IPMI 2.0 Spec学习

　　IPMB (Intelligent Platform Management Bus): I2C based bus that provides a stardard interconnection between different boards within a chassis. The IPMB can also serve as a standardized interface for auxiliary or "emergency" management add-in cards

　　ICMB (Intelligent Chassis Management Bus): A stardardized interface for platform management information and control between chassis. 

　　FRU: Field Replaceable Unit. A module or component which will typically be replaced in its entirely as part of a field service repair operation. 

　　PET: Platform Event Trap.  A specific format of SNMP trap used for system management alerting. 

　　POST: Power on self test

　　SDR: Sensor Data Record

　　    　　A data record that provides platform management sensor type, locations, event generation and access information. 

　　SEL: System Event Log: A non-volatile storage area and associated interfaces for storing system platform platform event information for later retrieval. 

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　　All IPMI request messages have a Network Function, command and optional data fields. 

　　All IPMI response messges carry Network function, command, optional data and a completion code field.  

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　　The message Interface is defined as a "request/response" interface. The common components of messages specified in this document:

• • 　　Network Function (NetFn): A field that identifies the functional calss of the message. 
  • 　　Request/Reponse identifier: A field unambiguously differentiates Request Messages from Response Messages. 
  • 　　Request ID: Information that identifies the source of the request. 
  • 　　Responder's ID: A field that identifies the responder to the request. 
  • 　　Command: 00h - FDh
  • 　　Data: Additional parameters for a request or response