APC Switched Rack Power Distribution Unit (PDU) manual Dhcp response options

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USER’S GUIDE switched rack pdu

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DHCP response options

Each valid DHCP response contains options that provide the TCP/IP settings that the Switched Rack PDU needs to operate on a network, and other information that affects the operation of the PDU.

The PDU uses the Vendor Specific Information option (option 43) in a DHCP response to determine whether the DHCP response is valid.

Vendor Specific Information (option 43). The Vendor Specific Information option contains up to two APC specific options encapsulated in a TAG/LEN/DATA format: the APC Cookie and the Boot Mode Transition.

APC Cookie. Tag 1, Len 4, Data “1APC”

Option 43 notifies the PDU that a DHCP server has been configured to service APC devices. By default, the APC Cookie must be present in this DHCP response option before the PDU can accept the lease.

Use the DHCP Cookie Is setting described in Switched Rack PDU settings to disable the APC cookie requirement.

Following, in hexadecimal format, is an example of a Vendor Specific Information option that contains the APC cookie:

Option 43 = 0x01 0x04 0x31 0x41 0x50 0x43

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