Packet Formats - HP 6125XLG Configuration Manual

Packet formats

EAP packet format
Figure 23 shows the EAP packet format.
Figure 23 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
•
Data 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 24 shows the EAPOL packet format.
Figure 24 EAPOL packet format
0
Protocol version
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.
Figure 25 Types of EAPOL packets
Value
0x00
0x01
7
PAE Ethernet type
Type
Length
Packet body
Type
EAP-Packet
EAPOL-Start
15
2
4
6
N
Figure 25 lists the types of EAPOL packets supported by HP
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.
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