RadiSys ATCA-4616 Dokumentacja Pobierz pdf (Strona 60)

Changing Shelf Settings Using HPI

Using SNMP

SNMPaccesstotheshelfmanagementfunctionalityisprovidedthroughtheHPI‐B0101‐MIB

module,whichworksseamlesslywiththeB.02.01HPI.TheHPIsubagentoneachShelf

ManagermodulefacilitatesSNMPmanagementoftheATCAshelfbypopulatingtheobjects

andgeneratingthenotificationsdefinedintheHPI‐B0101‐MIBmodule.OneachShelf

ManagermoduletheHPIsubagentcommunicateswiththeHPIserverusingtheHPIclient

libraryfunctions.

Note:TheHPIsubagentisnotsupportedontheATCA‐6002shelf.

ThecolumnarobjectsineachHPI‐B0101‐MIBmoduletablederivetheirinstancevaluesfrom

oneormoreindexobjects.TheRadisysHPIsubagentassignsindexvaluesintheseways:

•MosttablesusesaHpiDomainIdasthefirstindexobjectwhichisalwaysrepresentedby

theSAHPI_UNSPECIFIED_DOMAIN_IDvalueof4294967295(0xffffffff).

•TablesassociatedwithHPIresourcesarealsoindexedbythesaHpiResourceIdobject.One

exceptionisthesaHpiResourceTableitself,whichisindexedbysaHpiResourceEntryId.

Important:TheSNMPmanagementapplicationshouldneverassumespecificvaluesfor

thesaHpiResourceIdandthesaHpiResourceEntryIdobjects.InsteadtheSNMP

managementapplicationshoulddeterminethevaluesbyreadingthesaHpiResourceTable

andassociatingthesaHpiResourceIdandsaHpiResourceEntryIdvaluesforeachresource

withitssaHpiResourceEntityPathvalue,whichidentifiestheresource’sfunctionand

hierarchicallocationwithintheshelf.

Inaddition,theSNMPmanagementapplicationshouldnotassumeanynumerical

relationshipbetweenthesaHpiResourceIdandthesaHpiResourceEntryIdvalues.TheHPI

subagentcurrentlyusesthesamevalueforbothforeachresource,butthismaychangein

thefuture.

•TheHPIsubagentpopulatesonlytheobjectsassociatedwithresourcescurrentlypresent

inthephysicalshelf.Afteraresourceisremoved,theobjectsrepresentingtheresource

arenotpreserved.Thus,thevalueofthesaHpiResourceIsHistoricalindexobject,whichis

alsousedtoindexmanytables,isalwaysfalse(2).

ForeachHPIcontrol,theHPIsubagentpopulatesarowinoneofsixdifferenttables:

saHpiCtrlAnalogTable

saHpiCtrlDigitalTable

saHpiCtrlDiscreteTable

saHpiCtrlOemTable

saHpiCtrlStreamTable

saHpiCtrlTextTable

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RadiSys ATCA-4616 Dokumentacja Strona 60