blc 09: untethered networking = unfettered instruction

Wi-Fi = Untethered Educationntethered EducationWi-Fi = Untethered Educationntethered EducationWi-Fi ‘s Now Ready to Replace Ethernet at the EdgeWi-Fi ‘s Now Ready to Replace Ethernet at the Edge

Paul KerssePaul Kersse

® 2009 Xirrus, Inc. All Rights Reserved

[email protected]@Xirrus.com


Traditional (Tethered) InstructionTraditional (Tethered) Instruction

Confidential Information


Untethered InstructionUntethered Instruction



Key Trends Impacting Wi-Fi in EducationKey Trends Impacting Wi-Fi in Education

Proliferation of Wi-Fi Devices

Higher Performance for bandwidth hungry applicationshungry applications

Capacity/Density supersedesCapacity/Density supersedes coverage


The Evolution of Wi-FiThe Evolution of Wi-Fi

It’s not Residential Class Wi-Fi Anymore!It’s not Residential Class Wi-Fi Anymore!



Evolution: StandardsEvolution: Standards802.11b (1999)

Operates in 2.4GHz spectrumData Rates: 1, 2, 5.5, 11Mbps

802.11b (1999)Operates in 2.4GHz spectrumData Rates: 1, 2, 5.5, 11MbpsAvailable channels: 3 (33 Mbps)

802.11a (1999)Operates in 5GHz spectrum

Available channels: 3 (33 Mbps)

802.11a (1999)Operates in 5GHz spectrumOpe a es 5G spec uData Rates: 6, 9, 12, 18, 24, 36, 48, 54MbpsAvailable channels: 24 (1.3 Gbps)

802 11g (2003)

Ope a es 5G spec uData Rates: 6, 9, 12, 18, 24, 36, 48, 54MbpsAvailable channels: 24 (1.3 Gbps)

802 11g (2003)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

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 Backward compatible with 802.11b Available channels: 3 (162 Mbps)

802.11n (2008/9)Operates in 2.4GHz and 5GHz spectrum (backward compatible with 802.11a/b/g)

Backward compatible with 802.11b Available channels: 3 (162 Mbps)

802.11n (2008/9)Operates in 2.4GHz and 5GHz spectrum (backward compatible with 802.11a/b/g)


p p ( p g)Data Rates: Up to 300Mbps today (600Mbps future)Available channels: 27 (4 Gbps)

p p ( p g)Data Rates: Up to 300Mbps today (600Mbps future)Available channels: 27 (4 Gbps)


Evolution: Performance/CapacityEvolution: Performance/CapacityCapacity is based on Radios & Segmentation (just ask the cell guys)Capacity is based on Radios & Segmentation (just ask the cell guys)Capacity is based on Radios & Segmentation (just ask the cell guys)

Available Radios = Available Bandwidth

Capacity is based on Radios & Segmentation (just ask the cell guys)

Available Radios = Available BandwidthFirst Generation APs offered a single radioToday’s APs typically offer two (2.4 & 5 GHz)Some newer APs offer 3 or 4 radios

First Generation APs offered a single radioToday’s APs typically offer two (2.4 & 5 GHz)Some newer APs offer 3 or 4 radiosSome newer APs offer 3 or 4 radiosXirrus Arrays up to 16

Co erage/Cell Segmentation

Some newer APs offer 3 or 4 radiosXirrus Arrays up to 16

Co erage/Cell SegmentationCoverage/Cell SegmentationGreater capacity, density and less interferenceImproved RF management, coverage shaping, security

Coverage/Cell SegmentationGreater capacity, density and less interferenceImproved RF management, coverage shaping, securityReduces Multipath & Hidden Node issuesFewer devices to cover same areaReduces Multipath & Hidden Node issuesFewer devices to cover same area



Evolution: SecurityEvolution: Security

Required Security FeaturesAuthentication – MAC/ 802.1x/Captive PortalsE ti WEP/TKIP/CCMP

