an overview of ipmi

8/11/2019 An Overview of IPMI

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IPMI Overview,Progress andImplementation

Tom SlaightServer Management Architect

Enterprise Server Group

Intel Corporation

John GrafServer Management Architect

Hewlett-Packard Company

September 16, 1998


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Agenda

Introduction & Overview

Architecture & Implementation

Whats New for IPMI v1.0Summary & Call to Action


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Agenda





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IPMI Initiative

Intelligent Platform Management Interface IPMI v0.9 announced at Spring 98 Intel

Developer Forum

Made available for industry review

Promoters:Intel, Hewlett-Packard, NEC, and Dell

Owners of the specification, consolidatedindustry review input


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Initiative Status

developer.intel.com/design/servers/ipmi


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IPMI Initiativev1.0 is Ready to Go

AdoptersSign royalty-free Adopters agreement for

implementing the IPMI v1.0 specification

Details on IPMI Web Site

Ready for Adopters!http://developer.intel.com/design/servers/ipmi


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Initiative StatusAdopter News!

IPMI Adopters* - 9/16/98Reliance ComputerCorp.

Seanix

Siemens NixdorfInformations systeme AG

Serano SystemsCorp.

SiliconDesign Resources

Texas Micro Corp.Toshiba Corp.

Phoenix TechnologiesLtd.

AcerInc.

American Megatrends Inc.

Bull S.A. InterWorksComputer

Products

Ipex ITG

Mitsubishi ElectronicsPC Division

Olivetti WorldwideComputer Corp.

* Third-party marks and brands are the property of their respective owners.


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IPMI OriginsServer Focus

Keep i t Runn ing !

RAS Features Focus

Reliability

Availability

Serviceability

Server Environment

Remote administrator Expensive hardware

High cost for downtime and repair


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Server Environment

More extensive monitoring, control,and automatic recovery features

Need for Always Accessible

management

Complex system topologies

Multiple internal boards, external

peripheral chassis, modular rack mountsystems

Multi-OS support


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The IPMI Challenge

S/W S/W

S/W

Todays solutions stacks work -

S/WS/WS/W

But not across platforms


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IPMI StrategySpecify the interface

IntelligentPlatformManagement

Interface

Defines a standardized,

abstracted, message-based

interface to intelligent platform

management hardware

Defines standardized records for

describing platform

management devices and their

characteristics

Gateway to Server-class RAS Features


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IPMIIPMI

IPMI StrategyWhere it fits...

Complements existing management standards

In-bandRemote

Access

Service Provider

SP InterfaceInstrumentation Code

Platform Mgmt. Controller

ManagementApplications

IPMI H/W I/F

Ma

nagementS/W

Sta

ndards

IPMI

STANDARD I/F

(e.g. RPC, SNMP)

STANDARD I/F

(e.g. DMI-MI, CIM)

STANDARD I/F

(e.g. DMI-CI, WMI)

IPMI I/F Code


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The IPMI Solution

Common hardware

interfaces and abstraction

S/WS/W

S/W

IPMI

Enable cross-platform

management

S/W S/W

S/W


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IPMI Benefits

System

OEM

Software

Hardware


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IPMI BenefitsSystem

Provides the foundation forIntelligent Platform Management

Autonomous access, monitoring, logging, andcontrol features that function independently

from the system processors, software, and OS

Provides scalable support for entry to high-end systems

Supports multi-chassis and modularconfigurations


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IPMI BenefitsOEM

Supports OEM differentiation

Codes, events, and sensor types reserved forOEM use.

Supports chassis feature integrationwithout baseboard modifications

Provides a common platform mgmt.

configuration interfaceno need to touch BIOS FLASH

no need for platform-specific utilities


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IPMI BenefitsSoftware

Speeds instrumentation software porting Makes platform management features self-descriptive (Plug

N Play). Software automatically configures to platformmanagement hardware

Isolates mgmt. S/W from H/W changes

Enables cross-platform software Standardized platform hardware interface enables mgmt.

software and driver to work on multiple platforms.

Can be used with any mgmt. S/W stack Designed for simple mapping to WMI/CIM

Supports localization


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IPMI BenefitsHardware

Preserves ability to innovate hardware

Provides standardized interfaces forextending management features

IPMB - for intra-chassis extensions and standardized EmergencyManagement Card Access

ICMB - for inter-chassis extensions

Facilitates out-of-band secondary access Message based interface supports bridging to secondary

management interfaces - NIC, RS-232, etc.

Uses off-the-shelf components

Standardizes the interface,

not the implementation


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Agenda





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IPMI ArchitectureKey Elements

IPMI Messaging Command Sets Sensor Data Records

Event Messages

Baseboard Mgmt. Controller

System Interface Non-volatile Storage

Intelligent Platform Mgmt. Bus

Intelligent Chassis Mgmt. Bus

An example: HP TopTools

An example: Intel Server Control

Abstraction

Hardware

Software


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IPMI AbstractionMessaging & Command Sets

All IPMI operations are accomplished bysending messages to the managementcontrollers

Standardized commands defined in the IPMIspecification

All messages use a Request / Response Protocol

Facilitates delivery over multiple transports:

system interface, IPMB, ICMB, etc.


