NonStop Operating System Event Management Programming Manual

Interprocessor Bus Event Messages (ZIPB)
HP NonStop Operating System Event Management Programming Manual—520372-020
4-10
Messages
Unconditional Tokens
Cause. Checksum errors were detected on the bus by the receiving processor.
Effect. If more than 10 checksum errors occur in 11 minutes without a single nonerror
completion, the operating system disables reception on the bus that experienced the
checksum errors and issues the ZIPB-EVT-MASKINT (113) event message.
If more than 32 checksum errors accumulate, the operating system disables reception
on the bus that experienced the checksum errors and issues the ZIPB-EVT-MASKINT
(113) event message.
If there are no checksum errors within a two to seven hour period, the
checksum-error counter is decremented by 1 (if it is not already 0).
Recovery. Normally, no recovery action is necessary. If the error continues to occur,
see Recovery Action Requiring Vendor Support
on page 4-6.
104: ZIPB-EVT-BUSUP
A bus to a processor is up.
Token Description
ZEMS-TKN-EVENTNUMBER Event number for this message. Value is ZIPB-EVT-
BUSXSUM (102).
ZIPB-TKN-BUS Is the subject token that specifies the bus. Value is either 0
(X bus) or 1 (Y bus).
ZIPB-TKN-CPU Processor number of the processor that is reporting the bus
error.
ZIPB-TKN-RECVCHECKSUM Number of checksum errors from the problem processor.
ZIPB-TKN-RECVROUTE Number of routing errors from the problem processor.
ZIPB-TKN-RPTCPU Processor number of the processor reporting the bus error;
it is the receiving processor.
ZIPB-TKN-PRBCPU Processor number of the problem processor; it is the
sending processor.
Subject: ZIPB-TKN-BUS
Potentially critical event: No
Action event: No
Message sender: Monitor process
TMDS collector: Yes