3Com Switch 8800 Configuration Guide Chapter 48 RMON Configuration
48-3
Perform the following configuration in system view.
Table 48-2 Add/delete an entry to/from the alarm table
Operation Command
Add an entry to the alarm table
rmon alarm entry-number alarm-variable
sampling-time { delta | absolute }
rising-threshold threshold-value1
event-entry1 falling-threshold
threshold-value2 event-entry2 [ owner text ]
Delete an entry from the alarm table undo rmon alarm entry-number
After you defined the alarm entry, the system then processes the entry in the following
way:
1) Sampling the defined alarm-variable according to the time interval sampling-time
that you have set
2) Comparing the sampled value with the configured threshold and handling them in
the way described in the following table
Table 48-3 Handling the alarm entry
Case Processing
The sampled value is greater than the
configured upper limit threshold-value1 The defined event event-entry1 is
triggered
The sampled value is less than the
configured lower limit threshold-value2 The defined event event-entry2 is
triggered
You can use the command to add/delete an entry to/from the extended RMON alarm
table. The extended alarm entry performs mathematical operation to the sampled value
of the alarm variable, and then the result will be compared with the configured threshold
to implementing the alarm function.
Note:
Before adding extended alarm entry, you need to define the referenced event in the
extended alarm entry by using the rmon event command.
You can define up to 50 prialarm entries.
Perform the following configuration in system view.