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A temporary resource reservation mechanism can enhance the performance of a stateless PCE in situations when the TED might not be up-to-date. This paper examines the benefits of such a mechanism by means of simulation.
A lab trial validating the implemented GMPLS control plane for MPLS-TP in the ADRENALINE testbed is presented. We experimentally compare the establishment of bidirectional LSPs using either source or PCE-based path computations.
Overlay architectures are the information theoretical playgrounds of the Internet. They provide significant gains in throughput by shifting complexity into the network nodes. A consequence is the requirement for smart routers between adjacent network segments. Since meanwhile audiovisual media allocate the major part of the Internet traffic, protocols as well as overlay structures have to serve Predictable...
Multidomain traffic engineering (TE) has the potential not only of guaranteeing the quality of service (QoS) to connections spanning multiple domains but also of effectively utilizing intradomain resources. The hierarchical Optical Internetworking Forum (OIF) External Network-to-Network Interface (E-NNI) control plane platform has emerged as a promising candidate aiming at guaranteeing multidomain...
The choice of routing algorithm plays a vital role in the performance of on-chip interconnection networks. Adaptive routing is appealing because it offers better latency and throughput than oblivious routing, especially under non-uniform and bursty traffic. The performance of an adaptive routing algorithm is determined by its ability to accurately estimate congestion in the network. In this regard,...
In the tactical Internet, inter-domain links consist mostly of unreliable and low bandwidth wireless links. To enable seamless routing across different Autonomous Systems (ASes), we propose an inter-domain Traffic Engineering (TE) scheme to reroute traffic when congestion occurs. There are two components for the TE scheme. First, a Traffic Splitting (TS) scheme is used for load balancing among parallel...
The problem of providing quality of service (QoS) in the Internet stems from the original choice of a datagram packet switching service model for the Internet protocol (IP). Since, in principle, each packet can take any path to the destination, it is impossible to provide any absolute guarantees about service. This paper presents a scheme using traffic engineering techniques and implements policy...
IEEE P1900.4 is an emerging standard for optimized radio resource utilization where cognitive radio technologies are used for efficient spectrum utilization. In this paper, we design and implement a cognitive wireless network system based on open documents of IEEE P1900.4, and evaluate its performance using UDP streaming and HTTP download. Our experiments show interesting results that total network...
The next generation Internet will be highly diversified in both underlying networking technologies and supported networking applications. The diversified Internet architecture requires effective collaboration among heterogeneous network domains to support various application requirements. One of the challenges to achieve this objective lies in enabling network domain collaboration and network-application...
This paper describes a new path computation model in Multi-protocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks. It introduces a path computation element (PCE), which is functionally separate from label switching routers (LSRs). The Path Computation Element (PCE) is an entity that is capable of computing a network path or route based on a network graph, and applying computational...
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