The High Density Enterprise Environment           Simon Hollister – Regional Director           IP EXPO 2012© 2011 Xirrus,...
What is High Density Wireless?• Scenarios with 20-30+ users in one physical area• BYOD (Bring Your Own Device) is driving ...
High Density Wireless – Conference Centers
Taking a Queue from Cellular NetworksCellular networks of the 1990’s• Limited range omni-directional antennas• Limited cap...
Multi-radio Arrays Address Capacity and DensityThin APs + Controller•   Short to medium range•   1 or 2 radios per cell   ...
1 – Leverage the SpectrumTwo frequency bands used in Wi-Fi• 2.4GHz – used by 802.11b/g/n clients          • 3 non-overlapp...
2 – Deploy More Radios• Simple math:          • More radios = More bandwidth = Greater user density• But it is not as simp...
3 – Control the Client, Clear the Air• Purchase 5GHz clients  • 802.11abgn or 802.11abg, NOT 802.11bgn or 802.11bg• ‘Steer...
High Density in Action – Blackberry World 2011• Stats       • 39 Arrays       • Max simult users = 3300           • Keynot...
SummaryAchieving High Density Wireless: • Use 5GHz – 8X capacity of 2.4GHz and less interference • Deploy more radios per ...
Optimised Infrastructure
Oh no.. Unwire!
The Real World
YOUR YEAR-ROUND  IT RESOURCE – access to everything  you’ll need to know
THE WHOLETECHNOLOGY   STACKfrom start to finish
COMMENT &  ANALYSISInsights, interviews and the latest thinking on technology solutions
VIDEOYour source of live information – all the presentations from         our live events
TECHNOLOGY     LIBRARY   Over 3,000 whitepapers,case studies, product overviews and press releases from all the       lead...
EVENTS, WEBINARS &    PRESENTATIONS           Missed the event?   Download the presentations thatinterest you. Catch up wi...
DirectoryA comprehensive A-Z listing     providing in-depth    company overviews
ALL FREE TO ACCESS    24/7
online.ipexpo.co.uk
The High Density Enterprise Environment
The High Density Enterprise Environment
The High Density Enterprise Environment
The High Density Enterprise Environment
The High Density Enterprise Environment
The High Density Enterprise Environment
The High Density Enterprise Environment
The High Density Enterprise Environment
Upcoming SlideShare
Loading in …5
×

The High Density Enterprise Environment

2,034 views
1,718 views

Published on

High user density environments can push Wi-Fi networks to their limits, largely based on the contention created by many stations accessing a shared communication medium. This presentation will explore ways to provide greater user densities and achieve the performance needed to scale as client numbers and traffic loads on your network inevitably increase.

How is wireless density impacting your network? As the number of wireless devices on your network continues to increase, performance, bandwidth and reliability are impacted. Fortunately, with advances in wireless network design and next-generation architectures, wireless networks can be designed properly to ensure a successful wireless experience for all users. High user density environments can push Wi-Fi networks to their limits, largely based on the contention created by many stations accessing a shared communication medium. This presentation will explore ways to provide greater user densities and achieve the performance needed to scale as client numbers and traffic loads on your network inevitably increase.

Published in: Technology, Business
0 Comments
3 Likes
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total views
2,034
On SlideShare
0
From Embeds
0
Number of Embeds
7
Actions
Shares
0
Downloads
0
Comments
0
Likes
3
Embeds 0
No embeds

No notes for slide

The High Density Enterprise Environment

  1. 1. The High Density Enterprise Environment Simon Hollister – Regional Director IP EXPO 2012© 2011 Xirrus, Inc. All Rights Reserved.
  2. 2. What is High Density Wireless?• Scenarios with 20-30+ users in one physical area• BYOD (Bring Your Own Device) is driving higher density • Tablets • Smartphones • Personal hotspots • Printers, projectors, cameras, etc.
  3. 3. High Density Wireless – Conference Centers
  4. 4. Taking a Queue from Cellular NetworksCellular networks of the 1990’s• Limited range omni-directional antennas• Limited capacity 1 radio base stationsCellular networks today• Multiple radios per base station• Directional antennas on each tower• Utilize additional channels of spectrum
  5. 5. Multi-radio Arrays Address Capacity and DensityThin APs + Controller• Short to medium range• 1 or 2 radios per cell Centralized switching in the core 5•Multi-Radio Array• Longer range• Many radios per cell• Distributed switching at the edge
  6. 6. 1 – Leverage the SpectrumTwo frequency bands used in Wi-Fi• 2.4GHz – used by 802.11b/g/n clients • 3 non-overlapping channels • Limited bandwidth, prone to interference• 5GHz – used by 802.11a/n clients • 8-24 non-overlapping channels (differs by geo region) • Up to 8X the bandwidth, less potential for interference • Where you want to operate 802.11n2.4GHz 5GHz© 2011 Xirrus, Inc. All Rights Reserved.
  7. 7. 2 – Deploy More Radios• Simple math: • More radios = More bandwidth = Greater user density• But it is not as simple as just adding more APs • APs have fixed configuration: 1 - 2.4GHz radio, 1 - 5GHz radio • Means 50% of radios are operating in 15% of available spectrum • Channel reuse means reduced bandwidth© 2011 Xirrus, Inc. All Rights Reserved.
  8. 8. 3 – Control the Client, Clear the Air• Purchase 5GHz clients • 802.11abgn or 802.11abg, NOT 802.11bgn or 802.11bg• ‘Steer’ clients to 5GHz • Today clients are in control, you can’t always force them• Separate out low speed clients • Turn off 11b if at all possible • Separate 11a/11g and 11n clients on different radios• Limit client bandwidth • Rate limit the client to 500Kbps – 1 Mbps
  9. 9. High Density in Action – Blackberry World 2011• Stats • 39 Arrays • Max simult users = 3300 • Keynote = 1600 users on 8 devices • Max users on 1 Array = 320 • Total unique users during event = 6000 • 50% 802.11n • 0% on 11b• Configuration • Turned off 802.11b!!! • Dropped lower data rates • Limit traffic per user to 500Kbps • Limited SSIDs to 2© 2011 Xirrus, Inc. All Rights Reserved.
  10. 10. SummaryAchieving High Density Wireless: • Use 5GHz – 8X capacity of 2.4GHz and less interference • Deploy more radios per device, not just in total • Clear the air - Turn off 802.11b - Turn off lower data rates - Limit traffic per user 10
  11. 11. Optimised Infrastructure
  12. 12. Oh no.. Unwire!
  13. 13. The Real World
  14. 14. YOUR YEAR-ROUND IT RESOURCE – access to everything you’ll need to know
  15. 15. THE WHOLETECHNOLOGY STACKfrom start to finish
  16. 16. COMMENT & ANALYSISInsights, interviews and the latest thinking on technology solutions
  17. 17. VIDEOYour source of live information – all the presentations from our live events
  18. 18. TECHNOLOGY LIBRARY Over 3,000 whitepapers,case studies, product overviews and press releases from all the leading IT vendors
  19. 19. EVENTS, WEBINARS & PRESENTATIONS Missed the event? Download the presentations thatinterest you. Catch up with convenient webinars. Plan your next visit.
  20. 20. DirectoryA comprehensive A-Z listing providing in-depth company overviews
  21. 21. ALL FREE TO ACCESS 24/7
  22. 22. online.ipexpo.co.uk

×