After Implementing an autonomous AP 1200 series and making the basic
configuration, I ran Aironet Desktop Utility from my laptop to see the
I noticed that SNR (Signal To Noise Ratio) was decreasing suddenly
from 50 db to 12 db then after 10 sec it increased to 30 db then
decreasing to 8 db and so on..
I was standing in my place , I didn't move my laptop , and the AP was
fixed in the wall with 2 diversity small Dipole antennas, I tried to
change the AP many times with another Aironet 1200 but the problem was
still exist !!!!!
Finally I replaced my Cisco AP with D-link one and every think was OK
There wasn't SNR flapping, and the coverage area was much better,
Because I'm sure that Cisco product is better than D-link I need
your help to solve this problem.