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

4-June-07 P1901_PRO_016_r0
12.2.7.6 Working with RADIUS Authentication
When RADIUS authentication is active, the repeater or HE sends an Access-Request message to the RADIUS
server, which checks if the MAC address corresponds to one that was accepted and, in that case, it responds with an
Access-Accept message containing the profile number. Otherwise, the server replies with a RADIUS Access-
Reject message and the authentication fails. If the authentication fails the slave will not join the BPL network.
Once authentication is achieved, the slave is authorized and a QoS and VLAN/OVLAN configuration takes place
between the master and slave. The master uses the profile number to get these parameters. The slave uses the
parameters inside the downloaded auto-configuration file. The slave node downloads the file during its autoconfiguration
process, after the RADIUS request on the master-side has been successful.
12.2.7.7 Working without RADIUS Authentication
If there is no RADIUS authentication, two ways of operation are possible.
The first one is ‘NO AUTHENTICATION’. The master will configure a default QoS and VLAN/OVLAN
configuration (the invited profile) for the slave.
The other one is the use of an ‘AUTHORIZATION LIST’. With ‘ACCESSP_AUTHLIST_x’, up to 128 different
users can be added with their related profiles. The user is searched for in that list, and if an entry matches with the
new user, the QoS and VLAN/OVLAN configuration related to that entry is used for the new user. Otherwise, the
user is rejected.
12.2.8 DHCP Support
12.2.8.1 DHCP Client
The IEEE P1901 nodes perform a DHCP request with extended custom options. So not only the basic IP
configuration (IP address, netmask and gateway) is requested, but the client also requests three custom options in
order to obtain the auto-configuration file:
• tftp-server-name: String with the IP address of the TFTP server.
• extensions-path-name: String with the path and file name of the auto-configuration file inside the TFTP
server.
• PTTP-code: 32 bits integer that represents the PTTP behaviour:
o 0: Boot without VLANs and skip PTTP.
o 1: Keep on requesting PTTP (does nothing).
o [2-4095]: Boot with Management VLAN = PTTP-code. Skip PTTP.
Submission page 375 UPA-OPERA