802.11n: Platform vs. Point Solution


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Watch the full OnDemand Webcast: http://bit.ly/platformvpoints

With 802.11n ratification a distant memory, news regarding this giant leap in WLAN capability has also waned. But while 11n has quietly receded into the media background, WLANs have crept out of the cocoon of the data-only world and taken flight as full-fledged networking platforms. From dedicated 802.11 communication systems to generic voice and video over wireless with the explosive availability of smart phones, 802.11n is driving a major shift from locally available point solutions to widely distributed, highly available access for all types of applications.

Technological advances typically highlight new technological challenges, and this quiet revolution is no exception. Networks, devices, and applications all need to be monitored and managed. Mobility introduces previously unconsidered consequences. The network topology constantly changes as users access and exit the network. New devices with new capabilities crop up almost every day. This web seminar will analyze this wireless metamorphosis with a focus on addressing these key technological challenges.

In this web seminar, we will cover:

* Wireless trends
* The Wi-Fi lifecycle
* 802.11n as a driving force
* Management layers for complex wireless networks

What you will learn:

1. The importance of careful Wi-Fi design and planning
2. How to use 802.11n to your advantage
3. How to dissect and address your wireless management needs

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802.11n: Platform vs. Point Solution

  1. 1. 802.11n<br />Platform vs. Point Solution<br />Show us your tweets!<br />Use today’s webinar hashtag:<br />#wp_80211n<br />with any questions, comments, or feedback.<br />Follow us @wildpackets<br />Jay Botelho<br />Director of Product Management<br />WildPackets<br />jbotelho@wildpackets.com<br />Follow me @jaybotelho<br />
  2. 2. Agenda<br />Wireless Trends<br />The Wi-Fi Lifecycle<br />11n – A Driving Force<br />Designing and Planning<br />The Wireless Management Onion<br />11n – What Matters to You<br />Company Overview<br />Product Line Overview<br />
  3. 3. Platforms<br />Hardware PlatformA group of compatible computers (computing devices) that can run the same software (firmware).<br />Software PlatformA major piece of software, as an operating system, an operating environment, or a database, under which various smaller application programs can be designed to run. <br />PlatformA horizontal surface or structure raised above the level of the surrounding area.<br />http://dictionary.reference.com/browse/platform<br />
  4. 4. Wireless Trends<br />
  5. 5. Trends to Watch<br />Blurring the lines – Wi-Fi and Cellular<br />Wi-Fi complements cellular<br />Voice Enterprise – moving from proprietary to standards-based<br />Voice handoff<br />Fitting 11n into the design<br />Consumer devices in the enterprise<br />The rebirth of the smart AP<br />Net Neutrality – “Freedom to Access vs. Access Itself”<br />QoS pricing?<br />Tethering<br />
  6. 6. Trends to Watch (cont.)<br />Wi-Fi certification<br />Wi-Fi Direct (P2P)<br />Best of What's New 2010 designation from Popular Science<br />Enables devices to connect, share, sync, print, and play - when, where and how users want<br />Hot-spot certification – truly secure hotspot connections?<br />Higher throughput from new spectrum allocation<br />60GHz<br />Very High Throughput 5GHz<br />NOT on my list – Consolidated network management<br />
  7. 7. The Wi-Fi Lifecycle<br />
  8. 8. The Wi-Fi Life Cycle Has a Lot to Consider<br />ManagementTroubleshootingExpansion<br />”How to resolve issues and cope with changes? How to expand the network?”<br />Network Designand Requirements<br />”How to create a high performance Wi-Fi network?”<br />DeploymentandVerification<br />”Does my network function as required?”<br />Ensure coverage<br />Verify performance<br />Check correct AP configurations<br />Test end-to-end network operation<br />See the network coverage and performance during and after deployment<br />Solve Wi-Fi issues, such as<br /><ul><li>802.11n issues
  9. 9. Excessive interference
  10. 10. Rogue APs, Broken APs
  11. 11. Coverage holes / leakage
  12. 12. Plan for added capacity or coverage</li></ul>See network trouble spots and find corrective measures<br />See the impact of added access points or new technologies<br />Define applications to be used<br />Define areas to be covered<br />Find locations for the APs<br />Determine AP configurations<br />Find optimal antennas and their alignment<br />See the network coverage and performance prior to depoyment<br />Copyright © 2011 Ekahau. All Rights Reserved<br />
  13. 13. 11n – A Driving Force<br />
