Chapter 17 Managing System Commands
Avaya M770 ATM Switch User’s Guide 229
Viewing a list of fatal system exceptions
A fatal system exception occurs when the CPU detects an error such as a division by
zero, or accesses to non-existent memory. A fatal exception causes the M770 ATM
Switch to reboot. A breakpoint is a special type of exception which is invoked by the
M770 ATM Switch software when it detects an internal inconsistency.
To dump a list of fatal system exceptions, use the system breaklog command.
Note: The breaklog provides vital information for diagnosing why the M770 ATM
Switch has crashed. This information needs to be reported to Avaya Technical Support.
Clearing the list of fatal system exceptions
To clear the list of fatal system exceptions, use the system breaklog clear
command.
Controlled shutdown of the module
This command is used for a co ntrolled shutdown of a module, any connections that
still remain on the module will be lost. A warning to this effect is displayed and
confirmation is requested before the module is powered down.
To carry out a controlled shutdown of the module in preparation for a power down,
use the system halt command.
Command: M15-155s8:/>system breaklog
Output: Filename:lmaux.c
Line No: 553
pml_time: 1234
Abs_time: Unknown
Stablised Count: 0
Reason: 0000b024
epc: c005dce4
badva: c8681734
Command: M15-155s8:/>system breaklog clear
Command: M15-155s8:/>system halt
Output: This will stop the module, losing all connections - do
you want to continue (y/n)?