Contents

1   Introduction

This document gives an overview of the notification HeartBeat.

2   Notification Description

The COM Fault Management (FM) regularly sends out heartbeats to the management system. The frequency of the heartbeats can be configured with the eriAlarmHbInterval object in the Ericsson Alarm Management Information Base (MIB) or with the ECIM FM Managed Object Model (MOM). eriAlarmHbInterval is in seconds and setting it to 0 disables the heartbeats.

The heartbeat notification is sent every eriAlarmHbInterval. Managers can subscribe to the notification using the Simple Network Management Protocol (SNMP) framework MIBs by using the snmpNotifyName " heartbeat".

The heartbeat notification is sent with an interval according to the eriAlarmHbInterval. It contains the last sequence numbers used for alarms and alarm events. These varbinds can be used to detect lost notifications.

The following is a list of the notification attributes:

Attribute	Attribute Value
eriAlarmActiveLastSequenceNo	The sequence number of the last sent alarm
eriAlarmAlertLastSequenceNo	The sequence number of the last sent alert
eriAlarmActiveLastChanged	The date-time when the last alarm was sent
eriAlarmAlertLastChanged	The date-time when the last alert was sent

COM also supports all SNMP protocol primitives:

• get
• set
• getnext
• getbulk
• traps
• informs