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The New Frontier of Enterprise Wireless

The New Frontier of Enterprise Wireless. April 2009. On the 2.4GHz band, only 3 Non Overlapping channels. Frequency Constrains. Radio Basics – Coverage <> Range. Radio Coverage:

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The New Frontier of Enterprise Wireless

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  1. The New Frontier of Enterprise Wireless • April 2009

  2. On the 2.4GHz band, only 3 Non Overlapping channels. Frequency Constrains

  3. Radio Basics – Coverage <> Range Radio Coverage: This is the area a client can hear an Access Point and reply successfully – Typically 10 Metres radius from the AP at 54 Mbps Range: The RF energy does not stop simply because the client and AP can no longer interpret the data, typical Range may be 2,000 meters Distance Radio Transmission Still Continues Client Connects @ 6 Mbps Client Connects @ 1 Mbps Client Connects @ 54 Mbps

  4. Radio Basics – Why Coverage <> Range Multipath: When a client hears the same data from a single AP several times, this can corrupt the signal. Reflection: Flat metallic surfaces tend to reflect RF energy Refraction: Metal grids can distort the RF energy making it unusable Absorption: Fluids usually absorb RF energy as in a microwave.

  5. Wi-Fi So Far… • Traffic contention • Unreliable connection

  6. Wi-Fi So Far… • Traffic contention • Unreliable connection • Slow or wrong mobility • AP-to-AP interference • Coverage gaps hard to fix • APs individually configured • One AP serves all. QoS hard to be assured Only one channel per area

  7. AP to AP Interference Up to 21dBm between 54 and 1 Mbps AP coverage can be more than double at low speed

  8. The Trouble with Cells…802.11 is meant for a Single-Cell Environment • Forces a Single-AP protocol to function in a Multi-AP Environment • Results in trade-offs: a “tug-of-war” Trade-Offs Coverage vs. Capacity Capacity vs. Mobility Mobility vs. Security This architecture is impaired by the 802.11 Standard.

  9. Wi-Fi Headaches • High OpEx • Radio Planning is an Expensive and long task • Filling up network coverage gaps is a hard task often requiring AP repositioning • Wireless Network Tuning is a continuous task requiring well trained professionals • 802.11n with its ability to take advantage of multipath increases the pain • Planning AP coverage is almost impossible because of unpredictable reflections • AP coverage changes as people move, because being made mostly of water, humans absorb and diffract radio waves

  10. Wi-Fi Headaches • Low spectrum usage • Cannot fully reuse channels In order to limit interferences • Network Performances depend upon client devices! • AP selection made by client • The less performing client slows down the network • Lack of real mobility • Roaming decision taken by client • Roaming Process is critical and not fully reliable as it must be in order to support VoWLAN applications • Weak physical security • AP, even if lightweight, store network critical data: Keys, Credentials, Access Lists, etc. • AP can be replaced by fake ones in order to access network and grab credentials • Hence AP must be physically locked

  11. How Extricom by ATI solves all those issues

  12. A High-Performance Wireless IP Cloud –The Extricom Channel Blanket™ Client Independent The Channel Blanket™ Centralize 802.11 Logic, Distribute the Radio Only A “single cell experience” gives: Steady Throughput Any-Density RP Positioning Consistent Client Behavior • AP-Anywhere (no need to configure) • Mobility • Guaranteed Bandwidth

  13. Multi-Service WLAN Blankets 1 6 11 Rogue The Channel Blanket™ Centralize 802.11 Logic, Distribute the Radio Only + Multi-Layer WLAN Distribute four radios, set to any combination of channel, band & mode Traditional APs cannot use more than 1 channel in each band • AP-Anywhere • Intrinsic Mobility • Guaranteed Bandwidth • Capacity • Simplified QoS • Dedicated Security Monitoring

  14. Multi-Service WLAN Blankets 1 6 11 Rogue The Channel Blanket™ Centralize 802.11 Logic, Distribute the Radio Only + Multi-Layer WLAN Distributefour radios, set to any combination of channel, band & mode + TrueReuse™ Dynamic frequency reuse • AP-Anywhere • Intrinsic Mobility • Guaranteed Bandwidth • Capacity • Simplified QoS • Dedicated Security Monitoring • 3X Channel Bandwidth • Up to 10X System Aggregate Bandwidth