Security EvolutionNo SecurityWEP (E ti /A th ti ti ) Encryption - WEP/TKIP/CCMP

Access Control Lists/FirewallsIDS/IPS/RF Monitoring

WEP (Encryption/Authentication)WFA – Wi-Fi Protected AccessIEEE - Robust Security Network (RSN)IDS/IPS (Overlay – Integrated)


IDS/IPS (Overlay Integrated)Spectrum Analyzer (AdHoc – Integrated 24/7)


Evolution: Reliability/ResiliencyEvolution: Reliability/ResiliencyResidential Class APs (1st generation) – DisposableResidential Class APs (1st generation) – DisposableResidential Class APs (1 generation) – DisposableEnterprise Class APs – More reliable than Ethernet?

N t k R ili M lti l R di

Residential Class APs (1 generation) – DisposableEnterprise Class APs – More reliable than Ethernet?

N t k R ili M lti l R diNetwork Resiliency - Multiple RadiosMultiple Radios/Access Points/Arrays covering the same areaAt least three radios visible, -70dBm signal strength everywhere

Network Resiliency - Multiple RadiosMultiple Radios/Access Points/Arrays covering the same areaAt least three radios visible, -70dBm signal strength everywhere

End User Resiliency – Multiple PathsEthernet clients have single path to network (cables / switches)

End User Resiliency – Multiple PathsEthernet clients have single path to network (cables / switches)

Uplink/Backhaul Connections – Multiple LinksMultiple, load-balanced uplink connectionsM h B kh l M lti l R di

Uplink/Backhaul Connections – Multiple LinksMultiple, load-balanced uplink connectionsM h B kh l M lti l R di Mesh Backhaul: Multiple Radios

SurvivabilityEliminate SPOF Integrate intelligence in each AP

Mesh Backhaul: Multiple Radios

SurvivabilityEliminate SPOF Integrate intelligence in each AP


Eliminate SPOF, Integrate intelligence in each APOverlapping coverage (Radios & Arrays)Auto Cell Size fills in any gaps

Eliminate SPOF, Integrate intelligence in each APOverlapping coverage (Radios & Arrays)Auto Cell Size fills in any gaps


Evolution: ArchitectureEvolution: ArchitectureCentralized Processing Distributed Processing

Distributed = HIGHER PERFORMANCECentral Controller + Thin APs Packet Processing at edgeControl plane at edgePolicy and security enforcement at edge

Packet Processing at coreControl plane at corePolicy and security enforcement at core

Filters traffic before wired networkEncryption processing at edgePacket switching at edge, like Ethernet Greater scalability each device adds resources

Encryption processing at coreBack End Network Bottlenecks

11n will add 6x time the traffic loadCentral processing increase latency and jitter


Greater scalability, each device adds resourcesCentral management

Central processing increase latency and jitter Central management


Evolution: Wi-Fi (vs. Ethernet)Evolution: Wi-Fi (vs. Ethernet)

Today:

Wi-Fi offers over 30+ times the bandwidth of the early ‘hot spot’ technologyWi-Fi is less expensive to deploy than wired EthernetWi-Fi can seamlessly replace Ethernet to the desktop

Only Wi-Fi:

Supports Voice, Video, Data and Mobility services


pp , , yProvides always on access from desk, meeting room, hallway, …Can reduce your IT staffs workload, users move themselves


Wi-Fi Technology – Best PracticesWi-Fi Technology – Best PracticesRecommendationsRecommendationsRecommendations

Demand Active ‘live’ surveysPredictive surveys are only a best guess

RecommendationsDemand Active ‘live’ surveys

Predictive surveys are only a best guess Live surveys guarantee performance

Transition to the 5GHz spectrum (802.11a now, 802.11n next) to achieve:8X increased capacity,

Live surveys guarantee performanceTransition to the 5GHz spectrum (802.11a now, 802.11n next) to achieve:

