Getting routers out of the core: Building an optical wide area network with "multipaths"

Details Getting routers out of the core: Building an optical wide area network with "multipaths" Getting routers out of the core: Building an optical wide area network with "multipaths"

2011-10-06

arxiv.org/abs/1110.1245v1

Computer Science

Networking and Internet Architecture

Scientific paper

We propose an all-optical networking solution for a wide area network (WAN) based on the notion of multipoint-to-multipoint lightpaths that, for short, we call "multipaths". A multipath concentrates the traffic of a group of source nodes on a wavelength channel using an adapted MAC protocol and multicasts this traffic to a group of destination nodes that extract their own data from the confluent stream. The proposed network can be built using existing components and appears less complex and more efficient in terms of energy consumption than alternatives like OPS and OBS. The paper presents the multipath architecture and compares its energy consumption to that of a classical router-based ISP network. A flow-aware dynamic bandwidth allocation algorithm is proposed and shown to have excellent performance in terms of throughput and delay.

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