Retrieving And Reporting Alarms; Informational Event Requirements; Snmp Trap Types; C H A P T E R 5 Troubleshooting Cisco Hsi Alarms - Cisco Signaling Interface H.323 User Manual

Alarms Overview

Table 5-1
Severity Level
Critical
Major
Minor
Informational

Retrieving and Reporting Alarms

Events with a severity level of critical, major, or minor are classified as alarms and can be retrieved
through the Man-Machine Language (MML) interface and a Simple Network Management Protocol
(SNMP) manager.
An alarm must be reported when an alarm state changes (assuming the alarm does not have an unreported
severity).

Informational Event Requirements

Informational events do not require state changes. An informational event is a warning that an abnormal
condition that does not require corrective action has occurred. An invalid protocol call state transition is
an example of an informational event. The informational event needs to be reported, but it is transient.
No corrective action is required by the management center to fix the problem.
An informational event is reported once, upon occurrence, through the MML and SNMP interfaces. The
MML interface must be in the rtrv-alms:cont mode for the event to be displayed. The event is not
displayed in subsequent rtrv-alms commands.

SNMP Trap Types

Alarms have SNMP trap types associated with them. Table 6-2 identifies the trap types.
Table 5-2
Trap Type
0
1
2
3
4
5
Cisco H.323 Signaling Interface User Guide
5-2
Alarm Severity Levels
Description
A serious problem exists in the network. Clear critical alarms immediately.
A critical alarm should force an automatic restart of the application.
A disruption of service has occurred. Clear this alarm immediately.
No disruption of service has occurred, but clear this alarm as soon as
possible.
An abnormal condition has occurred. It is transient and does not require
corrective action. (An invalid protocol call state transition is an example of
an event that prompts such an alarm.) No corrective action is required by
the management center to fix the problem.
SNMP Trap Types
Trap Description
No error
Communication alarm
Quality of service
Processing error
Equipment error
Environment error
Chapter 5 Troubleshooting Cisco HSI Alarms
OL-4806-01 Rev. A14