dot1x Authentication Configuration using Radius Server

Hello Everyone,

Switch Model: N2000P
Firmware: 6.6.3.17

I am trying to configure dot1x authentication using the Cloud Radius server. The configuration I am applying is as below but the switch is not even sending request to the radius(Public IP).

Configuration:

1. Enter global configuration mode and define the RADIUS server.
console#configure
console(config)#radius-server host 10.10.10.10
console(config-auth-radius)#name BigRadius
console(config-auth-radius)#primary
console(config-auth-radius)#usage 802.1x
console(config-auth-radius)#exit

console(config)#radius-server key thatsyoursecret-keepitkeepit

3 Enable authentication and globally enable 802.1x client authentication via   RADIUS:
console(config)#authentication enable
console(config)#aaa authentication dot1x default radius
console(config)#dot1x system-auth-control

4. Interface level 802.1x
console(config)#interface te1/0/4
console(config-if-Te1/0/4)#authentication port-control auto
console(config-if-Te1/0/4)#dot1x reauthentication
console(config-if-Te1/0/4)#dot1x timeout tx-period 5
console(config-if-Te1/0/4)#exit

Can anyone help me with some suggestions for the better configuration to be successful in it.

Thanks,

Kavya Sri