Cisco Systems H.323 Snmp Trap Types, Retrieving and Reporting Alarms, Severity Level Description

Chapter 5 Troubleshooting Cisco HSI Alarms

Alarms Overview

Table 5-1 Alarm Severity Levels

Severity Level	Description
Critical	A serious problem exists in the network. Clear critical alarms immediately.
	A critical alarm should force an automatic restart of the application.
Major	A disruption of service has occurred. Clear this alarm immediately.
Minor	No disruption of service has occurred, but clear this alarm as soon as
	possible.
Informational	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.

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:contmode for the event to be displayed. The event is not displayed in subsequent rtrv-almscommands.

SNMP Trap Types

Alarms have SNMP trap types associated with them. Table 6-2 identifies the trap types.

Table 5-2 SNMP Trap Types

Trap Type	Trap Description
0	No error
1	Communication alarm
2	Quality of service
3	Processing error
4	Equipment error
5	Environment error

	Cisco H.323 Signaling Interface User Guide
5-2	OL-4806-01 Rev. A14