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This chapter describes the configuration of network management for central office alarms.
Central Office Alarms
This chapter provides an introductory overview of central office alarms followed by a listing of event types that trigger alarms and a detailing of the commands that allow you to control audible and visual alarm indicators and display alarms.
Introduction
Central office alarms report the occurrence of events such as a component failure or various temperature thresholds being exceeded. Alarms originate in either a bay controller or server. The alarm task resides in the bay controller and is responsible for setting and clearing of alarms as well as maintaining an alarm database. A DB-15 connector on the bay controller provides you with the ability to connect the visual and audible alarms to your central office system.
There are three levels of central office alarms: critical, major and minor. A critical alarm indicates a severe, service-affecting condition occurred and requires immediate corrective action. Major alarms indicate serious hardware or software conditions such as disruption of service or failure of an important circuit. A major alarm requires immediate attention to restore full system performance, but has less immediate impact on service or system operation than a critical alarm. A minor alarm indicates the problem does not have a serious affect on service to customers or indicates trouble with a circuit that is not essential to system operation.
The central office alarms are both visual and audible. Three labeled LEDs located on the Avici router bay are used to visually display alarms. The critical and major LEDs are red; the minor LED is amber. LEDs are not cleared until all detected events for the indicated level have been cleared. Audible bells can be connected in the central office. For each alarm, the appropriate LED on the bay, as well as visual and sound combination in the central office, activate whether the origins of the alarm event is the server or bay controller. A message is logged when an alarm occurs.
IPriori provides CLI commands to silence alarms that are sounding, display alarms, and to test the Avici router bay LEDs.
Events
This section lists the event types that trigger critical, major, or minor alarms and which component determines that the event has occurred. Alarms originate in either the bay controller or the server. The component that determines the event has occurred causes the audible alarm to trigger, the appropriate LED to illuminate, and a message is logged. The same component is also responsible for detecting that the condition no longer exists and for the clearing of the audible and visual alarm in the central office and the illuminated LED on the Avici router bay. The following table lists the possible alarm types by severity level and generating component.
Table 11-2. Bay Temperature Thresholds
Severity Level Threshold Temperature Minor
45 c
Major
50 c
Critical
60 c
Table 11-3. Module Temperature Thresholds
Severity Level Threshold Temperature Minor
65 c
Major
69 c
Critical
73 c
Silencing an alarm
You silence all audible central office alarms for a Avici router by invoking the silence co-alarms command in privileged mode. This command does not affect the status of LEDs on the Avici router bay or in the central office. These LEDs remain illuminated until the event that caused the alarm is fixed or clears itself, unless there is another event of the same severity level that still exists. Audible alarms automatically silence if all the conditions that caused them clear.
The following example silences all audible alarms for this Avici router:
router>enable
router#silence co-alarms
Pushing the alarm cutoff button on the Avici router bay provides the same function as this command.
Testing Central Office LEDs
You can perform a test of the central office LEDs. The test lights the critical, major, and minor LEDs on the Avici router bay for 10 seconds and then turns the LEDs off. Use the service led-test command in the privileged command mode to run the test.
In the following example the service led-test command lights the central office critical, major, and minor LEDs on the Avici router:
router>enable
router#service led-test
You can also light the Avici router bay LEDs by pushing the led test button. The lights will only remain lit while the button is depressed.
Clearing Alarms for a Removed Module
If a module is removed and a new module is plugged in, any central office alarms for the old module are automatically removed. If a module is removed and another module is not plugged in, the alarms continue to be stored. The alarms can be removed by issuing a no module command in configuration mode.
Displaying Alarms
You can display all active central office alarms or you can display active alarms by severity level. All alarm displays have the same format: event description, alarm severity, the affected component and bay number. See Table 11-1 for a listing of event descriptions along with the severity level associated with the event. Table 11-4 lists commands that provide for the display of active central office alarms. You must be in privileged mode to use show co-alarms commands. If there are no alarms, a message displays: "There are no active Central Office Alarms."
Table 11-4. Display Alarm Commands
Command Description show co-alarms [all]
Display all active central office alarms
show co-alarms critical
Displays all active critical central office alarms
show co-alarms major
Displays all active major central office alarms
show co-alarms minor
Displays all active minor central office alarms
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Copyright © 2005
Avici Systems Inc.
Avici® and TSR®
is a registered trademark of Avici Systems Inc.
IPriori™, Composite Links™, SSR™, QSR, and NSR® are
trademarks of Avici Systems Inc.
Source
File Name: COconfig.fm
HTML File Name: COconfig.html
Last Updated: 02/25/05 at 15:19:37