Rmon Alarm and Event Defaults

B. SNMP MIBs, Traps, and RMON Alarm Defaults

The FrameSaver unit supports automatic generation of RMON alarm and event information. Each alarm sets an SNMP variable to monitor. Thresholds are set using the OpenLane SLM System. When the threshold set for the monitored variable is exceeded, an SNMP trap is sent or an event is logged.

Event Defaults

Since all events sent are under the control of the FrameSaver unit, there is no need to define multiple events for each alarm type, so only the following two events need to be generated:

eventIndex	eventDescription	eventType

1	Default SLV Rising Event	log-and-trap(4)

2	Default SLV Falling Event	log-and-trap(4)

The following alarm default tables show how each RMON default alarm is set by the FrameSaver unit, alarm and event types, interval used when generating alarms, and alarm thresholds.

Table B-9, Network Physical Interface Alarm Defaults

Table B-10, Frame Relay Link Alarm Defaults

Table B-11, DLCI Alarm Defaults

See Standards Compliance for SNMP Traps on page B-6for information about how traps work, and Trap: RMON-Specificon page B-13for traps specific to remote monitoring.

Rising Event Operation

If a rising threshold is crossed during the interval shown in a table (e.g., frames dropped by the network), the event is armed and an alarm is generated at the end of the interval. Only one alarm per event per interval is generated. The alarm condition persists until the event has been disarmed (reset).

The event is disarmed when a falling threshold has been crossed and the rising threshold has not been crossed during an interval, allowing the event to return to its original disarmed state.

B-14

December 2002

9700-A2-GB20-20

9720, 9788 specifications

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Paradyne 9788, 9720 manual Rmon Alarm and Event Defaults, EventIndex EventDescription EventType

Models: 9720 9788