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Viewing Events and Alarms

Viewing Events and Alarms

This chapter describes the various ways that you can view events in ViewRunner, presents the event severity guidelines and alarm and event status changes, and includes examples of module alarm events that are associated with Cisco 6100 Series systems.

This chapter includes the following sections:

Viewing Events

On the ViewRunner graphical user interface (GUI), you can view events that the Cisco 6100 Series system generates by using the methods described in the following sections:

Viewing Events Through the Event History View Dialog Box

In ViewRunner, use the Event History dialog box to show all of the events that were asserted and cleared for a particular Cisco 6100 Series system.

During each session ViewRunner software polls the node for new events at 15-second intervals. This interval is the default setting. You can change this polling interval by following these steps:


Step 1 Choose ViewRunner Preferences from the Options menu on the ViewRunner menu bar.

The ViewRunner Preferences dialog box opens, shown in Figure 9-1.


Figure 9-1: ViewRunner Preferences Dialog Box


Step 2 Increase or decrease the polling interval on the ViewRunner Preferences dialog box by using the up and down arrows in the Alarms and Events group box polling field.

The range is 15 to 120 seconds.



Note ViewRunner displays in the Event History only the events that are asserted by the Cisco 6100 Series system or that ViewRunner generates. It does not report events from other network elements in the end-to-end ATM connection.

Node Event Queue

The Cisco 6100 Series system node saves no more than 200 events at one time. It begins with number 1, and then increments indefinitely. When the node event log has more than 200 events, the software removes the oldest event in the queue, event 1, and adds the newest event to the bottom of the queue as event 201. Therefore, depending on the number of generated events, the node queue could begin with event 101 and end with event 300.

ViewRunner Event Save

ViewRunner can save more than 200 events at a time. If, for example, the Cisco 6100 Series node event queue shows events 101 through 300, ViewRunner could be displaying events 50 through 300. (The number of events in the ViewRunner display depends on how long the ViewRunner session has been active and on what the node was showing at the time the session began.)

Node and ViewRunner Event Display

The event numbers for the Cisco 6100 Series system display and the ViewRunner display correspond. For example, event 50 in the Cisco 6100 Series system display corresponds to event 50 in the ViewRunner display. The system controller module must remove events at the node or between ViewRunner sessions or polls. After the system controller module removes events from the top of the queue, they do not appear in the ViewRunner display. For example, if more than 200 events occur between consecutive ViewRunner sessions, you do not see those that are already removed from the node queue when you begin the new ViewRunner session. ViewRunner generates an alarm indicating that events have been missed during the current poll.

If ViewRunner detects a system controller module reset during an active session, ViewRunner removes all displayed events from the Event History dialog box and displays only those events that occur after the reset. After a system controller reset, the Cisco 6100 Series system node loses event history and begins numbering again at 1.

Figure 9-2 shows an example of the ViewRunner Event History dialog box.


Figure 9-2: Example of an Event History Dialog Box



Note After you open the Event History dialog box, you cannot close it. (Notice that the x in the upper right corner of the dialog box is dimmed). You can, however, minimize the dialog box by clicking the - icon in the upper right corner.

Logical service-oriented navigation is available in the Event History dialog box. Click the blue, underlined text, and ViewRunner takes you to the Module Properties dialog box of the chassis, slot, and port from which the event was asserted.

The columns in the Event History dialog box are described in Table 9-1.


Table 9-1: Event History Dialog Box Column Definitions
Column Description

Sequence Id

Displays the sequence number of the event in the ViewRunner Event History dialog box for this session. This column also contains an alarm icon in which the color indicates the severity of the event as follows:

  • Red---Critical alarm event asserted

  • Orange---Major alarm event asserted

  • Yellow---Minor alarm event asserted

  • Green---Critical alarm event cleared, Major alarm event cleared, and Minor alarm event cleared

  • Blue---Undefined

Severity

Displays the severity level of the event. Event severities are classified as follows:

  • Critical alarm event---More than 128 customer lines are out of service.

  • Major alarm event---More than 24 customer lines are out of service.

  • Minor alarm event---2 to 23 customer lines are out of service.

  • Information event---Not an alarm event and does not affect subscriber service.

  • Undefined---The format of the data returned from the node was faulty.


Note Service outage is defined as either line down or no cell throughput. Service impairment is defined as cell loss that is not associated with network congestion, but is great enough to result in a noticeable throughput loss.

