HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Services Configuration G - Page 35

Format of Option 43,

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The DHCP client can obtain the following information through Option 43: • 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. 1. Format of Option 43: Figure 14 Option 43 format Network configuration parameters are carried in different sub-options of Option 43 as shown in Figure 14. { 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. 2. Sub-option value field formats: { ACS parameter sub-option value field-Contains the ACS URL, username, and password separated by spaces (0x20) as shown in Figure 15. Figure 15 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 16. Figure 16 PXE server address sub-option value field 26

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26
The DHCP client can obtain the following information through Option 43:
•
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.
1.
Format of Option 43:
Figure 14
Option 43 format
Network configuration parameters are carried in different sub-options of Option 43 as shown
in
Figure 14
.
{
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.
2.
Sub-option value field formats:
{
ACS parameter sub-option value field
—Contains the ACS URL, username, and password
separated by spaces (0x20) as shown in
Figure 15
.
Figure 15
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 16
.
Figure 16
PXE server address sub-option value field