high density wireless / byod / distance learning presentation for october 26th, 2012
TRANSCRIPT
High Density Wireless / BYOD / Distance Learningpresentation for
October 26th, 2012
IntroductionsTeam Members:
• Mike Martin, Senior Account Executive
• Jeff Whaley, Business Development Manager-Media Solutions
• Dave Benham, Wireless Practice Manager
1st Half (BYOD) Agenda• BYOD challenges
• Importance of an enterprise wireless network
• High client density challenges
• Device profiling and posture assessment
• 802.11n
• 802.11ac
2nd Half (Distance Learning) Agenda• Toledo Public Schools Overview
• What problems were being solved?
• Considerations both technical and administrative.
• Planning- How was it approached?
• Technical Design
• Implementation and Rollout
• Training, Training, Training
BYOD
• Show of hands: – How many plan to use BYOD for instruction?– How many just have to deal with
students/staff bringing devices and expecting internet access?
• Prepare yourself…
BYOD Challenges from a network perspective
• Security• AP Density
– Capacity in high density client areas• Scalability• Management
The Importance of an Enterprise WLAN
Security
• User authentication (802.1x) isn’t enough in some environments– PSK isn’t manageable or secure– EAP-TLS can be too complex and time consuming to
manage– Machine Auth alone lacks reporting and makes
troubleshooting difficult• Device profiling is key… Details later in the
presentation.
Features and Management
• Spectrum intelligence– Be aware of what you’re really getting– Some solutions require APs to be taken offline to analyze the
spectrum– Be proactive not reactive
• Top talker report• Busiest APs report• Location tracking• Rate limiting• Troubleshooting tools• Interface groups• Load balancing
Multicast Video
• Understand multicast video over WiFi… • Multicast must be more efficient than
unicast, right? Not necessarily.– Packets sent at highest mandatory data rate– No error correction
• Solutions: – Implement a wireless solution that
efficiently manages multicast video– Use unicast video
High Client Density Challenges
Clients using more bandwidth than you think?
• WiFi is a shared medium– Bandwidth surge at beginning of class
period• GPOs• Deep Freeze
– Print drivers– AV and application updates
• Roaming profiles
• All of the above = long delays at the beginning of class time
Bad clients• Aluminum cases
– WiFi doesn’t like it– Guess what most popular mobile devices are
made of?• Weaker signal = slower data rate• More clients with slow data rates means less
bandwidth available for all clients• Solutions:
– More dense AP deployment– Beamforming
Device Profiling and Posture Assessment
Device Profiling – 1st defense
• Allows different access levels to be automatically applied to different devices, even when using the same credentials.– For example:
• Mobile devices = Internet + AirPlay• Laptops allowed full access with posture
assessment
– No need for certificates, etc.– Can isolate or deny access to certain device
types as well
Posture assessment – 2nd defense
• Performs additional checks to verify the workstation is yours before allowing full network access– Can validate just about anything on the
device before allowing network access
802.11n – More than just speed
• Reliability– Making use of multipath to increase SNR
• Capacity– Faster processors in the APs allow more
clients connect to a single AP• And of course, speed
– 450mbps with 3x3 @ 5GHz– 144mbps (20MHz channels) @ 2.4GHz
802.11ac – To wait or not to wait?
• 802.11ac = Gigabit wireless• 5GHz only
– Similar propagation to existing 802.11n (5GHz)• 80MHz channels = less available channels. 3, to
start.• More transmitters may have negative impact on
battery life• Best bet: Use upgradable APs in high capacity
areas, and 802.11n APs everywhere else, for now.
Classrooms of the Future-Distance Learning Case Study Presentation for
October 26th, 2012
Agenda• Toledo Public Schools Overview
• What problems were being solved?
• Considerations both technical and administrative.
• Planning- How was it approached?
• Technical Design
• Implementation and Rollout
• Training, Training, Training
Toledo Public Schools
Case Study Overview
Case Study Overview
• Large K-12 located in Northwest Ohio• Faced with reduced Funding and Student
Count• Needs to increase Educational Offerings to its
students• Facing Geographical Challenges
What Problems were being Solved?
Problems to be solved
• In the face of reduced student counts and funding, trying to find a way to provide advanced course content amongst its 7 High Schools.
• Being tasked with building advanced learning environments-(ie. Virtual classrooms)
• Changing Educational times….Kids are learning differently• Geographic Limitations for providing classes to all seven
High Schools• Funding forcing hard decisions around available course
content.
Considerations both Technical and Administrative
Considerations
• Technical-– Network…Am I ready?– Scheduling….what is necessary to make this work– End User interface……simple is best!– Room Layout and Design…….best user experience
• Administrative-– Big Changes for educators……they must be on board– New way to teach…teaching for the future– Be selective with classes…..decide what works best– Planning, Planning, Planning
Planning- How was it approached?
Successful Planning
• Have all affected parties involved- Develop a planning team with everyone represented (IT, Facilities, Senior Leadership, Educators, etc.)
• Room Selection• Course Selection• Targeted Educators- They must be excited and onboard!• District Communications (bell schedule, course scheduling
etc.)• Network Considerations- Bandwidth and QOS• This takes time…Not a solution to enter in to quickly.
Technical Design
Technical Design• Room Selection
– Physical room location– Security
• Choose the Right Equipment for the best user experience– Projectors/Displays/Smart boards– Control Systems– Sound Reinforcement– Video Conferencing Codec
• Room Layout– Camera Angles– Correct Seating layouts for number of students– Lighting– Acoustics
• Network– Switch Infrastructure– Back Haul
Implementation and Rollout
Implementation and Rollout• Timing and Scheduling• Network complete and tested
ahead of time.• Leave Time for Testing• Prepare for Training
Training, Training, Training
Training• Training for Educator• Training for Room Facilitator (Para)• Training For IT Support • Training For System Administrators• Training Tools- Factor into design
Q&A
Thank You!
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Q&A
Thank You!