Normally, an alarm event causes a service impairment or a service outage. However, some alarm events cause no effect to service. A service impairment typically results in a loss of end-to-end traffic for some number of subscriber connections (one to several) for a brief period of time (milliseconds to seconds, but normally less than one minute unless repeat occurrences are encountered). A service outage is the absolute loss of the ability to connect one or more subscribers.

Log Time

Identifies the date and time when the event occurred.

Entity

The module against which the event is asserted. You can use the information in this field to help locate the event in the Cisco 6100 Series with NI-1 Alarm Summary Guide. The entity can be any one of the following items:

  • CAP ATU-C module

  • Flexi

  • System controller module

  • Network interface module

  • LIM1 controller

  • LIM

  • Slot

  • ViewRunner

  • Unknown (An Unknown entity appears only if the data format from the node is faulty.)

AID2

Corresponds to the chassis and slot number that are associated with the event. You can use the information in this field to pinpoint the source of the event and thus isolate the problem. ViewRunner displays Unknown in the AID field if an entity that you later delete asserts an event. ViewRunner also displays Unknown in the AID field if you add an entity that ViewRunner has not yet discovered at the time the event was generated.

To go directly to the entity and slot location in which the event is received, click the underlined text in this field.

Status

Displays the current status of the event, which can be one of the following types:

  • Asserted---An event has been generated by an entity.

  • Cleared---A previously asserted alarm event has been cleared.

  • Info---This event is an information event.

  • Undefined---The format of the data returned from the node was faulty.

Description

Briefly describes the event. This field corresponds to one of the descriptions that are listed in the system event definitions tables in the Cisco 6100 Series with NI-1 Alarm Summary Guide. This description is a predefined string based on the entity and event code from the node.

1LIM = line interface module
2AID = access identifier

Sorting Events

To sort the contents of the ViewRunner Event History dialog box according to any one of the fields in Table 9-1, go through the following steps:


Step 1 Click the field header (such as AID, Log Time, or Severity).

Step 2 If you click more than one column heading, you can nest the results of sort operations.

The order in which you select headings determines the order in which results are nested. If more entries can fit in the dialog box, a scroll bar appears, allowing you to scroll through the entries.


Removing Events

To remove events from the display, go though the following steps:


Step 1 Choose the events and remove them from the Event History dialog box.

To choose an event, click the Sequence Id number of each row (see Figure 9-3). Use the Shift or Ctrl key to choose multiple events.


Figure 9-3: Event Selected for Removal


Step 2 To remove an event, highlight it, and then click the X icon (Remove events from view icon) on the toolbar.

If you remove an event from the Event History dialog box, it still remains in the Cisco 6100 Series system. The event that you remove is removed only from the Event History dialog box display.


Current Alarms Dialog Box

The Current Alarms dialog box lists all of the currently asserted alarm events in the system, including module, slot, and image alarm events. The dialog box format is similar to that of the Event History dialog box. Figure 9-4 shows an example of the Current Alarms dialog box.


Figure 9-4: Current Alarms Dialog Box


You can retrieve and display current alarm events either when you first open the dialog box or after you refresh the screen. To retrieve the most current alarm events, you can set a smaller polling interval in the ViewRunner Preferences dialog box. Go through these steps:


Step 1 Choose ViewRunner Preferences from the Options menu to open the ViewRunner Preferences dialog box (see
Figure 9-5).


Figure 9-5: ViewRunner Preferences Dialog Box---Interval Poll Settings



Note You can update the Current Alarms dialog box yourself by clicking the red, circular Discover icon in the far left corner of the Current Alarms dialog box toolbar.

Step 2 In the Current Alarms dialog box, click the blue underlined text to navigate to the Module Properties dialog box of the chassis, slot, and port from which the alarm event was asserted.



Note After you open the Current Alarms dialog box, you cannot close it. (Notice that the x in the upper right corner of the dialog box is dimmed.) You can, however, minimize the dialog box by clicking the - icon in the upper right corner.

Viewing Alarms Using the Command Line Interface

To view alarms for the Cisco 6100 Series system, use the command line interface (CLI). For information on the command syntax and use of the CLI, see the "Using the Command Line Interface" section, and also refer to the ViewRunner for Windows Installation and Administration Guide.

The following examples of CLI commands display alarms on various Cisco 6100 Series system components.

    show alarms
    show alarms sys
     
    
    show alarms curtained sys
    

    show alarms chassis L.3
    

    show alarms min chassis L
    

    show alarms atuc M.1.12
    

    show alarms crit lp L.2.12.2
    

Note If you are running ViewRunner for Windows Release 2.0, the valid command is show alarms with all of its options.


