| 摘要 |
PURPOSE:To obtain the routing control system of maximum safety constituted so as to deal with a user who desires to have precious data transferred safely while cost is allowed to be expensive. CONSTITUTION:In the case of transferring the data from an end node 5a to the end node 5b, the degree of safety of every network is defined beforehand. The informing means 12 of a node 3d gives the node 3a the information of the presence of a non-safe network 2e among each network constituting a communication network 1. Thus, the selecting means 13 of the node 3a can select other route not passing through the network 2e. |
