In VT60x SNMP Trap PDU is linked to an event dynamically, through the action THEN logic. Therefore, to determine the severity until the creation of the SNMP Trap element and its binding to the logic circuit is impossible.
The body of the SNMP Trap PDU transmitted variables:
Trap ID
text string like:
| Code Block | ||
|---|---|---|
| ||
"Trap (name: <TrapName>, ID: <TrapID>) was worked. Time: <Time> Logic: <LogicName>, Sensor: <ElementName>, in state: <ElementState>, value: <ElementValue>" |
where
TrapName - SNMP Trap name;
TrapID - ID of SNMP Trap;
Time
-
logic
response
time;
LogicName - triggered logic name;
ElementName
-
element
name,
which
state
changing
has
led
to
triggered
logic;
ElementState
-
state
of
the
element
when
triggered
logic;
ElementValue
-
altered
state
element
valuu
when
triggered
logic;
Thus to determine the severity of Trap PDU can be, for example,:
...
2) by state of the field in the row Trap PDU (see above)
To add an SNMP Trap PDUevent handler proceed PDUevent handler proceed as follows:
1) Create event file SNMP Trap PDU in $ONMS/etc/events:
Vutlan.events.xml
| Code Block | ||||
|---|---|---|---|---|
| ||||
<events xmlns="http://xmlns.opennms.org/xsd/eventconf">
<event>
<mask>
<maskelement>
<mename>id</mename>
<mevalue>.1.3.6.1.4.1.39052.1</mevalue>
</maskelement>
<maskelement>
<mename>generic</mename>
<mevalue>6</mevalue>
</maskelement>
<maskelement>
<mename>specific</mename>
<mevalue>5</mevalue>
</maskelement>
<varbind>
<!-- for filtering by ID of SNMP Trap element
<vbnumber>1</vbnumber>
<vbvalue>1011</vbvalue>
-->
<!-- for filtering by state of triggered element-->
<vbnumber>2</vbnumber>
<vbvalue>~(.*)'warning'(.*)</vbvalue>
<vbvalue>~(.*)'not connected'(.*)</vbvalue>
<vbvalue>~(.*)'off'(.*)</vbvalue>
<vbvalue>~(.*)'on'(.*)</vbvalue>
</varbind>
</mask>
<uei>uei.opennms.org/vendor/vutlan/traps/ctlUnitTrapNotification</uei>
<event-label>VUTLAN-MIB defined trap event: ctlUnitTrapNotification</event-label>
<descr>
<![CDATA[
<p>Vutlan EMS device trap received: %parm[#2]% </p>
]]>
</descr>
<logmsg dest='logndisplay'>
<![CDATA[
<p>Trap ID: %parm[#1]% </p>
<p>Vutlan EMS device trap received: %parm[#2]% </p>
]]>
</logmsg>
<severity>Warning</severity>
</event>
<event>
<mask>
<maskelement>
<mename>id</mename>
<mevalue>.1.3.6.1.4.1.39052.1</mevalue>
</maskelement>
<maskelement>
<mename>generic</mename>
<mevalue>6</mevalue>
</maskelement>
<maskelement>
<mename>specific</mename>
<mevalue>5</mevalue>
</maskelement>
<varbind>
<vbnumber>2</vbnumber>
<vbvalue>~(.*)'alarm'(.*)</vbvalue>
</varbind>
</mask>
<uei>uei.opennms.org/vendor/VUTLAN/traps/ctlUnitTrapNotification</uei>
<event-label>VUTLAN-MIB defined trap event: ctlUnitTrapNotification</event-label>
<descr>
<![CDATA[
<p>Vutlan EMS device trap received: %parm[#2]% </p>
]]>
</descr>
<logmsg dest='logndisplay'>
<![CDATA[
<p>Trap ID: %parm[#1]% </p>
<p>Vutlan EMS device trap received: %parm[#2]% </p>
]]>
</logmsg>
<severity>Critical</severity>
</event>
<event>
<mask>
<maskelement>
<mename>id</mename>
<mevalue>.1.3.6.1.4.1.39052.1</mevalue>
</maskelement>
<maskelement>
<mename>generic</mename>
<mevalue>6</mevalue>
</maskelement>
<maskelement>
<mename>specific</mename>
<mevalue>5</mevalue>
</maskelement>
<varbind>
<vbnumber>2</vbnumber>
<vbvalue>~(.*)'normal'(.*)</vbvalue>
</varbind>
</mask>
<uei>uei.opennms.org/vendor/VUTLAN/traps/ctlUnitTrapNotification</uei>
<event-label>VUTLAN-MIB defined trap event: ctlUnitTrapNotification</event-label>
<descr>
<![CDATA[
<p>Vutlan EMS device trap received: %parm[#2]% </p>
]]>
</descr>
<logmsg dest='logndisplay'>
<![CDATA[
<p>Trap ID: %parm[#1]% </p>
<p>Vutlan EMS device trap received: %parm[#2]% </p>
]]>
</logmsg>
<severity>Normal</severity>
</event>
</events> |
2) attach this file to the OpenNMS events configurationOpenNMS events configuration:
eventconf.xml
| Code Block | |||
|---|---|---|---|
| |||
. | xml..
<event-file>events/Vutlan.events.xml</event-file>
.. |
...
Vytlan.events.xml file contains three nodes event node events with different settings of the filter mask, which is applied to the variables SNMP Trap PDU. Each section has its own severity.
Filter by Trap ID can be implemented as follows::
eventconf.xml
| Code Block | ||||
|---|---|---|---|---|
| ||||
<vbnumber>1</vbnumber> <vbvalue>1011</vbvalue> |
...
Also, you can filter the regular expression to a string parameter
eventconf.xml
| Code Block | ||||
|---|---|---|---|---|
| ||||
<vbnumber>2</vbnumber> <vbvalue>~(.*)'warning'(.*)</vbvalue> |
...
By the regular expression can be implemented filters by a predefined name elements, logic, etc.