best guess – cannot tell what is in the walls Live surveys guarantee performance Transition to the 5GHz spectrum (802.11a minimum, 802.11n ASAP) to achieve: 8X increased capacity (300meg going to 600…), Significantly reduced interference – no more lunchtime microwave interference Client Devices Move away from 802.11b, it seriously degrades 802.11g/n performance DRIVERS, DRIVERS, DRIVERS At least buy 802.11a/g/n adapters A/B/G/N recommended Fold in new 802.11n clients (5GHz) for greater bandwidth Wired Network Infrastructure Pull at least one Gigabit Ethernet connection to each AP Confirm PoE capabilities to support 11n requirements Wireless Network – Have a plan to expand Buy infrastructure gear that is upgradeable - no 2X2 Antennae they limit future growth Perform switching at the edge, avoid tromboning Recommendations Demand Active live surveys Predictive surveys are only a best guess – cannot tell what is in the walls Live surveys guarantee performance Transition to the 5GHz spectrum (802.11a minimum, 802.11n ASAP) to achieve: 8X increased capacity (300meg going to 600…), Significantly reduced interference – no more lunchtime microwave interference Client Devices Move away from 802.11b, it seriously degrades 802.11g/n performance DRIVERS, DRIVERS, DRIVERS At least buy 802.11a/g/n adapters A/B/G/N recommended Fold in new 802.11n clients (5GHz) for greater bandwidth Wired Network Infrastructure Pull at least one Gigabit Ethernet connection to each AP Confirm PoE capabilities to support 11n requirements Wireless Network – Have a plan to expand Buy infrastructure gear that is upgradeable - no 2X2 Antennae they limit future growth Perform switching at the edge, avoid tromboning

26. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Best Practices High Performance Wi-Fi: Best Practices Clients – The Weakest Link iPads and Netbooks -72 doesnt work anymore Station Location and Identification Identify iPods vs. iPads Locate iPods and iPads to within 10 Ft. (single array) Assist the client in roaming – hand off Load Balancing Equalize the number of clients across multiple radios

27. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Best Practices High Performance Wi-Fi: Best Practices DUAL BAND!!! Buy A/B/G/N – not Just B/G/N Reminder – 802.11N is in 2.4 and 5GHz DUAL BAND!!! Buy A/B/G/N – not Just B/G/N Reminder – 802.11N is in 2.4 and 5GHz

28. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Best Practices High Performance Wi-Fi: Best Practices Planning for Growth – Be Careful… DO THE MATH! Currently 300M (bonded) Wireless through put (450 best case) Best case TCP is 130M - most around 60 to 90M 130M/150 to 300 Users = Misery Planning for Growth – Be Careful… DO THE MATH! Currently 300M (bonded) Wireless through put (450 best case) Best case TCP is 130M - most around 60 to 90M 130M/150 to 300 Users = Misery

29. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Best Practices High Performance Wi-Fi: Best Practices 2.4 GHz (Channels 1, 6, 11) 5 GHz ( 24 Channels)

30. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Scaling to 1:1 Wi-Fi: Scaling to 1:1 Traditional Wi-Fi: Most existing Wi-Fi was designed as only an Overlay (Coverage not Bandwidth) 1-to-1 initiatives hampered by todays wireless infrastructures – its coming! Online video training strains legacy wireless bandwidth - Multicast When in doubt TEST THE SOLUTION! High Performance Wi-Fi High Performance Wi-Fi is designed to replace not augment wired network Eliminates costly and restrictive computer labs – move the labs anywhere! Enables the use of PODs (Personally Owned Devices) in the classroom Instruction is no longer limited by building, classroom or IT schedules Traditional Wi-Fi: Most existing Wi-Fi was designed as only an Overlay (Coverage not Bandwidth) 1-to-1 initiatives hampered by todays wireless infrastructures – its coming! Online video training strains legacy wireless bandwidth - Multicast When in doubt TEST THE SOLUTION! High Performance Wi-Fi High Performance Wi-Fi is designed to replace not augment wired network Eliminates costly and restrictive computer labs – move the labs anywhere! Enables the use of PODs (Personally Owned Devices) in the classroom Instruction is no longer limited by building, classroom or IT schedules

31. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Superior Range, Coverage and Capacity Up to 16 Radio Interfaces 802.11a/b/g + 802.11n (Switchable) Integrated Antennas (not screw on or flip down) Modular Radios Integrated Controller Line-Rate Encryption Single Cable Deployment Dual Gigabit Ethernet uplinks Integrated Spectrum Analyzer Integrated Wi-Fi Threat sensor Xirrus Wi-Fi Array Overview

32. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Wi-Fi Posters Deployment Examples Design Guides Deployment Guide Technical Resources White Papers FAQs Application Notes And More Wi-Fi Gadgets Request a FREE Site Survey Additional Wi-Fi Resources: WWW.XIRRUS.COM

33. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Who are your students connecting to?

34. ® 2009 Xirrus, Inc. All Rights Reserved Questions???

35. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Whats New in 6.0 Xirrus: Whats New in 6.0 Live Heat Maps: The XMS now provides predictive RF coverage heat maps for Arrays within a network. Network Administrators are able to upload floor plans for each building and place theArrays in their approximate location on each floor plan. Live Heat Maps: The XMS now provides predictive RF coverage heat maps for Arrays within a network. Network Administrators are able to upload floor plans for each building and place theArrays in their approximate location on each floor plan.

36. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Whats New in 6.0 Xirrus: Whats New in 6.0 Location Identification: XMS now provides the approximate location of wireless stations within the network. Signal strength triangulation between Arrays is used by the XMS to predict location. In an appropriately designed network (Array placement), XMS can identify the location within 5 meters 75% of the time and within 10 meters 90% of the time Multicast Optimization : Xirrus is not INMP aware and now has the ability to convert multicast traffic to Unicast to improve performance in a wireless environment. Location Identification: XMS now provides the approximate location of wireless stations within the network. Signal strength triangulation between Arrays is used by the XMS to predict location. In an appropriately designed network (Array placement), XMS can identify the location within 5 meters 75% of the time and within 10 meters 90% of the time Multicast Optimization : Xirrus is not INMP aware and now has the ability to convert multicast traffic to Unicast to improve performance in a wireless environment.

37. Confidential Information ® 2010 Xirrus, Inc. All Rights Reserved Whats New in 6.0 Xirrus: Whats New in 6.0 Network Assurance: Network Assurance identifies key network components such as the Gateway and DNS server and validates that these resources remain available. If the Array cannot communicate with these resources, it will notify the network manager that there may be a problem with the network. SSID – Per-Radio mapping WPR Customization Network Assurance: Network Assurance identifies key network components such as the Gateway and DNS server and validates that these resources remain available. If the Array cannot communicate with these resources, it will notify the network manager that there may be a problem with the network. SSID – Per-Radio mapping WPR Customization