How do I view debugging information

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In versions earlier than V200R005C00, run the debugging wlan wcwp display debug-info-record type type-id from start-value to end-value command in the system view.

In V200R005C00 and later version, run the display wlan debuginfo type type-id [ from start-value to end-value | value ] command in the diagnostic view.

Other related questions:
How do I view the system information
For details, see Maintenance > Viewing the System Information in the eSpace IAD Product Documentation.

Displaying debugging information on the SRG&USG2000&5000&6000 series
By default, the method of querying debugging information on the firewall is as follows: 1. Run the terminal monitor command to enable the information display function of the terminal. 2. Run the terminal debugging command to enable the debugging information display function of the terminal. For details, see Reference > Debugging Reference > Outputting Debugging Information in the corresponding product documentation.

How do I exit the debug mode of the VPC600?
Exit the debug mode of the VPC600 as follows: Press the delete or hang-up button for four times within 1 second.

How to configure a switch to send debugging information to the log server
To configure a switch to send debugging information to the log server, run the following commands in the system view. [HUAWEI] info-center source default channel 2 debug state on [HUAWEI] info-center loghost x.x.x.x By default, a switch sends only logs and traps to the log server.

How to detect interference on WLAN networks
You can use Wirelessmon, NetStumbler, or InSSIDer (downloaded for free on the Internet) to check whether there is strong co-channel or adjacent-channel interference near the AP. In general, the interference signal strength should be lower than �?0 dBm. If multiple co-channel or adjacent-channel interference signals exist and the strength is strong, perform network optimization to prevent channel conflicts. If interference sources cannot be determined using a scanning tool, - Check whether wireless devices such as Bluetooth devices, infrared devices, and microwave ovens exist, because non-WLAN devices may cause severe interference to WLAN networks. - Use the interference detection function to further determine the interference source. Radio channels are often affected by the radio environment, and the service quality is therefore degraded. Interference detection allows APs to send alarms to an AC when co-channel, adjacent-channel, or STA interference exceeds the alarm threshold. Interference detection can detect AP co-channel interference, AP adjacent-channel interference, and STA interference. AP co-channel interference: Two APs working at the same frequency band interfere with each other. For example, on a large-scale WLAN (a university campus network), different APs often use work in the same channel. When coverage areas of the APs overlap, co-channel interference exists, degrading network performance. AP adjacent-channel interference: Two APs with different center frequencies have overlapping areas, resulting in adjacent-channel interference. Therefore, if APs are placed too close to each other or they have strong signals, bigger noise will be produced, degrading network performance. STA interference: If there are many STAs that are managed by other APs around an AP, services of the STAs managed by the local AP may be affected. The following are alarms for co-channel interference and STA interference. V200R005C10: WLAN/4/AP_COMMON_FREQUENCY_DISTURB: OID [oid] The co-channel interference exceeds the alarm threshold. (APID=[INTEGER], APID=[INTEGER], RadioID=[INTEGER], APMAC=[OPAQUE], APChannel=[INTEGER], BssId=[OPAQUE], RSSI threshold percent=[INTEGER])//AP_COMMON_FREQUENCY_DISTURB indicates that co-channel interference exists. WLAN/4/STATION_DISTURB: OID [oid] Jam of station is detected notify.(APID=[INTEGER], APID=[INTEGER], RadioID=[INTEGER], APMAC=[OPAQUE], APChannel=[INTEGER], StatMACList=[STRING])//STATION_DISTURB indicates that STA interference exists. V200R006: WLAN/4/AP_COMMON_FREQUENCY_DISTURB: OID [oid] The co-channel interference exceeds the alarm threshold.(APMAC=[OPAQUE], RadioID=[INTEGER], ApName=[OCTET], APChannel=[INTEGER], BssId=[OPAQUE], RSSI threshold percent=[INTEGER]%, APID=[INTEGER])//AP_COMMON_FREQUENCY_DISTURB indicates that co-channel interference exists. WLAN/4/STATION_DISTURB: OID [oid] Jam of station is detected notify.(APMAC=[OPAQUE], RadioID=[INTEGER], ApName=[OCTET], APChannel=[INTEGER], StatMACList=[STRING], APID=[INTEGER])//STATION_DISTURB indicates that STA interference exists.

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