Issue Description
speed issue: Internet main link speed is 275 MBPS and on wifi getting only 54 MBPS max when no user connected on wifi
Handling Process
WLAN speed depends on several factors as below:
- Factors for maximum theoretical speed:
Selected band (2.4 G or 5 G)
Number for supported antennas on both STA (device) and AP
Wireless modulation type
Channel bandwidth for 5G
Used Standard (802.11ac/b/g/n/a)
- Factors for Actual speed
Power of Transmitted signal from both STA (device) and AP
Obstacles between both device and AP
Non Wifi signal noise interference
Wifi co-channel interference “which has been fixed in the below activity”
Channel utilization (number of devices connected to the same AP, traffic utilized by each device)
- End to end actual speed
Internet link capacity
Uplinks starting from AP, Edge Switch, core Switch
After checking the sent diagnostic, kindly find below the issue findings:
The configured channel set for 2.4 WLAN band causing interference between APs as it uses all channels including coherent channels
So kindly avail a downtime for changing these configured channel set and re-calibrate as below:
[AC]wlan
[AC-wlan-view]regulatory-domain-profile name Arcadia
[AC-regulate-domain-Arcadia] dca-channel 2.4g channel-set 1,6,11
[AC-regulate-domain-Arcadia] dca-channel 2.4g channel-set 1,5,9,13 //incase of high density service
And then start manual calibration
[AC-wlan-view] calibrate enable manual
[AC-wlan-view] calibrate manual startup
Warning: The operation may cause business interruption, continue?[y/n]:y
Root Cause
wrong channel set was used for 2.4 GHz
best practise WLAN calibration and parameters need to be configured
Solution
Channel, power optimization | WLAN： |
RTS、CTS | radio-2g-profile: |
beacon cycle | radio-2g/5g-profile： |
short GI | radio-2g/5g-profile: |
Reduce the impact of downlink multicast/broadcast on airside performance on the wired side | radio-2g/5g-profile: |
Reduce the impact of user-side uplink multicast/broadcast on air interface performance | traffic-profile： |
