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Finding the SNMP Tabular OID using MIB browser

Object identifiers could be:

  • Scalar: Objects defined by a single object instance; there can only be one result. They are usually a Read-only or Read-write node present inside a folder or sub-folder.
  • Tabular: Objects defined by multiple related object instances that are grouped in MIB tables, i.e., a column in a table view. They are usually a Read-only or Read-write node present inside a table.

To monitor tabular performance counters, you have to use an MIB browser and find the SNMP Tabular OIDs. Follow the steps below to learn how to fetch a tabular OID: 

  1. Open an MIB browser, configure SNMP, and fill the required fields as in this document.
  2. Click File > Load MIB
  3. In the Load a MIB File dialog box that opens, select the MIB file that contains the required tabular SNMP OID and click Open.
  4. The selected MIB file will be displayed in the left pane. Click on the folder and navigate to the required table OID.
    Example: IF-MIB > internet > mgmt > mib-2 > interfaces > ifMIB > ifMIBObjects > ifXTable
  5. From the table, select the required column to be monitored.
    Example: ifXEntry > ifHighSpeed
  6. Click Get SNMP variable icon (the 7th icon below the menu bar) or go to Operations > Get.
  7. The attribute values of each row in the selected SNMP OID are displayed as a result.
  8. Copy the Object ID displayed below and add as a tabular performance counter.

Related links: 

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