8X increased capacity, Significantly reduced interference

Client Devices Move away from 802.11b, it seriously degrades 802.11g/n performance

Significantly reduced interferenceClient Devices

Move away from 802.11b, it seriously degrades 802.11g/n performanceAt least buy 802.11a/b/g adapters Fold in new 802.11n clients (5GHz) for greater bandwidth

Wired Network InfrastructureP ll t l t Gi bit Eth t ti t h AP

At least buy 802.11a/b/g adapters Fold in new 802.11n clients (5GHz) for greater bandwidth

Wired Network InfrastructureP ll t l t Gi bit Eth t ti t h AP Pull at least one Gigabit Ethernet connection to each AP Confirm PoE capabilities to support 11n requirements

Wireless NetworkBuy infrastructure gear that is upgradeable

Pull at least one Gigabit Ethernet connection to each AP Confirm PoE capabilities to support 11n requirements

Wireless NetworkBuy infrastructure gear that is upgradeable


Buy infrastructure gear that is upgradeablePerform switching at the edge, avoid ‘tromboningBuy infrastructure gear that is upgradeablePerform switching at the edge, avoid ‘tromboning


High Performance Wi-Fi: Impact on EducationHigh Performance Wi-Fi: Impact on Education

1-to-1 initiatives hampered by today’s wireless infrastructuresOnline video training creating large strain on available wireless bandwidth 1-to-1 initiatives hampered by today’s wireless infrastructuresOnline video training creating large strain on available wireless bandwidth g g gEliminates costly and restrictive computer labsEnables the use of digital libraries

g g gEliminates costly and restrictive computer labsEnables the use of digital librariesCampus-wide Wi-Fi enables unrestricted instruction (Anywhere/Anytime)Enables the use of PODs (Personally Owned Devices) in the classroomP id th i f t t f W b 2 0 d P t P i t ti

Campus-wide Wi-Fi enables unrestricted instruction (Anywhere/Anytime)Enables the use of PODs (Personally Owned Devices) in the classroomP id th i f t t f W b 2 0 d P t P i t tiProvides the infrastructure for Web 2.0 and Peer to Peer instructionInstruction is no longer limited by building, classroom or IT schedulesProvides the infrastructure for Web 2.0 and Peer to Peer instructionInstruction is no longer limited by building, classroom or IT schedules



Wi-Fi Funding: Actually Reduces CostsWi-Fi Funding: Actually Reduces CostsWi Fi deplo ments can act all red ce costs as the add fle ibilit

• Infrastructure Costs- Far fewer cable runs (savings of $100 $300 per cable run)

Wi-Fi deployments can actually reduce costs as they add flexibility.

- Far fewer cable runs (savings of $100-$300 per cable run)- Far fewer switch ports (savings of approx $215/switch port)- Far fewer devices to manage

• Eliminate traditional Moves/Adds/Change costs

• Significantly reduced time to install

• Reduce costs to Adding Remote Network Access- No trenching (parking lots, athletic fields, …)

Avoid disturbing existing structure- Avoid disturbing existing structure - Wi-Fi phones can replace radios (security, maintenance, coaches, ..)

• Allows last minute deployments as well as network portability


p y p y

® 2007 Xirrus, Inc. All Rights Reserved Forsyth County Schools Serve over 35,000 students adding 2,000 new students each year

Forsyth County Schools Serve over 35,000 students adding 2,000 new students each year

All teachers have a notebook computer for online grading, reporting, and email. All computers within the Forsyth County schools are networked and have a high-speed connection to the Internet. The student to computer ratio is 2:1. Students produce live television broadcasts within their schools and work with equipment such as scanners, handheld computing units, and digital cameras Additionally parents can check their child's portfolios assignments grades and discipline online

All teachers have a notebook computer for online grading, reporting, and email. All computers within the Forsyth County schools are networked and have a high-speed connection to the Internet. The student to computer ratio is 2:1. Students produce live television broadcasts within their schools and work with equipment such as scanners, handheld computing units, and digital cameras Additionally parents can check their child's portfolios assignments grades and discipline online and digital cameras. Additionally, parents can check their child's portfolios, assignments, grades and discipline online.

