OID value: 1.3.6.1.2.1.4.21.1.13
OID description:
ipRouteInfo OBJECT-TYPE SYNTAX OBJECT IDENTIFIER ACCESS read-only STATUS mandatory DESCRIPTION "A reference to MIB definitions specific to the particular routing protocol which is responsible for this route, as determined by the value specified in the route's ipRouteProto value. If this information is not present, its value should be set to the OBJECT IDENTIFIER { 0 0 }, which is a syntatically valid object identifier, and any conformant implementation of ASN.1 and BER must be able to generate and recognize this value." ::= { ipRouteEntry 13 }
See also the OID Repository website reference for 1.3.6.1.2.1.4.21.1.13