Configure Rmon - 3Com 7700 Configuration Manual

32 C 11: S M
HAPTER YSTEM

Configure RMON

ANAGEMENT
exchange data information with SNMP Agent and collect NM information.
However, not all the data of RMON MIB can be obtained with this method,
depending on resources. In most cases, only four groups of information can be
collected. The four groups include trap information, event information, history
information and statistics information.
The Ethernet Switch implements RMON in the second method. With the
RMON-supported SNMP Agent running on the network monitor, NMS can obtain
such information as the overall traffic of the segment connected to the managed
network device port, the error statistics and performance statistics, thereby
implementing the management (generally remote management) over the
network.
RMON configuration includes:
Adding and Deleting an Entry to or from the Alarm Table
■
Adding and Deleting an Entry to or from the Event Table
■
Adding and Deleting an Entry to or from the History Control Table
■
Adding and Deleting an Entry to or from the Extended RMON Alarm Table
■
Adding and Deleting an Entry to or from the Statistics Table
■
Adding and Deleting an Entry to or from the Alarm Table
RMON alarm management can monitor the specified alarm variables such as
statistics on a port. When a value of the monitored data exceeds the defined
threshold, an alarm event will be generated. Generally, the event will be recorded
in the device log table and a Trap message will be sent to NMS. The events are
defined in event management. The alarm management includes browsing, adding
and deleting alarm entries.
You can use the following commands to add/delete an entry to/from the alarm
table.
Perform the following configuration in system view.
Table 59 Add/Delete an Entry to/from the Alarm Table
Operation
Add an entry to the alarm table.
Delete an entry from the alarm
table.
Adding and Deleting an Entry to or from the Event Table
RMON event management defines the event ID and handling of the event by
keeping logs, sending Trap messages to NMS or performing both at the same
time.
You can use the following commands to add/delete an entry to/from the event
table.
Command
rmon alarm entry-number alarm-variable sampling-time
{ delta | absolute } rising-threshold threshold-value1
event-entry1 falling-threshold threshold-value2
event-entry2 [ owner text ]
entry-
undo rmon alarm number