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T-Series Traffic Director Installation, Configuration and Administration Guide
Chapter 5 Administration
Generating SNMPv1 and SNMPv2 Traps
You can configure the T1000 to generate asynchronous events, which are called traps. The
traps are generated whenever there are abnormal conditions on the T1000. The traps are sent
to a remote device called a trap listener. This helps administrators monitor the T1000 and
respond promptly to any issues.
The T1000 provides a set of condition entities called SNMP alarms. When the condition in
any SNMP alarm is met, the T1000 generates SNMP trap messages that are sent to the
configured trap listeners. For example, when the LOGIN-FAILURE alarm is enabled, a trap
message is generated and sent to the trap listener whenever there is a login failure on the
T1000 appliance.
To configure the T1000 to generate traps, you need to enable and configure alarms. Then,
you specify trap listeners to which the T1000 will send the generated trap messages.
Enabling or Disabling an SNMP Alarm
The T1000 generates traps only for SNMP alarms that are enabled. Some alarms are enabled
by default, but you can disable them. When you enable an SNMP alarm, the T1000
generates corresponding trap messages when some events occur. Some T1000 alarms are
enabled by default.
To enable or disable an SNMP alarm:
At the T1000 command prompt, use the following commands to set the parameters and
verify the configuration:
•
enable snmp alarm
trapName
•
disable snmp alarm
trapName
•
show snmp alarm
[
trapName
]
For example:
>
enable snmp alarm LOGIN-FAILURE
Done
>
show snmp alarm LOGIN-FAILURE
Alarm Alarm Threshold Normal Threshold Time State Severity Logging
----- --------------- ---------------- ---- -------- ------------- --------
1) LOGIN-FAILURE N/A N/A N/A ENABLED - ENABLED
Done
Configuring Alarms
The T1000 provides a set of condition entities called
SNMP alarms
. When the condition set
for an SNMP alarm is met, the T1000 generates SNMP traps messages that are sent to the
configured trap listeners. For example, when the LOGIN-FAILURE alarm is enabled, a trap
message is generated and sent to the trap listener whenever there is a login failure on the
T1000 appliance.
You can assign an SNMP alarm with a severity level. When you do this, the corresponding
trap messages are assigned that severity level.
The following are the severity levels, defined in the T1000, in decreasing order of severity.
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