Configuring the RMON alarm function

When you configure the RMON alarm function, follow these guidelines:

To send notifications to the NMS when an alarm is triggered, configure the SNMP agent as described in "Configuring SNMP" before configuring the RMON alarm function.
For a new event, alarm, or private alarm entry to be created:
- The entry must not have the same set of parameters as an existing entry.
- The maximum number of entries is not reached.

Table 8 shows the parameters to be compared for duplication and the entry limits.

Table 8: RMON configuration restrictions

Entry	Parameters to be compared	Maximum number of entries
Event	Event description (description string) Event type (log, trap, logtrap, or none) Community name (security-string)	60
Alarm	Alarm variable (alarm-variable) Sampling interval (sampling-interval) Sample type (absolute or delta) Rising threshold (threshold-value1) Falling threshold (threshold-value2)	60
Private alarm	Alarm variable formula (prialarm-formula) Sampling interval (sampling-interval) Sample type (absolute or delta) Rising threshold (threshold-value1) Falling threshold (threshold-value2)	50

To configure the RMON alarm function:

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. (Optional.) Create an RMON event entry.	rmon event entry-number [ description string ] { log \| log-trap security-string \| none \| trap security-string } [ owner text ]	By default, no RMON event entries exist.
3. Create an RMON alarm entry.	Create an RMON alarm entry: rmon alarm entry-number alarm-variable sampling-interval { absolute \| delta } [ startup-alarm { falling \| rising \| rising-falling } ] rising-threshold threshold-value1 event-entry1 falling-threshold threshold-value2 event-entry2 [ owner text ] Create an RMON private alarm entry: rmon prialarm entry-number prialarm-formula prialarm-des sampling-interval { absolute \| delta } [ startup-alarm { falling \| rising \| rising-falling } ] rising-threshold threshold-value1 event-entry1 falling-threshold threshold-value2 event-entry2 entrytype { forever \| cycle cycle-period } [ owner text ]	By default, no RMON alarm entries or RMON private alarm entries exist. You can associate an alarm with an event that has not been created yet. The alarm will trigger the event only after the event is created.

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. (Optional.) Create an RMON event entry.

rmon event entry-number [ description string ] { log | log-trap security-string | none | trap security-string } [ owner text ]

By default, no RMON event entries exist.

3. Create an RMON alarm entry.

Create an RMON alarm entry:
rmon alarm entry-number alarm-variable sampling-interval { absolute | delta } [ startup-alarm { falling | rising | rising-falling } ] rising-threshold threshold-value1 event-entry1 falling-threshold threshold-value2 event-entry2 [ owner text ]
Create an RMON private alarm entry:
rmon prialarm entry-number prialarm-formula prialarm-des sampling-interval { absolute | delta } [ startup-alarm { falling | rising | rising-falling } ] rising-threshold threshold-value1 event-entry1 falling-threshold threshold-value2 event-entry2 entrytype { forever | cycle cycle-period } [ owner text ]

By default, no RMON alarm entries or RMON private alarm entries exist.

You can associate an alarm with an event that has not been created yet. The alarm will trigger the event only after the event is created.

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