NonStop Operating System Event Management Programming Manual

Interprocessor Bus Event Messages (ZIPB)
HP NonStop Operating System Event Management Programming Manual—520372-020
4-7
Messages
Unconditional Tokens
Cause. The sending processor detected a problem on the bus.
Effect. If more than 10 send timeouts or resends accumulate in the send timeout or
resend counters in 11 minutes, the operating system shuts down the bus to the
problem processor and issues the ZIPB-EVT-BUSDOWN (101) event message. The
counters are reset to zero if no error is detected for 19.2 seconds.
Recovery. Normally, no recovery action is necessary. If the error continues to occur,
see Recovery Action Requiring Vendor Support
on page 4-6.
Unconditional Tokens
ZEMS-TKN-EVENTNUMBER token-type ZSPI-TYP-INT
ZIPB-TKN-BUS token-type ZSPI-TYP-BYTE
ZIPB-TKN-CPU token-type ZSPI-TYP-UINT
ZIPB-TKN-SENDTIMEOUT token-type ZSPI-TYP-UINT
ZIPB-TKN-SENDRESEND token-type ZSPI-TYP-UINT
ZIPB-TKN-RPTCPU token-type ZSPI-TYP-UINT
ZIPB-TKN-PRBCPU token-type ZSPI-TYP-UINT
Event-Message Text
CPU nn : BUS {X|Y} SEND ERRORS TO CPU nn
Token Description
ZEMS-TKN-EVENTNUMBER Event number for this message. Value is ZIPB-EVT-
BUSSEND (100).
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
event.
ZIPB-TKN-SENDTIMEOUT Number of times that the sending processor received a
condition code CCL (which indicates a timeout) following a
send operation to processor ZIPB-TKN-PRBCPU.
ZIPB-TKN-SENDRESEND Number of times that the sending processor resent the
message before it was accepted.
ZIPB-TKN-RPTCPU Processor number of the processor reporting the bus error;
it is the sending processor.
ZIPB-TKN-PRBCPU Processor number of the problem processor; it is the
receiving processor.