OID value: 1.3.6.1.2.1.4.21.1.7
OID description:
ipRouteNextHop OBJECT-TYPE SYNTAX IpAddress ACCESS read-write STATUS mandatory DESCRIPTION "The IP address of the next hop of this route. (In the case of a route bound to an interface which is realized via a broadcast media, the value of this field is the agent's IP address on that interface.)" ::= { ipRouteEntry 7 }
See also the OID Repository website reference for 1.3.6.1.2.1.4.21.1.7