  15. Cell Planning – Hard Work

  16. Roaming = Poor Quality Disconnect From AP on Channel 6 Request to join AP on Channel 1 Authenticate with central Radius Connect and start recovering data Disconnect From AP on Channel 11 Request to join AP on Channel 6 Authenticate with central Radius Connect and start recovering data Client Dependent! PDA

  17. Cell Planning – No Need With Extricom Even the most basic client gets seamless mobility Client interacts with a single AP: Same SSID, Same MAC (BSSID) PDA

  18. QoS – Best Effort – All Channels Congested Traditional Cell Planning

  19. QoS – Guaranteed – All Channel Dedicated Client Independent

  20. TrueReuse: Multiply Bandwidth with Seamless Mobility Client Independent

  21. “Natural” Frequency Reuse - download • Multiple use of the same channel, geographically separated • IEEE 802.11 standard – CSMA/CA – listen before talk • Distance between APs which will be “allowed” by the standard to transmit simultaneously on the same frequency • more then 100m, dependent on the environment. (office environment, open space, wall types, etc. Re-use distance Re-use distance Re-use distance

  22. Without TrueReuse • WLAN is a shared media, all clients will share the bandwidth available on the channel. • On every channel, only one RP or client will transmit at a time. This is protected by the Collision Avoidance mechanism of the 802.11 standard.

  23. TrueReuse Client Independent • Channel blanket dynamically “subdivided” into multiple collision domains, to create simultaneous multiple links without co-channel interference • Switch uses real-time knowledge of link differentials between all clients and all RPs to determine the re-use opportunity

  24. TrueReuse – How it works? C1 I2 I1 C2 • The link difference is what matters: • If C1/I1 > Reuse Threshold, then permit transmission to Client 1 • If C2/I2 > Reuse Threshold, then permit transmission to Client 2 • The switch uses received signal strength measurements to calculate the above ratio

  25. What about physical security • Extricom Radio Points (EXRP) are NOT AP • Are simple radio interfaces • Do not contain any sensible information at all • Do not have any flash memory to store any information • Useless without the switch • Extricom Switches (EXSW) can be secured into locked cabinets or wiring closets • RP-Switch protocol is not Ethernet • It is real time with very tight timing constraints (some ns). Almost impossible to spoof by a PC • Even tapping into RP-Switch connection will show only what goes on air

  26. IEEE 802.11NBenefits without Pains

  27. Full .11n performances Cellular Approach • Full-performance 802.11n (40MHz) is not possible. There is only 1 channel available • Mixing .11g traffic strongly affects .11n performances ? ? ? ? 11 ? 1+6 ? Channel Blanket • Full-performance .11n and .11g • .11n and .11g traffic separated on different channels n g 1+6 11

  28. Captive Portal • Switch controls client’s access to the internet • After client connects to the WLAN, when opening it’s browser he will receive a login WEB page located on the switch • Clients shall enter their user-name/password, and the switch shall authenticate the user with the Radius server (using Radius client protocol) User can customize default page by modifying text, images and colors (no html knowledge needed), or upload own html page

  29. Extricom Products WLAN Switches Radio Points Management & Planning Accessories

  30. Technology Background: Multi Series 1000 Appliance Platform • High-performance Hardware Platform • Software-configurable • Gigabit Ethernet Uplink ports • Downlink ports: up to 16 GbE with IEEE 802.3af PoE(software-enabled) • Products using this platform: • EXSW-1600 • EXSW-800G

  31. Extricom WLAN Switches • EXSW-1600 / EXSW-800G GbE WLAN Switch • Support up to 16 or 8 UltraThin RPs (a/b/g/n) • Up to 4 simultaneous channel blankets • Hardware based 802.11i security • Built-in PoE • EXSW-2400 / EXSW-1200 FE WLAN Switch • Support up to 24 or 12 UltraThin RPs (a/b/g) • Up to 4 simultaneous channel blankets • Hardware based 802.11i security • Built-in PoE • EXSW800 / EXSW400 FE Small WLAN Switch • Support up to 8 or 4 UltraThin RPs (a/b/g) • Up to 2 simultaneous channel blankets • Hardware based 802.11i security • Built-in PoE

  32. Extricom UltraThin™ Radio Points • Extricom UltraThin™ Radio Points • UltraThin - No software or processing needed in the RP • Multiple 802.11n/a/b/g radios • 802.3af Power over Ethernet (PoE) • Anti-breach security and built-in Rogue AP detection EXRP-20 / EXRP-40 Dual or Quad-Radio, a/b/g, Integrated Antennas EXRP-20E / EXRP-40E Dual or Quad-Radio, a/b/g, External Antennas EXRP-40En Quad-Radio, n/a/b/g, 3x3 MIMO, External Antennas EXRP-30n Tri-Radio, n/a/b/g, 3x3 MIMO, Integrated Antennas

