AP1262 disconnecting clients regularly

Question

I have an AP 1262 that is often dropping the connection. It does it about every 20 minutes and only lasts for a few seconds but it is enough to disrupt the entire office. I've got it setup for WPA2/AES after changing it from WPA/TKIP and it has no effect. I'm using the 6.5dbi antenna and coverage is decent. One office (on the far end) has 3 out of 5 bars and it gets dropped just as much as the ones with 5 out of 5 bars. I'm out of ideas. The office backs up to a small airport so I'm hoping it's not an interference issue because there won't be any way to resolve that issue.
As a side note, they have a 2.4ghz wireless phone in the office that is also dropping calls. I'm not sure if they are connected because I haven't noticed if they are dropping at the same time. The device is less than 6 months old so it should have the latest firmware on it. I programmed a new AP1262 and installed it yesterday with a new antenna and put it in place and it's doing the same thing. I'd really appreciate any ideas/help on this one. Thanks!

Answer 1

As per the given config, you have not enable 5GHz radio, it is shutdown (shown in red line). Please enable it & advertise SSID on that radio.(show in blue text)
interface Dot11Radio1
no ip address
no ip route-cache
shutdown
encryption mode ciphers aes-ccm
antenna gain 0
dfs band 3 block
channel dfs
station-role root
ssid OZ-NASHVILLE
Also noticed some unwanted commands on your config, your Gig 0 interface config with an IP, which is not right
interface GigabitEthernet0
ip address 10.0.0.1 255.255.255.0
no ip route-cache
duplex auto
speed auto
no keepalive
bridge-group 1
Also in 2.4GHz band you have statically select the channel (which is not good if that channel is congested)
interface Dot11Radio0
encryption mode ciphers aes-ccm
ssid OZ-NASHVILLE
antenna gain 7
speed  basic-1.0 basic-2.0 basic-5.5 basic-11.0 basic-6.0 basic-9.0 basic-12.0
basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0 m0. m1. m2. m3. m4. m5. m
6. m7. m8. m9. m10. m11. m12. m13. m14. m15.
channel 2437
station-role root
Also under SSID configuration, I would get rid of "infrastructure-ssid optional" command if you simply have normal wireless clients
dot11 ssid OZ-NASHVILLE
   authentication open
   authentication key-management wpa version 2
   guest-mode
   infrastructure-ssid optional
   wpa-psk ascii 7 something_in_hex
In summary I preferred you do  a clean configuration (IMPORTANT:You should have console access to this ap if you erasing the config like this) by erasing the current config & put a configuration like below. Type the your wireless access password instead of in the below configuration.
AP#erase startup-config
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
[OK]
Erase of nvram: complete
AP#reload
System configuration has been modified. Save? [yes/no]: no
Proceed with reload? [confirm]
dot11 ssid OZ-NASHVILLE
   authentication open
   authentication key-management wpa version 2
   guest-mode
   wpa-psk ascii
interface Dot11Radio0
encryption mode ciphers aes-ccm
ssid OZ-NASHVILLE
no shutdown
interface Dot11Radio1
encryption mode ciphers aes-ccm
ssid OZ-NASHVILLE
no shutdown
interface BVI1
ip address 192.168.88.200 255.255.255.0
ip default-gateway 192.168.88.1
Once you have clean up the configuration, you can disable radio 0 & measure the stability of 5GHz (radio 1).  Do a test like that & let us know how it goes.
HTH
Rasika
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