The energy consumption in telecommunication networks is expected to grow considerably, especially in core networks. In this chapter, optimization of energy consumption is approached from two directions. In a first study, multilayer traffic engineering is used to assign energy-efficient paths and logical topology to IP traffic. The relation with traditional capacity optimization is explained, an...

As the Internet grows, traffic engineering has become a widely-used technique to control the flow of packets. For the inter-domain routing, traffic engineering relies on configurations of the Border Gateway Protocol (BGP). While it is recognized that the misconfiguration of BGP can cause negative effects on the Internet, we consider attack methods that disable traffic engineering regardless of ...

Traffic Engineering in IP networks with MPLS In the past, routing protocols for IP networks (e.g. BGP, IS-IS, OSPF) used the shortest path to forward the traffic on network links, each of which is assigned by a routing weight. This may lead to an unbalanced distribution of the traffic in the network with high utilization of some links while others remain underutilized. Network planing and an ad...

Although Software-Defined Networking (SDN) enables flexible network resource allocations for traffic engineering, current literature mostly focuses on unicast communications. Compared to traffic engineering for multiple unicast flows, multicast traffic engineering for multiple trees is very challenging not only because minimizing the bandwidth consumption of a single multicast tree by solving t...

In this paper, we present multicast traffic engineering and we compare it to unicast traffic engineering. We study the advantages given by the integration of multicasting and MPLS. We present current proposals for multicast traffic engineering and using MPLS network. We describe our approach, the MPLS multicast tree (MMT) protocol. In order to reduce forwarding states and enhance scalability, M...

Due to the dramatically increasing popularity of the services provided over the public Internet, problems with current mechanisms for control and management of the Internet are becoming apparent. In particular, it is increasingly clear that the Internet and other networks built on the Internet protocol suite do not provide sufficient support for the efficient control and management of traffic, ...