PrtAlertCodeTC

• Base type Enumeration

The code that describes the type of alert for this entry in the table. Binary change event alerts describe states of the subunit while unary change event alerts describe a single event. The same alert code can be used for a binary change event or a unary change event, depending on implementation. Also, the same alert code can be used to indicate a critical or non-critical (warning) alert, depending on implementation. The value of prtAlertSeverityLevel specifies binary vs. unary and critical vs. non-critical for each event for the implementation. While there are some specific codes for many subunits, the generic codes should be used for most subunit alerts. The network management station can then query the subunit specified by prtAlertGroup to determine further subunit status and other subunit information. An agent shall not add two entries to the alert table for the same event, one containing a generic event code and the other containing a specific event code; the agent shall add only one entry in the alert table for each event; either generic (preferred) or specific, not both. Implementation of the unary change event alertRemovalOfBinaryChangeEntry(1801) is optional. When implemented, this alert code shall indicate to network management stations that the trailing edge of a binary change event has occurred and the corresponding alert entry has been removed from the alert table. As with all events, the alertRemovalOfBinaryChangeEntry(1801) alert shall be placed at the end of the alert table. Such an alert table entry shall specify the following information: prtAlertSeverityLevel warningUnaryChangeEvent(4) prtAlertTrainingLevel noInterventionRequired(7) prtAlertGroup alert(18) prtAlertGroupIndex the index of the row in the alert table of the binary change event that this event has removed. prtAlertLocation unknown (-2) prtAlertCode alertRemovalOfBinaryChangeEntry(1801) prtAlertDescription <description or null string> prtAlertTime the value of sysUpTime at the time of the removal of the binary change event from the alert table. Optionally, the agent may generate a trap coincident with removing the binary change event and placing the unary change event alertRemovalOfBinaryChangeEntry(1801) in the alert table. For such a trap, the prtAlertIndex sent with the above trap parameters shall be the index of the alertRemovalOfBinaryChangeEvent row that was added to the prtAlertTable; not the index of the row that was removed from the prtAlertTable.