HP 5920 Series Configuration Manual page 34

ACS parameters, including the ACS URL, username, and password.
•
• PXE server address, which is used to obtain the boot file or other control information from the PXE
server.
Format of Option 43:
1.
Figure 13 Option 43 format
Network configuration parameters are carried in different sub-options of Option 43 as shown
in Figure
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 with sub-options.
Sub-option value field formats:
2.
ACS parameter sub-option value field—Contains the ACS URL, username, and password
separated by spaces (0x20) as shown in
Figure 14 ACS parameter sub-option value field
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
Figure 15 PXE server address sub-option value field
Relay agent option (Option 82)
Option 82 is the relay agent option. It records the location information about the DHCP client. When a
DHCP relay agent or DHCP snooping device receives a client's request, it adds Option 82 to the request
message and sends it to the server.
13.
Figure 14.
Figure 15.
25