  33. Accessories • EXRE-10 & EXRE-20 PoE Range Extender • Double the range of PoE to 200m • In-line and self-powered • Drains 1.5W only • Allied Telesis Fiber Extenders • Up to 700m of cable between switch and RP • Fully transparent to Switch and RP • 2 x AT-MC1000 • Multimode fibre link • 1 x AT-6101G PoE Injector 100m 100m

  34. Carton Box Label -50 -50 ATI Labeling Equipment Label

  35. Allied Telesis Success Story Kawashima Selkon Textiles Co. Ltd

  36. Extricom Management Options • Internal Management • Web GUI • Configuration • Status • Security • NMS (EXNM-2000) • Fault Management • Performance • Configuration • Bulk operations on multiple Switches

  37. EXNM Main Benefits • Single solution to manage large-scale, multi-device networks • Accelerated system rollouts and easy network updates • Full-featured fault management including notification capabilities • Real-time network health monitoring • Scheduled bulk operations on multiple switches • Integration with other major NMS solutions • Secure, auditable management of users and user groups … all this, in an intuitive GUI

  38. EXNM Features • Scalability • Auto-discovery of up to 2000 switches associated to thousands of Radio Points (RPs) • Group configuration of all discovered switches as if they were a single switch • GUI • Intuitive, Graphic Based • Monitoring of the whole networkfrom a single screen • Northbound interface • for integration with existing NMS Geographic Map View

  39. EXNM Features – cont. • System Configuration • Configuration tasks on individual and group of switches (e.g. add same ESSID, reboot, upgrade firmware…) • Drill down to specific devices from High level Geographic map views • Security Management • Secured client/server sessions • Optional interface to LDAP servers for user authentication and management • Privileges based on profiles • Audit trails Security Configuration

  40. EXNM Features - cont. • Fault Management • SNMP traps • Real-time status • Visualization of Extricom Network • Performance • Configurable statistics polling • Graphical reporting on statistical performance of individual devices or of the whole system • Interoperability • Configurable Northbound interface for 3rd- party systems (e.g. Tivoli™, etc.)

  41. Ordering Information

  42. High Availability • Higher resilience than “N+1” system integrity • AP redundancy • An option to create redundancy only in high availability areas • Uplink Diversity • Failover transparency • Eliminating Single Point of Failure (SPOF) • Competitive pricing over “1+1” component level • No need to duplicate AP’s • 2nd switch licensed as cascaded

  43. L 2 Internet DHCP Server E-mail EXSC-1000: Subnet Roaming Controller Main EXSC Redundant EXSC L2/L3 GRE tunneling 128.128.1.1 128.128.1.1 Using EXSC, a client can seamlessly connect to a WLAN Switch located in an other subnet WLAN Switch is connected to a specific subnet

  44. About Extricom ex.tri.com — from the English word extricate [Latin root extricare] 1. To free or release from entanglement or impediments.2. To untangle and/or simplify communications.

  45. Extricom Mission Statement • Provide high-performance wireless LAN (WLAN) infrastructure for the Enterprise Market, enabling the converged triple play of data, streaming video, and voice over WLAN (VoWLAN)

  46. About Extricom • Vitals • Principal offices in New York, Tel-Aviv, London, Tokyo • Founded 2002 • Patented: 18 filed, 9 granted • CTO is one of original members of IEEE 802.11 group • The Proposition • Superior performance and dramatic simplicity • Multi-use infrastructure – voice, data, location, video, guest services

  47. Product Recognition • TechWorld Wireless Product of the Year – Finalist (2008) • Communications Solutions Wireless Product of the Year (2007) • CMP CRNTech Top 10 Products of the Year (2007) • VARBusiness Tech Innovator of the Year (2007) • The most innovative products in the industry sold through the IT Channel – Wireless Category • Communications Solutions Wireless Product of the Year (2006) • TechWorld Wireless Product of the Year (2006) • Awarded for Enterprise functionality, performance, and value • Internet Telephony Wireless Product of the Year (2006) • Awarded for innovation for VoIP over wireless

  48. This is just the beginning! • Thank you! • Visit us on www.alliedtelesis.com

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