Network Management
How Interface Errors and Discards are counted
When it comes to discards, the SolarWinds Platform polls a set of OIDs and saves results in the database and then displays them via Web.
First published date
9/17/2019 11:30 PM
Last published date
7/31/2025 8:54 PM
Overview
If a device's MIBs are not correctly returning valid values to us, then this is a vendor issue and we recommend reaching out to them.
To verify SolarWinds is showing correct information, check from Interfaces Table & InterfaceErrorsView in the Database Manager on the SolarWinds server.
You can check which Machine type is having issues and check OIDs in MIB walks to using SNMP Walk located at C:\Program Files\Solarwinds\Orion\SnmpWalk.exe by default.
To verify SolarWinds is showing correct information, check from Interfaces Table & InterfaceErrorsView in the Database Manager on the SolarWinds server.
You can check which Machine type is having issues and check OIDs in MIB walks to using SNMP Walk located at C:\Program Files\Solarwinds\Orion\SnmpWalk.exe by default.
Product section
Network Performance Monitor
Resolution
The SolarWinds Platform uses these OIDs:
| Object | Name Object Identifier (OID) | Description |
| ifInDiscards | 1.3.6.1.2.1.2.2.1.13 | The number of inbound packets that were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. |
| ifInErrors | 1.3.6.1.2.1.2.2.1.14 | The number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. |
| ifOutDiscards | 1.3.6.1.2.1.2.2.1.19 | The number of outbound packets that were chosen to be discarded even though no errors had been detected to prevent their being transmitted. |
| ifOutErrors | 1.3.6.1.2.1.2.2.1.20 | The number of outbound packets that could not be transmitted because of errors. |
Calculations:
- Take value polled on first poll
- Then on Next Poll, compare the two, so you can see the difference
- e.g. If the first Poll was 140 and 2nd 160, discards would be 20
- Out_Discards = ifOutDiscards – prevOutDiscards
- OutDiscardsToday and OutDiscardsHour in interfaces table will be updated per every polling interval
- Repeat above for OutErrors, InDiscards, InErrors if needed
- OutErrorsThisHour/OutErrorsToday, InDiscardsThisHour/InDiscardsToday, InErrorsThisHour/InErrorsToday, InDiscardsThisHour/InDiscardsToday will be reset accordingly
- e.g
- OutErrorsThisHour before 5pm shows 194563
- It was being reset after 5pm, and then the figure showing the sum of Out_Errors after 5pm poll
-- Scripts are not supported under any SolarWinds support program or service.
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-- out of the use or performance of the scripts and documentation stays with you.
-- In no event shall SolarWinds or anyone else involved in the creation,
-- production, or delivery of the scripts be liable for any damages whatsoever
-- (including, without limitation, damages for loss of business profits, business
-- interruption, loss of business information, or other pecuniary loss) arising
-- out of the use of or inability to use the scripts or documentation.
-- Scripts are provided AS IS without warranty of any kind. SolarWinds further
-- disclaims all warranties including, without limitation, any implied warranties
-- of merchantability or of fitness for a particular purpose. The risk arising
-- out of the use or performance of the scripts and documentation stays with you.
-- In no event shall SolarWinds or anyone else involved in the creation,
-- production, or delivery of the scripts be liable for any damages whatsoever
-- (including, without limitation, damages for loss of business profits, business
-- interruption, loss of business information, or other pecuniary loss) arising
-- out of the use of or inability to use the scripts or documentation.