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Strix Systems

Strix Systems. Presented by: Bret Newman, Senior Systems Engineer. Networks Without Wires ®. Tempe Conference February 2006. Agenda. Why a Mesh (current and future) Design Examples Single, Dual and Multi-Radio Offerings Strix IWS/OWS Product Overview Security Antennas NIC issues

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Strix Systems

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  1. Strix Systems Presented by: Bret Newman, Senior Systems Engineer Networks Without Wires® Tempe Conference February 2006

  2. Agenda • Why a Mesh (current and future) • Design Examples • Single, Dual and Multi-Radio Offerings • Strix IWS/OWS Product Overview • Security • Antennas • NIC issues • Network Management & CLI

  3. Structured Wireless MeshSelf-Configuring Active Mesh Path Standby/Available Mesh Path Termination Point User Coverage

  4. Future of Wireless • Current • 802.11a backhaul • 802.11b/g client access • CPE is can be 802.11a/b/g or combination • Near Future – Standards Based • 4.9 Public Safety (to client with possible 802.11A backhaul) • WIMAX • Licensed and unlicensed bands (Strix plans to support both) • LOS/NLOS • Client and backhaul uses • QoS Granularity • MIMO 802.11n (currently non-standards based) • Client Technology today • Mesh Technology in the future • Lots of antennas outside may not aesthetically pleasing • Different States will use wireless differently

  5. WiMAX Spectrum Plan

  6. Deployments with Mesh Networks Public Safety The Triple Play! Individual Homes & Businesses Hotels & Hospitality Suites Roaming VOIP Resorts VOIP Class of Service Prioritization Video Data

  7. Factors For Success Tempe looked for: • Number of radios & number of physical wired backhauls $$$ • Ease of installation • System Design • Easy to maintain • Ability to handle the hot and the cold temperatures • Upgradeability (no fork lift upgrade) • Easy to manage & administer (firmware and features) • Security (AES, WPA, TKIP) • QoS with Prioritization (802.1q tagging) • Client roaming • Indoor and Outdoor integration

  8. Different Approaches To Mesh Networking All mesh should be self-configuring, self-tuning, and self-healing - But all mesh is not the same

  9. One Radio Mesh - Competitors Adjacent radios must suppress broadcasting while other radios transmit Requires access point to listen before broadcasting • One radio mesh is considered the most basic of mesh networks. • One radio/one channel per node • Linear listen, receive, send • For data to be relayed, it must be repeated • Nodes listen and retransmit • Retransmission requires adjacent radios to be quiet • Minimum 50% degradation per hop! Wire CH 1 CH 1 CH 1 CH 1 CH 1 CH 1 Requires access point to listen before broadcasting CH 1 May operate at layer 3 Proxy ARP

  10. Two Radio Mesh • Two radio mesh networks. • One B/G radio (client access) and one A radio (backhaul) per node • Limited number of client associations • Backhaul radio still has to listen then transmit (only one radio at a time) • May require separate controller to connect to physical network • Still has 50% hop degradation!

  11. Structured Wireless Mesh A A A G G G A A A G G G Ch1 Ch11 Ch6 AES Encryption AES Encryption Ch44 Ch56 • Dedicated Radios by Function 802.11a - Backhaul Egress, Backhaul Ingress • 802.11a/b/g - Client Ingress (AP) • Full Duplex Transmission Via Multi-Radio Hops • Operates at Layer 2 for data and Layer 3 for Management • 100 Megabit switching between radio modules • AES encrypted links • Encryption performed in hardware for minimal latency • Dynamic Channel Allocation Legend EGRESS – Strix Network Connect 802.11a INGRESS – Strix/User Client Connect 802.11a INGRESS – User Client Connect 802.11g

  12. Full Duplex Structured Mesh • Strix Systems’ Access/One Network technology creates a structured mesh network, yielding “full duplex” performance • Dedicated radios – 802.11 a/b/g • Client connect radios for full-time “listening” to client traffic • Network connect radios, one for full time “listening” one for “speaking” • Near-zero throughput loss per hop and minimal latency <3ms • Self-healing/Self-tuning/Self-configuring • High-speed roaming >95mph (for mobile vehicles Strix recommends a Strix IWS) • Indoor access from a Strix or third party CPE CH 1 CH 11 Wire CH 1 802.11g 802.11g Use of AES encrypted 802.11a provides many non overlapping channels, reducing interference AES encrypted AES encrypted 802.11a 802.11g 802.11a CH 44 802.11a 802.11a CH 106 CH 1 CH 6 CH 1 CH 6 802.11g Access/One nodes start sending packets even before all are received 802.11a 802.11g 802.11g AES encrypted 802.11a 802.11a CH 153 802.11a 802.11a CH 130 EGRESS – Strix Network Connect 802.11a INGRESS – Strix/User Client Connect 802.11a INGRESS – User Client Connect 802.11g

