How to configure IPMI, can be found in the Installation Manual in the System setup chapter.
If you forgot the IPMI password, follow the steps below:
If the IPMI default password is lost, a tool called IPMICFG-Win, available from the SuperMicro website, can be used to recover it.
The program description can be found here: https://www.supermicro.com/en/solutions/management-software/ipmi-utilities(opens in a new tab)
And the download is found here:
To reset the password:
IPMICFG-Win.exe -user list
IPMICFG-Win.exe -user setpwd 2 Admin123