Medium Access Control (MAC) and Physical Layer (PHY) - CISE

4-June-07 P1901_PRO_016_r0
The format of this EAP-Response/Identity packet to be encapsulated in the RADIUS Access-Request is the already
indicated for Messages C and D but the Packet Body is the following:
Packet Body
Description
Nr. Of
octets
Contents
Code 1 Response (0x02)
Identifier 1
Requests must modify the Identifier
Responses must match them
Length in octets 2 0x000C
Type 1 0x01 (Identity)
Value size 1 0x06
Value 6 MAC Address of the supplicant
Table 60: Packet Body Format for EAP-Response/Identity packet fro messages C and D
The Response to the previous message by the AS is an “Access-Challenge/EAP” packet which the authenticator
will convert into Message C for transmission to the Supplicant just decapsulating it.
Message D (EAP-Response/Challenge) shall be encapsulated by the Authenticator into a RADIUS Access-
Request/EAP.
And the response to the previous message will be a “Radius Access-Accept (or Reject)/EAP” packet which the
authenticator will convert into Message E for transmission to the Supplicant by forming an IEEE P1901 “Access
Protocol Packet” as indicated in section 9.1.3, which has also the possibility to signal “Failed” besides Accept or
Reject. This would happen in case of failure of the dialog between the Authenticator and the Authentication Server.
The Format of the RADIUS packet encapsulating an EAP message is the following [RFC2865]:
Submission page 289 UPA-OPERA