{"id":164448,"date":"2014-03-12T00:00:00","date_gmt":"2014-03-12T00:00:00","guid":{"rendered":"https:\/\/newed.any0.dpdns.org\/en-us\/research\/msr-research-item\/an3-a-low-cost-circuit-switched-datacenter-network\/"},"modified":"2018-10-16T20:31:56","modified_gmt":"2018-10-17T03:31:56","slug":"an3-a-low-cost-circuit-switched-datacenter-network","status":"publish","type":"msr-research-item","link":"https:\/\/newed.any0.dpdns.org\/en-us\/research\/publication\/an3-a-low-cost-circuit-switched-datacenter-network\/","title":{"rendered":"AN3: A Low-Cost, Circuit-Switched Datacenter Network"},"content":{"rendered":"<div class=\"asset-content\">\n<p>In this paper, we present AN3\u2014a low-cost, circuit-switched datacenter network. AN3 replaces expensive IP switches with custom hardware that supports circuit-based switching efficiently and with low cost. AN3 is enabled by a new speculative transmission protocol that (1) enables rapid multiplexing of links to efficiently support many flows in a datacenter-scale computer, and (2) establishes setup and teardown of circuits within tens of microseconds\u2014well below the TCP handshake delay. In simulations, AN3 achieves over 90% link utilization in synthetic and real-world applications. A significant portion of AN3 has been built using low-cost, commodity FPGAs\u2014our cost analysis shows that AN3 reduces the amortized per-server cost of the network by 1.7-2.4X relative to a conventional datacenter network.<\/p>\n<\/div>\n<p><!-- .asset-content --><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this paper, we present AN3\u2014a low-cost, circuit-switched datacenter network. AN3 replaces expensive IP switches with custom hardware that supports circuit-based switching efficiently and with low cost. AN3 is enabled by a new speculative transmission protocol that (1) enables rapid multiplexing of links to efficiently support many flows in a datacenter-scale computer, and (2) establishes 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