OID value: 1.3.6.1.2.1.4.20.1.2
OID description:
ipAdEntIfIndex OBJECT-TYPE
SYNTAX INTEGER
ACCESS read-only
STATUS mandatory
DESCRIPTION
"The index value which uniquely identifies the
interface to which this entry is applicable. The
interface identified by a particular value of this
index is the same interface as identified by the
same value of ifIndex."
::= { ipAddrEntry 2 }
See also the OID Repository website reference for 1.3.6.1.2.1.4.20.1.2