Retrieving Data from BMC Via IPMB

The BMC has 2 IPMB modes. It can be used as a requester or responder.

• Requester Mode
  When used as a requester, the BMC sends IPMB request messages to the BlueField via SMBus 0. The BlueField then processes the request and sends a message back to the BMC.

• Responder Mode
  When used as a responder, the BMC receives IPMB request messages from the BlueField on SMBus 0. It then processes the message and sends a response back to the BlueField.

Both modes are enabled automatically at boot time.

For more information on how to use IPMI, please refer to the IPMI 2.0 standard.