V6100 and V7122 User Guide 359Cold Start TrapV7122 technology supports a cold start trap to indicate that the device is starting. This allowsthe manager to synchronize its view of the device's active alarms. Two different traps aresent 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 atsystem initialization. The enterprise acBoardEvBoardStarted which is generated at the end of systeminitialization. This is more of an ‘application-level’ cold start sent after the entire initializingprocess is complete and all the modules are ready.Third-Party Performance Monitoring MeasurementsPerformance measurements are available for a third-party performance monitoring systemthrough an SNMP interface. These measurements can be polled at scheduled intervals byan 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, unlikecounters, can decrease in value, and like counters, can increase. The value of a gauge is thecurrent 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 underthe ‘performance’ 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 attributewithin 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 protocolRTP streamSystem packets statistics acPerfMediaServices - Media services devices specific performance MIB. acPerfH323SIPGateway – holds statistics on Tel to IP and vice versa.
