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Abstract Modern core routers in the Internet consume much power due to inefficiencies. This paper presents a power-efficient router architecture named GreenRouter, which is based on the sharing of packet processing capacities. GreenRouter separates every line-card into a network interface card and a packet processing card. All cards in the router are connected by a two-stage switch fabric. The traffic from all the network interface cards shares all the packet processing cards and the traffic can be aggregated into a few active packet processing cards on demand while others are shut down to save power. The key issues of the GreenRouter's architecture are described. Real trace evaluations show that GreenRouter can save up to 40% of the power consumed while guaranteeing the quality of service (QoS) constraints.
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| Keywords
computer network
router
low power design
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Issue Date: 15 April 2014
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2014,
Vol. 54
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