HP Moonshot 1500 Chassis User Manual Page 7
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1 Introduction and key concepts
Overview
The term Intelligent Platform Management (IPMI), refers to autonomous monitoring and recovery
features implemented directly in platform management hardware and firmware. The key
characteristic of Intelligent Platform Management is that inventory, monitoring, logging, and recovery
control functions are available independently of the main processors, BIOS, and operating system.
Platform management functions are available even when the system is in a powered down state.
IPMI capabilities are a key component in providing enterprise-class management for HA systems.
Platform status information is obtained and recovery actions initiated under situations where system
management software and normal “in-band” management mechanisms are unavailable.
The independent monitoring, logging, and access functions available through IPMI provide a level
of manageability built-in to the platform hardware. This supports systems with no system management
software available for the particular operating system, or the end-user who elects not to load or
enable the system management software.
NOTE: The HP Moonshot-45G Switch Module does not support IPMI. Only the HP Moonshot iLO
Chassis Management Firmware supports IPMI.
Sensor Data Model
The IPMI Sensor Model provides access to monitored information including temperatures, voltages,
and fan status. Instead of providing direct access to the monitoring hardware, IPMI provides access
by abstracted sensor commands, such as the Get Sensor Reading command, implemented
via a management controller. This approach isolates software from changes in the platform
management hardware implementation. Sensors return analog or discrete readings and events
are either discrete or threshold-based. Sensors are classified according to:
• Type of readings
• Type of events
Event types, sensor types, and monitored entities are represented using numeric codes defined in
the IPMI specification. IPMI avoids reliance on strings for management information and using
numeric codes facilitates internationalization, automated handling by higher level software, and
reduces management controller code and data space requirements.
Sensor owner identification
The definition for the Request/Response identifier, Requester’s ID, and Responder’s ID are specific
to the particular messaging interface used. However, the SDR and SEL must contain information
to identify the owner of the sensor. For management controllers, a slave address and LUN identify
the owner of a sensor on the IPMB. For system software, a software ID identifies the sensor owner.
These fields are used in event messages, where events from management controllers or the IPMB
are identified by an eight-bit field where the upper 7 bits represent the slave address or the system
software ID. The least significant bit is 0 if the value represents a slave address and 1 if the value
represents a system software ID.
Sensor number is not part of the sensor owner ID, but is a separate field used to identify a particular
sensor associated with the sensor owner. This combination of sensor owner ID and sensor number
uniquely identify a sensor in the system.
Table 1 Sensor owner ID and sensor number field definition
System Sensor Owner IDIPMB Sensor Owner ID
system software ID (7 bits)7:1 slave address (7 bits)
Overview 7
- Abstract 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Overview 7
- Sensor Data Model 7
- Sensor type code 8
- SDR repository 10
- Standardized timers 12
- Special timestamp values 13
- 4 IPMItool 18
- Interfaces 19
- Features 20
- Inventory 22
- Chassis management 22
- Synopsis 22
- Description 23
- 5 Command specification 25
- Global commands 29
- Cold reset command 32
- Warm reset command 33
- Get self test results command 33
- Get ACPI power state command 34
- Clear message flags command 37
- Get message flags command 38
- Get message command 39
- Send message command 42
- ◦ version 5 SHA1 hash 44
- ◦ 0h = ASCII+Latin1 47
- ◦ 1h = UTF-8 47
- ◦ 2h = UNICODE 47
- ◦ All other = Reserved 47
- Close session command 57
- Get session info command 57
- Get AuthCode command 59
- Set channel access command 60
- Get channel access command 62
- Get channel info command 63
- Set user access command 65
- Get user access command 66
- Get user name command 68
- Set user name command 68
- Set user password command 69
- Activate payload command 71
- ◦ [0] — Reserved 73
- ◦ 1b = Test mode enabled 73
- IPMI LAN Device Commands 83
- MC watchdog timer commands 96
- Watchdog timer event logging 97
- Pre-timeout interrupt 98
- Reset watchdog timer command 98
- Set watchdog timer command 98
- Get watchdog timer command 100
- Chassis commands 102
- Get chassis status command 103
- Chassis control command 104
- Chassis identify command 105
- Get POH counter command 111
- Event commands 112
- Get event receiver command 113
- SEL commands 114
- Clear SEL 117
- SEL record type ranges 117
- Get SEL time command 118
- Set SEL time command 118
- SDR record IDs 118
- Get SDR command 121
- Add SDR command 122
- Delete SDR command 123
- Clear SDR repository command 123
- Sensor Device Commands 126
- Get device SDR command 127
- Get sensor thresholds command 128
- Get sensor reading command 129
- DCMI specific commands 130
- ◦ [0] Reserved. Write as 0b 133
- Get DCMI sensor info command 134
- Set asset tag command 135
- PICMG specific commands 137
- Table 113 Site type values 138
- System Interfaces 140
- Network function codes 141
- Completion codes 142
- Channel numbers 145
- Logical channels 145
- Channel Privilege Levels 145
- Users & Password support 146
- IPMI sessions 146
- System interface messaging 147
- Bridging 148
- Bridged Request Example 149
- MC IPMB LUNs 151
- KCS Interface/MC LUNs 153
- LAN Interface 154
- RMCP Message Format 155
- Serial Over LAN (SOL) 156
- 7 Support and other resources 157
- Websites 158
- A Command Assignments 159
- B Verbose output examples 164
- 166 Verbose output examples 166
- 168 Verbose output examples 168
- 170 Verbose output examples 170
- 172 Verbose output examples 172
- At cartridge: 174
- 176 Verbose output examples 176
- 178 Verbose output examples 178
- 180 Verbose output examples 180
- 182 Verbose output examples 182
- 184 Verbose output examples 184
- Glossary 186
- 188 Index 188
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