Troubleshooting: STA Roaming Errors Occur

Related Concepts

• Intra-AC roaming: A STA roams from one AP to another AP under the same AC.
• Inter-AC roaming: A STA roams from one AP to another AP under a different AC.
• Reassociation and roaming: Reassociation refers to reassociate a disconnected STA with an AP; service interruptions occur during this process. During roaming, STAs remain connected, so service are not interrupted.
• A STA determines whether to roam. It determines whether to associate with another AP based on signal strength.

Viewing the Roaming Track

• Procedure in the web system:

  Choose Monitoring > User > User Statistics > User List, and select a user to view the roaming track.

• Procedure on the CLI:

  Command for checking whether a STA roams and the number of roaming times:

  [AC6605-wlan-vap-prof-default] display station roam-track sta-mac f06b-ca63-313d  
   Access SSID:Huawei-Wlan  
   Rx/Tx: link receive rate/link transmit rate(Mbps)  
   ------------------------------------------------------------------------------  
   L2/L3           AC IP                  AP name              Radio ID  
   BSSID           TIME                   In Rx/Tx  RSSI       Out Rx/Tx RSSI  
   ------------------------------------------------------------------------------  
   --              192.168.10.3           dcd2-fcf4-6600       0  
   dcd2-fcf4-6600  2015/12/03 21:09:33    54/54     -48        44/51       -59  
   L3              192.168.10.4           ap-10                0  
   dcd2-fcf4-6760  2015/12/03 20:45:50    65/65     -45        -/-         -  
   ------------------------------------------------------------------------------  
   Number of roam track: 1

  An online record is generated when a STA goes online, and a track is added for each roaming.

Roaming Conditions

• The SSIDs are the same in the VAP profiles before and after roaming.
• The security policies are the same in the VAP profiles before and after roaming.
• The authentication information is the same in the VAP profiles before and after roaming.

If roaming faults occur, check the preceding information in VAP profiles.