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TR3271 EVENT MANAGEMENT
-1: ZCOM-EVT-CPU-SWITCH
ZCOM-TKN-CAUSE-CPU-SWITCH is the reason the CPU was switched to
the backup CPU.
message text.
The possible values are:
Value
ZCOM-VAL-OP-REQ
ZCOM-VAL-HW
ZCOM-VAL-TAKOVR
Volatile Tokens
ZEMS-TKN-CU is a standard EMS token that contains the controller
and unit number.
if the controller uses subchannel-type I/O addressing.
Event-Message Text
In the message text, ldev corresponds to the value of ZEMS-TKN-
LDEV, n,n,%nn,%nnn corresponds to the value of ZEMS-MAP-EXIOADDR,
ldevname corresponds to the value of ZEMS-TKN-LDEVNAME, cpu1
corresponds to the value of ZCOM-TKN-OLD-CPU, cpu2 corresponds
to the value of ZCOM-TKN-NEW-CPU, and reason corresponds to the
value of ZCOM-TKN-CAUSE-CPU-SWITCH.
Probable Cause
The TR3271 I/O process switches to the backup CPU as a result
of a SWITCH command or as a result of a software or hardware
error.
The SWITCH command can be issued programmatically or
interactively.
description of the programmatic SWITCH command.
Recommended Action
If a command caused the switch, no action is necessary.
note the reason code and contact your Tandem representative.
7-64
It corresponds to the value of reason in the
Corresponding Text
OPERATOR REQUESTED
of HARDWARE OR LOW LEVEL
SOFTWARE PROBLEM
TAKEN OVER BY PRIMARY
This token is present in the event buffer only
See Section 6, "Commands and Responses," for a
If not,
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