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IPMI AbstractionMessaging & Command Sets

IPMI Commands grouped by functionalitySupports modular firmware development

Sensor and Event commands

Application commands for controller specific

functionality Chassis commands for chassis control & status

Storage commands for non-volatile storage access

Bridge commands

Firmware Transfer commands

OEM commands


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IPMI AbstractionSDRs

Describe the population of sensors Location, ID, and access method

Type (temp, voltage, processor, etc.), unit ofmeasurement (volts, amps, bytes/sec, etc.), readingtype (digital/discrete/analog) and threshold support

Guide software in presenting sensorinformation normal reading ranges, sensor accuracy and tolerance

sensor id string

Identify the entity and/or FRU associated

with each sensor Direct the sensor initialization process

Initialization of Event Generation, Thresholds,Hysterisis, and/or Event Scanning

SensorDataRecords

Key to Plug N Play Management


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IPMI AbstractionEvent Messages

EventMessages

Standardized content - EventMessages Encapsulate Key EventInfo:

Sensor Type, Event Type, Event

Transition, & Event Generator

Combine with SDR info for richerevent analysis

Allow application to identify Entityand FRU associated with event

Sensor short ID String

etc.


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IPMI H/W Elements

IPMI Messages

Baseboard Mgmt. Controller

System InterfaceNon-volatile Storage

Baseboard

Monitoring

& control

circuitry

System Bus

Baseboard

Mgmt.

Controller

- System Event Log

- SDR Repository

- Baseboard FRU Info

System Interface


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IPMI H/W ElementsBMC

BaseboardManagementController

Management Micro-controllerprovides the Intelligence forIPMI:

Autonomous monitoring and logging

Interface to IPMI Storage

Receives and logs event messages

System interface to IPMB / I2C

System Watchdog Timer

Optional power control functions.

Plus OEM value added mgmt.features


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IPMI H/W ElementsSystem Interface

KeyboardControllerStyle

3 styles of I/O Mapped interface: Classic 8742 Interface

Available built-in to micros

ServerManagementInterface

Chip

BlockTransfer

Simple 3 I/O port, byte based interface

Implementable using FPGA or discretelogic

Simple 3 I/O port, block based interface

Implementable using FPGA or discretelogic

NEW


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IPMI H/W ElementsNon-volatile Storage

SystemEventLog

Centralized non-volatilestorage for time-stampedEvent MessagesCompact 16-byte Event Records

include provision for OEM event typesand fields

Message format tied to Sensorrepresentation and access

FRU Devices

SDR Repository Centralized NV-storage forSensor Data Records

Distributed non-volatilestorage for FRU Information


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IPMI H/W Elements

IPMI Messages

RAID Backplane

IPMB - Intelligent Platform Management Bus

Private Management Busses

Baseboard

Monitoring

& control

circuitry

System BusMemory Card

Private Mgmt. Bus

Front Panel

System Interface

Chassis

Sensors

Aux. IPMB

FRU SEEPROM

FRU SEEPROM

Baseboard

Mgmt.

Controller

FRU SEEPROM

Chassis

Mgmt.

ControllerSEL, SDR, FRU

IPMB


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IPMI H/W ElementsIPMB

Standardized bus and protocolfor extending managementcontrol, monitoring, and eventdelivery within the chassis.

Provides integration point forchassis mgmt. features

Offers standardized connectionfor emergency managementcards

Multi-master I2C-based bus

Simple request/response protocol

Uses IPMI Command sets

Supports non-IPMI devices

IntelligentPlatformManagementBus


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IPMI H/W ElementsPrivate Management Busses

I2C-based, single master busses accessedvia management controller

Used primarily for IPMI FRU SEEPROMsAvailable for value added I2C devices - outside IPMI

context

Shareable with hidden I2C devices owned by themanagement controller

Accessed via Master Write-Read I2C command

Other I2C busses may be present - but these arent IPMIPrivate Busses unless command access is provided


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IPMI SoftwareExample: HP TopTools

HP TopTools*Web-based management application for

HPs NetServers, Kayak workstations, andVectra desktop clients*

Data exposed to Java applicationsthrough a combination of DMI and SNMP

NetServer agents have standardized on

IPMI for hardware event log, sensors, andOS watchdog



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IPMI SoftwareExample: Intel Server Control

Intel Server ControlIPMI-based instrumentation software for

Intels server board sets

Automatically integrates additionalchassis sensors:

fans, temperatures, voltages, chassisintrusion, and power supplies

Also uses non-IPMI interfaces, such asSM BIOS


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IPMI SpecificationsTie it all together...

IPMI - Intelligent Platform ManagementInterfaceBMC and satellite management controller functions

Command set specifications

Sensor Data Record and Event Log data formats

IPMB - Intelligent Platform Management Bus

Protocol

Transport protocol, timing, electrical specifications, andconnectors for the IPMB

Plus supporting specifications...

