Published on July 31, 2009
Wi-Fi = Untethered Education Wi-Fi ‘s Now Ready to Replace Ethernet at the Edge Paul Kersse Paul.kersse@Xirrus.com ® 2009 Xirrus, Inc. All Rights Reserved
® 2007 Xirrus, Inc. All Rights Reserved Traditional (Tethered) Instruction Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Untethered Instruction Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Key Trends Impacting Wi-Fi in Education Proliferation of Wi-Fi Devices Higher Performance for bandwidth hungry applications Capacity/Density supersedes coverage Confidential Information
The Evolution of Wi-Fi It’s not Residential Class Wi-Fi Anymore! ® 2009 Xirrus, Inc. All Rights Reserved
® 2007 Xirrus, Inc. All Rights Reserved Evolution: Standards 802.11b (1999) Operates in 2.4GHz spectrum Data Rates: 1, 2, 5.5, 11Mbps Available channels: 3 (33 Mbps) 802.11a (1999) Ope a es 5G spec u Operates in 5GHz spectrum Data Rates: 6, 9, 12, 18, 24, 36, 48, 54Mbps Available channels: 24 (1.3 Gbps) 802.11g 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 (2008/9) Operates in 2.4GHz and 5GHz spectrum ( p p (backward compatible with 802.11a/b/g) p g) Data Rates: Up to 300Mbps today (600Mbps future) Available channels: 27 (4 Gbps) Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved 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 Today’s APs typically offer two (2.4 & 5 GHz) Some newer APs offer 3 or 4 radios Xirrus Arrays up to 16 Co erage/Cell Coverage/Cell Segmentation Greater capacity, density and less interference Improved RF management, coverage shaping, security Reduces Multipath & Hidden Node issues Fewer devices to cover same area Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Evolution: Security Security Evolution Required Security Features No Security Authentication – MAC/ 802.1x/Captive Portals WEP (E (Encryption/Authentication) ti /A th ti ti ) Encryption - WEP/TKIP/CCMP E ti WFA – Wi-Fi Protected Access Access Control Lists/Firewalls IEEE - Robust Security Network (RSN) IDS/IPS/RF Monitoring IDS/IPS (Overlay – Integrated) Spectrum Analyzer (AdHoc – Integrated 24/7) Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Evolution: Reliability/Resiliency Residential Class APs (1st generation) – Disposable Enterprise Class APs – More reliable than Ethernet? Network R ili N t k Resiliency - M lti l R di Multiple Radios Multiple Radios/Access Points/Arrays covering the same area At least three radios visible, -70dBm signal strength everywhere End User Resiliency – Multiple Paths Ethernet clients have single path to network (cables / switches) Uplink/Backhaul Connections – Multiple Links Multiple, load-balanced uplink connections Mesh Backhaul: Multiple Radios M h B kh l M lti l R di Survivability Eliminate SPOF, Integrate intelligence in each AP SPOF Overlapping coverage (Radios & Arrays) Auto Cell Size fills in any gaps Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Evolution: Architecture Centralized Processing Distributed Processing Central Controller + Thin APs Distributed = HIGHER PERFORMANCE Packet Processing at core Packet Processing at edge Control plane at core Control plane at edge Policy and security enforcement at core Policy and security enforcement at edge Encryption processing at core Filters traffic before wired network Back End Network Bottlenecks Encryption processing at edge 11n will add 6x time the traffic load Packet switching at edge, like Ethernet Central processing increase latency and jitter Greater scalability, each device adds resources scalability Central management Central management Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Evolution: Wi-Fi (vs. Ethernet) Today: Wi-Fi offers over 30+ times the bandwidth of the early ‘hot spot’ technology Wi-Fi is less expensive to deploy than wired Ethernet Wi-Fi can seamlessly replace Ethernet to the desktop Only Wi-Fi: Supports Voice, Video, Data and Mobility services pp , , y Provides always on access from desk, meeting room, hallway, … Can reduce your IT staffs workload, users move themselves Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Wi-Fi Technology – Best Practices Recommendations Demand 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, Significantly reduced interference Client Devices Move away from 802.11b, it seriously degrades 802.11g/n performance At least buy 802.11a/b/g adapters Fold in new 802.11n clients (5GHz) for greater bandwidth Wired Network Infrastructure Pull at lleast one Gi bit Eth P ll t t Gigabit Ethernet connection t each AP t ti to h Confirm PoE capabilities to support 11n requirements Wireless Network Buy infrastructure gear that is upgradeable Perform switching at the edge, avoid ‘tromboning Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved High Performance Wi-Fi: Impact on Education 1-to-1 initiatives hampered by today’s wireless infrastructures Online video training creating large strain on available wireless bandwidth g g g Eliminates costly and restrictive computer labs Enables the use of digital libraries Campus-wide Wi-Fi enables unrestricted instruction (Anywhere/Anytime) Enables the use of PODs (Personally Owned Devices) in the classroom P id th iinfrastructure f W b 2 0 and P t P iinstruction Provides the f t t for Web 2.0 d Peer to Peer t ti Instruction is no longer limited by building, classroom or IT schedules Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Wi-Fi Funding: Actually Reduces Costs Wi-Fi deplo ments Wi Fi deployments can actually reduce costs as the add fle ibilit act all red ce they flexibility. • Infrastructure Costs - Far fewer cable runs (savings of $100 $300 per cable run) $100-$300 - 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 - Wi-Fi phones can replace radios (security, maintenance, coaches, ..) • Allows last minute deployments as well as network portability p y p y Confidential Information