  14. 14. Example – Purdue University<br />"The management of our wireless network, when you boil it down, is three people. It's three busy people, but not three suicidal people." - Scott Ksander, Executive Director of Networks and Security<br />6,000 802.11n APs, 265 buildings, 10,000 users<br />Using a controller-based architecture is a must<br />Uses Cisco software for centralized monitoring but requires specific trouble-shooting tools for the field<br />11n is a must – Purdue learned the hard way that large lecture halls with 802.11bg APs could not tolerate 600 students logging in at the same time<br />Source: http://searchnetworking.techtarget.com/news/article/0,289142,sid7_gci1373978,00.html<br />
  15. 15. The Real World at Liberty University<br />Multi-channel, IP-based video (IPTV) over wireless<br />Provide roaming students with universal access to multi-channel video<br />Delivery of 15 live TV channels<br />Liberty's campus channel as well as ABC, CBS, CNN, ESPN, FOX, NBC, and a range of other broadcasters <br />Serves 46,000 local/remote students and 2,600 FTEs<br />Network includes more than 770 Aruba 802.11n access points<br />Source: http://www.marketwire.com/press-release/Liberty-University-Launches-Campus-Wide-Wireless-IPTV-Using-80211n-Wi-Fi-From-Aruba-NASDAQ-ARUN-1069662.htm<br />
  16. 16. Designing and Planning<br />
  17. 17. Wireless Network DesignNo Longer An Option<br />Visual, Enterprise-grade Wi-Fi toolkit for<br />3D Network Design<br />Deployment and Verification<br />Troubleshooting<br />Created for IT administrators / managers and wireless professional services persons<br />For anyone dealing with a Wi-Fi network of over 10 APs<br />Software application, runs on Windows laptops (XP/Vista/7 32/64bit)<br />Supports 802.11n, and 802.11a/b/g<br />Copyright © 2011 Ekahau. All Rights Reserved<br />
  18. 18. Automatic Network Planning<br />Automatically find optimal number of APs, AP placement, and configurations based on your requirements<br />Select your requirement, such as VoIP<br />Select AP model and AP parameters<br />Indicate desired coverage areas<br />ESS calculates the locations and configurations for the APs for the entire building – in 3D!<br />Fully supports 802.11n<br />Copyright © 2011 Ekahau. All Rights Reserved<br />
  19. 19. The Wireless Management Onion<br />
  20. 20. Spectrum<br />RF intensity (the higher the more intense)<br />Momentary RF intensity (blue = max, green = avg)<br />A wireless camera was first turned off, then switched on to cause an RF havoc<br />Find issues caused by non-802.11 devices, such as microwave ovens, wireless cameras, motion detectors, and Zigbee.<br />RF activity over time (bottom is now, top is 2,5 minutes ago)<br />Wi-Fi Channels 1-3 are mostly affected by the device<br />Copyright © 2011 Ekahau. All Rights Reserved<br />
  21. 21. Wi-Fi<br />Troubleshoot network issues on-the-spot, or after survey<br />Network IssuesVisualization pinpoints network problem locations and causes with a single view<br />Instant, on-the-spot assessmentusing the Live Network Status view. Take the laptop the problematic location and see what’s wrong.<br />Each color represents a different cause for network errors:Low signal or data rate, insufficient overlap, high packet loss, high latency times<br />Copyright © 2011 Ekahau. All Rights Reserved<br />
  22. 22. Network<br />
  23. 23. Wired and Wireless<br />Private<br />Network<br />or the<br />Internet<br />Access<br />Point<br />AuthServer<br />WLAN<br />Controller<br />Router<br />Air-link<br />Ethernet<br />Ethernet<br />Security protocols and policy<br />Rogue APs and clients<br />Ad-hoc networks<br />Wireless security attacks<br />QoS configuration and use<br />Signal strength<br />Dropped packets and retries<br />Tracking wireless packets onto the wired network<br />QoS configuration and use<br />VPN/MPLS<br />Application vs. network latency<br />
  24. 24. 11n – What Matters to You<br />
  25. 25. How Much Do You Need?<br />MIMO<br />Channel Bonding<br />Block Acknowledgements<br />Aggregation<br />Short Guard Interval<br />Beam Forming<br />Aruba Networks, 2008<br />802.11n – Are You Seeing It All?<br />
  26. 26. Availability<br />Must distinguish between APs and wireless adapters<br />“NxM” = 3x3 is pretty easy to find<br />Both for APs and wireless adapters<br />3x3:3 is difficult to find<br />Look for 450 MHz throughput – not many out there<br />APs are a bit easier to find<br />Wireless adapters are much more difficult to find<br />Form factor is also an issue<br />PCIe cards (internal laptop adapters) will be first to market<br />USB devices coming slowly – power is an issue in “:3” devices<br />
  27. 27. Company Overview<br />
  28. 28. Corporate Background<br />Experts in network monitoring, analysis, and troubleshooting<br />Founded: 1990 / Headquarters: Walnut Creek, CA<br />Offices throughout the US, EMEA, and APAC<br />Our customers are leading edge organizations<br />Mid-market, and enterprise lines of business<br />Financial, manufacturing, ISPs, major federal agencies,state and local governments, and universities<br />Over 7,000 customers / 60+ countries / 80% of Fortune 1,000<br />Award-winning solutions that improve network performance<br />Internet Telephony, Network Magazine, Network Computing Awards<br />United States Patent 5,787,253 issued July 28, 1998<br />Different approach to maintaining availability of network services<br />
