® 2009 Xirrus, Inc. All Rights Reserved
The Wi-Fi Device Explosion - What’s Your Plan?The Wi-Fi Device Explosion - What’s Your Plan?
Keith Mackinen (CWNA)Principal Sales [email protected]
Keith Mackinen (CWNA)Principal Sales [email protected]
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
AGENDAAGENDA
•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
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Traditional (Tethered) InstructionTraditional (Tethered) Instruction
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Untethered InstructionUntethered Instruction
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Key Trends Impacting Wi-Fi GrowthKey Trends Impacting Wi-Fi GrowthNumber of Wi-Fi Devices
Capacity/Density supersedes coverage
Higher Performance for applications
Number of Wi-Fi Devices
Capacity/Density supersedes coverage
Higher Performance for applications
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Wi-Fi Growth – The TabletWi-Fi Growth – The Tablet
6
® 2009 Xirrus, Inc. All Rights Reserved
The Evolution of Wi-FiAnd taking advantage of lessons And taking advantage of lessons learnedlearned
The Evolution of Wi-FiAnd taking advantage of lessons And taking advantage of lessons learnedlearned
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Learning from Cellular Phone Network Evolution Learning from Cellular Phone Network Evolution
From the first commercial networks of the 1980’s to today…
Coverage expanded significantly
Capacity increased significantly
User densities exploded
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Learning from Cellular Phone Network Evolution Learning from Cellular Phone Network Evolution
From the first commercial networks of the 1980’s 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
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
History: StandardsStandardsHistory: StandardsStandards
802.11a (1999)Operates in 5GHz spectrumData Rates: Up to 54MbpsAvailable channels: 24 (1.3 Gig)
802.11b (1999)Operates in 2.4GHz spectrumData Rates: 11MbpsAvailable channels: 3 (33 Mbps)
802.11g (2003)Operates in 2.4GHz spectrumData Rates: 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54MbpsBackward 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 spectrumData Rates: Up to 54MbpsAvailable channels: 24 (1.3 Gig)
802.11b (1999)Operates in 2.4GHz spectrumData Rates: 11MbpsAvailable channels: 3 (33 Mbps)
802.11g (2003)Operates in 2.4GHz spectrumData Rates: 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54MbpsBackward 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
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
5 GHz Needed to Scale5 GHz Needed to Scale
2.4 GHz (Channels 1, 6, 11)2.4 GHz (Channels 1, 6, 11)
5 GHz ( 24 Channels)5 GHz ( 24 Channels)
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
2.4 GHz Interference2.4 GHz Interference
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
More 2.4GHz InterferenceMore 2.4GHz Interference
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
2.4GHz to 5GHz ratio2.4GHz to 5GHz ratio
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Evolution: Performance/CapacityPerformance/CapacityEvolution: Performance/CapacityPerformance/CapacityCapacity 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
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Evolution: Performance/CapacityPerformance/CapacityEvolution: Performance/CapacityPerformance/Capacity
Problem:More devices…
More content… More demand…
Solution: More Radios…
More Bandwidth… More Satisfied Users…
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Evolution: ArchitectureArchitectureEvolution: ArchitectureArchitecture
Distributed = HIGHER PERFORMANCEPacket Processing at edgeControl plane at edgePolicy and security enforcement at edge
Filters traffic before wired networkEncryption processing at edgePacket switching at edge, like Ethernet
Greater scalability, each device adds resourcesCentral management
Central Controller + Thin APs Packet Processing at coreControl plane at corePolicy and security enforcement at coreEncryption processing at coreBack End Network BottlenecksCentral processing increase latency and jitter Central management - Single point of failure
Centralized Processing Distributed Processing
® 2009 Xirrus, Inc. All Rights Reserved
Examples: Existing CustomersExamples: Existing Customers
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Forsyth County 100% Wireless - BYOT
Serves over 37000 students Laptops, Desktops, etc…
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 countyBandwidth - relatively similar or equal to wired network
BenefitsUn-tethered instruction – no more duct tape cables or stationary labsSufficient Bandwidth and performance for thousands of clients
Savings Used 585 Arrays which meant required 585 cables pulls not 2500Time to installation average 1 day per school for arrays
