Packet Type Type

What kind of EAPOL packet this is.

Reading a capture

The field that selects the next bundle down, the same way EtherType did two lanes up. Every frame of a four-way handshake is type 3.

Values

Value	Meaning
0	EAP-Packet
1	EAPOL-Start
2	EAPOL-Logoff
3	EAPOL-Key

Bit values written MSB first, matching network byte order.

Where it sits

EAPOL PDU > Packet Type

• Open in the explorer — Four-way handshake message 1
• Open in the explorer — Four-way handshake message 2
• Open in the explorer — Four-way handshake message 3
• Open in the explorer — Four-way handshake message 4

Accuracy

Clause

IEEE 802.1X-2020 §11.3.2

Verified

Not verified against the standard. Treat this as a claim, not a fact.