Note For more information on events and alarm events, including descriptions of all Cisco 6100 Series system alarm events and corrective actions, refer to the Cisco 6100 Series with NI-1 Alarm Summary Guide.

Understanding Event Severity---Overview and Purpose

The Cisco 6100 Series system generates the following types of events, which you can view on the ViewRunner GUI:

The following sections describe the criteria for each of these event types.

Guidelines for Information Events

The following criteria apply to information events:

Criteria for Alarm Severity

Alarm severity is based on criteria set forth in TR-NWT-000057, Functional Criteria for DLC Systems. These criteria are as follows:

Normally, an alarm event causes a service impairment or a service outage. However, some alarm events cause no effect to service. A service impairment typically results in a loss of end-to-end traffic for some number of subscriber connections (one to several) for a brief period of time (milliseconds to seconds, but normally less than one minute unless repeat occurrences are encountered). A service outage is the absolute loss of the ability to connect one or more subscribers.

In the ViewRunner Event History dialog box, alarm events are followed by an additional event showing a Cleared event status, which means the alarm event is corrected.

Table 9-1 describes the criteria for the three types of alarm events.


Table 9-2: Alarm Severity Criteria
Alarm Type Criteria

Critical

Service outage severities are coded as either a major alarm event or a critical alarm event, depending on the number of subscribers that are affected. If more than four subscribers are out of service, the event is a critical alarm event.

Major

Service outage severities are coded as either a major alarm event or a critical alarm event, depending on the number of subscribers that are affected. If four or fewer subscribers are out of service, the event is a major alarm event.

Minor

The following guidelines distinguish minor alarm events:

  • Even though the loss of a CAP ATU-C or STU-C module does not necessarily affect any customer lines (if other modems in the logical pool are idle), a minor alarm event is generated. Because the loss of a module can affect service levels for all subscribers in a given logical pool, a minor alarm event typically triggers a craft recovery action.

  • All service impairments are minor alarm events. The rationale for this rule is that if a single event of this nature occurs, the system can recover quickly enough for the event and the recovery to be transparent to the affected subscriber(s).

  • Events that do not affect service are coded as minor alarm events. These events include those that are not directly associated with service impairment or loss, but that should be resolved nonetheless.

Alarm and Event Status Changes

Alarm events that the Cisco 6100 Series system asserts result in the following actions:

    1. A cleared event

    2. An information event---In effect, clears all alarm events associated with a particular entity at a particular slot

You can clear some alarm events if congestion or a single parity error caused the problem. At other times, you must reset or reinsert the module that generated the alarm event. In this case, the only event returned is Event 128, "Module was detected," which clears whatever outstanding alarm events were asserted against that module.

Chassis Alarms

ViewRunner for Windows Release 3.0.0 supports two chassis alarm events. Both of these alarms are critical and they both report fan tray status. You can view chassis alarms in the Event History dialog box or in the Current Alarms dialog box. The Cisco 6100 Series system supports a fan tray if you use flexi ATU-C (CAP or DMT) or DMT-2 ATU-C modules.


Note References here to modules or to CAP ATU-C modules include all modules supported by the Cisco 6100 Series system (CAP ATU-C, STU-C, and DMT-2 ATU-C modules).

The first alarm, Fan Failure, occurs when you have clicked the Fan Tray Present checkbox on the 6100 Properties dialog box, shown in Figure 9-6, but a fan tray is not present.


Figure 9-6: 6100 Properties Dialog Box---Configuration Tab


The second alarm, Fan Required, occurs when you have configured a module that requires a fan tray, such as the DMT-2 ATU-C module, and the software cannot detect a fan tray. In this case, the DMT-2 ATU-C module detrains and issues a corresponding critical module alarm.

Examples of Module Alarms

You can open the appropriate Module Properties dialog box for the alarm in one of three ways:

Figure 9-7 shows the Subtend Host Module Properties dialog box Port Status tab showing an alarm.


Figure 9-7: Subtend Host Module Dialog Box Port Status Tab Showing Alarm


Figure 9-8 shows the Network Interface Module Properties dialog box Status tab with an alarm.


Figure 9-8: Network Interface Module in Alarm



Note For more information on events and alarm events, including descriptions of all Cisco 6100 Series system alarm events and corrective actions, refer to the Cisco 6100 Series with NI-1 Alarm Summary Guide.


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Posted: Mon Feb 14 16:36:30 PST 2000
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