cisco无线AP无故断线（removing the client）

ERROR 报错:
Sep 27 00:56:49.492: %DOT11-6-ASSOC: Interface Dot11Radio0, Station  XXXX.XXXX.db6c Associated KEY_MGMT[WPA PSK]
Sep 27 00:58:02.415: %DOT11-4-MAXRETRIES: Packet to client XXXX.XXXX.db6c reached max retries, removing the client

Solution 对策:
(config)#dot11 activity-timeout client default 120
菜单操作：ASSOCIATION--Activity Timeout--Client Station--120
网上看到是这么操作，但是实际测试中。