RadiSys ATCA-4616 Spezifikationen PDF herunterladen (Seite 21)

Software Architecture

AsshowninFigure 5,theHPIclientlibrary(HCL)isadynamicallylinkedlibrary(DLL)that

providestheHPIAPIaswellasanintegratedRMCPclientforremoteHPIclient‐server

communication.TheHCLsourcecodeisindependentoftheoperatingsystemand

managementprocessor,andworkswithany

genericHPI‐compliantapplication.TheHCLLinux 

libraryisinstalledontheShelfManagermodule.TheHCLsourcecodeisavailableinthe

Radisyssoftwaredistribution.

AnSNMPagentisintegratedwiththeHCLinordertoprovideHPIservicestoanSNMP

managementapplication.ToenabletheHPIsubagent,seeEnablingtheHPIsubagenton

page 61.ForthespecificSNMPobjectstouse,seeChapter4,ChangingShelfSettingsUsing

HPI,onpage 53.

TheHPIclientlibrarycommunicateswiththeHPIserverthrougharemotesocketinterface

(seeFigure 6).TheHCLencapsulatesHPIrequestmessagesintoRMCPpackets,whichare

deliveredoverUserDatagramProtocol(UDP).TheHPIserverisresidentontheShelfManager

andacceptsremotecommandsreceivedattheRMCPserverport,623.

Figure 6. HPI implementation

ShMC

ShMS

HPI Server

Socket I/F

HPI Client

Socket I/F

HPI API

Application

Command

Socket

Event

Socket

HPI

Session

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