Authenticate EX4300 with Cisco ACS server

Hello Experts,

I'm  a newbie to Juniper!

I have a got a couple of EX4300 which I am trying to authenticate against a Cisco ACS server using Radius. I see  that authentication requests are reaching to the ACS and ACS reports show that the authentication request is permitted by ACS. But still I am not able to login to Juniper device. However, I am still able to login with the local creds that I defined in Juniper device.

Here is the relevant config:

User@EX4300-2> show configuration system radius-server 
10.10.11.68 {
    secret "xxxxxxxxxx"; ## SECRET-DATA
    source-address 10.10.1.100;
}

Any help with this would be appreciated!