CONTROL PATH BAND WARRANT SYSTEM IN HIGH SPEED ROUTER

摘要

PROBLEM TO BE SOLVED: To attain high speed transfer by reserving a path for a control flow so as to maintain a cut-through path even in the case of excess traffic. SOLUTION: An output side of an asynchronous transfer mode ATM switch section 20 of a high speed router discriminates packets being output objects in the unit of virtual channel VC, a control packet is stored in a priority buffer 21a so as to give priority to a control path through which the control packet passes according to the discrimination result and outputted with priority thereby reserving a communication band of the control path. Thus, even on the occurrence of excess traffic, lack of communication of the control packet is avoided so as to maintain a cut-through path and to attain high speed transfer.