route
it is dynamic routing.
EIGRP
Describe the role of the routing table on a host and on a router.
In a routing table, a directly connected network is typically indicated by the code "C." This designation signifies that the route is to a network that is directly attached to the router's interfaces. This allows the router to recognize and forward packets to these networks without needing additional routing protocols.
route-n
route
After checking with its Routing Table (table creation depends on Routing Protocol).
1. Do it yourself. 2. Don't do it yourself. 3. Don't have a routing table.
That depends entirely on what Operating System the router is running
route print
debug ip routing show ip route
it will append the update information to the routing table