V7122 Gateway User Guide
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Cold Start Trap
The gateway’s technology supports a cold start trap to indicate that the device is starting.
This allows the manager to synchronize its view of the device's active alarms. Two different
traps are sent at start-up:
The 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.
The enterprise acBoardEvBoardStarted which is generated at the end of system
initialization. This is more of an ‘application-level’ cold start sent after the entire initializing
process is complete and all the modules are ready.
Third-Party Performance Monitoring Measurements
Performance measurements are available for a third-party performance monitoring system
(or EMS) through an SNMP interface. These measurements can be polled at scheduled
intervals by an external poller or utility in a media server or other off-device system.
The device provides two types of performance measurements:
Gauges:
Gauges represent the current state of activities on the device. Gauges, unlike
counters, can decrease in value, and like counters, can increase. The value of a gauge is
the current value or a snapshot of the current activity on the device.
Counters:
Counters always increase in value and are cumulative. Counters, unlike
gauges, never decrease in value unless the off-device system is reset. The counters are
then zeroed.
Performance measurements are provided by several proprietary MIBs that are located under
the acPerformance sub tree:
iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).3Com(5003).acPerformance(10)
Two formats of performance monitoring MIBs are available:
Old format (obsolete as of version 4.6):
Each MIB is composed of a list of single MIB objects, each relates to a separate attribute
within a gauge or a counter. All counters and gauges provide the current time value only.
acPerfMediaGateway:
a generic-type of PM MIB that covers:
Control
protocol
RTP
stream
System packets statistics
acPerfMediaServices:
media services devices specific performance MIB.
acPerfH323SIPGateway:
holds statistics on Tel to IP and vice versa.
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