TRENDnet TPE-1620WS User's Guide - Page 63

Con parameters for RMON alarms

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TRENDnet User's Guide Click Add to add the entry to the table. In the list, you can click Modify to modify an entry or click Delete or delete the entry. You can also click Delete All to delete all of the entries in the table. If the entries span multiple pages, you can navigate page number in the Page field and click Go or you can click First, Previous, Next, and Last Page to navigate the pages. 4. Click Save Settings to Flash (menu). 5. Click Save Settings to Flash (button), then click OK. Note: This step saves all configuration changes to the NV-RAM to ensure that if the switch is rebooted or power cycled, the configuration changes will still be applied. TPE-1620WS Configure parameters for RMON alarms RMON > Alarm RMON alarms are used to generate alert messages when packet activity on designated ports rises above or falls below specified threshold values. The alert messages can take the form of messages that are entered in the event log on the switch or traps that are sent to your SNMP NMS software or both. RMON alarms consist of two thresholds. There is a rising threshold and a falling threshold. The alarm is triggered if the value of the monitored RMON statistic of the designated port exceeds the rising threshold. The response of the switch is to enter a message in the event log, send an SNMP trap, or both. The alarm is reset if the value of the monitored statistic drops below the falling threshold. The frequency with which the switch samples the thresholds of an alarm against the actual RMON statistic is controlled by a time interval parameter. You can adjust this interval for each alarm. Here are the three components that comprise RMON alarms: • RMON statistics group: A port must have an RMON statistics group configured if it is to have an alarm. When you create an alarm, you specify the port to which it is to be assigned not by the port number, but rather by the ID number of the port's statistics group. • RMON event: An event specifies the action of the Switch when the ingress packet activity on a port crosses a statistical threshold defined in an alarm. The choices are to log a message in the event log of the Switch, send an SNMP trap to an SNMP workstation, or both. Since there are only three possible actions and since events can be used with more than one alarm, you probably will not create more than three events. • Alarm: The last component is the alarm itself. It defines the port statistic to be monitored and the rising and falling thresholds that trigger the switch to perform an event. The thresholds of an alarm can have the same event or different events. The switch supports up to eight alarms. © Copyright 2013 TRENDnet. All Rights Reserved. 63

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© Copyright 2013 TRENDnet. All Rights Reserved.
TRENDnet User’s Guide
TPE-1620WS
63
Click
Add
to add the entry to the table.
In the list, you can click
Modify
to modify an entry or click
Delete
or delete the entry
.
You can also click
Delete All
to delete all of the entries in the table.
If the entries span
multiple pages, you can navigate page number in the
Page
field and click
Go
or you can
click
First, Previous, Next,
and
Last Page
to navigate the pages.
4. Click
Save Settings to Flash (menu)
.
5. Click
Save Settings to Flash (button)
, then click
OK.
Note:
This step saves all configuration changes to the NV-RAM to ensure that if the
switch is rebooted or power cycled, the configuration changes will still be applied.
Configure parameters for RMON alarms
RMON > Alarm
RMON alarms are used to generate alert messages when packet activity on designated
ports rises above or falls below specified threshold values. The alert messages can take
the form of messages that are entered in the event log on the switch or traps that are
sent to your SNMP NMS software or both.
RMON alarms consist of two thresholds. There is a rising threshold and a falling
threshold. The alarm is triggered if the value of the monitored RMON statistic of the
designated port exceeds the rising threshold. The response of the switch is to enter a
message in the event log, send an SNMP trap, or both. The alarm is reset if the value of
the monitored statistic drops below the falling threshold.
The frequency with which the switch samples the thresholds of an alarm against the
actual RMON statistic is controlled by a time interval parameter. You can adjust this
interval for each alarm.
Here are the three components that comprise RMON alarms:
•
RMON statistics group:
A port must have an RMON statistics group configured
if it is to have an alarm. When you create an alarm, you specify the port to
which it is to be assigned not by the port number, but rather by the ID number
of the port’s statistics group.
•
RMON event:
An event specifies the action of the Switch when the ingress
packet activity on a port crosses a statistical threshold defined in an alarm. The
choices are to log a message in the event log of the Switch, send an SNMP trap
to an SNMP workstation, or both. Since there are only three possible actions
and since events can be used with more than one alarm, you probably will not
create more than three events.
•
Alarm:
The last component is the alarm itself. It defines the port statistic to be
monitored and the rising and falling thresholds that trigger the switch to
perform an event. The thresholds of an alarm can have the same event or
different events. The switch supports up to eight alarms.