Authenticcation Initiation and Message Exchange

The host initiate authentication by sending an EAPOL-start frame, which prompts the DSLAM to request the host's identity.

When the host supplies its identity, the DSLAM acts as the intermediary, pass EAP frames between the host and the authentication server until authentication succeeds or fails. If the authentication succeeds, the DSLAM port becomes authorized.

The specific exchange of EAP frames depends on the authentication method that is being used. The below fiugre shows a message exchange that is initiated by the host using the One-Time-Password (OTP) authentication method with a RADIUS server.

702

IDL series User Guide