SNMP MIBs and Traps, and RMON Alarm Defaults

RMON Alarm and Event Defaults

The FrameSaver unit supports automatic generation of RMON alarm and event information. Each alarm sets an SNMP variable to monitor. When the threshold set for the monitored variable is exceeded, an SNMP trap or a log event is sent.

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

eventCommunity

 

 

 

 

1

Default SLV Rising Event

log-and-trap(4)

0

 

 

 

 

2

Default SLV Falling Event

log-and-trap(4)

0

 

 

 

 

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

HPhysical Interface Alarm Defaults

HFrame Relay Link Alarm Defaults

HDLCI Alarm Defaults ± Paradyne Area

HDLCI Alarm Defaults ± NetScout Area

See Standards Compliance for SNMP Traps for information about how traps work, and Traps: RMON-Specificfor 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.

9123-A2-GB20-00

May 2000

B-15

Page 233
Image 233
Paradyne 9123 Rmon Alarm and Event Defaults, EventIndex EventDescription EventType EventCommunity, Rising Event Operation