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SNMP service

The SNMP service monitors the performance and health of the SNMP agent on a device. SNMP is a widely used network management protocol that is present in a majority of network infrastructures (routers, switches, firewalls, and so on) as well as in different types of computing platforms. 

Service Type SNMP
Instances on a Device 1
Device Class Server - Generic, Workstation - Generic, Other, Printer, Scanner/Camera, Switch/Router, and Workstation - Windows
Monitored By Windows probe
Scan Interval 15 minutes

The table SNMPV2-MIB describes the SNMP objects that are queried by the probe.

SNMPV2-MIB

Object Descriptors Numerical OID
snmpInBadVersions 1.3.6.1.2.1.11.3
snmpInBadCommunityNames 1.3.6.1.2.1.11.4
snmpInBadCommunityUses 1.3.6.1.2.1.11.5
snmpInASNParseErrs 1.3.6.1.2.1.11.6
snmpInTooBigs 1.3.6.1.2.1.11.8
snmpInNoSuchNames 1.3.6.1.2.1.11.9
snmpInBadValues 1.3.6.1.2.1.11.10
snmpInGenErrors 1.3.6.1.2.1.11.12
snmpOutTooBigs 1.3.6.1.2.1.11.20

OID/Calculation

SolarWinds N-central services use Reverse Polish Notation (RPN) for all calculation formulae.

Metric Name OID/Calculation Description
Number of SNMP messages with version error ^snmpInBadVersions The number of SNMP queries received by the SNMP agent on the target device that were for an unsupported version of SNMP.
Number of wrong community string messages ^snmpInBadCommunityNames The number of SNMP queries received by the SNMP agent on the device that used an incorrect SNMP community string.
Number of messages with an invalid user ^snmpInBadCommunityUses The number of SNMP messages received by the SNMP agent on the device which requested an SNMP operation which was not allowed by the SNMP community string in the message.
Number of SNMP messages unparsed ^snmpInASNParseErrs The number of SNMP messages received by the SNMP agent on the device with syntax errors.
Number of messages with invalid status bits ^snmpInTooBig+^snmpNoSuchName+^snmpBadValue+^snmpGenError+^snmpOutTooBig The number of SNMP messages received by or transmitted from the SNMP agent on the target device, which indicates an error status.