Patent ID: 6137781
Filing Date: 2000-10-24
Classification: H04L

Abstract:
A communication network system including a plurality of networks interconnected via a plurality of relaying stations each performing a program controllable process to relay communication data, said program controllable process comprising:a routing table having route information for determining a route to transfer the communication data;learning processing means exchanging the route information contained in said routing table among the individual relaying stations in accordance with the route information of said routing table to acquire the route information by the exchange;route information transform processing means for transforming the route information contained in said routing table as acquired by the learning means into route information non-exchangeable among the individual relaying stations; andsaid route information transforming means comprising:port identifying means for identifying use-enabled interconnecting ports after communication-ready state has been established between said relaying stations;measurement processing means for measuring the number of changes in a number of times the route information has been exchanged with a counterpart relaying station per unit time period;transmission processing means for sending a frame indicating suspension of the exchange of the route information to the counterpart relaying station with which the route information is being exchanged when the number of changes in said number of times the route information has been exchanged becomes equal to a predetermined value; androute information rewrite processing means responsive to one of reception of said frame and reception of response for said frame, to thereby replace the learned route information contained in said routing table by route information non-exchangeable between the relaying stations.