lost connection, received deauth:

Dear All,

I m using Mikrotik RB333 at one end with 5GHz and frequency 5825 in station mode no security profile.
Other end i have NanoStation 5 with same setting , work as multipoint AP .

I receive following error in my mikrotik logs :-

lost connection, received deauth: authentication not valid (2)

what is the issue in it , what i have to change and where.

Thanx

http://forum.mikrotik.com/t/wireless-disconnection-messages-explained/11526/1

There’s a sticky in the wireless section that explains error messages.

Thanks Fewi for your reply

i already go through the http://wiki.mikrotik.com/wiki/Manual:Wireless_Debug_Logs
but find nothing.

Thats why i post the problem.

Thanx