RadiSys ATCA-4616 Specifiche Scaricare il pdf (Pagina 105)

Troubleshooting

105

IPMI frame structure and message flow

TherearenoframesinIPMBmessages.Figure 10showsthemessageflowthroughanSCM

pairforIPMBmessages.

Figure 10. IPMI Message Flow

IPMB bus operation

TwoIPMBbuses(IPMB‐AandIPMB‐B)providetheprimarymeansofcommunication

betweenShMCs.TheactiveShMContheSCMisalsotheIPMCfortheSCMFRU,theCOM‐E,

andtheSCMRTM.TheactiveShMCperformsthesameoperationsotherIPMCsdoto

maintaintheirFRUs.Messagessenttoaddress0x82/0x84LUN0areallprocessedbytheIPMC

portionoftheShMCandarenotforwardedtotheShMS.Inaddition,theShMCperformsthe

tasksofarbitration(determiningactive/standbystate)andforwardingmessagesoverthe

serialinterfacetotheShMS.TheShMCisbasically

asupersetoftheIPMC.

Standby ShMSActive ShMS

Active ShMC

Standby ShMC

HSD

DEL

FRU

Table

FRU

Table

Fwd Event

Handler

Event

Handler

Event

Processors

Event

Processors

SEL

Local

SEL

Local

SEL

1 2 ... 100 101 102 103 104 105 106 107 108 109 110 ... 145 146

Nessun commento

RadiSys ATCA-4616 Specifiche Pagina 105