OID value: 1.3.6.1.2.1.2.2.1
OID description:
ifEntry OBJECT-TYPE
              SYNTAX  IfEntry
              ACCESS  not-accessible
              STATUS  mandatory
              DESCRIPTION
                      "An interface entry containing objects at the
                      subnetwork layer and below for a particular
                      interface."
              INDEX   { ifIndex }
              ::= { ifTable 1 }
See also the OID Repository website reference for 1.3.6.1.2.1.2.2.1