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FTOS Configuration Guide for the C-Series - Force10 Networks

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Figure 473 and Figure 474 show how EAP frames are encapsulated in E<strong>the</strong>rnet and Radius frames.<br />

Figure 473 EAPOL Frame Format<br />

Preamble Start Frame<br />

Delimiter<br />

Destination MAC<br />

(1:80:c2:00:00:03)<br />

Source MAC<br />

(Auth Port MAC)<br />

Protocol Version<br />

Range: 0-4<br />

(1)<br />

Type: 0: EAP Packet Packet<br />

1: EAPOL Start<br />

2: EAPOL Logoff<br />

3: EAPOL Key<br />

4: EAPOL Encapsulated-ASF-Alert<br />

Range: 1-4<br />

Codes: 1: Request<br />

2: Response<br />

3: Success<br />

4: Failure<br />

E<strong>the</strong>rnet Type<br />

(0x888e)<br />

Packet Type<br />

Code<br />

(0-4)<br />

Length<br />

Range: 1-255<br />

Codes: 1: Identity<br />

2: Notification<br />

3: NAK<br />

4: MD-5 Challenge<br />

5: One-Time Challenge<br />

6: Generic Token Card<br />

EAPOL Frame<br />

ID<br />

(Seq Number)<br />

EAP-Method Frame<br />

674 802.1X<br />

Length<br />

EAP-Method<br />

Code<br />

(0-255)<br />

EAP Frame<br />

Padding FCS<br />

Length EAP-Method Data<br />

(Supplicant Requested Credentials)<br />

fnC0032mp

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