Certain aspects of the present disclosure are directed to a baseboard management controller (BMC). The BMC includes a processor, and a memory having firmware including a message interface, a master management instance, and first and second assisting management instances. The first and second assisting management instances monitor at least one health or performance related aspect of first and second computer nodes, respectively. The master management instance can receive an IPMI message from the message interface, the IPMI message containing first data for constructing an IPMB message, the first data including a first IPMB slave address. The master management instance can identify the first assisting management instance from the assisting management instances based on the first IPMB slave address. The master management instance can transfer the first data to the first assisting management instance.