HP 10500 Series Configuration Manual page 42

Vendor-specific option (Option 43)
DHCP servers and clients use Option 43 to exchange vendor-specific configuration information.
The DHCP client can obtain the following information through Option 43:
Auto-Configuration Server (ACS) parameters, including the ACS URL, username, and password.
•
• 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
20.
Figure 20 Option 43 format
Sub-option type—The field value can be 0x01, 0x02, or 0x80.
−
−
−
Sub-option length—Excludes the sub-option type and sub-option length fields.
Sub-option value—The value format varies with sub-options.
Sub-option value field formats
2.
ACS parameter sub-option value field—Contains variable ACS URL, username, and password
separated by spaces (0x20) as shown in
Figure 21 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—Contains the service provider identifier.
PXE server address sub-option value field—Contains 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
0x01 indicates an ACS parameter sub-option.
0x02 indicates a service provider identifier sub-option.
0x80 indicates a PXE server address sub-option.
Figure 21.
20
20
Figure 22.
33
Figure