AudioCodes MSBR Series User Manual

CHAPTER1 Introduction
MSBR | SNMP Alarms
Alarm History
The device maintains a history of alarms that have been sent and traps that have been cleared
to allow an EMS to recover any lost raise or clear traps. Two views of the alarm history table are
supported by the agent:
■ acAlarmHistoryTable in the enterprise AcAlarm - a simple, one-row per alarm table, that is
easy to view with a MIB browser.
■ nlmLogTable and nlmLogVariableTable in the standard NOTIFICATION-LOG-MIB
SNMP Traps Overview
This section provides an overview of the SNMP traps.
Standard Traps
The device also supports the following standard traps:
■ authenticationFailure
■ coldStart: The device supports a cold start trap to indicate that the device is starting up.
This allows the OVOC to synchronize its view of the device's active alarms. In fact, two
different traps are sent at start-up:
● Standard coldStart trap: iso(1).org(3).dod(6).internet(1). snmpV2(6). snmpModules(3).
snmpMIB(1). snmpMIBObjects(1). snmpTraps(5). coldStart(1) sent at system
initialization.
● Enterprise acBoardEvBoardStarted: generated at the end of system initialization. This is
more of an "application-level" cold start sent after all the initializing process is over and
all the modules are ready
■ linkDown
■ linkup
■ entConfigChange
■ dsx1LineStatusChange (Applicable only to digital interfaces)
Proprietary Traps
This section provides information on proprietary SNMP traps supported by the device. There is
a separation between traps that are alarms and traps that are not (i.e., logs). All traps have the
same structure made up of the same 16 varbinds (Variable Binding), i.e.,
1.3.6.1.4.1.5003.9.10.1.21.1. For a list of the varbinds, see Trap Varbinds on the next page.
The source varbind is composed of a string that details the device component from which the
trap is being sent (forwarded by the hierarchy in which it resides). For example, an alarm from
an SS7 link has the following string in its source varbind: acBoard#1/SS7#0/SS7Link#6. The SS7
link number is specified as 6 and is part of the only SS7 module in the device that is placed in
- 2 -

AudioCodes MSBR Series Specifications

General

Brand	AudioCodes
Model	MSBR Series
Category	Security System
Language	English