Intel MPCMM0001 manual Rmcp User Privilege Levels, Rmcp Discovery, Rmcp Session Activation

RMCP

20.3RMCP User Privilege Levels

There are five privilege levels defined in the IPMI1.5 spec.

1.Callback level

2.User level

3.Operator level

4.Administrator level

5.OEM Proprietary level

Callback Level has the most restricted privileges, and OEM Proprietary Level has the least restricted privilege. The RMCP server provides the user and password support associated with these five privilege levels.

A user level requestor is not allowed to issue a request with a higher privilege level IPMI command. For example, a user level requestor cannot issue a request such as Clear SEL that needs Operator privileges.

The user name, password, and privilege level can be set using the following IPMI commands:

•Set User Name (See IPMI specification V1.5 section 18.25 for details)

•Set User Password (See IPMI specification V1.5 section 18.27 for details)

•Set User Access (See IPMI specification V1.5 section 18.23 for details)

Currently only user root is supported.

20.4RMCP Discovery

According to the IPMI 1.5 specification, RMCP client uses Ping/Pong messages to discover the existence of an RMCP server. To support the discovery mechanism, the RMCP server supports:

•RMCP/ASF Presence Ping Message

•RMCP/ASF Pong message

For the Pong message, the CMM will convey:

•IANA Enterprise number.

•Supported Entities: IPMI supported and ASF version 1.0

20.5RMCP Session Activation

The CMM will support multiple RMCP sessions.

1.To activate a session, the RMCP client sends a Get Channel Authentication Capabilities command packet with Authentication Type = none (in clear). The response packet will contain information regarding which type of challenge/response authentication is available.

2.The RMCP client requests a session challenge by issuing a Get Session Challenge request, also with Authentication Type = none. The request contains information indicating what type of authentication type the RMCP client wants to use. This must be one of the supported types

MPCMM0001 Chassis Management Module Software Technical Product Specification 191