Question
I wish to know what the vendor specific options "H" and "I" mean, whether they must always be the same, and what options are valid besides 3 and 4, in reference to your LDAP and RADIUS.doc file.

Can you please inform me what those settings mean and the acceptable settings? Can you explain the difference or reason for there being both an H and I value?
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Answer
"H" is for the user privilege. IPMI spec 2.0 defines the following channel privilege levels. We don't use the OEM Proprietary level for special privilege.

Channel Privilege Level Limit:
0h = reserved
1h = CALLBACK level
2h = USER level
3h = OPERATOR level
4h = ADMINISTRATOR level
5h = OEM Proprietary level

"I" is for debug purpose and it is reserved option. Please ignore it.

Below is the definition of the Channel Privilege Levels from IPMI spec 2.0:

Callback
This may be considered the lowest privilege level. Only commands necessary to support initiating a Callback are allowed.

User
Only ‘benign’ commands are allowed. These are primarily commands that read data structures and retrieve status. Commands that can be used to alter BMC configuration, write data to the BMC or other management controllers, or perform system actions such as resets, power on/off, and watchdog activation are disallowed.

Operator
All BMC commands are allowed, except for configuration commands that can change the behavior of the out-of band interfaces. For example, Operator privilege does not allow the capability to disable individual channels, or change user access privileges.

Administrator
All BMC commands are allowed, including configuration commands. An Administrator can even execute configuration commands that would disable the channel that the Administrator is communicating over.
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