IPMI


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IPMI Specificationsv1.0 supporting documentation

FRU Inventory Format specificationComprises product, board, chassis, power supply, and

OEM FRU information

IPMB Address allocationspecifies the allocation of I2C addresses for devices that

connect to the IPMB

Platform Event Trap Format Specificationspecifies a common format for asynchronous SNMPv1

traps generated by platform events

http://developer.intel.com/design/servers/ipmi

IPMI


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Development Support

Developer informationIPMI Implementers Guide

IPMI FAQ

Development test tools

Hardware development aidsI2C Bus interfaces, monitors, & s/w:

Micro Computer Control Corporation*

Calibre UK Ltd*

More to come


IPMI


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Agenda



Whats New for IPMI v1.0

Summary & Call to Action

Wh t N i IPMI 1 0


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Whats New in IPMI v1.0Highlights

Block Transfer interface

System Interface interrupts

Deassertion event status

Improved command consistency

Optional POH (power on hour)

Counter

Wh t N i IPMI 1 0


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Improved identification ofManagement Controllers

Manufacturer ID based on IANAEnterprise ID

Optional controller GUID

Modal SDR Repository support

Supports incorporation SDRs in FLASH

Wh t N i IPMI 1 0


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New FRU Record TypesPower Supply Information

input voltage ranges, wattage, input current,fan/predictive-fail support, etc.

DC Output power delivery capabilities of individual PS outputs

Power Consumption

DC loading records that match DC Output records

Management Access Record stores alternate access paths for peripheral and

systems


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Whats New in IPMI v1.0

Entity Association records

Standardized Watchdog Timer

Assignable sensor types

New sensor & event types


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Entity Association Records

Identifies relationship between physicaland/or logical entities

Single bit defines entity as logical orphysical entity. e.g. processor or processorgroup.

Links to FRU information

Supports multiple mappings physical - to - physical, logical - to - physical,

logical - to - logical, nested

Can be used to populate CIM associations

E tit A i ti


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Entity AssociationSimple Entity - to - FRU Association

Sensor

Record

memory

module 1

FRU

Locator

Record

memory

module 1

presencesensor

Entity ID

FRU

device

FRU address

presence sensor for memory module

E tit A i ti R d


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Entity Association RecordsExample 1

voltage sensor for processor pairSensor

Record

processor

group 1

Entity

Association

Record

processor

group 1

processor 1

processor 2

voltagesensor

Entity ID

E tit A i ti R d


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Entity Association RecordsExample 2

power unit redundancy sensorFRU Locator

power supply 3

FRU Locator

power supply 2

Sensor

Record

power unit1

redundancy

sensor

Entity ID

Entity

Association

Record

power unit

1

power supply 1

power supply 2

power supply 3

Sensor Type

FRU Locator

power supply 1FRU

device

FRU address


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Watchdog Timer Specified to generate selectable actions on

timeout: Reset

Power Cycle

Power Off

Interrupt: NMI, SMI, or IRQ

Maintains identity of timer use

BIOS, FRB/ASR, OS, OEM

Automatically logs timeout action and use

Provides common platform mgmt. accessfor Emergency Mgmt. Cards


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Assignable Sensor Types

Supports the creation of genericmanagement controllers

Sensor Type assigned at initialization

Works with discrete and threshold-basedanalog sensors

Supports mix of Pre-defined and Genericsensors in system

Leaves SDR Repository and EventLogging functions decoupled


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Assignable Sensor Types

BMC GenericController

1Init Agent

SDR

Repository

analogsensor 12

controller 1sensor 12

IPMB

+5 voltage

+5 voltage

init

Event

Rcvr.

+5 voltage

Later

event msg.

carriesvaluable

standalone

content

event msg.

SEL

Event Controller 1,sensor 12

+5 voltage

over

critical threshold

Initialization

Agent

assigns

Sensor Type +5 voltage


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New Sensor & Event Types

Security statusPhysical Security

extension of chassis intrusion includes:

drive bay & I/O bay intrusion

LAN Leash and unauthorized dock/undock

Platform Security Violation Attempt

pre-boot & out-of-band password violation

Slot / Connector interlock, fault, presence, and power status

for hot-plug slot support


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New Sensor & Event Types

System ACPI Power State for out-of-band reporting of ACPI state

Platform Alert for platform generated alerts, e.g. LAN

alerts and telephone pages

Entity Presence Sensor for auto-configuration support

Plus: LAN, Monitor ASIC, Boot & Pre-boot

Events, Boot and OS-Load Errors


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Agenda



Whats New for IPMI v1.0

Summary & Call to Action


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Summary

IPMI provides the foundation forIntelligent Platform ManagementProvides Plug N Play platform management

Preserves differentiation

Implemented with off-the-shelf components

IPMI v1.0 is ready to go

Stay tuned ... more to come!

C ll A i


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Call to Action

Get the specs

Become an IPMI 1.0 Adopter

Deploy IPMI v1.0 in your serverproducts

developer.intel.com/design/servers/ipmi

an overview of ipmi

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