Forsyth County Schools ® 2007 Xirrus, Inc. All Rights Reserved 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 cameras. Additionally portfolios assignments online. Requirements Support hundreds of simultaneous connections in a given area Wireless support for wireless notebooks, handhelds, and phones Wireless bandwidth for voice, video, and data applications Benefits Superior range and coverage with 75% fewer devices and cable pulls Bandwidth and performance for thousands of students, faculty, and staff Automated management, RF spectrum, and security tools Saving vs. Traditional APs Superior range and coverage with 8:1 reduction in devices and cable pulls Number 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) 3,500 $700,000 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 Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Xirrus Wi-Fi Array Overview Superior Range, Coverage and Capacity High Gain Up to 16 Radio Interfaces Sectored Antennas 802.11a/b/g + 802.11n Radio Modules Integrated Antennas Modular Radios Integrated Controller Line-Rate Encryption Single Cable Deployment Dual Gigabit Ethernet uplinks Integrated Wireless Bridging Integrated Spectrum Analyzer Array Controller A C t ll + Wireless Switch Integrated Wi-Fi Threat sensor Ethernet Switch Replacement! Eth t S it h R l t! Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Additional Wi-Fi Resources: WWW.XIRRUS.COM Wi-Fi Posters Deployment Examples Design Guides Deployment Guide Technical Resources White Papers FAQs Application Notes And More Wi-Fi Gadgets g Request a FREE Site Survey Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Who are your students connecting to? Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Wi-Fi, it’s ready for the Edge today Confidential Information Geneva Convention Center
Thank You Paul Kersse 843.737.1177 firstname.lastname@example.org www.xirrus.com www xirrus com ® 2009 Xirrus, Inc. All Rights Reserved
Additional Slides ® 2009 Xirrus, Inc. All Rights Reserved
® 2007 Xirrus, Inc. All Rights Reserved Xirrus Arrays: School Deployment Comparrison Fewer devices (avg. 4:1 ratio) saves… Equipment Cabling Installation Management Array Installation More radios provides… Greater bandwidth Higher user density Embedded threat sensors Thin AP Installation Thi I t ll ti Confidential Information 22
® 2007 Xirrus, Inc. All Rights Reserved 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
® 2007 Xirrus, Inc. All Rights Reserved 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 growth… Changed from omni to directional antennas Increased radios per b I d di base station t ti Utilized additional channels of spectrum Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Learning from Ethernet LAN Evolution Eth t Ethernet 10X bandwidth boost every ~5 years Shared evolved to switched Intelligence moved to the edge L1 Hubs L2 Switching L3 Switching 1000Base-T Connection Growth n 100Base-T 10Base-T 1990 1995 2000 2005 2010 Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Learning from Ethernet LAN Evolution Eth t Ethernet Wi-Fi Wi Fi 10X bandwidth boost every ~5 years ~5X bandwidth boost every ~5 years Shared evolved to switched Shared architectures do not scale Intelligence moved to the edge Centralized architectures do not scale L1 Hubs L2 Switching L3 Switching 1000Base-T Connection Growth 802.11n n 100Base-T 802.11a 802.11g 10Base-T 802.11b 802.11 1990 1995 2000 2005 2010 Shared Switched Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Wi-Fi Array = Greater coverage Access Point Wi-Fi Array vs. 2X More Range (100ft range) (200ft range) 4 times more coverage per device Access Points = li ht bulb A P i t light b lb Wi-Fi Arrays = array of high-powered flashlights APs CANNOT ACHIEVE THE SAME COVERAGE Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Wi-Fi Array = More bandwidth Access Point Wi-Fi Array Mbps Mbps vs. Lanes Lanes 4 times more bandwidth per device More di deployed i fewer d i M radios d l d using f devices Better performance for voice, video, and data APs CANNOT ACHIEVE THE SAME BANDWIDTH Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Wi-Fi Array = Support for more users Access Point Wi-Fi Array vs. 4 times more user density per device More M users supported using f t d i fewer devices d i Better user load balancing across all radios APs CANNOT ACHIEVE THE SAME DENSITY Confidential Information
® 2007 Xirrus, Inc. All Rights Reserved Xirrus = Free professional services Competition Xirrus vs. FREE Free site survey & security scan Free i t ll ti F installation, validation, & training lid ti t i i 5-year hardware & 90-day software warranties Xirrus has the only implementation “guarantee” in the industry Confidential Information
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