Patent ID: 6570846
Filing Date: 2003-05-27
Classification: H04L

Abstract:
A method for monitoring and controlling traffic in real time at an asynchronous transfer mode (ATM) switching node, comprising steps of method for monitoring and controlling cells by:retrieving a virtual path identifier (VPI)/virtual channel identifier (VCI) field and a cell loss priority (CLP) field from a header of a received cell to determine the validity of said cell by checking an effective value of said header for the VPI/VCI field; comparing a cell monitoring counter value with a cell control counter value to detect violation of a traffic parameter when said cell is determined to be valid; determining whether a present user's connection violates a negotiated parameter by means of a traffic control data Active_Idle bit and the cell loss priority field when said cell violates said traffic parameter; holding, tagging and discarding said cell according to whether said cell violates said negotiated parameter; transferring a result of controlling a valid cell to a physical layer to process said valid cell; and reporting said cell monitoring counter value to a control panel of upper hierarchy to change said cell counter control value based on said cell monitoring counter value.