Dell Metered PDU LED - Manual (Page 87)

USER’S GUIDE
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Vendor Specific Information (option 43). The Rack PDU uses this option in a DHCP
response to determine whether the DHCP response is valid. This option contains up to
two specific options in a TAG/LEN/DATA format: the Vendor Cookie and the Boot Mode
Transition.
• Vendor Cookie. Tag 1, Len 4, Data “1APC”
Option 43 communicates to the Rack PDU that a DHCP server is configured to
service the Dell Rack PDUs. By default, the Rack PDU does not require this cookie.
Following, in hexadecimal format, is an example of a Vendor Specific Information
option that contains the vendor cookie:
Option 43 = 0x01 0x04 0x31 0x41 0x50 0x43
• Boot Mode Transition. Tag 2, Len 1, Data 1/2
This option 43 setting enables or disables Remain in DHCP & BOOTP mode after
accepting TCP/IP settings , which, by default, is disabled.
– A data value of 1 enables Remain in DHCP & BOOTP mode after accepting
TCP/IP settings . Whenever the Rack PDU reboots, it will request its network
assignment first from a BOOTP server, and then, if necessary, from a DHCP
server.
– A data value of 2 disables the option Remain in DHCP & BOOTP mode after
accepting TCP/IP settings option. The TCP/IP Configuration setting option
switches to DHCP when the Rack PDU accepts the DHCP response. Whenever
the Rack PDU reboots, it will request its network assignment from a DHCP server
only.
Following, in hexadecimal format, is an example of a Vendor Specific Information
option that contains the vendor cookie and the
disable setting for Boot Mode
Transition :
Option 43 = 0x01 0x04 0x31 0x41 0x50 0x43 0x02 0x01 0x01
To enable the requirement of a vendor cookie, see DHCP .