Requirements Support hundreds of simultaneous connections in a given area

and digital cameras. Additionally, parents can check their child's portfolios, assignments, grades and discipline online.

Requirements Support hundreds of simultaneous connections in a given areaSupport hundreds of simultaneous connections in a given areaWireless support for wireless notebooks, handhelds, and phonesWireless bandwidth for voice, video, and data applications

Benefits

Support hundreds of simultaneous connections in a given areaWireless support for wireless notebooks, handhelds, and phonesWireless bandwidth for voice, video, and data applications

BenefitsSuperior range and coverage with 75% fewer devices and cable pullsBandwidth and performance for thousands of students, faculty, and staffAutomated management, RF spectrum, and security tools

Superior range and coverage with 75% fewer devices and cable pullsBandwidth and performance for thousands of students, faculty, and staffAutomated management, RF spectrum, and security tools

Saving vs. Traditional APsSuperior range and coverage with 8:1 reduction in devices and cable pullsNumber of additional access points that did not have to be installed - 3,500 (fewer devices to manage)Number of additional cable runs that did not have to be pulled 3 500 (savings of $700 000 $200/cable run)

Saving vs. Traditional APsSuperior range and coverage with 8:1 reduction in devices and cable pullsNumber of additional access points that did not have to be installed - 3,500 (fewer devices to manage)Number of additional cable runs that did not have to be pulled 3 500 (savings of $700 000 $200/cable run)


Number of additional cable runs that did not have to be pulled - 3,500 (savings of $700,000 - $200/cable run)Number of switch ports that did not have to be consumed - 3,500 (savings $752,500 - $215/switch port)Power savings of 194,804 Kwh/year

Number of additional cable runs that did not have to be pulled - 3,500 (savings of $700,000 - $200/cable run)Number of switch ports that did not have to be consumed - 3,500 (savings $752,500 - $215/switch port)Power savings of 194,804 Kwh/year


Xirrus Wi-Fi Array OverviewXirrus Wi-Fi Array Overview

Superior Range, Coverage and Capacity Up to 16 Radio InterfacesSuperior Range, Coverage and Capacity Up to 16 Radio Interfaces

High GainSectoredAntennas802.11a/b/g + 802.11n

Integrated AntennasModular Radios

802.11a/b/g + 802.11n Integrated AntennasModular Radios

Radio Modules Antennas

Integrated ControllerLine-Rate EncryptionSingle Cable Deployment

Integrated ControllerLine-Rate EncryptionSingle Cable Deployment Single Cable Deployment Dual Gigabit Ethernet uplinksIntegrated Wireless Bridging

Single Cable Deployment Dual Gigabit Ethernet uplinksIntegrated Wireless Bridging

A C t llIntegrated Spectrum AnalyzerIntegrated Wi-Fi Threat sensorIntegrated Spectrum AnalyzerIntegrated Wi-Fi Threat sensor

Array Controller+ Wireless Switch

Eth t S it h R l t!Confidential Information

Ethernet Switch Replacement!


Additional Wi-Fi Resources: WWW.XIRRUS.COMAdditional Wi-Fi Resources: WWW.XIRRUS.COM

Wi-Fi PostersDeployment ExamplesDesign Guides

Wi-Fi PostersDeployment ExamplesDesign GuidesDeployment GuideTechnical Resources

White Papers

Deployment GuideTechnical Resources

White PapersFAQsApplication NotesAnd More

Wi-Fi Gadgets

FAQsApplication NotesAnd More

Wi-Fi GadgetsgRequest a FREE Site Survey

gRequest a FREE Site Survey



Who are your students connecting to?Who are your students connecting to?



