Radius Issue, No response from server

Hello, I have deployed radius server + daloradius + MySQL in centos 6 and all configuration is done perfectly. I have added HP ProCurve switch 3400 CL as my NAS for sending authentication requests. The scenarios is this: the server is responding and accepting the packets locally but when I try to authenticate through the HP ProCurve switch the server does not respond. I have also stopped the iptables services still radius server is not listening and during debug we found that the request is not even reaching radius server and moreover I am not getting any error message at all. I will be grateful if anybody can help me out to overcome this problem. Thanks and regards Rishabh.