N-central Help

Interface Health service

The Interface Health service monitors the health of NIC interfaces using SNMP. This service collects inbound discards, inbound errors, outbound discards, outbound errors and outbound queue length from the generic RFC1213-MIB.

  1. Configure SNMP on the device. For more information, see the manufacturer's documentation.
  2. Login to SolarWinds N-central.
  3. Click ViewAll Devices and click the Name of a device.
  4. Click SettingsProperties and ensure Use SNMP is selected.
  5. Click Save if required.
  6. Click Monitoring > Status and click Add.
  7. Enter 1 for the number of instances of the Interface Health service that you would like to associate to the device.
  8. Click Apply.
  9. Click the Interface Health service and click the Service Details tab.
  10. For Monitored Interface, select the NICs/ports that you would like to monitor.
  11. Click OK.
  12. SolarWinds N-central creates a new instance of the Interface Health service for every NIC or port that it is monitoring.

Service Type SNMP
Instances on a Device 400
Supported Systems/Applications Any SNMP MIB-II Compliant Device (RFC1213-MIB or IF-MIB).
Device Class Server - Generic, Workstation - Generic, Other, Printer, Scanner/Camera, Switch/Router, and Server - Windows
Monitored By Windows probes
Scan Interval 5 minutes
Monitored Interface Select the the NICs or ports that you would like to monitor, identified by SNMP Index, Interface Name, or Interface Alias.

OID/Calculation

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

Metric Name OID/Calculation Description
Inbound Discards

1.3.6.1.2.1.2.2.1.13

Calculation: Sample2 - Sample1

 
Inbound Errors

1.3.6.1.2.1.2.2.1.14

Calculation: Sample2 - Sample1

 
Outbound Discards

1.3.6.1.2.1.2.2.1.19

Calculation: Sample2 - Sample1

 
Outbound Errors

1.3.6.1.2.1.2.2.1.20

Calculation: Sample2 - Sample1

 
Administrative Status 1.3.6.1.2.1.2.2.1.7  
Operational Status 1.3.6.1.2.1.2.2.1.8

Mapped as...

  • Normal: 1, 5
  • Warning: 2
  • Failed: 3, 4, 6, 7

... where ...

  • 1: Up
  • 2: Down
  • 3: Testing
  • 4: Unknown
  • 5: Dormant
  • 6: Not Present
  • 7: Lower Layer Down
Operational Status Description  

Describes the operational status:

  • Up
  • Down
  • Testing
  • Unknown
  • Dormant
  • Not Present
  • Lower Layer Down
Detected Port Speed 1.3.6.1.2.1.2.2.1.5 Indicates the interface's current bandwidth in bits per second.