RadiSys ATCA-4616 Spezifikationen PDF herunterladen (Seite 22)

Software Architecture

RMCP,arequest‐responseprotocol,isasimplepacket‐basedcommunicationmechanism.

RMCPpack etsincludeafieldthatindicatestheclassofmessageembeddedinthepack et.The

messagesbetweentheHPIclientandHPIserverareencapsulatedinRMCPpacketsusingthe

OEMclass.Formoreinformation,seethe

RMCPsectionoftheIntelligentPlatform

ManagementInterfaceSpecificationv2.0,DocumentRevision1.0.

TheHPIservice reportsthesystemstatusfromtheperspectiveofthesystemitisrunningon.

WhenashelfhasredundantSCMs,theHPIserveralsoemploysanactive/standbyredundancy

model.Inthismodel,theactiveHPIserverrunsontheactiveShelfManagerandthestandby

HPIserverrunsonthestandbyShelfManager. Formoreinformation,seeHPIserver

redundancyonpage 31.

Inarun‐timeenvironment,theHPIclientlibraryisconsideredanextensionofthe

managementapplication.Theremotenetworkinterfaceprovidedbytheclientlibraryallows

themanagementapplicationtoexecutefromanywherewithinthenetworkandonany

modulerunningtheLinuxoperatingsystem.Theclientlibrarymayex ecuteonthesame

moduleastheShelfManager.Inalocalenvironment,theclientstillusesthesocketinterface

butinitslocalform.

Domain alarm table (DAT)

HPImaintainsadomainalarmtableofactivealarmsrelatedtotheshelf.Thetable’scurrent

alarmscausethealarmLEDstoturnonandoff,unlessthesystemmanageroverridesthis

behavior.Unacknowledgedalarmsadditionallycausetheaudiblealarmtosound,unlessthe

systemmanageroverridesthis.Alarmsareremovedfromthetablewhentheconditionis

resolved.

ForinformationoninteractingwiththeDAT,seeRespondingtoalarmsonpage 100.For

detailsonhowtheShelfManagerrespondstoalarms,seeManagingAlarmsandEventson

page 82.ForgeneralinformationabouttheDAT,seethedomainalarmtablesectionofthe

SAFHPISpecification.

System event log (SEL)

TheIPMCofeachintelligentFRUkeepsalocalsystemeventlogcontainingallevents

generatedbytheIPMC.Someeventsannouncestatechanges,andothersindicatehealth

conditionsandcausealarms.TheSELontheactiveShelfManagermoduleactsastheSELfor

theentireshelf.ItisacollectionoftheSELentriesfromallFRUsintheshelf,andidentifies

eacheventbytheIPMBaddressoftheFRUthatgenerate dit(intheleastsignificantbyteof

thegeneratorID).

TheSELisprimarilyintendedfortroubleshootingpurposesanddoesnotofferaprogrammatic

interface.ThesimilarDomaineventlog(DEL)canbeaccessedprogrammaticallybyasystem

manager.TheSELcontainsacompletelistofIPMCevents,soitisthebestsourceforevents

suchassystemprogresscheckpointeventsgenerate dbyRadisysmodules,whichareexcluded

fromthedomaineventlog.

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RadiSys ATCA-4616 Spezifikationen Seite 22