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SNMP Trap: Excessive Load

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
    
  • The following variable binding can be used to determine that the load average threshold has been exceeded.

    .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotTrigger.0 = ERROR: Excessive load.
    
  • The following variable binding can be used to further diagnose which time interval threshold has been exceeded

    .iso.org.dod.internet.private.enterprises.ucdavis.laTable.laEntry.laNames.<LoadIdx> = <LoadError>
    .iso.org.dod.internet.private.enterprises.ucdavis.laTable.laEntry.laErrMessage.<LoadIdx> = <LoadMessage>
    

Load average interval

<LoadIdx>

<LoadError>

<LoadMessage>

1 minute

1

Load-1

1 min Load Average too high (= 2.52)

5 minute

2

Load-5

5 min Load Average too high (= 1.27)

15 minute

3

Load-15

15 min Load Average too high (= 1.27)

Trap OID

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

Variable Bindings

  • .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: Excessive load.

  • .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotTargetName.0 =

  • .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotContextName.0 =

  • .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotOID.0 = laErrorFlag.1

  • .iso.org.dod.internet.mgmt.mib-2.dismanEventMIB.dismanEventMIBNotificationPrefix. dismanEventMIBNotificationObjects.mteHotValue.0 = 1

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

  • .iso.org.dod.internet.private.enterprises.ucdavis.laTable.laEntry.laNames.1 = Load-1

  • .iso.org.dod.internet.private.enterprises.ucdavis.laTable.laEntry.laErrMessage.1 = 1 min Load Average too high (= 1.36)

Severity:

  • Critical:

    • ERROR: Excessive load

Example: Critical

Mar 19 08:08:34 robot-sl snmptrapd[1234]:
2019-03-19 08:08:34 <UNKNOWN>
[UDP: [192.168.100.3]:20997->[192.168.100.25]:162]:
#012iso.3.6.1.2.1.1.3.0 = Timeticks: (6797884) 18:52:58.84
#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: "ERROR: Excessive load"
#011iso.3.6.1.2.1.88.2.1.2.0 = ""
#011iso.3.6.1.2.1.88.2.1.3.0 = ""
#011iso.3.6.1.2.1.88.2.1.4.0 = OID: iso.3.6.1.4.1.2021.10.1.100.1
#011iso.3.6.1.2.1.88.2.1.5.0 = INTEGER: 1
#011iso.3.6.1.2.1.1.5.0 = STRING: "VOSS"
#011iso.3.6.1.4.1.2021.10.1.2.1 = STRING: "Load-1"
#011iso.3.6.1.4.1.2021.10.1.101.1 = STRING: "1 min Load Average too high (= 3.45)"

Mar 19 08:10:34 robot-sl snmptrapd[1234]:
2019-03-19 08:10:34 <UNKNOWN>
[UDP: [192.168.100.3]:49080->[192.168.100.25]:162]:
#012iso.3.6.1.2.1.1.3.0 = Timeticks: (6809885) 18:54:58.85
#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: "ERROR: Excessive load"
#011iso.3.6.1.2.1.88.2.1.2.0 = ""
#011iso.3.6.1.2.1.88.2.1.3.0 = ""
#011iso.3.6.1.2.1.88.2.1.4.0 = OID: iso.3.6.1.4.1.2021.10.1.100.2
#011iso.3.6.1.2.1.88.2.1.5.0 = INTEGER: 1
#011iso.3.6.1.2.1.1.5.0 = STRING: "VOSS"
#011iso.3.6.1.4.1.2021.10.1.2.2 = STRING: "Load-5"
#011iso.3.6.1.4.1.2021.10.1.101.2 = STRING: "5 min Load Average too high (= 2.24)"

Mar 19 08:11:34 robot-sl snmptrapd[1234]:
2019-03-19 08:11:34 <UNKNOWN>
[UDP: [192.168.100.3]:47676->[192.168.100.25]:162]:
#012iso.3.6.1.2.1.1.3.0 = Timeticks: (6815886) 18:55:58.86
#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: "ERROR: Excessive load"
#011iso.3.6.1.2.1.88.2.1.2.0 = ""
#011iso.3.6.1.2.1.88.2.1.3.0 = ""
#011iso.3.6.1.2.1.88.2.1.4.0 = OID: iso.3.6.1.4.1.2021.10.1.100.3
#011iso.3.6.1.2.1.88.2.1.5.0 = INTEGER: 1
#011iso.3.6.1.2.1.1.5.0 = STRING: "VOSS"
#011iso.3.6.1.4.1.2021.10.1.2.3 = STRING: "Load-15"
#011iso.3.6.1.4.1.2021.10.1.101.3 = STRING: "15 min Load Average too high (= 1.16)"