This is the Webinar DTC and Meru Networks hosted on 8/25. Discussed is 802.11n technology and How Meru Networks addresses of the problems seen in the market with other Wireless Network providers.

1. 802.11n – The New Edge NetworkAccess in a post-switching world Matt Johnson, Technical Solutions Director, West Area

2. Meru Networks Company Overview Founded in 2002, Sunnyvale, CA, USA Operations in North America, APAC, EMEA NASDAQ Listed – “MERU” Mission: Deliver Wireless-like-Wire™ experience to the enterprise Virtualized Wireless LAN innovation 5,000+ customers in 55 countries worldwide Category Leadership Enterprise 802.11n solutions pioneer Wireless VoIP, Video/HD video Converged applications at scale Device and user density, seamless mobility, QOS Fixed Mobile Convergence Enterprise WLAN service assurance

3. The Network Edge Design TodayOptimized for Cubicles and Desktops The Wiring Closet The Office AGGREGATION Services CORE Services

5. Enterprise IT must adapt!Smart Devices Grow 4x Source: Rohit Mehra - IDC

6. Today’s Edge Is Dead!Network access is predominantly mobile! The New Wiring Closet The New Office AGGREGATION Services CORE Services

7. The New Edge is Untethered Mobile Dense Diverse

8. The New Edge is Multi-Media Video Voice Data

9. The New Edge is Distributed Campus Branch Telecommuter

10. What makes wireless for the Edge possible?ANSWER: 802.11n Definition “IEEE 802.11n-2009 is an amendment to the IEEE 802.11-2007 wireless networking standard to improve network throughput over the two previous standards—802.11a and 802.11g—with a significant increase in the maximum raw data rate from 54 Mbit/s to 600 Mbit/s with the use of four spatial streams at a channel width of 40 MHz.” Source: www.wikipedia.org

11. Wireless connection speed nears wired speed

12. Promise of 802.11n Better coverage Higher throughput Improved coverage through multipath and MIMO; multiple transmit and receive paths Over 6 times better than 802.11a/g * Longer range More reliable Longer range: Over 2 times better than 802.11a/g * More resistant to interference and loss due to multipath * * Based on specifications in the standard.

13. Multiple-In, Multiple-Out Converts multipath into an advantage Does the “impossible”: two transmissions at the same time More Efficient Radio (PHY) More OFDM carriers per stream Faster coding rate per stream Highest rate: 65Mbps; Lowest rate: 6.5Mbps More Efficient MAC Packet Aggregation Bursting Newer sleep modes Double-wide Channels available a b g n 802.11n = 6x Throughput; 2x Range

16. Multiple packets in one shot: Block ACKsMore Efficient A-MPDU D D D D D D Block ACK A A A A A A

18. Different Ranges for Different Clients on the same APDistance

19. 2x2, 3x2, 2x3, 3x3, … What does this mean? Number of Chains = Number of Antennas used at any one time NotNumber of Spatial Streams! Number of Spatial Streams = 3 or less, always 3x_  _x3 3 Tx Antennas 3 Rx Antennas

20. What does this mean? Number of Chains = Number of Antennas used at any one time NotNumber of Spatial Streams! Number of Spatial Streams = 3 or less, always 2x2, 3x2, 2x3, 3x3, … 3x_  _x2 3 Tx Antennas 2 Rx Antennas

21. What does this mean? Number of Chains = Number of Antennas used at any one time NotNumber of Spatial Streams! Number of Spatial Streams = 3 or less, always 2x2, 3x2, 2x3, 3x3, … 2x_  _x3 2 Tx Antennas 3 Rx Antennas

22. 2x2, 3x2, 2x3, 3x3, … What does this mean? Number of Chains = Number of Antennas used at any one time NotNumber of Spatial Streams! Number of Spatial Streams = 2 or less, always 2x_  _x2 2 Tx Antennas 2 Rx Antennas

23. Why Meru for 802.11n Meru was founded to solve common RF issues in order to allow coexistence of Voice, Video, and high volume of Data users across an 802.11 Network.

24. Let’s review the problems with WiFi today Problem #1 – Most wireless access points perform like old wired Ethernet hubs. Problem #2 – Wireless devices make connection and roaming decisions.

26. While transmitting sender cannot listen for collisions

27. As number of calls goes up, collisions increase

28. Collisions cause clients to back off

30. This leads to….. Lower than expected client counts per AP Sticky clients Clients that ping pong between APs Dropped sessions when clients move around Unequal distribution of client on APs No fairness among users that are connected Lack of QOS for real-time applications like voice Interference among APs Difficulty in trouble shooting issues

31. Solution to the Problems:Meru Air Traffic Control Patented control mechanism that times user transmissions resulting in: Little to no contention loss so many more users possible Fairness for all users even without QOS settings Cleaner RF APs coordinate activities: No co-channel interference Load balancing No ping ponging Seamless Roaming A network of APs – Not islands

32. Solution to the Problems:Virtualization of users Multiple access points appear as one One channel One BSSID Handoff eliminated Network controlled Connections load-balanced across APs Network uses its awareness of traffic conditions to route packets over the air Virtual Cell Access Point Access Point Access Point

34. Harness every MHz everywhere

36. Network guarantees each device its fair share of the air

38. Because of Air Traffic ControlTraffic Separation Voice: Highest QoS, Admission Control Video: Second QoS, Rate Limited Application-Aware Flow Detection Data: Best Effort, Airtime Fairness

39. CH 1 CH 11 CH 6 CH 1 Design Considerations Lack of Site Planning Tools Channel Planning Challenges Migration of infrastructure from .11a/g to .11n Two Different channel plans for 2.4 and 5 GHz using same AP chassis Increase in interference with Increase in range Power over Ethernet "Site surveys will be of marginal use in 802.11n environments” - Ken Dulaney, VP Distinguished Analyst, Gartner 30

40. Summary of Meru Advantages Predictable and reliable performance for all users Fairness among all wireless devices Highest density of users per radio vs other vendors A wireless network that supports multimedia Wireless network free of co-channel interference Network is in control of the wireless client (seamless roaming) Simplicity of design and ease of implementation Advanced Troubleshooting tools Better ROI and less OpEX

41. Thank you