OID value: 1.3.6.1.2.1.2.2.1.9
OID description:
ifLastChange OBJECT-TYPE SYNTAX TimeTicks ACCESS read-only STATUS mandatory DESCRIPTION "The value of sysUpTime at the time the interface entered its current operational state. If the current state was entered prior to the last re- initialization of the local network management subsystem, then this object contains a zero value." ::= { ifEntry 9 }
See also the OID Repository website reference for 1.3.6.1.2.1.2.2.1.9