AudioCodes MSBR Series User Manual

CHAPTER1 Introduction
MSBR | SNMP Alarms
1 Introduction
This document describes the Simple Network Management Protocol (SNMP) traps (events and
alarms) that can be sent by AudioCodes Multi-Service Business Routers (MSBR), referred here-
after as device.
● The SNMP MIB manual is supplied in the Software Release Package delivered
with the device.
● For configuring SNMP through the Web interface, see the device's User's
Manual.
Carrier-Grade Alarm System
The basic alarm system has been extended to a carrier-grade alarm system. A carrier-grade
alarm system provides a reliable alarm reporting mechanism that takes into account EMS
outages, network outages, and transport mechanism such as SNMP over UDP.
A carrier-grade alarm system is characterized by the following:
■ The device allows an EMS to determine which alarms are currently active in the device.
That is, the device maintains an active alarm table.
■ The device allows an EMS to detect lost alarms and clear notifications [sequence number in
trap, current sequence number MIB object]
■ The device allows an EMS to recover lost alarm raise and clear notifications [maintains a log
history]
■ The device sends a cold start trap to indicate that it is starting. This allows the EMS to
synchronize its view of the device's active alarms.
When the SNMP alarm traps are sent, the carrier-grade alarm system does not add or delete
alarm traps as part of the feature. This system provides the mechanism for viewing of history
and current active alarm information.
Active Alarm Table
The device maintains an active alarm table to allow an EMS to determine which alarms are
currently active in the device. Two views of the active alarm table are supported by the agent:
■ acActiveAlarmTable in the enterprise AcAlarm
■ alarmActiveTable and alarmActiveVariableTable in the IETF standard AcAlarm MIB (rooted
in the MIB tree)
The acActiveAlarmTable is a simple, one-row per alarm table that is easy to view with a MIB
browser.
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AudioCodes MSBR Series Specifications

General

Brand	AudioCodes
Model	MSBR Series
Category	Security System
Language	English