  29. 29. What We Do<br />Provide network visibility and intelligence …<br />WatchPoint, OmniPeek, OmniEngines<br />Expert systems – we find the problems for you<br />Superior drill-down capability – trouble-shoot from anywhere<br />Flexible, customizable, extensible – leverage your investment<br />Professional services, training, best practices<br />For all network segments …<br />Data center to desktop to remote office<br />LAN, WAN, Wireless …<br />HTTP, Email, Database, VoIP, Video …<br />To …<br />Network engineers; IT Management; Developers<br />
  30. 30. Real-World Deployments<br />Education<br />Financial<br />Government<br />Health Care / Retail<br />Telecom<br />Technology<br />
  31. 31. With accurate visibilityinto the network…IT staff can improve:<br />End-user Productivity<br />Network Performance<br />Application Performance<br />Security<br />Compliance<br />
  32. 32. Product Line Overview<br />
  33. 33. Product OfferingsSoftware and Turnkey Appliances<br />Enterprise Monitoring and Reporting<br />WatchPoint Server<br />OmniFlow, NetFlow, and sFlow Collectors<br />Network Probes & Recorders<br />Omnipliance Network Recorders – Edge, Core<br />TimeLine Network Recorder<br />OmniAdapter Analysis Cards<br />Distributed Analysis Software<br />OmniPeek – Enterprise, Professional, Basic, Connect<br />OmniEngine – Enterprise, Desktop, OmniVirtual<br />Portable Solutions<br />OmniPeek software<br />Omnipliance Portable<br />
  34. 34. WatchPointCentralized Monitoring for Distributed Enterprise Networks<br />High-level, aggregated view of all network segments<br />Monitor per campus, per region, per country<br /> Wide range of network data<br />NetFlow, sFlow, OmniFlow, SNMP<br />Web-based, customizable network dashboards<br />Flexible and detailed reports<br />
  35. 35.
  36. 36. Omnipliance Network Recorders<br />Captures and analyzes all network traffic at the source 24x7<br />Runs our OmniEngine intelligent probe software<br />Generates vital statistics on network and application performance<br />Intuitive root-cause analysis of performance bottlenecks<br />Intelligent data transport<br />Network data analyzed locally<br />Detailed analysis passed to OmniPeek on demand<br />Summary statistics sent to WatchPoint for long term trending and reporting<br />Efficient use of network bandwidth<br />Expert analysis speeds problem resolution<br />Fault analysis, statistical analysis, and independent notification<br />Multiple Issue Digital Forensics<br />Real-time and post capture data mining for compliance and troubleshooting<br />
  37. 37. TimeLine Network Recorder11.7Gbps Sustained Capture<br />Fastest network recording and real-time statistical display — simultaneously<br />Network statistics display in TimeLine visualization format<br />Rapid, intuitive forensics search and retrieval<br />Historical network traffic analysis and quick data rewinding<br />Several pre-defined forensics search templates making searches easy and fast<br />A natural extension to the WildPackets product line<br />Turnkey bundled solution<br />
  38. 38. Omnipliance Network RecordersPrice/performance solutions for every application<br />
  39. 39. OmniPeek Network Analyzer<br />OmniEngine Manager<br />Connect and configure distributed OmniEngines/Omnipliances<br />Comprehensive dashboards present network traffic in real-time<br />Vital statistics and graphs display trends on network and application performance<br />Visual peer-map shows conversations and protocols<br />Intuitive drill-down for root-cause analysis of performance bottlenecks<br />Visual Expert diagnosis speeds problem resolution<br />Packet and Payload visualization provide business-centric views<br />Automated analytics and problem detection 24/7<br />Easily create filters, triggers, scripting, advanced alarms and alerts<br />
  40. 40. Key Differentiators<br />High-level network monitoring to root-cause analysis<br />Single solution for today’s converged networks<br />Wired, Wireless, 1GB, 10GB, VoIP, Video, TelePresence, IPTV<br />Reduce and even eliminate network downtime<br />Automated monitoring 24x7<br />Speedy resolution of network bottlenecks<br />Improve network and application performance<br />Uniquely Extensible Platform – tailored to your needs<br />Plug-ins and APIs for integration and customization<br />
  41. 41. Q&A<br />Show us your tweets!<br />Use today’s webinar hashtag:<br />#wp_80211n<br />with any questions, comments, or feedback.<br />Follow us @wildpackets<br />Follow us on SlideShare!<br />Check out today’s slides on SlideShare<br />www.slideshare.net/wildpackets<br />
  42. 42. Thank You!<br />WildPackets, Inc.1340 Treat Boulevard, Suite 500Walnut Creek, CA 94597(925) 937-3200<br />