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The Easy Way OutDeploying Wi-Fi Networks More Quicklyp y g Q y
Jussi KiviniemiVice President, Wi-Fi Tools, EkahauVice President, Wi Fi Tools, Ekahau
Twitter: @jussikiviniemi
Anyone can install a Wi-Fi network.
Installing one that not only works but can“
deliver valuable functionality to your business
requires skill, and planning.
Ellie Hagopian
CEO / Skyrove, Deputy Chair / WAPA
You wouldn’t start constructing a building“without blue prints.
Justin Cetko
WLAN Consultant, Skyline Networks
Agenda
• Why do it faster?Source: The Simpsons
• How to do it faster?– Slides
p
Slides
– Demo
• Wrap up & Q&A• Wrap-up & Q&A
About the Presenter
• Jussi Kiviniemi
• Head of Wi-Fi Tools business at Ekahau
• 15 years with Wi-Fi
• 10+ ears de eloping Wi Fi• 10+ years developing Wi-Fi tools
Why do things better and faster?
• Designing, deploying and verifying a sizable enterprise Wi-Fi network takes weeks
• Consulting engineer on-site: $1000+ per day + travel
• Internal resource on-site: $200-500 per day
Why do things better and faster?
• TroubleshootingTroubleshooting and fixing a badly built network canbuilt network can take months
• Pictures: bad-fi.com
Life Cycle of a Wi-Fi Network
Preparation & Requirements
Continuous
PlanPlanMonitorMonitor
q
Predictive Design
Periodic Check-ups
TroubleshootTroubleshoot ValidateValidate
Pre-Deployment Site survey
Installation and Configuration
Spectrum
Packet analysis
Post-Deployment panalysis Site Survey
Preparations
• Learn Wi-Fi– CWNP: High quality vendor
neutral Wi-Fi expert training
– Blogs (Revolution Wi-Fi, WLAN Pros, Lee Badman, SC-Wi-Fi, NSA Show podcast)
– Vendor-specific courses: Cisco b k hCCNx, Aruba, Ekahau ECSE …
Management Buy-In
• You will need the management to commit to the project…
• … to ensure sufficient– $
– TimeTime
Preparations
• Work with it: Nothing replaces field experience
• Have your tools ready to goy y g– Learn your tools BEFORE going
on-site
Preparations
• Familiarize yourself in advance– Point of contact for complications
– Access to areas
– Advance notification to staff
– Double-check the intended schedule oub e c ec e e ded sc edu eand scope of work
Designing to a budget is designing to a “WLAN failure.
Keith Parsons
Wi-Fi consultant and trainer, industry innovator
Gathering Requirements
• Sit down and talk to people!– Network end users
– IT people Source: Dilbert.com
– Management
Gathering Requirements
• Know exactly what areas need to be covered and surveyed
• Restrictions: Where APs can NOT be placedNOT be placed
Key Requirements
• Coverage areasg– On a map
– ALL of them
• Number of usersNumber of users – Per user group
– Account for growth
• The applications used• The applications used– Per user group
– Affects coverage requirements, and capacityand capacity
“If you fail to plan, you plan to fail.”“Nowhere is that as true as with designing and deploying Wi-Fi networks
Karl Schmidt
Sr. Network Engineer, NEC
Predictive Design
• Accurate scale is everything
• Wall drawing can be fast –or slow Get CAD drawingsor slow. Get CAD drawings.
• Main walls are enough, don’t overdo it.
• Never trust an “Auto Planner”• Never trust an Auto-Planner blindly.
Plan for Capacity
• User groups
• Device types
• Number of users & theirNumber of users & their devices
• Applications r n on each• Applications run on each device
Pre-Deployment Site Surveys
• Purpose: Use a couple of “APs on a stick” on-site to make measurements prior to pdeploying the entire network
• What to measure? Coverage and SNR at the least. Preferably throughput, y g p ,spectrum.
• Use reasonable Tx power (not max or min ))
• Turn back at the edge of desired cell coverage
• Use multiple Wi-Fi adapters to measureUse multiple Wi Fi adapters to measure faster, walk faster
Post-Deployment Site Surveys
• Purpose: Validate the coverage and f f h kperformance of the entire network
• Multiple Wi-Fi adapters make the lki fwalking faster
• Requirements? Every room, or th h?every other enough?
• What to measure? Coverage, SNR, thro ghp t Jitter (VoIP) Spectr mthroughput. Jitter (VoIP). Spectrum.
Without careful planning for voice and on-location site surveys,
channel overlap and roaming problems will result in
“channel overlap and roaming problems will result in
poor voice quality and dropped calls.
Martin Ericson
International Trainer, Ascom Wireless
Trusting a “self-configuring Wi-Fi network” to do it all“is shooting yourself in the foot.
Joeri De Winter
Wireless LAN Consultant, Skyline Networks
Life Cycle of a Wi-Fi Network
• Wi-Fi design is an iterative process
• Work through options and g padapt
• RF is alive all the time: Come• RF is alive all the time: Come back after 6 months and you’ll find it quite differentyou ll find it quite different
Network Health Check
• Some invest in additional i f i Wiinfrastructure to monitor Wi-Fi
• If you don’t perform quick• If you don t, perform quick, periodic health check site survey walks as often as possible (doesn’t take long). Easy to walk, give to expert to analyzeanalyze
Our technical support team demands me to teach one thing to our customers:
Proper site survey and spectrum analysis
“Proper site survey and spectrum analysis.
Many problems come from improper site surveys, or complete lack of it.
Metka Dragos
Senior Technical Trainer, Aerohive Networks
Wrap-Up: Top 3 Speed-ups
Eliminate or minimize the repetitive work.Focus on learning the advanced stuff.
1. Design your wireless LAN carefully. Save time with the use of CAD drawingstime with the use of CAD drawings
2. Test and optimize the network periodically
3 Familiarize yourself with the right tools and3. Familiarize yourself with the right tools and best practices to make periodic check-ups and troubleshooting effectively
Wrap-Up: Top 3 Tips
b1. Get management buy-in
2. Get knowledge and experience
3. Best practices are there for a reason
Let’s look at a few examples
• Quick network plan
• Site survey walk-throughSite survey walk through
• Essentials of analysis
“Always design the network as if you will
take the support calls personally
“take the support calls personally
Darrell Derosia
Wi Fi A hit tWi-Fi Architect
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