| 摘要 |
<p>The invention concerns a method for a multi-port node (110) having a shared buffer memory (240) to provide enhanced data packet buffering capacity for established virtual circuits (VC's) through the node and one of its output ports (220) while maintaining grades of service commitments. The method admits incoming data packets to a node for an established VC based on a determination of combination of factors including the effective memory requirements for each output port as VC's are created or terminated, the portions of buffer memory in use for conveying packets through the intended output port for the incoming packet, and the total amount of available shared memory in the node. Such determinations enable the node to better decide whether admitting the incoming packet would cause a disproportionate allocation of the shared memory for the intended output port. As a consequence, a relatively high packet buffering capacity can be achieved substantially without violating grades of service commitments. <IMAGE></p> |
