Radio Calibration Does Not Take Effect
Symptom
Radio calibration does not take effect.
Possible Causes
- No VAP profile is configured.
- The fixed channel or power mode is configured.
- A WDS profile or Mesh profile is bound to the AP.
- The AP radios are disabled.
- The calibration channel set is incorrectly configured.
- The AP does not detect neighbor AP information.
- The channel is blocked.
Troubleshooting Procedure
- Check whether the AP state is normal on the AC.
<AC> display ap all Total AP information: nor : normal [2] ----------------------------------------------------------------------------------------- ID MAC Name Group IP Type State STA Uptime ----------------------------------------------------------------------------------------- 0 dcd2-fcf6-76a0 area_1 ap-group1 192.168.120.254 AP6010DN-AGN nor 0 4H:49M:11S 1 60de-4474-9640 area_2 ap-group1 192.168.120.253 AP5010DN-AGN nor 0 6H:3M:40S ----------------------------------------------------------------------------------------- Total: 2
Only APs in normal state can perform radio calibration. Ensure that the APs performing radio calibration are in normal state. If the AP state is abnormal, rectify the fault by referring to An AP Fails to Go Online on the AC and An AP Goes Offline Unexpectedly.
- Check whether a VAP profile is configured.
If no VAP profile is configured or the VAP status is not ON, the AP cannot collect neighbor AP information. As a result, radio calibration does not take effect.
- Check whether a VAP profile is configured.
<AC> display ap-group name ap-group1 ----------------------------------------------------------------------------- ... Radio 0 Radio 2.4G profile : default Radio 5G profile : default VAP profile WLAN 1 : wlan-net ... Radio 1 Radio 5G profile : default VAP profile WLAN 1 : wlan-net ... -----------------------------------------------------------------------------
If no VAP profile is configured for the AP group, configure and bind a VAP profile to the AP group.
[AC] wlan [AC-wlan-view] vap-profile name wlan-net [AC-wlan-vap-prof-wlan-net] quit [AC-wlan-view] ap-group name ap-group1 [AC-wlan-ap-group-ap-group1] vap-profile wlan-net wlan 1 radio all
- Check whether the VAP status is ON.
<AC> display vap all WID : WLAN ID ----------------------------------------------------------------------------- AP ID AP name RfID WID BSSID Status Auth type STA SSID ----------------------------------------------------------------------------- 0 area_1 0 1 dcd2-fcf6-76a0 ON Open 0 wlan-net 0 area_1 1 1 dcd2-fcf6-76b0 ON Open 0 wlan-net 1 area_2 0 1 60de-4474-9640 ON Open 0 wlan-net 1 area_2 1 1 60de-4474-9650 ON Open 0 wlan-net ----------------------------------------------------------------------------- Total: 4
If the VAP status is OFF, the VAP service is disabled. Check whether the VAP service is manually disabled or the scheduled VAP auto-off function is enabled.
- Enable the VAP service.
[AC-wlan-view] vap-profile name wlan-net [AC-wlan-vap-prof-wlan-net] undo service-mode disable
- Disable the scheduled VAP auto-off function.
[AC-wlan-view] vap-profile name wlan-net [AC-wlan-vap-prof-wlan-net] undo auto-off service
- Enable the VAP service.
- Check whether a VAP profile is configured.
- Check whether automatic channel selection and automatic transmit power selection are disabled.
If the automatic channel and transmit power selection functions of an AP are disabled, radio calibration cannot adjust the channel or transmit power of the AP.
- In V200R007C20 and earlier versions:
<AC> display rrm-profile name huawei ------------------------------------------------------------ Auto channel select : enable Auto transmit power select : enable ...
If the automatic channel and transmit power selection functions are disabled, enable these functions in the RRM profile bound to the AP.
[AC-wlan-view] rrm-profile name huawei [AC-wlan-rrm-prof-huawei] undo calibrate auto-channel-select disable [AC-wlan-rrm-prof-huawei] undo calibrate auto-txpower-select disable
- In V200R008 and later versions:
<AC> display ap-group name ap-group1 ----------------------------------------------------------------------------- ... Radio 0 ... Auto channel select : enable Auto transmit power select: enable ... Radio 1 ... Auto channel select : enable Auto transmit power select: enable ... -----------------------------------------------------------------------------
If the automatic channel and transmit power selection functions are disabled, enable these functions for the corresponding radio.
