Hi,
This is a case about the auto-calibration doesn't take effect.
Problem Description
After auto-calibration is configured for 5 GHz channels on the AC6005, all APs still work on some channel 149.
Handling Process
Firstly, it is suspected that the auto-calibration function is not enabled or the calibration is not performed in a timely manner.
1) Confirm that the calibration function is enabled.
[AC6605-wlan-view] calibrate enable auto
[AC6605] wlan
[AC6605-wlan-view] rrm-profile name 802.11b
[AC6605-wlan-rrm-prof-802.11b]undo calibrate auto-channel-select disable
2. Perform manually triggers calibration. The problem persists.
<AC6605> system-view
[AC6605] wlan
[AC6605-wlan-view] calibrate manual startup
Warning: The operation may cause business interruption, Continue? [Y/N]:y:
[AC6605]display radio
CH/BW:Channel/Bandwidth
CE:Current EIRP (dBm)
ME:Max EIRP (dBm)
CU:Channel utilization
ST:Status
-----------------------------------------------------------------------
AP ID Name RfID Band Type ST CH/BW CE/ME STA CU
-----------------------------------------------------------------------
0 a 1 5G an11ac on 149/80M 28/28 0 13%
1 b 1 5G an11ac on 149/80M 28/28 7 5%
2 c 1 5G an11ac on 149/80M 28/28 0 17%
3 d 1 5G an11ac on 149/80M 28/28 8 14%
4 E 1 5G an11ac on 149/80M 28/28 2 13%
3. The following configurations are found on the device:
regulatory-domain-profile name default
dca-channel 5g channel-set 149,153,157,161
dca-channel 5g bandwidth 80mhz
After changing the command dca-channel 5g bandwidth 80mhz to dca-channel 5g bandwidth 20mhz, the AP can be adjusted to different channels.
Root Cause
Two neighboring 20 MHz channels are bonded into a 40 MHz channel. One of the two 20 MHz channels is the primary channel, and the other the auxiliary channel.
Two neighboring 40 MHz channels are bonded into an 80 MHz channel. In an 80 MHz channel, one 20 MHz channel is selected as the primary channel. The other 20 MHz channel making up the 40 MHz channel with the primary channel is called the auxiliary 20 MHz channel. The 40 MHz channel not containing the primary channel is called the auxiliary 40 MHz channel.
If DCA-channel 5g channel-set 149,153,157,161 is configured, channel 149 is the primary channel and the channels 149, 152, 157, 161 are the auxiliary channels. Therefore, the automatic adjustment can only be performed to channel 149.
After DCA-channel 5g bandwidth 20mhz is configured, each channel is a primary channel and no auxiliary channel exists because the bandwidth of each channel is 20mhz. Therefore, channels can be automatically calibrated.
Thanks!
