HP 6125G Configuration Manual page 37

Service provider identifier, which is acquired by the Customer Premises Equipment (CPE) from the
•
DHCP server and sent to the ACS for selecting vender-specific configurations and parameters.
Preboot Execution Environment (PXE) server address, which is used to obtain the bootfile or other
•
control information from the PXE server.
Format of Option 43
1.
Network configuration parameters are carried in different sub-options of Option 43 as shown
in Figure 18.
Figure 18 Option 43 format
Sub-option type—Type of a sub-option. The field value can be 0x01 (an ACS parameter
sub-option), 0x02 (a service provider identifier sub-option), or 0x80 (a PXE server address
sub-option).
Sub-option length—Length of a sub-option excluding the sub-option type and sub-option length
fields.
Sub-option value—Value of a sub-option. The value format varies with sub-options.
Format of the sub-option value field of Option 43
2.
As shown in
URL, ACS username, and ACS password separated by spaces (0x20):
Figure 19 ACS parameter sub-option value field
The value field of the service provider identifier sub-option contains the service provider
identifier.
Figure 20 shows the format of the value field of the PXE server address sub-option. The value of
the PXE server type can only be 0. The server number field indicates the number of PXE servers
contained in the sub-option. The server IP addresses field contains the IP addresses of the PXE
servers.
Figure 19, the value field of the ACS parameter sub-option contains variable ACS
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