[AC-wlan-view] ap-group name ap-group1 [AC-wlan-ap-group-ap-group1] radio 0 [AC-wlan-group-radio-ap-group1/0] undo calibrate auto-channel-select disable //In V200R019C00 and later versions, the command format is undo calibrate auto-channel-select. [AC-wlan-group-radio-ap-group1/0] undo calibrate auto-txpower-select disable //In V200R019C00 and later versions, the command format is undo calibrate auto-txpower-select.
- In V200R007C20 and earlier versions:
- Check whether a WDS profile or Mesh profile is bound to the AP or AP group.
If so, the AP does not support radio calibration.
# Check whether a WDS profile or Mesh profile is bound to the AP or AP group.
<AC> display ap-group name ap-group1 ----------------------------------------------------------------------------- ... Radio 0 ... Mesh profile : WDS profile : ... Radio 1 ... Mesh profile : WDS profile : ... -----------------------------------------------------------------------------
If a WDS profile or Mesh profile is bound to the AP group, delete the WDS profile or Mesh profile.
[AC-wlan-view] ap-group name group1 [AC-wlan-ap-group-group1] radio 0 [AC-wlan-group-radio-group1/0] undo wds-profile test [AC-wlan-group-radio-group1/0] undo mesh-profile test
- Check whether the AP radios are disabled.
If the radios of an AP are disabled, the AP cannot transmit radio signals, and thereby cannot perform radio calibration.
# Check the status of AP radios.
<AC> display radio all CH/BW:Channel/Bandwidth CE:Current EIRP (dBm) ME:Max EIRP (dBm) CU:Channel utilization ST:Status WM:Working Mode (normal/monitor/monitor dual-band-scan/monitor proxy dual-band-scan) ------------------------------------------------------------------------------------ AP ID Name RfID Band Type ST CH/BW CE/ME STA CU WM ------------------------------------------------------------------------------------ 1 60de-4474-9640 0 2.4G bgn on 6/20M 24/24 0 55% normal 1 60de-4474-9640 1 5G an on 56/20M 25/25 0 3% normal ------------------------------------------------------------------------------------ Total:2
If the status of an AP radio is off, the radio is disabled. In this case, enable the radio.
[AC] wlan [AC-wlan-view] ap-id 1 [AC-wlan-ap-1] radio 0 [AC-wlan-radio-1/0] undo radio disable
- Check whether the calibration channel set and calibration bandwidth are correctly configured.
When configuring a radio calibration set, avoid using radar channels.
The channels you configure must be supported by STAs; otherwise, the STAs cannot discover radio signals. For example, when the country code is set to CN, 5 GHz channels 36, 40, 44, 48, 52, 56, 60, and 64 can be configured. However, most STAs do not support these channels currently. If these channels are configured, the STAs cannot discover radio signals. In this case, you can configure 5 GHz channels 149, 153, 157, 161, and 165 that are supported by the STAs.
When configuring the 40 MHz or 80 MHz calibration bandwidth, check whether channels of the corresponding bandwidth exist under the country code. For details, see WLAN Country Codes & Channels Compliance.
To ensure the calibration effect, you are advised to configure at least three calibration channels.
To prevent signal interference, ensure that neighbor APs work in non-overlapping channels. The 2.4 GHz frequency band has overlapping channels. When configuring calibration channels, you are advised to configure a non-overlapping calibration channel set containing channels 1, 6, and 11 or containing channels 1, 5, 9, and 13.
- # Check whether the calibration channel set is correctly configured.
<AC> display regulatory-domain-profile name default ------------------------------------------------------------ Profile name : default Country code : CN 2.4G dca channel-set : 1,6,11 5G dca bandwidth : 20mhz 5G dca channel-set : 149,153,157,161,165 Wideband switch : enable Channel load mode : outdoor ------------------------------------------------------------
If the calibration channel set is incorrectly configured, run the dca-channel channel-set command in the regulatory domain profile view to re-configure a calibration channel set.
- If the 40 MHz or 80 MHz calibration bandwidth is configured, ensure that the configured calibration channel set contains channels in a valid 40 MHz or 80 MHz channel set.
For example, if the 40 MHz calibration bandwidth is configured using the dca-channel 5g bandwidth 40mhz command, the valid 40 MHz calibration channel sets are 36-40, 44-48, 52-56, and so on. The calibration channel set configured using the dca-channel 5g channel-set command must contain all channels in a 40 MHz calibration channel set.
