• phosnet1
  • phosnet2
  • phosnet3

Overview, targeted breakthrough and objectives/goals of the project

The rapid developments in optical Transceiver technology achieving linerates 100 Gb/s and beyond along with the widespread use of bandwidth-hungry internet-applications have been driving the immense growth of Internet traffic, constantly pushing for more efficient routing technologies. The wide deployment of Internet has been followed by concomitant proliferation of smart mobile phones, wireless devices, business and cloud-network devices always connected online.

Moreover, Internet has relied strongly on multi-homing techniques with single sites being inter-connected to more than one networks for enhanced network resiliency, as e.g. happens in the case of the pan-European GEANT and greek GRNET research networks shown in Figures below, and Virtual Private Network (VPN) or Virtual Routing/Forwarding (VRF) for enhanced security, especially in business-critical applications, necessitating additional physical or logical links.

This growing demand for internet access and inter-connectivity has ignited a tremendous surge in the number of addressable end-points, expanding the Default Free Zone and Routing Information Base (RIB) of Internet core routers, raising serious concerns for the efficacy of Address Look-up (AL) operations. This has inspired intense research efforts on fast AL schemes, mainly relying on specialized expensive electronic hardware that yet progress slowly according to Moore’s Law. As this is imposing long latencies in switching and routing operations, degrading router efficacies, it implies that scaling the AL and routing system remain one of the critical challenges of Internet design. As we shift towards the forthcoming era of the Internet of Things, forecasted to reach 50 billion users by 2020, a large leap in fast AL will be urgently required, taking into account the following major challenges:

i) RIB-entries have been exponentially increasing since 1994

ii) AL needs to meet the stringent requirements of Classless Inter-Domain Routing (CIDR)

iii) Dynamic operation due to Software Defined Networks (SDN) and OpenFlow


Contact Us

  • Photonic Systems and Networks Research Group
  • Balkan Center, Building A
  • 10th klm Thessalonikis - Thermis
  • 57001 - Greece
  • +30 2310 990588
  • +30 2310 990589

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