HPE FlexNetwork 10500 Series Configuration Manual page 43

•
Service provider identifier, which is acquired by the CPE from the DHCP server and sent to the
ACS for selecting vender-specific configurations and parameters. For more information about
CPE and ACS, see Network Management and Monitoring Configuration Guide.
•
PXE server address, which is used to obtain the boot file or other control information from the
PXE server.
•
AC address, which is used by an AP to obtain the boot file or other control information from the
AC.
1. Format of Option 43:
Figure 15 Option 43 format
0
Option type (0x2B)
Network configuration parameters are carried in different sub-options of Option 43 as shown in
Figure 15.
Sub-option type—The field value can be 0x01 (ACS parameter sub-option), 0x02 (service

provider identifier sub-option), or 0x80 (PXE server address sub-option).
Sub-option length—Excludes the sub-option type and sub-option length fields.

Sub-option value—The value format varies by sub-option.

2. Sub-option value field formats:
ACS parameter sub-option value field—Includes the ACS URL, username, and

password separated by spaces (hexadecimal number 20) as shown in
Figure 16 ACS parameter sub-option value field
URL of ACS (variable)
User name of ACS (variable)
Password of ACS (variable)
Service provider identifier sub-option value field—Includes the service provider

identifier.
PXE server address sub-option value field—Includes the PXE server type that can only

be 0, the server number that indicates the number of PXE servers contained in the
sub-option, and server IP addresses, as shown in
Figure 17 PXE server address sub-option value field
0
PXE server type (0x0000)
Server number
Server IP addresses (variable)
7 15
Option length
Sub-option value (variable)
...
7
32
23
Sub-option type
20
20
Figure 17.
15
31
Sub-option length
Figure 16.