>  Please let me know .. Is it compulsory to configure EAP/PEAP .  
 
No. But it is enabled in freeradius by default - ie. it "just works".
 
> Or it will work with EAP -md5 (that is default configuration , without any change after installation ...!!) also ..??
That is enabled by default as well. BTW EAP-MD5 is default for wired Windows clients.

Ivan Kalik

Kalik Informatika ISP