Different by Design WLAN Infrastructure that Assures Application Delivery and Toll-Quality Voice

1. Different by DesignWLAN Infrastructure that Assures Application Delivery andToll-Quality Voice

2. Business-Critical Convenient Important 2nd Generation Stand Alone 3rd Generation Centralized 4th Generation Traffic-optimized 2002-03 2004-05 2000-01 • Data • E-mail • Brower • Web services • Data • E-mail • Browser • Basic Connectivity The Evolution of WLAN • Data • Voice • Streaming video • E-mail • Browser • Web services • Integrated messaging • Critical business applications • Primary connectivity

3. Guaranteed delivery of business-critical applications is a must • Businesses today mandate guaranteed application delivery • Business-critical applications must work regardless of the medium over which they are delivered • Applications must run as well on a wireless LAN as they do on a wired one • The user experience and application performance must be the same LAN=WLAN

4. Guaranteed application delivery doesn’t happen by chance • WLANs must be application-aware to guarantee delivery • Voice has unique QoS needs • Streaming video needs downlink bandwidth • Slow/fast clients need fair air time allocation • Mobility requires instantaneous handoffs • Traditional WLANs have unpredictable application delivery • No application awareness – the network doesn’t adapt with new clients and applications • No upstream flow control - clients independently decide when to transmit • The initial deployment consumes all usable channels leaving no reserve capacity • Functional for e-mail and Web browsing but not for mission-critical applications

5. Meru’s WLAN platform is different by design • Meru is the only WLAN vendor to provide guaranteed application delivery • Adjusts in real-time to mission-critical data, voice, and streaming video applications • Analyzes traffic in real-time, continuously optimizes the network for every application • The WLAN decides when clients transmit, providing flow control and yielding the highest performance WLAN in the industry • The result: highest bandwidth, highest density, fastest handoffs, highest MOS scores

6. Meru’s Value Proposition - Key Differentiators • Air Traffic Control • Ease of Set-up and Use • Virtual Cell Technology • Investment Protection

7. Key differentiator: Air Traffic Control Air Traffic Control Technology • Manages upstream and downstream application flows like a switch • Coordinates flows between Access Points and eliminates co-channel interference • Provides air time fairness • Enables high-density, mixed 802.11b/g client networks • Uses standard (non-proprietary) clients • Cellular-like Architecture

8. Hubs vs. switches • A hub shares the total bandwidth among all users without regard for fairness - this is how traditional WLANs work • A switch provides a dedicated line at full bandwidth between every two devices yielding fairness and high throughput - this is how a Meru WLAN works

9. User Density 100+ Active Users Per Access Point 5X 20-25 TCP 802.11g only (no b clients ) TCP Mixed Environment (802.11g & b clients) ~20.1 ~18.1 ~16.8 802.11b/g Performance ~3.4 Vendor C Meru Vendor C Meru Vendor C Meru Real world benefits of Air Traffic Control Fairness

10. 1 11 1 6 6 11 1 11 1 6 6 1 11 1 11 1 6 6 11 11 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 6 6 1 1 11 1 11 11 1 6 6 11 1 1 11 1 6 6 1 11 1 11 1 6 6 11 11 6 6 6 6 6 6 6 6 6 6 6 6 1 1 1 1 1 1 1 1 1 1 1 1 1 11 11 11 11 11 11 11 11 11 11 11 11 11 11 Key differentiator: Ease of Set-up and Use Expanding a Traditional WLAN • Traditional WLAN • To minimize interference power levels are lower so cell size is smaller– requires more Access Points, cable drops, and labor • Recurring site surveys • Adds/moves/ changes requirechannel reassignment • Meru WLAN • Single channel eliminates interference so full power can be used, larger areas covered so fewer devices required • Access Points can be added toincrease capacity as needed without a channel planning survey Expanding a Meru WLAN

11. Key differentiator: Virtual Cell Technology • Manages network access and handoffs • Instantaneous handoffs • Delay-free roaming • Toll-quality voice • Application load-balancing Ch. 11 Ch. 6 Ch. 1 Traditional WLAN deployment Ch. 1 Meru WLAN deployment

12. X Traditional WLAN: Roaming and handoffs Delayed Dropped • Roaming client scans for the next strongest signal then disconnects/reconnects from Access Points • Handoff takes 50-1000ms, is noticeable to callers, and can result in dropped calls • Client decides when to handoff and to which Access Point to connect…even though it knows nothing about the Access Point’s load or capacity • Cannot intelligently select the optimum Access Point – it’s hit or miss • Controller cannot enforce roaming direction, only reject clients Ch1 Ch6 Ch11

13. No Delay No Dropout Meru WLAN: Roaming and handoffs Ch1 Ch1 Ch1 • A roaming client stays on one channel, and the Meru Controller – not the client – decides when to switch • Process is instantaneous (≈3ms), silent (transparent) to callers, and drop-free • Controller knows the best Access Point for handoff based on application, load balance, and signal quality • Unlike a client, the Controller has knowledge of the entire network and can make informed decisions

14. No over-the-air QoS Over-the-air QoS 30+ Toll Quality Wired QoS Wired QoS AP Meru AP 5X 7-10 < 5 Today’s AP Standard Client Today’s AP Proprietary Client Meru AP Standard Client Typically on separate channels/network Dynamic mix of voice and data on same channels Meru Toll Quality Voice Meru QoS = 5X Voice Calls Per Access Point

15. Key differentiator: Investment Protection • Future-proofing • Requires fewer Access Points, cable drops, and POE than traditional VoWLANs • Forestalls the need to touch clients to add to 802.11a or 802.11n for new applications or VoWLAN Meru offered the best balance across usage, security and cost. In terms of both our current needs and our future plans to expand the network by adding voice and additional data applications, Meru’s WLAN System was the clear choice. Dan Wittekind, Director of Information Systems, LifeSphere

16. Traditional WLAN Meru Virtual Cell Traditional WLAN Less equipment, simpler installations, better coverage • Traditional WLAN operates at lower power to minimize interference • Requires more Access Points, more cable drops, and more POE devices • More Access Points require more lengthy surveys and increase interference • Dynamic power adjustments cause erratic client behavior, distant low-speed clients consume bandwidth • Meru Virtual Cell WLAN operates at full power • Requires fewer Access Points, cable drops, and POE devices • No channel surveys or interference issues • Stable clients, fair consumption of bandwidth

17. A single channel architecture preserves RF resources • Traditional WLAN consumes RF resources • Meru Single Channel WLAN preserves RF resources All RF channels are consumed – Access Points must be modified or replaced for expansion and future applications Ch. 6 Ch. 1 Ch. 11 Virtual cells can be layered to add capacity/bandwidth without touching existing Access Points Ch. 11 Ch. 6 Ch. 1

18. Iowa Customers: Industry Firsts University of Miami Medical • World’s largest single channel deployment • University of Michigan • Highest user density production deployment • Philadelphia School District • High density and high availability in largest WLAN enterprise network • Osaka Gas • Largest dual-mode phone FMC deployment • Multiple customer deployments • Zero handoff for clients as they roam from AP to AP UNCC Dade County FEMA DoJ Nike

19. Gartner Magic Quadrant Meru’s converged voice, data, and video WLAN platform sits at what the Gartner Group calls "the high end of the technology spectrum"

20. Sales, support, training worldwide Meru NetworksCorporate HeadquartersSunnyvale, California 94087Tel: +1-408-215-5300Fax: +1-408-215-5301 www.merunetworks.com