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Henry Batten, HE/FE and Healthcare Manager, UK & Ireland
MERU PROPRIETARY INFORMATION. © Copyright 2013. Meru Networks, Inc. All rights reserved.
+447904 381 977
Getting Wireless Right: An Essential
Guide for Schools
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Customer Acquisition slide (since Q4
2008)
2
Business Highlights
•Founded in 2002
•2005 first customer shipments in
US
•UKI started 2008
•4000+ education customers,
growing by 20 per week
•11ac already 95% of product
shipments and revenue
•Education forms 90% of UK &
Ireland Revenue
•Largest Education cloud network in
EMEA in Northern Ireland
•Over 100,000 access points
deployed
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The Evolution of Teaching
and Learning Over Wireless
Low Cost
Easy!
Low Cost
Easy
Device Density
Performance
Slow Log In!
Whole School
Teacher Devices
Shared Laptops
Whole Class
1:1
School Coverage
Mobility
Performance
Reliability
Drop Offs
Poor performance
Not Roaming
AP Density
Class Coverage
Performance
Reliability
Slow Log-in
Drop Offs
Coverage, AP Density, Device Density, Mobility
Relia
bili
ty,
Perf
orm
ance
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UK & Ireland Edu Customer growth
4
Excludes
1100 Schools as
part of Northern
Ireland Schools
Project Q2 2012
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Commitment to education
5
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Principle means of connectivity is now Wi-FI
The transition from Laptops to Tablets and Smartphones
6
Laptops
Tablets &
Smartphones
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Tablet Adoption
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Tablet Adoption
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Tablet adoption reflected in schools
9
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Air Traffic Control Video – start thinking
of Wi-Fi in transport terms
10
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Sticky devices / BYOD / Devices in control
• Point to note: consumer devices are designed to hang on to access points for home use.
• As your wireless devices travel around the network, are you controlling how smoothly they do so, or is the device in control? (device led, or network led?)
• Are there mechanisms to ensure devices move between access points as smoothly as possible with no performance or user experience impact?
11
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IOS Roaming
12
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Top 4 Reasons for 802.11ac Now
13
Better 11n Uses Existing Power
Future Proofing Similar Cost
11n Clients
5 to 30% Throughput
improvement
PoE802.3af
$$$
$$$2013 2014 2015 2016
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Data Rate Table
Standard BandwidthSpatial
StreamsPHY Data Rate Real Throughput**
802.11a 20 MHz 1 54 Mbps 24 Mbps
802.11n 20 MHz 1 65Mbps 46 Mbps
802.11n 40 MHz 2 300 Mbps 210 Mbps
802.11n 40 MHz 3 450 Mbps 320 Mbps
802.11ac Phase I 80 MHz 1 293Mbps 210 Mbps
802.11ac Phase I 80 MHz 2 867 Mbps 610 Mbps
802.11ac Phase I 80 MHz 3 1300 Mbps 910 Mbps
802.11ac Phase II 160MHz 1 867 Mbps 610 Mbps
802.11ac Phase II 160 MHz 2 1730 Mbps 1200 Mbps
802.11ac Phase II 160 MHz 3 2600 Mbps 1800 Mbps
802.11ac Phase II 160 MHz 8* 6933 Mbps 4900 Mbps
• *Currently there are no commercial implementations that use more than 3 spatial streams
• ** in lab conditions
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DFS
Not allowed in
Europe
Wider channels: 80Mhz and 160Mhz
15
Available Channels for 802.11ac
48IEEE channel #
20 MHz
40 MHz
80 MHz
5170MHz
5330MHz
5490MHz
5730MHz
5735MHz
5835MHz
160 MHz
36
40
44
60
52
64
116
56
136
132
124
120
108
100
104
128
112
165
161
157
140
153
149
144
Dynamic Frequency Selection
Using DFS Channels Without DFS Channels
Channel Size US Europe US Europe
40 MHz 8 9 4 2
80 MHz 4 5 2 1
160 MHz 1 2
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Why are my IPADS not connecting as
well?
16
•Original design was for coverage with 2.4Ghz capable
devices
•Access points in corridors covering 2 or 3 classrooms
•Now 5Ghz preference IPADS INSIDE the classrooms
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Some Lessons learned
17
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Lesson 1: Bandwidth and switching
• How fast is your current WIRED network?
• Am I giving the wireless the best possible networking foundations?
• How fast is your broadband connection?
