ap roaming issue

[Random44F]

Hi All,

I have number of autonomus aps all cisco aironet 1601.

They all advertise same ssid and on different channels.

All of them relay dhcp request to the asa firewall.

issue is when they roam from one ap to another, they loose connectivity .

they can not obtain ip from asa but if you wait or switch off/switch on the wireless card , it will work .

any ideas on what this can be ?

thanks

[Leo Laohoo]

they can not obtain ip from asa but if you wait or switch off/switch on the wireless card , it will work . - 

A number of reasons.  

1.  Because this is autonomous, this mean CleanAir is not enabled so it could because of co-channel interference. 

2.  Lack of cell coverage

3.  Bad or old wireless card firmware