Method, Equipment and System of Node Sorting and Selection

This invention provides a method, equipment and system of node sorting and selection. Sorting method includes: receiving node selects the request of node sorting sent by the equipment, the mentioned node sorting request includes source address, at least two destination node address and direction parameter; identifying path cost value of the mentioned source address and at least two destination node address in the direction indicated by the mentioned direction parameter; sorting the mentioned at least two destination node address according to the path cost value, then the sorting result is generated, which includes the optimal destination node address; returning to the sorting result by node selecting equipment, in order that user terminal sends service request to the optimal destination node address. This invention can flexibly sort destination node address according to routing information in various directions, so that the selected optimal node can meet the application requirements.