SNMP Trap: Memory Usage
-----------------------

A trap is generated for high memory usage.

Identification

* The originating IP / hostname is used to identify the system generating the traps
* The NMS is responsible for associating traps with each managed system, along with clearing of alarms and escalation to the relevant system operator
* The trap OID is generic  for various SNMP events monitored by the system
* The SNMP system name is included as part of the variable binding to assist identification: 

::

  .iso.org.dod.internet.mgmt.mib-2.system.sysName.0 = standalone

Trap OID

.iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotifications.mteTriggerFired

Variable Bindings - High memory usage. 

* .iso.org.dod.internet.mgmt.mib-2.system.sysUpTime.0 = 2 minutes (12065)
* snmpTrapOID = mteTriggerFired
* .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotTrigger.0 = 'ERROR: High memory usage'
* .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotValue.0 = 1
* .iso.org.dod.internet.mgmt.mib-2.system.sysName.0 = standalone



Variable Bindings - Extremely high CPU usage. 

* .iso.org.dod.internet.mgmt.mib-2.system.sysUpTime.0 = 2 minutes (12065)
* snmpTrapOID = mteTriggerFired
* .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotTrigger.0 = 'ERROR: Extremely high CPU usage'
* .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotValue.0 = 1
* .iso.org.dod.internet.mgmt.mib-2.system.sysName.0 = standalone


Severity:

* Critical: ERROR: Memory swap error
* Info: INFO: Memory usage returned to normal  



Example: Critical
.................

::

   Mar 28 22:32:24 robot-sl snmptrapd[1214]:
   2019-03-28 22:32:24 <UNKNOWN> 
   [UDP: [192.168.100.3]:25747->[192.168.100.25]:162]:
   #012iso.3.6.1.2.1.1.3.0 = Timeticks: (997093) 2:46:10.93
   #011iso.3.6.1.6.3.1.1.4.1.0 = OID: iso.3.6.1.2.1.88.2.0.1
   #011iso.3.6.1.2.1.88.2.1.1.0 = STRING: "INFO: Memory usage returned to normal"
   #011iso.3.6.1.2.1.88.2.1.3.0 = STRING: "Memory more than 1024MB"
   #011iso.3.6.1.2.1.88.2.1.5.0 = INTEGER: 0
   #011iso.3.6.1.2.1.1.5.0 = STRING: "VOSS"


Example: Info
.............

::

   Mar 28 22:32:24 robot-sl snmptrapd[1214]:
   2019-03-28 22:32:24 <UNKNOWN> 
   [UDP: [192.168.100.3]:25747->[192.168.100.25]:162]:
   #012iso.3.6.1.2.1.1.3.0 = Timeticks: (997093) 2:46:10.93
   #011iso.3.6.1.6.3.1.1.4.1.0 = OID: iso.3.6.1.2.1.88.2.0.1
   #011iso.3.6.1.2.1.88.2.1.1.0 = STRING: "INFO: Memory usage returned to normal"
   #011iso.3.6.1.2.1.88.2.1.3.0 = STRING: "Memory more than 1024MB"
   #011iso.3.6.1.2.1.88.2.1.5.0 = INTEGER: 0
   #011iso.3.6.1.2.1.1.5.0 = STRING: "VOSS"