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Monitoring system elements overview

Monitoring system elements overview

Owned by Vladimir Tayzhev
Last updated: Oct 27, 2023
2 min read

The monitoring system may include the following elements:

  • Analog sensors;

  • Discrete sensors;

  • Virtual sensors (elements);

  • Notifications;

  • Units;

All the available elements of the system are given in table ctlAllElementsTable

Example. View available system elements:

$ snmptable -Ci -Cb -v2c -cread 192.168.0.193 VUTLAN-SYSTEM-MIB::ctlAllElementsTable
SNMP table: VUTLAN-SYSTEM-MIB::ctlUnitElementsTable Id Module Num Class Type Name State Value Spec 201001 1 -1 "analog" "temperature" "Temperature" "alarm" "31.5" "" 203001 1 -2 "analog" "voltage" "Voltage" "warning" "11.3" "" 301001 2 -1 "switch" "relay" "Analog Power" "on" "on" "" 102001 3 1 "switch" "outlet" "Relay-1" "off" "off" "" 102002 3 2 "switch" "outlet" "Relay-2" "off" "off" "" 102003 3 3 "switch" "outlet" "Relay-3" "off" "off" "" 102004 3 4 "switch" "outlet" "Relay-4" "off" "off" "" 101001 4 1 "discrete" "dry" "Dry-1" "normal" "on" "reverse=\"1\"" 101002 4 2 "discrete" "dry" "Dry-2" "normal" "on" "" 101003 4 3 "discrete" "dry" "Dry-3" "normal" "on" "" 101004 4 4 "discrete" "dry" "Dry-4" "normal" "on" "" 401001 5 1 "devhwr" "reader" "iButton" "not connected" "" "" 301001 5 -1 "switch" "relay" "iButton Power" "on" "on" "" 102001 2 1 "discrete" "door" "Analog-1" "normal" "on" "" 204001 2 2 "analog" "fvoltage" "Analog-2" "low" "0.0" "" 402001 11 1 "devhwr" "usb-cam" "USB Web camera" "unknown" "-" "" 201002 2 3 "analog" "temperature" "Analog-3" "alarm" "28.5" ""

 

Example. Getting the measured value for the system element with ID=201002:

$ snmpget -v2c -cread 192.168.0.193 VUTLAN-SYSTEM-MIB::ctlUnitElementValue.201002 or without MIB-file $ snmpget -v2c -cread 192.168.0.193 .1.3.6.1.4.1.39052.1.3.1.7.201002

there 7 - number of table row associated with sensor value, 201002 - sensor ID.

VUTLAN-SYSTEM-MIB::ctlUnitElementValue.201002 = STRING: "28.7"

 

Example. Changing the name of the element with ID=102003:

$ snmpset -v2c -cwrite 192.168.0.193 VUTLAN-SYSTEM-MIB::ctlUnitElementName.102003 s "Dry sensor"

 

VUTLAN-SYSTEM-MIB::ctlUnitElementName.102003 = STRING: "Dry sensor"

 

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