Reported distance and feasible distance

Question

Describe the relationship among reported distance and feasible distance and how they find out successors and feasible successors.

Answer 1

The reported distance to a route which is sent to the other router is the feasible distance on reporting router. Feasible distance is the reported distance bonus the metric among the receiving and reporting routers. The route with the minimum feasible distance is the successor. Any routes with a reported distance which is less than the feasible distance are the feasible successors.