3Com Switch 8800 Configuration Guide Chapter 48 RMON Configuration
48-4
Table 48-4 Add/delete an entry to/from the extended RMON alarm table
Operation Command
Add an entry to the extended
RMON alarm table
rmon prialarm entry-number alarm-var
[ alarm-des ] sampling-timer { delta | absolute |
changeratio } rising-threshold threshold-value1
event-entry1 falling-threshold threshold-value2
event-entry2 entrytype { forever | cycle
cycle-period } [ owner text ]
Delete an entry from the
extended RMON alarm table undo rmon prialarm entry-number
After you define the extended alarm entry, the system processes the entry in the
following way:
1) Sampling the defined prialarm-formula according to the time interval
sampling-time that you have set
2) Performing the operation to the sampled value according to the defined formula
prialarm-formula
3) Comparing the resule with the configured threshold and handling them in the way
described in the following table
Table 48-5 Handling the extended alarm entry
Case Processing
The result is greater than the configured
upper limit threshold-value1 The defined event event-entry1 is
triggered
The result is less than the configured lower
limit threshold-value2 The defined event event-entry2 is
triggered
The history data management helps you set the history data collection, periodical data
collection and storage of the specified ports. The sampling information includes the
utilization ratio, error counts and total number of packets.
You can use the following commands to add/delete an entry to/from the history control
table.
Perform the following configuration in Ethernet port view.
Table 48-6 Add/delete an entry to/from the history control table
Operation Command
Add an entry to the history
control table.
rmon history entry-number buckets number
interval sampling-interval [ owner text-string ]