EAP Peer                      Authenticator    EAP Server
  |                                   |              |
  |<----------- EAP-Request/Identity -|              |
  |                                                  |
  |                                                  |
  |------------ EAP-Response/Identity -------------->|
  |      (NAI=noob@eap-noob.arpa)                    |
  |                                                  |
  |                                                  |
  |<----------- EAP-Request/EAP-NOOB ----------------|
  |      (Type=1)                                    |
  |                                                  |
  |                                                  |
  |------------ EAP-Response/EAP-NOOB -------------->|
  |      (Type=1,[PeerId],PeerState=1)               |
  |                                                  |
  |  continuing with exchange-specific messages...   |