Hi All, I am using freeradius-2.2.0 and configure it as EAP authentication server. I met some problem of the EAP authentication. Could you help take a look? Thanks in advance. The phenomenon I encounter in an EAP-SIM exchange is as below, peer denotes the client, and AAA denotes the freeradius. 1. peer-->AAA, with EAP-response (id=0) – in response to EAP-identity 2.AAA-->peer, with EAP-request (id=119) 3.peer-->AAA, with EAP-response(id=119) 4.AAA-->peer, with EAP-request (id=120) 5.peer-->AAA, with EAP-response(id=120) 6. AAA-->peer, Access-Accept, with EAP-success (id=121) EAP-success with id that is different from the one in message #5. Should the client regards the authentication as successful? I found some client did not do in this way and re-send the message 5 (and then AAA replies with access reject), and some client do regard it as success I test with some other AAA server and some indeed do not increase the message id in the EAP-success, and in this case the authentication passed. What’s the standard way then? Thanks very much for the kind help! Thanks and regards, Zhen