2-51
Cisco ONS 15600 SDH Troubleshooting Guide, R8.0
July 2010
Chapter 2 Alarm Troubleshooting
2.6.54 EXT
2.6.54 EXT
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
Logical Object: ENVALRM
A Failure Detected External to the NE alarm occurs because an environmental alarm is present. For
example, a door could be open or flooding might have occurred.
Clear the EXT Alarm
Step 1
Click the
Maintenance > Alarm Extenders > External Alarms
tabs to gather further information about
the EXT alarm.
Step 2
Follow your standard operating procedure to remedy environmental conditions that cause alarms. The
alarm clears when the situation is remedied.
Step 3
If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC (1 800 553-2447).
2.6.55 EXTRA-TRAF-PREEMPT
Default Severity: Major (MJ), Service-Affecting (SA)
Logical Object: STMN
An Extra Traffic Preempted alarm occurs on STM-N cards in two-fiber and four-fiber MS-SPRings when
low-priority traffic directed to the protect system has been preempted by a working system protection
switch.
Clear the EXTRA-TRAF-PREEMPT Alarm
Step 1
Verify that the protection switch has occurred by checking the Conditions tab.
Step 2
If a ring switch has occurred, clear the ring switch on the working system by following the appropriate
alarm in this chapter. For more information about protection switches, refer to the “Maintain the Node”
chapter in the
Cisco ONS 15600 SDH Procedure Guide
.
Step 3
If the alarm occurred on a four-fiber MS-SPRing and the span switch occurred on this STM-N, clear the
span switch on the working system.
Step 4
If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC (1 800 553-2447) to report a Service-Affecting (SA) problem.
2.6.56 FAILTOSW
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
Logical Object: STMN
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