ACS5.2 with Radius to RSA token server

[p21]

I have a test lab with the eval version of ACS5.2. I am running 802.1x on my switch to the ACS usinf radius and want to use my RSA token server to authenticate my users. I have setup my RSA server under "Radius Identiny Servers" in the external identity stores section of the ACS5.2. I have only selected this RSA server in access policies -> identity. When I plug in my 802.1x enabled laptop into the switch I can see the packets going to my ACS but I cannot see any communication from my ACS to the RSA server. And the error I get in the ACS is 22056 Subject not found in the applicable identity store(s). . It works fine with AD. Any reason why the ACS is not talking to the RSA token server?

[Javier Henderson]

It looks like the RSA token server is not one of the identity stores used by the authentication policies you set up, I would start troubleshooting by looking at them and see what identity store or identity store sequence they are using.