Viavi OneExpert DSL ONX-580, Руководство пользователя

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Chapter 16 Appendix
OneExpert DSL User's Guide
22052280, Rev. 015 April 2019 278
WiFi Advisor
The following table provides some typical problems and resolutions.
Problem Resolution
Signal strength and coverage
problems
– Attenuation with distance and
materials in the home
– 5GHz has shorter reach than
2.4GHz
Look for -35 to -70 dBm RSSI and >20 dB SNR.
802.11 interference sources
– Co-channel interference (forces
your AP to share the channel)
– Adjacent channel interference
(looks like noise to your AP)
Look for < 4 co-channel interferers and < 3
adjacent channel.
Non 802.11 Interference sources
– Microwaves, AV transmitters,
cordless phones, baby monitors,
etc.
Observe spectrum for interferers in the channel
of interest.
High channel utilization
– The more APs in the channel, the
higher potential utilization
– High utilization, low noise = high
– 802.11 traffic on the channel
– High utilization, high noise =
potential non-802.11 interferer
Look for <35% utili low noise.
802.11 a/b/g devices on your network
– Slow a/b/g PHY rates occupy the
channel longer than modern PHY
rates for the same amount of
information transfer.
– Old security types (WEP/WEPA1)
limit connection to lower 802.11
rates
Detect and advise replacement of old gear.