Each OID table has three columns of information. From left to right, the columns are:
Description of Task or Activity – The text under this heading describes what you want to do or information you want to see.
Action – The verbs under this heading describe the action respective to the SNMP client software interface. For example, a verb of read means to use the snmpget, snmpwalk, or snmptable command in the NetSNMP CLI client.
MIB OID – The string under this heading is the object identifier of the respective MIB that is used to accomplish the task or activity.
A table OID has a Table suffix, and the OIDs listed beneath it are most likely columns of that table.
An index OID has an Index suffix, and while the OID is not directly accessible, the OID is still used to return a specific row of a table OID.