14-2
Cisco ONS 15454 Reference Manual, R7.0
78-17191-01
Chapter 14 Alarm Monitoring and Management
14.3 14.3 Alarm Information
The ONS 15454 has a one-button update for some commonly viewed alarm counts. If you press the Slot
button once and then wait eight seconds, the display automatically changes from a slot alarm count to a
slot alarm summary. If you press the Port button to toggle to port-level display, you can use the Port
button to toggle to a specific slot and to view each port’s port-level alarm count. Figure 14-1 shows the
LCD panel layout.
Figure 14-1 Shelf LCD Panel
14.3 Alarm Information
You can use the Alarms tab to view card, node, or network-level alarms. The Alarms window shows
alarms in conformance with Telcordia GR-253. This means that if a network problem causes two alarms,
such as loss of frame (LOF) and loss of signal (LOS), CTC only shows the LOS alarm in this window
because it supersedes LOF. (The LOF alarm can still be retrieved in the Conditions window.)
The Path Width column in the Alarms and Conditions tabs expands upon alarmed object information
contained in the access identifier (AID) string (such as “STS-4-1-3”) by giving the number of STSs
contained in the alarmed path. For example, the Path Width will tell you whether a critical alarm applies
to an STS1 or an STS48c. The column reports the width as a 1, 3, 6, 12, 48, etc. as appropriate,
understood to be “STS-N.”
Table 14-1 lists the column headings and the information recorded in each column.
FAN FAIL
Slot

8/18/03

04.06-002L-10

24˚C

97758
CRIT MAJ MIN
Status Port
Table 14-1 Alarms Column Descriptions
Column Information Recorded
Num Num (number) is the quantity of alarm messages received, and is incremented
automatically as alarms occur to display the current total of received error messages.
(The column is hidden by default; to view it, right-click a column and choose Show
Column > Num.)
Ref Ref (reference) is a unique identification number assigned to each alarm to reference a
specific alarm message that is displayed. (The column is hidden by default. To view it,
right-click a column and choose Show Column.)
New Indicates a new alarm. To change this status, click either the Synchronize button or the
Delete Cleared Alarms button.
Date Date and time of the alarm.
Node Shows the name of the node where the condition or alarm occurred. (Visible in network
view.)
Object TL1 AID for the alarmed object. For an STSmon or VTmon, this is the monitored STS
or VT object.
Eqpt Type Card type in this slot.