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Each DPU has a different identifier printed on the label: serial number and the card MAC (for the Ethernet protocol) and the card GUID (for the InfiniBand protocol). VPI cards have both a GUID and a MAC (derived from the GUID).

The product revisions indicated on the labels in the following figures do not necessarily represent the latest revisions of the cards.

The board label contains the base GUID.

The DPU labels contain five MAC addresses (Host, ECPF, BMC, MPF, and OOB).

  • Host (Base MAC)
  • ECPF: Embedded CPU Function (the embedded Arm system controls the NIC resources and datapath)
  • DPU BMC: Connection of a Baseboard Management Controller (BMC)
  • MPF: Multi/Management Physical Function
  • OOB: Out-of-Band Management (Management Port) 

The barcode supports all of the available MAC addresses.

The HOST MAC in the board label is the product's base MAC.
In dual-port cards, the HOST MAC belongs to the first port, and the HOST MAC of the second port increases by 1 (in HEX).
For example: 
The HOST MAC address of the second port is HOST: 00 02 C9 27 05 01.

The allocation of MAC addresses to the embedded CPU is derived from a few configuration factors which set some variables.

The gap between the MAC addresses is set by constant numbers in HEX. 
The OOB, ECPF, and MPF MAC addresses depend on the BASE MAC address. 

DPU Board Label (Example)