40 Schools - initiated BYOT this year....
Requirements Support Thousands of simultaneous users across the countyBandwidth - relatively similar or equal to wired network
BenefitsUn-tethered instruction – no more duct tape cables or stationary labsSufficient Bandwidth and performance for thousands of clients
Savings Used 585 Arrays which meant required 585 cables pulls not 2500Time to installation average 1 day per school for arrays
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
BYOT GrowthBYOT Growth
20
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Greater Atlanta Christian School Serves over 3,000 clients
Greater Atlanta Christian School Serves over 3,000 clients
All teachers have MACs - The HS/MS student’s 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 student’s 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…
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Meridian High SchoolMeridian High School
22
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Real Life Difference – 1:1 Traditional APReal Life Difference – 1:1 Traditional AP
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Scaleable Over TimeScaleable Over Time
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
High Performance Wi-Fi: Best PracticesBest PracticesHigh Performance Wi-Fi: Best PracticesBest PracticesRecommendations
Demand Active ‘live’ surveysPredictive 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 performanceDRIVERS, DRIVERS, DRIVERSAt least buy 802.11a/g/n adapters A/B/G/N recommended Fold in new 802.11n clients (5GHz) for greater bandwidth
Wired Network InfrastructurePull at least one Gigabit Ethernet connection to each AP Confirm PoE capabilities to support 11n requirements
Wireless Network – Have a plan to expandBuy infrastructure gear that is upgradeable - no 2X2 Antennae they limit future growthPerform switching at the edge, avoid ‘tromboning’
RecommendationsDemand 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 performanceDRIVERS, DRIVERS, DRIVERSAt least buy 802.11a/g/n adapters A/B/G/N recommended Fold in new 802.11n clients (5GHz) for greater bandwidth
Wired Network InfrastructurePull at least one Gigabit Ethernet connection to each AP Confirm PoE capabilities to support 11n requirements
Wireless Network – Have a plan to expandBuy infrastructure gear that is upgradeable - no 2X2 Antennae they limit future growthPerform switching at the edge, avoid ‘tromboning’
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
High Performance Wi-Fi: Best PracticesBest PracticesHigh Performance Wi-Fi: Best PracticesBest Practices
Clients – The Weakest Link
iPads and Netbooks-72 doesn’t work anymore
Station Location and Identification Identify iPods vs. iPadsLocate 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
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
High Performance Wi-Fi: Best PracticesBest PracticesHigh Performance Wi-Fi: Best PracticesBest 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
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
High Performance Wi-Fi: Best PracticesBest PracticesHigh Performance Wi-Fi: Best PracticesBest 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
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
High Performance Wi-Fi: Best PracticesBest PracticesHigh Performance Wi-Fi: Best PracticesBest Practices
2.4 GHz (Channels 1, 6, 11)2.4 GHz (Channels 1, 6, 11)
5 GHz ( 24 Channels)5 GHz ( 24 Channels)
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Wi-Fi: Scaling to 1:1Scaling to 1:1Wi-Fi: Scaling to 1:1Scaling to 1:1
Traditional Wi-Fi:Traditional Wi-Fi:
Most existing Wi-Fi was designed as only an ‘Overlay’ (Coverage not Bandwidth)1-to-1 initiatives hampered by today’s wireless infrastructures – its coming!Online video training strains legacy wireless bandwidth - Multicast When in doubt TEST THE SOLUTION!
High Performance Wi-FiHigh Performance Wi-FiHigh Performance Wi-Fi is designed to replace not augment wired networkEliminates costly and restrictive computer labs – move the labs anywhere!Enables the use of PODs (Personally Owned Devices) in the classroomInstruction is no longer limited by building, classroom or IT schedules
Traditional Wi-Fi:Traditional Wi-Fi:
Most existing Wi-Fi was designed as only an ‘Overlay’ (Coverage not Bandwidth)1-to-1 initiatives hampered by today’s wireless infrastructures – its coming!Online video training strains legacy wireless bandwidth - Multicast When in doubt TEST THE SOLUTION!
High Performance Wi-FiHigh Performance Wi-FiHigh Performance Wi-Fi is designed to replace not augment wired networkEliminates costly and restrictive computer labs – move the labs anywhere!Enables the use of PODs (Personally Owned Devices) in the classroomInstruction is no longer limited by building, classroom or IT schedules
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 EncryptionSingle Cable Deployment Dual Gigabit Ethernet uplinksIntegrated Spectrum AnalyzerIntegrated Wi-Fi Threat sensor
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 EncryptionSingle Cable Deployment Dual Gigabit Ethernet uplinksIntegrated Spectrum AnalyzerIntegrated Wi-Fi Threat sensor
Xirrus Wi-Fi Array OverviewXirrus Wi-Fi Array Overview
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Wi-Fi PostersDeployment ExamplesDesign GuidesDeployment GuideTechnical Resources
White PapersFAQsApplication NotesAnd More
Wi-Fi GadgetsRequest a FREE Site Survey
Wi-Fi PostersDeployment ExamplesDesign GuidesDeployment GuideTechnical Resources
White PapersFAQsApplication NotesAnd More
Wi-Fi GadgetsRequest a FREE Site Survey
Additional Wi-Fi Resources: WWW.XIRRUS.COMAdditional Wi-Fi Resources: WWW.XIRRUS.COM
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Who are your students connecting to?Who are your students connecting to?
® 2009 Xirrus, Inc. All Rights Reserved
Questions???Questions???
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Xirrus: What’s New in 6.0What’s New in 6.0Xirrus: What’s New in 6.0What’s New in 6.0
Live Heat Maps: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: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.
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Xirrus: What’s New in 6.0What’s New in 6.0Xirrus: What’s New in 6.0What’s New in 6.0
Location Identification: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 :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: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 :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.
Confidential Information
® 2010 Xirrus, Inc. All Rights Reserved
Xirrus: What’s New in 6.0What’s New in 6.0Xirrus: What’s New in 6.0What’s New in 6.0
Network Assurance: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 mappingSSID – Per-Radio mapping
WPR CustomizationWPR Customization
Network Assurance: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 mappingSSID – Per-Radio mapping
WPR CustomizationWPR Customization
Top Related