7 tips for wireless experts...wireless network design • design your network for 5 ghz in future...

1
#1: Set up proper channels Use Only Channels 1, 6 and 11 on 2.4GHz Use 5 GHz as much as possible Lower 8 channels are best for Voice environments (36 – 64) Enable Dynamic Channel Assignment Enable Dynamic Bandwidth Selection Use the Cisco Radio Resource Management algorithms for auto tuning Don’t use ‘Maximum Power’. #2: Power your AP Do NOT use 100% power Use Cisco Radio Resource Management (RRM)to dynamically set power with max set to 17dBm and min 5dBm Enable Event Driven RRM with Rogue Contribution Keep Rogue Duty cycle to max 80% Create Smaller cells #3 Optimize your wireless network design Design your network for 5 GHz in future If possible take out 2.4 GHz entirely Use ‘Flexible Radio Assignment’ (FRA) in new AP’s Don’t buy ‘Single Radio AP’s’ Don’t buy ‘Single Radio Clients’ Try to migrate Legacy clients as soon as possible, They degrade the quality of your network If you can’t migrate them, give them a separate SSID #4 Placement matters Below obstructions Minimum one meter (3ft) away from obstructions Use correct antennae, only 1 type of antenna Access Points minimum three meter (10ft) away from each other Not too high (after 4 meter (14ft) high follow special implementations guide) Don’t put behind a metal cage Use Outdoor AP’s for Outdoor Coverage.. #5 Implement good wireless security WPA2 is the bare minimum authentication (with CCMP. Don’t use TKIP) WPA2 Personal (PSK) is for...personal networks not business WPA2 Enterprise (802.1X) for businesses Use Role Based Access (RBA) for administration. Use a Wireless Intrusion Preventions (wIPS) solution Use VPN on Public Wireless Connections #6 Choose your benefits wisely Transition to 802.11ac with your normal upgrade cycle Look at “Value Add features” that go on top of Wave 2 technology Industry best Wi-Fi with HDX (high density) featureS New 2800 & 3800 Aps are Wave 2, and add those HDX features Max flexibility and resiliency with Flexible Radio Assignment Dynamic Bandwidth Selection (DBS) Location Based Services with Wi-Fi based angle of arrival Industry leadership with Nbase-T (mGig) Mobility Express for smaller deployments (<100 AP’s) #7 Survey your site carefully Survey only the Channels you will use Walk slow enough for your Scanning period (default w. Ekahau 105 ms) If you want to scan both 2.4 AND 5 GHz in one walk you have to walk Really slow..... Better to do two scan walks. 1x 2.4 GHz & 1x 5 GHz. Even more better, use 3 Adapters 7 Tips for Wireless Experts

Upload: others

Post on 26-Jun-2020

1 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: 7 Tips for Wireless Experts...wireless network design • Design your network for 5 GHz in future • If possible take out 2.4 GHz entirely • Use ‘Flexible Radio Assignment’

#1: Set up proper channels • Use Only Channels 1, 6 and 11 on

2.4GHz • Use 5 GHz as much as possible • Lower 8 channels are best for Voice

environments (36 – 64) • Enable Dynamic Channel

Assignment • Enable Dynamic Bandwidth

Selection • Use the Cisco Radio Resource

Management algorithms for auto tuning

• Don’t use ‘Maximum Power’.

#2: Power your AP • Do NOT use 100% power • Use Cisco Radio Resource

Management (RRM)to dynamically set power with max set to 17dBm and min 5dBm

• Enable Event Driven RRM with Rogue Contribution

• Keep Rogue Duty cycle to max 80% • Create Smaller cells

#3 Optimize your wireless network design • Design your network for 5 GHz in

future • If possible take out 2.4 GHz entirely • Use ‘Flexible Radio

Assignment’ (FRA) in new AP’s • Don’t buy ‘Single Radio AP’s’ • Don’t buy ‘Single Radio Clients’ • Try to migrate Legacy clients as soon

as possible, They degrade the quality of your network If you can’t migrate them, give them a separate SSID

#4 Placement matters • Below obstructions • Minimum one meter (3ft) away from

obstructions • Use correct antennae, only 1 type of

antenna • Access Points minimum three meter

(10ft) away from each other • Not too high (after 4 meter (14ft) • high follow special implementations

guide) • Don’t put behind a metal cage • Use Outdoor AP’s for Outdoor

Coverage..

#5 Implement good wireless security • WPA2 is the bare minimum

authentication (with CCMP. Don’t use TKIP)

• WPA2 Personal (PSK) is for...personal networks not business

• WPA2 Enterprise (802.1X) for businesses

• Use Role Based Access (RBA) for administration.

• Use a Wireless Intrusion Preventions (wIPS) solution

• Use VPN on Public Wireless Connections

#6 Choose your benefits wisely • Transition to 802.11ac with your

normal upgrade cycle • Look at “Value Add features” that go

on top of Wave 2 technology • Industry best Wi-Fi with HDX (high

density) featureS • New 2800 & 3800 Aps are Wave 2,

and add those HDX features • Max flexibility and resiliency with

Flexible Radio Assignment • Dynamic Bandwidth Selection (DBS) • Location Based Services with Wi-Fi

based angle of arrival • Industry leadership with Nbase-T

(mGig) • Mobility Express for smaller

deployments (<100 AP’s)

#7 Survey your site carefully • Survey only the Channels you will

use • Walk slow enough for your Scanning

period (default w. Ekahau 105 ms) • If you want to scan both 2.4 AND 5

GHz in one walk you have to walk Really slow.....

• Better to do two scan walks. 1x 2.4 GHz & 1x 5 GHz.

• Even more better, use 3 Adapters

7 Tips for Wireless Experts