Speaker 1: Xin Chen

Title : An Evolutionary based Dynamic Energy Management Framework for IP-over-DWDM Core Networks


The energy consumption of the Internet accounts for approximately 1% of the world’s total electricity, which may become the main constraint for its future growth of the Internet. In response, we propose a novel dynamic energy management framework that reduces the overall energy consumption without degrading network performance. The main concept is to combine infrastructure sleeping with virtual router migration. During off-peak hours, the virtual routers are moved onto fewer physical platforms and the unused physical platforms are placed in a sleep mode to save energy. The sleeping physical platforms are awakened again during busy periods. In our energy management framework, an important question that is considered is where to move the virtual routers to. To this end, we develop an evolutionary algorithm to solve the destination physical platform selection problem.

Speaker 2: Jiayuan Wang

Title : Energy Efficiency in Optical Translucent Networks


A Software Defined Networking (SDN) control plane based on an overlay GMPLS control Model is presented. The SDN control platform manages optical core networks (WDM/DWDM networks) and the associated access networks (GPON networks), which makes it possible to gather global in- formation and enable wider areas’ energy efficiency networking. The energy related information of the networks and the types of the traffic flows are collected and utilized for the end-to-end QoS provision. Dynamic network simulation results show that by applying different routing algorithms according to the type of traffic in the core networks, the energy efficiency of the network is improved without compromising the quality of service.

Date: 24th  April, 2013.

Time: 14.00-15.00 hrs

Venue:  QMUL Maths:1.03

2013 April 24- Xin Chen & Jiayuan Wang