The following shows an incorrect configuration example:
[AC-wlan-regulate-domain-df] display this # dca-channel 5g channel-set 36,44,52 dca-channel 5g bandwidth 40mhz # return
The following shows a correct configuration example:
[AC-wlan-regulate-domain-df] display this # dca-channel 5g channel-set 36,40,44,48,52,56 dca-channel 5g bandwidth 40mhz # return
- In outdoor scenarios, outdoor APs may not support low frequency channels according to WLAN Country Code & Channels Compliance. Therefore, you need to configure calibration channel set containing channels supported by outdoor APs based on WLAN Country Code & Channels Compliance.
- If the calibration bandwidth is set to 40 MHz or 80 MHz, the AP's working bandwidth takes effect only after radio calibration is triggered the next time.
- # Check whether the calibration channel set is correctly configured.
- Check whether the AP has detected neighbor AP information.
# Run the display ap neighbor command to check whether the AP has detected neighbor AP information.
<AC> display ap neighbor ap-id 1 Radio: Radio ID of AP In control AP: ------------------------------------------------------------------------------ Radio AP ID AP name Channel Received RSSI(dbm) Path loss(db) ------------------------------------------------------------------------------ 0 0 area_1 1 -38 56 ------------------------------------------------------------------------------ Total: 1 ...
If the AP has not detected neighbor AP information, perform the following steps:
- Check whether there are obstacles between APs, which may cause signal detection failures. If there are obstacles between APs, perform WLAN planning and deployment again.
- Check whether the radio signals of the AP are normal. If no, rectify the fault by referring to A STA Cannot Detect Wi-Fi Signals.
- If the AP fails to be calibrated to a channel, check whether the channel is blocked.
Typically, blocked channels include detected radar channels and the channels with high noise floor values that are detected by the noise floor policy configured using the calibrate policy noise-floor command.
- In V200R010 and earlier versions, run the display wlan wrfm calibrate detail-info command in the diagnostic view to check for blocked channels.
<AC> system-view [AC] diagnose [AC-diagnose] display wlan wrfm calibrate detail-info ap-id 0 radio 0 Total interference on the current radio(dBm): -95 In control AP: ------------------------------------------------------------------------------ AP ID AP Name Channel Probe-recevied-rssi Other-frame-received-rssi ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Total: 0 Uncontrol AP: ------------------------------------------------------------------------------ AP MAC Scan-channel Frame-received-rssi ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ Total: 0 Avoid:52,56 //The Avoid field displays the currently blocked channels.
- In V200R019C00 and later versions, run the display wlan wrfm channel-set command in the diagnostic view to check for blocked channels.
<AC> system-view [AC] diagnose [AC-diagnose] display wlan wrfm channel-set ap-id 5 radio 1 DCA Channel BandWidth: 40mhz Configurable Channel DCA Channel Flag Channel Availability Reason Time Radar detected num 149 Y Y - - 0 153 Y Y - - 0 157 Y Y - - 0 161 Y Y - - 0 165 N Y - - 0 //The channel is blocked if the value under Channel Availability is N.
- In V200R010 and earlier versions, run the display wlan wrfm calibrate detail-info command in the diagnostic view to check for blocked channels.
- Check whether the current radio calibration is complete.
Global radio calibration takes a period of time. If radio calibration does not take effect, check whether the current radio calibration is complete.
# Run the display wlan wrfm calibrate status command in the diagnostic view to check the current radio calibration status.
<AC> system-view [AC] diagnose [AC-diagnose] display wlan wrfm calibrate status RRM calibrate status : ---------------------------------------------------------------------- Calibrate mode : manual Calibrate phase(2.4g) : deploy Calibrate phase(5g) : deploy Calibrate sensitivity : middle Calibrate policy : - Ap online delay time(min) : 5 Ap offline delay time(min) : 5 Calibrate period cycle(min) : 60 Calibrate prerun cycle(min) : 5 Total DCA channel(2.4g) : 1 6 11 Total DCA channel( 5g) : 149 153 157 161 165 Calibrate prerun stage(2.4g, 6 times total) : - Calibrate prerun stage( 5g, 6 times total) : - ----------------------------------------------------------------------
The Calibrate phase parameter has the following values:
- deploy: Radio calibration is in deployment phase.
- prerun: Global radio calibration is in test run state.
- period: Periodic radio calibration is performed.
- stop: Radio calibration stops.
If the value of Calibrate phase is not prerun, the current global calibration is complete.