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• Platform Adaptation — RMON supports all Dell Networking chassis and all Dell Networking Ethernet
interfaces.
Setting the RMON Alarm
To set an alarm on any MIB object, use the rmon alarm or rmon hc-alarm command in GLOBAL
CONFIGURATION mode.
• Set an alarm on any MIB object.
CONFIGURATION mode
[no] rmon alarm number variable interval {delta | absolute} rising-threshold
[value event-number] falling-threshold value event-number [owner string]
OR
[no] rmon hc-alarm number variable interval {delta | absolute} rising-
threshold value event-number falling-threshold value event-number [owner
string]
Configure the alarm using the following optional parameters:
– number: alarm number, an integer from 1 to 65,535, the value must be unique in the RMON Alarm
Table.
– variable: the MIB object to monitor — the variable must be in SNMP OID format; for example,
1.3.6.1.2.1.1.3. The object type must be a 32-bit integer for the rmon alarm command and 64 bits
for the
rmon hc-alarm command.
– interval: time in seconds the alarm monitors the MIB variable, the value must be between 1 to
3,600.
– delta: tests the change between MIB variables, this option is the alarmSampleType in the RMON
Alarm table.
– absolute: tests each MIB variable directly, this option is the alarmSampleType in the RMON Alarm
table.
– rising-threshold value: value at which the rising-threshold alarm is triggered or reset. For
the rmon alarm command, this setting is a 32-bits value, for the rmon hc-alarm command, this
setting is a 64-bits value.
– event-number: event number to trigger when the rising threshold exceeds its limit. This value is
identical to the alarmRisingEventIndex in the alarmTable of the RMON MIB. If there is no
corresponding rising-threshold event, the value should be zero.
– falling-threshold value: value at which the falling-threshold alarm is triggered or reset. For
the rmon alarm command, this setting is a 32-bits value, for the rmon hc-alarm command this
setting is a 64 bits value.
– event-number: event number to trigger when the falling threshold exceeds its limit. This value is
identical to the alarmFallingEventIndex in the alarmTable of the RMON MIB. If there is no
corresponding falling-threshold event, the value should be zero.
– owner string: (Optional) specifies an owner for the alarm, this setting is the alarmOwner object
in the alarmTable of the RMON MIB. Default is a
null-terminated string.
Example of the rmon alarm Command
To disable the alarm, use the no form of the command.
The following example configures RMON alarm number 10. The alarm monitors the MIB variable
1.3.6.1.2.1.2.2.1.20.1 (ifEntry.ifOutErrors) once every 20 seconds until the alarm is disabled, and checks the
rise or fall of the variable. The alarm is triggered when the 1.3.6.1.2.1.2.2.1.20.1 value shows a MIB counter
764
Remote Monitoring (RMON)