• Where are you accessing information from, where are you sending information to, local or external?
• Where is the traffic going, internally or externally?
• What traffic management systems have I put in place to ensure segregation of traffic?
• What Power requirements will you need?
• Does my cabling support the speeds I need?
18
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Typical Day’s Usage at ESSA Academy
Per 1000 students in a school using mobile devices in teaching and
learning, a minimum of 100Mb/s is required of WAN connectivity
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Radley
Hi Paul, Thanks for the quick reply I'm very well so is the Meru which is great news. We now have nearly all
points installed just a few odds and ends to sort out we now have on average 1000 devices connected and it peaks at 500Mb throughput
20
Peak of 500Mb/s
at 10.30pm with
nearly 1000
concurrently
connected
devices.
570 boarders!!!
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Radley – school day
21
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Lesson 2: What type of car am I buying?
22
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Lesson 3: Just because the device is a well
known brand doesn’t mean it’s fast
• Just because devices are from well known brands doesn’t mean they have brilliant wireless cards in them
• It is often difficult to determine from the device manufacturers WHAT performance wireless cards are in a device
• Ask the manufacturer EXACTLY what chipset is in the device
• Take it for a test drive, if you can, take lots of them
23
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Lesson 4: Look under the bonnet
24
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Lesson 4: http://www.wi-fi.org/
• Look under the bonnet
• Determine EXACTLY what wireless card the device has in it
• Check the wifi alliance website
• You are looking for a minimum of 11ac and
dual spatial streams……..
25
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Lesson 5: Do you regularly MOT
(SERVICE) your cars?
26
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Lesson 5: Wireless drivers
• Wireless best practice means you should MOT your devices and you should encourage your users to do so too
• It’s law for a car, so why not instigate best practice within your users
• Devices, and therefore the overall network, will perform better with up to date drivers, like tuning a car.
• Check adapter manufacturer, device manufacturers websites
27
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Lesson 6: Driving through mist slows all the
cars down
28
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Lesson 6: Check your environment before setting off,
conditions might change during the journey as well
29
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Lesson 7: Can I put slow cars in one lane, and faster
cars in another lane and keep the network moving?
• If you introduce a BYOD policy, you will have little control over what devices the students bring in
• Some will be fast, some will be slow, some will ONLY be able to operate in only one lane
• Most will be consumer style cheaper devices due to student/parent affordability.
• Without proper planning, both wired and wireless, these could affect the performance of curriculum owned devices
• Band steering, keeping curriculum devices in their own lane are all solutions.
• Segregate Traffic and restrict bandwidth on different SSIDS
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Lesson 8: Who’s in control of the network, the
cars or the system?
• Point to note: consumer devices are designed to hang on to access points for home use.
• As your wireless devices travel around the network, are you controlling how smoothly they do so, or is the device in control? (device led, or network led?)
• Are there mechanisms to ensure devices move between access points as smoothly as possible with no performance or user experience impact?
31
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Lesson 9
32
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Lesson 9
• Train the teachers on how to use devices and software applications first
• Accept that the students may well know more about ICT and its use than the teachers.
33
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Lesson 10
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• Roads wear out
•When you have the ability to upgrade the roads, take the
opportunity
•Firmware updates available from all manufacturers with
support contracts.
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Rules of Thumb to remember for 1:1
35
•Per 1000 students in a school using
mobile devices in teaching and learning, a
minimum of 100Mb/s is required of WAN
connectivity
• If your numbers of access points in your
school is LESS THAN the number of
students divided by 17 OR, less than
number of classrooms + 20% then you are
probably under-provisioned.
•Primary = classrooms + 5
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The Eleven Commandments
Today 11ac is the standard to purchase.
2. Gigabit POE is essential from an edge switch perspective, some vendors will insist on 802.3at for 11ac access points – there is a premium for this.
3. WAN connectivity and capacity is critical, and become more so as 11ac devices proliferate , particularly in boarding schools.
4. Takes 2 to tango – device quality
5. Keep devices up to date as well as wireless software
6. Things can change in the RF environment…..
7. Who’s in control? Network or device? Head or student?
8. Train the teachers first…
9. Do not roll out until network is ready….
10. Coverage vs Density? Who is now connecting? Was network designed for what you have today
11. Patience. Wireless in an education environment is far more complicated than at home. ENGAGE WITH YOUR PARTNER / MANUFACTURER
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Thank You!
Any Questions?
37