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Fat AP and Cloud AP V200R010C00 Command Reference

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
display ap radio-environment

display ap radio-environment

Function

The display ap radio-environment command displays air interface environment information about AP radios.

Format

display ap radio-environment [ radio radio-id ]

Parameters

Parameter

Description

Value

radio radio-id

Displays air interface environment information about the AP radio with a specified ID.

The radio ID must exist.

Views

All views

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When WLAN access experience is poor, you can run this command to view air interface environment information and Wi-Fi interference sources. The interference can be determined based on the noise floor, signal to interference plus noise ratio (SINR), co-channel interference, and adjacent-channel interference. After this command is executed, radio scanning of the AP is automatically enabled, and the AP starts to scan the air interface environment of radios. You can run this command again to view air interface environment scanning results.

Precautions

When you run this command for the first time, no air interface environment scanning result is displayed. To view air interface environment scanning results, run this command again.

After AP radio scanning is enabled using this command, the air interface performance of an AP is affected. If this command is not executed again after five minutes, AP radio scanning is automatically disabled.

If the radio radio-id parameter is not specified, air interface environment information about all radios of the AP is displayed.

In the scanning result, the channel utilization, co-channel interference, and adjacent-channel interference are calculated with the impact of non-Wi-Fi interference. However, non-Wi-Fi interference devices are not displayed in the interference source list.

Example

# Display air interface environment information about radio 0 of AP 1.
<Huawei> display ap radio-environment radio 0
Warning: This operation will enable scanning for the specified radio, affecting AP's air interface performance. Scanning will be aut
omatically disabled 5 minutes after you run this command. Continue? [Y/N]y 
Info: This operation may take a few seconds. Please wait for a moment.done.
p:            permit
i:            interference
Ch:           Channel
CU:           Channel Utility
NF:           Noise Floor
CommIf:       Common-Channel Interference
AdjaceIf:     Adjacent-Channel Interference
SINR:         Signal to Interference and Noise Ratio 
#AP:          Number of APs detected
Radio:        0
ScanChannel:  1
WorkChannel:  1
ScanCycle:    1
---------------------------------------------------------------------------
Ch  NF   CU(%) CommIf(%) AdjaceIf(%) SINR      #APs
---------------------------------------------------------------------------
1   -105 75    19        -           245       57 
---------------------------------------------------------------------------
Total: 1
---------------------------------------------------------------------------
Ch    MAC            Type  RSSI  SSID
---------------------------------------------------------------------------
1     c88d-833a-8d41 i     -65   xw9-2g-tunnel 
------------------------------------------------
Total: 1
Table 13-1  Description of the display ap radio-environment [ radio radio-id ] command output

Item

Description

Radio

Radio on which the air interface environment is scanned.

ScanChannel

Scanning channel.

WorkChannel

Working channel of the AP.

ScanCycle

Scanning count.

Ch

Channel that has scanned a device.

NF

Noise floor.

CU(%)

Channel utilization.

CommIf(%)

Co-channel interference.

AdjaceIf(%)

Adjacent-channel interference.

#APs

Number of scanned APs.

SINR

Signal to interference plus noise ratio (SINR).

MAC

MAC address of the scanned device.

Type

Type of the scanned interference device.
  • i: WIDS device
  • p: Non-WIDS device

RSSI

RSSI of the scanned device.

SSID

SSID to which the scanned device is connected.

If an AP detects that a channel has a high channel utilization (higher than 80%) or high co-channel interference (higher than 50%), another Wi-Fi device is using this channel and affects the local AP. In this case, it is recommended that the AP channel be switched using radio calibration or other methods.
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Updated: 2019-11-21

Document ID: EDOC1100064352

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