New Jersey Institute of Technology

Empire Technology Development LLC

Njit

Ziqian Dong

Roberto Rojas-Cessa

Chuan-bi Lin

Examples are disclosed for forwarding cells of partitioned data through a three-stage memory-memory-memory (MMM) input-queued Clos-network (IQC) packet switch. In some examples, each module of the three-stage MMM IQC packet switch includes a virtual queue and a manager that are configured in cooperation with one another to forward a cell from among cells of partitioned data through at least a portion of the switch. The cells of partitioned data may have been partitioned and stored at an input port for the switch and have a destination of an output port for the switch.

Forwarding cells of partitioned data through a three-stage Clos-network packet switch with memory at each stage

A Clos-network packet switching system may include input modules coupled to a virtual output queue, central modules coupled to the input modules, and output modules coupled to the central modules, each output module having a plurality of cross-point buffers for storing a packet and one or more output ports for outputting the packet.

Space-space-memory (SSM) Clos-network packet switch

Multicast traffic is expected to increase in packet networks, and therefore in switches and routers, by including broadcast and multimedia-on-demand services. Combined input-crosspoint buffered (CICB) switches can provide high performance under uniform multicast traffic. However this is often at the expense of Ncrosspoint buffers. An output-based shared-memory crosspoint-buffered (O-SMCB) packet switch is used where the crosspoint buffers are shared by two outputs and use no speedup. An embodiment of the proposed switch provides high performance under admissible uniform and non-uniform multicast traffic models while using 50% of the memory used in CICB switches that has dedicated buffers. Furthermore, the O-SMCB switch provides higher throughput than an existing SMCB switch where the buffers are shared by inputs.

Replicating and switching multicast internet packets in routers using crosspoint memory shared by output ports

Examples are disclosed for forwarding data partitioned into one or more cells through at least a portion of a three-stage memory-memory-memory (MMM) input-queued Clos-network (IQC) packet switch. In some examples, each module of the three-stage MMM IQC packet switch includes a virtual queue and a manager that are configured in cooperation with one another to forward cells through at least a portion of the switch. The cells may have been partitioned and stored at an input port for the switch and destined for an output port for the switch.

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Kearny, NJ, United States of America

Ziqian Dong