Patent ID: 8937964
Filing Date: 2015-01-20
Classification: H04L

Abstract:
1. An apparatus to switch packets, each packet including at least one cell, the apparatus comprising: a plurality of input queues, each input queue storing cells to be switched; a plurality of output queues, each output queue storing switched cells; a switch fabric coupling said input queues to said output queues, said switch fabric having memory, said switch fabric storing cells moved from said input queues to said switch fabric, said switch fabric storing cells based on said output queues, said switch fabric storing flow control state information; and a controller coupled to said input queues and said switch fabric, said controller determining input priorities for cells moving from said input queues to said switch fabric and output priorities for cells moving from said switch fabric to said output queues, said controller configured to update said flow-control state information of said switch fabric based on whether or not a cell exists in said switch fabric memory with a lower TTL than all queued cells being regulated by said flow-control state information.