Command Constraints ​

MessageLength ​

The maximum message length supported by the IPMB is 254 bytes: 6 bytes for the message header + 247 bytes for the message body + 1 byte for verification.

The maximum message length supported by BT is 252 bytes: 4 bytes for the message header + 247 bytes for the message body + 1 byte for verification.

Performance Specifications ​

Time for processing ipmb messages. 90% of messages are processed within 20 ms, and the timeout interval is 100 ms. (The return is ignored after timeout.)

Reliability Suggestions ​

In the new IPMI command application scenario, if BT communication is involved, it is recommended that the integrity verification field be added to the end of the request and response. The recommended verification algorithm is CRC8.