How do I view information about the AP with which a STA associates

5

To display information about the AP with which a STA associates, run the following command:



display access-user mac-address x-x-x

The following information including the AP ID is displayed:



Basic:

User ID : 365

User name : e005c5fab829

Domain-name : default

User MAC : e005-c5fa-b829 //MAC address of the user

User IP address : 192.168.130.254 //IP address of the user

User access Interface : Wlan-Dbss1:0

QinQVlan/UserVlan : 0/130 //User VLAN

User access time : 2013/03/06 19:52:29

User accounting session ID : AC66050000000000013066b6c7000365

User access type : WEB

Terminal Device Type : Data Terminal

AP ID : 0 //ID of the connected AP

AP name : ap-0

Radio ID : 0 //Access frequency band: 0 indicates 2.4G, and 1 indicates 5G.

AP MAC : 0046-4b74-68c0 //AP mac

SSID : test //SSID name

Online time : 59(s)

Other related questions:
What STA information can be displayed on a WLAN device
1. Number of STAs associated with an AP For V200R005, run the display station assoc-num command. For V200R006, run the display station ap-id xx command. 2. STA information For V200R005, run the display station assoc-info sta sta-mac command. For V200R006, run the display station sta-mac sta-mac command. The display contents vary depending on versions. The following uses V200R005C10 as an example: display station assoc-info sta d420-6df4-f37e Station mac-address : d420-6df4-f37e //STA mac Station ip-address : 0.0.0.0 //STA IP Station gateway : 0.0.0.0 Associated SSID : jsldoc //SSID Station online time(ddd:hh:mm:ss) : 000:00:04:20 //Online time The upstream SNR(dB) : 30.0 The upstream aggregate receive power(dBm) : -79.0 Station connect rate(Mbps) : 23 //Rate Station connect channel : 1 //Channel Station inactivity time(ddd:hh:mm:ss) : 000:00:00:00 ...... Station's RSSI(dBm) : -66 //Single strength Station's Noise(dBm) : -109 Station's radio mode : 11b //Network type Station's AP ID : 6 //AP ID (supported only by V200R005C00) Station's Radio ID : 0 //0 indicates 2.4G, and 1 indicates 5G (supported only by V200R005C00). Station's Authentication Method : OPEN Station's Cipher Type : NO CIPHER Station's User Name : d4206df4f37e Station's Vlan ID : 28 Station's Channel Band-width : 20MHz Station's asso BSSID : dcd2-fc9a-2110 Station's state : Asso with auth Station's Qos Mode : NULL Station's HT Mode : - Station's MCS value : 0 Station's NSS value : 0 Station's Short GI : support Station's roam state : No

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.

How to isolate STAs associated with the same SSID of an AP
Huawei APs support local Layer 2 isolation. After Layer 2 isolation is enabled, local STAs cannot communicate at Layer 2, and data can only be transmitted between uplink ports and VAP ports. To enable Layer 2 isolation, configure it on an AC.

STAs are associated with other APs in multi-AP scenarios
In multi-AP scenarios, STAs may be associated with other APs when a long Beacon frame transmission interval is set. STAs obtain information about peripheral WLANs in either of the following ways: - Passive scan: STAs scan Beacon frames sent by surrounding APs to obtain WLAN information. - Active scan: STAs actively send Probe Request frames and receive Probe Response frames to obtain wireless signals. STA can actively or passively scan surrounding WLANs. When a STA passively scans WLANs and APs are densely deployed, the STA can receive Beacon frames from another AP but not the nearest AP, and perform association.

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