Achieving 100% throughput in an input-queued switch

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Achieving 100% Throughput in an Input-Queued Switch

Abstract — It is well known that head-of-line (HOL) blocking limits the throughput of an input-queued switch with FIFO queues. Under certain conditions, the throughput can be shown to be limited to approximately 58%. It is also known that if non-FIFO queueing policies are used, the throughput can be increased. However, it has not been previously shown that if a suitable queueing policy and sche...

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Input buffered switches are known to suffer from head-of-line (HOL) blocking that limits the throughput to approximately 58.6%. It has been shown that 100% throughput can be achieved with virtual output queueing (VOQ) and an arbitration algorithm that controls the access to the switch fabric in each time slot. No weight-dependent algorithm was known that supports priorities, which are necessary...

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ژورنال

عنوان ژورنال: IEEE Transactions on Communications

سال: 1999

ISSN: 0090-6778

DOI: 10.1109/26.780463