Avaya M770 Manuel D’Utilisation

Appendix B

Using BOOT Loader

280

Avaya M770 ATM Switch User’s Guide

A fatal system exception occurs when the Central Processing Unit (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. 

The breaklog provides vital information for diagnosing why the M770 ATM 

Switch has crashed. This information needs to be reported to Avaya Technical 
Support.

To clear the list of fatal system exceptions, use the

system breaklog clear

 

command. 

You can run all the non-critical hardware tests on a M770 ATM Switch. If all the 
tests pass the M770 ATM Switch will respond with DONE! 
If a test fails, then the BOOT Loader will display the test that has the failed and the 
M770 ATM Switch LEDs will display the sequence that represents the error. For 
more information about the LED status sequence, see the Module Installation 
Guides.
To run all hardware tests, use the

system test

 

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 test

Output example
when all tests pass:

Done!

Output example
when there is a failure:

The boot loader SELF-TEST failed