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Buffered crossbar (CICQ) switches have shown a high potential in scaling Internet routers capacity. However, they require expensive on-chip buffers whose cost grows quadratically with the port count. Additionally, similar to traditional crossbars, point-to-point switching mandates the use of long wires to connect inputs to outputs, resulting in non-negligible delays. In this paper,we propose a CICQ...
The crossbar fabric is widely used as the interconnect of high-performance packet switches due to its low cost and scalability. There are two main variants of the crossbar fabric: unbuffered and internally buffered. On one hand, unbuffered crossbar fabric switches exhibit the advantage of using no internal buffers. However, they require a centralized and complex scheduler. Internally buffered crossbar...
The load-balanced Birkhoff-von Neumann switching architecture consists of two stages: a load balancer and a deterministic input-queued crossbar switch. The advantages of this architecture are its simplicity and scalability, while its main drawback is the possible out-of-sequence reception of packets belonging to the same flow. Several solutions have been proposed to overcome this problem; among the...
In this study, we purpose an efficient buffered crossbar switching architecture with multiple multicast virtual output queues called kMVOQ-CPX switch. The kMVOQ-CPX switch consists of N virtual output queues (VOQs), k multicast VOQs , an (N+k) x N buffered crossbar fabric, N+k Input scheduler and N output scheduler. It has the features of simple architecture and great capability to support multicast...
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