HP 5500 HI Series Configuration Manual page 79

Figure 21 EAP packet format
• Code—Type of the EAP packet. Options include Request (1), Response (2), Success (3), or Failure
(4).
Identifier—Used for matching Responses with Requests.
•
Length—Length (in bytes) of the EAP packet. The EAP packet length is the sum of the Code, Identifier,
•
Length, and Data fields.
Data—Content of the EAP packet. This field appears only in a Request or Response EAP packet. The
•
field comprises the request type (or the response type) and the type data. Type 1 (Identify) and type
4 (MD5-challenge) are two examples for the type field.
EAPOL packet format
Figure 22 shows the EAPOL packet format.
Figure 22 EAPOL packet format
PAE Ethernet type—Protocol type. It takes the value 0x888E for EAPOL.
•
Protocol version—The EAPOL protocol version used by the EAPOL packet sender.
•
Type—Type of the EAPOL packet.
•
implementation of 802.1X.
Table 5 EAPOL packet types
Value
0x00
0x01
0x02
Length—Data length in bytes, or length of the Packet body. If packet type is EAPOL-Start or
•
EAPOL-Logoff, this field is set to 0, and no Packet body field follows.
Table 5 lists the types of EAPOL packets supported by HP
Type
EAP-Packet
EAPOL-Start
EAPOL-Logoff
66
Description
The client and the network access device uses
EAP-Packets to transport authentication information.
The client sends an EAPOL-Start message to initiate
802.1X authentication to the network access device.
The client sends an EAPOL-Logoff message to tell the
network access device that it is logging off.