testing BSP applications --URL

Hi All,

i have maintained the icm/hostname .I tried with host name as well as IP.

When i try to test some BSP application it gives the error for ....FQDN...

( http://192.168.1.2:8020/sap/bsp..)

( http://sapserver:8020/sap/bsp..)

The same url if i replace the host name with 'localhost' it works fine?( http://localhost:8020/sap/bsp..) and try from the server it works fine.

Is there any other settings which needs to be maintained?

Thanks,

Dev