Patent ID: 7355969
Filing Date: 2008-04-08
Classification: H04L,Y02D

Abstract:
1. A physical port controller for a port having an input port service rate and a maximum rate on a multi-port card having ports that run at different line rates, comprising: a. an up-down counter being incremented as content is received via a corresponding input port and decremented at the input port service rate when no frame is received; b. a maximum burst size register holding a value corresponding to the maximum rate, the maximum rate being a maximum amount of content the input port is allowed to receive as content is being received by the input port at a rate above the input port service rate; and c. a first comparator providing in real time an acceptance rate limiting control signal only when the value of the up-down counter is greater than the value of the maximum burst size register, the acceptance rate limiting control signal providing link-layer input port-based hardware implemented acceptance rate limiting control.