Wi-Fi, it’s ready for the Edge todayWi-Fi, it’s ready for the Edge today

Confidential Information Geneva Convention Center

Thank You Thank You Paul Kersse [email protected] xirrus com


www.xirrus.com

Additional SlidesAdditional Slides



Xirrus Arrays: School Deployment ComparrisonXirrus Arrays: School Deployment Comparrison

Fewer devices (avg. 4:1 ratio) saves…EquipmentCablingInstallationManagementManagement

More radios provides…Array Installation

Greater bandwidthHigher user densityEmbedded threat sensorsEmbedded threat sensors

Thi AP I t ll ti

Confidential Information 22

Thin AP Installation


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 explodedUser densities exploded



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 explodedUser densities exploded

To handle the growthTo handle the growth…Changed from omni to directional antennasI d di b t tiIncreased radios per base stationUtilized additional channels of spectrum



Learning from Ethernet LAN EvolutionLearning from Ethernet LAN EvolutionEth tEth tEthernet

10X bandwidth boost every ~5 yearsShared evolved to switched

Ethernet10X bandwidth boost every ~5 yearsShared evolved to switchedIntelligence moved to the edgeIntelligence moved to the edge

L1 Hubs L2 Switching L3 Switching

n Gr

owth


1000Base-T

10Base-T Conn

ectio

n 100Base-T

1990 1995 2000 2005 2010



Learning from Ethernet LAN EvolutionLearning from Ethernet LAN EvolutionEth tEth t Wi FiEthernet

10X bandwidth boost every ~5 yearsShared evolved to switched

Ethernet10X bandwidth boost every ~5 yearsShared evolved to switched

Wi-Fi~5X bandwidth boost every ~5 yearsShared architectures do not scale

Intelligence moved to the edgeIntelligence moved to the edge


Centralized architectures do not scalen

Grow

th


802.11n

1000Base-T

10Base-T Conn

ectio

n 100Base-T

802.11g 802.11a

802.11b

1990 1995 2000 2005 2010

802.11

Shared Switched



Wi-Fi Array = Greater coverageWi-Fi Array = Greater coverage

Access Point Wi-Fi Array

2X More Range

vs.

(100ft range) (200ft range)

4 times more coverage per deviceA P i t li ht b lb4 times more coverage per deviceA P i t li ht b lb

(100ft range) (200ft range)

Access Points = light bulbWi-Fi Arrays = array of high-powered flashlightsAccess Points = light bulbWi-Fi Arrays = array of high-powered flashlights

APs CANNOT ACHIEVE THE SAME COVERAGE


APs CANNOT ACHIEVE THE SAME COVERAGE


Wi-Fi Array = More bandwidth Wi-Fi Array = More bandwidth

Wi-Fi ArrayMbpsMbps

Access Point

vs.

LanesLanes

4 times more bandwidth per deviceM di d l d i f d i 4 times more bandwidth per deviceM di d l d i f d i

APs CANNOT ACHIEVE THE SAME BANDWIDTH

More radios deployed using fewer devices Better performance for voice, video, and dataMore radios deployed using fewer devices Better performance for voice, video, and data


APs CANNOT ACHIEVE THE SAME BANDWIDTH


Wi-Fi Array = Support for more usersWi-Fi Array = Support for more users

Wi-Fi ArrayAccess Point

vs.

4 times more user density per deviceM t d i f d i 4 times more user density per deviceM t d i f d i

APs CANNOT ACHIEVE THE SAME DENSITY

More users supported using fewer devices Better user load balancing across all radiosMore users supported using fewer devices Better user load balancing across all radios


APs CANNOT ACHIEVE THE SAME DENSITY


Xirrus = Free professional servicesXirrus = Free professional services

Competition Xirrus

FREEvs.

FREE

Free site survey & security scanF i t ll ti lid ti & t i iFree installation, validation, & training5-year hardware & 90-day software warranties

Xirrus has the only implementation “guarantee” in the industry


Xirrus has the only implementation “guarantee” in the industry