  13. Example of self healing 802.11g 802.11a 802.11a • Intelligent pathing based on: • Availability • Round trip delay • Signal/noise ratio • Interference • Each node is always scanning alternate paths • Network intelligently tunes accordingly • Upon failure, nodes reroute within milliseconds CH 1 CH 11 Wire CH 1 802.11g 802.11g AES encrypted AES encrypted 802.11a 802.11g 802.11a CH 44 802.11a 802.11a CH 106 CH 1 802.11g 802.11a 802.11g 802.11a 802.11a EGRESS – Strix Network Connect 802.11a INGRESS – Strix/User Client Connect 802.11a INGRESS – User Client Connect 802.11g

  14. So What Does This Mean? Less than 20-40ms Latency Across 10 Hops – Suitable For Voice and Video Applications

  15. Strix Systems OWSHigh Performance Strix Systems Multi-Radio Mesh Strix Systems Multi-Radio Mesh In a Noisy Environment Bandwidth (Mbps) 11g 11b Competitive Single Radio Mesh Number of Hops 802.11a, 3 Radio System (client, ingress, egress) Low Latency Across Multiple Hops Suitable for Real Time Voice and Video Applications

  16. Competition • Point to point – wired access points • Just about any outdoor single radio AP • Wireless bridging or WDS – one radio does receive and send • Tropos, Firetide, Cisco • Bridged Mesh – dedicated radios, not switched • BelAir, Cisco, Nortel • Structured Mesh – Full time dedicated radios for ingress, egress and client connectivity • Strix!

  17. Example Design Termination Point Mesh Nodes Core Nodes Edge Nodes Access Nodes Hardwired

  18. Example Design • STRIX • 63 Nodes • 1 Network Connection • 62:1 • COMPETITOR • 63 Nodes • 7 Network Connections • 9:1 Ratio

  19. Access/One Network OWS Hardware

  20. Access/One Network OWS • Multi-radio, multi-channel, multi-RF system • Hardened for all environments • Self-discovering, self-tuning, self-healing, high-performance mesh network • Secure, manageable, & scalable • Upgradeable to new technologies (WIMAX, 4.9) • IWS & OWS - Seamless

  21. Access/One Network OWS Hardware • Two Hardware Designs • Multiple Mounting Options • Power, antenna and data Protection • Modular - up to six 802.11 a/b/g Radios • Multiple external antennas 2400 Series 3600 Series

  22. OWS 2400-20 OWS 2400 Series • Each radio module supports up to 2 radios 1 “A”, 1 “B\G” • Depending on chassis 2-6 radios • Depending on chassis support up to 6 antennas + 2 diversity • AC/DC Input • Ethernet port

  23. Security Shield • Secure Transmission of all Data • Backhaul is all EAS 156bit encrypted • Hardware Acceleration for AES Mesh • Supports WEP, WPA, AES (TKIP) • Multiple security schemes per SSID • Ex: Hidden SSID plus authentication for private and Open SSID for public access • Ex: No client to client access on one SSID while allowing it on another • Authentication and Authorization • Uses 802.1x standard • RADIUS Client Functionality Built-In • Supports Authentication Gateways & Radius Servers • Network Segmentation • 16 MAC Addresses per Radio with unique SSIDs • 802.1q support, 250 VLANs per radio • Security traverses with the user while roaming • Transparent support for VPN • Monitoring • Rogue Access Point Detection • Client-connect privacy (protects against broadcast storms and DoS attacks)

  24. Antennas?

  25. Antenna Options Strix provides a recommended list of antennas for usage in various scenarios

  26. Antennas • 12 dBi Patch Antenna •     Beam width:  25° Vertical, 65° Horizontal • Pole Mount Kit available (Shown in photo) • 6" X 13" X 1.25" • 12 dBi 120° Sector Antenna • Beam width: 13° Vertical, 125° Horizontal • Approx. 5" X 21" X 5" • 0-20° Elevation Angle adjustment

  27. Coverage with Sectorized Antennas Vs Omni Standard Omni coverage pattern 120° coverage pattern Radio 1 Coverage Area Extend the reach Radio 3 Radio 2 Single radios for each sector

  28. NIC Cards Receive strength great but still no access??? Not all wireless NICs are created equal! The wireless NIC may display a good signal but your wireless NIC may not have the power to transmit back to the Access Point. Some wireless NIC drivers regulate transmit power in laptops.

  29. Management

  30. Access/One Network OWSManagement and Security • Manager/One, Carrier Grade Management • HTTP/HTTPS – GUI • Telnet/SSH – Command Line • SNMP Reporting & Traps • Syslog support • System and device level management • Virtual/Strix Systems, Priority/One • Multi-service networks • Prioritized Traffic for end-to-end QOS • Security, AES, Client level port blocking of all traffic • Locate rogue access points

  31. Summary: • Covered Mesh Technology • Current Radio technology • Tempe & Wisconsin designs • Differences in radios • How a multi-radio mesh functions • Strix overview • Security • Antennas • Management

  32. Thank You! Questions ??

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