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Segment Routing (SR) can be used as a traffic engineering strategy to counteract increasing loads on networks like Internet Service Provider (ISP) backbones. Many SR approaches, however, optimize traffic flows that were measured in the past. This paper introduces a new tunnel training architecture. It aims to show that the results of these strategies can still be beneficial for routing new traffic...
Software defined networking (SDN) technology promises a new bright future to IP network. Significant number of SDN researches have been done so far to facilitate network operation and management efficiently. However, until now there are only few frameworks to support emulation, verification, and implementation of the SDN. Mininet is one of the most popular tools because of the openness, cost effectiveness,...
Current approaches to Information-Centric Networking (ICN) facilitate the publication and retrieval of content in a network through a variety of discovery, caching and forwarding approaches, thus defining an equivalent of the data plane in the current Internet infrastructure. However, in contrast to the current Internet, ICN lacks a definition of the control plane for the management of the operation...
A rapid growth in the internet network technologies claims for a better routing protocol in transmitting data. The network performance is evaluated to compare the two Link State (LS) routing protocols which are the Open Shortest Path First version3 (OSPFv3) and Intermediate System to Intermediate System (IS-IS). The evaluation is done in terms of the performance in the network convergence through...
Network-on-Chip (NoC) is a nascent approach for reducing the communication bottleneck of multicore System-on-Chip (SoC). As the number of cores are increasing on SoC due to high performance demand of the consumer electronics and processing systems like servers, the low power and low latency NoC is required. Topologies are one of the most important parts of a NoC design, with considering the performance...
For reenterable models of IP networks with dynamic routing according to RIP protocol, measuring subnets for QoS parameters evaluation have been essentially modified and extended. Online algorithms of statistical analysis have been specified by colored Petri nets. The mean and variance of the packet delivery time have been evaluated. As a result, the computation precision has grown and an essential...
Due to the variability of network topologies and services that can be deployed in the transport network, traffic engineering decisions within a software defined networking (SDN) controller need to be influenced by the current network topology, available resources, and end user experience. In this work a holistically approached traffic engineering quality of experience (QoE) feedback application is...
Distributed overlay-based publish/subscribe systems provide a selective, scalable, and decentralized approach to data dissemination. Due to the dynamic communication flows between data producers and consumers, the overlay topology of such systems can become inefficient over time and therefore requires adaptation to the existing load. Existing studies propose algorithms to design overlay topologies...
To speed up the recovery from network failures, an extensive list of methods have been proposed. Many failure-recovery methods are proposed based on tunneling or marking, which increase the packet processing burden on routers and consume extra bandwidth. With neither tunneling nor marking, existing methods guarantee recovery from any single-link failure if a detour for the failed link exists, but...
A low-latency and reliable message switching network is critical for constructing high-speed datacenter networks. In this paper, we present the design, implementation, and evaluation of a novel Location basEd Source Switching (LESS) for datacenter networks. LESS enables lightweight source switching through a location-based addressing scheme. Each switch and host can independently derive a source route...
Bit Indexed Explicit Replication (BIER) is a novel multicast forwarding scheme for IP networks that avoids states in replicating routers by encoding the multicast information into a bit string in the packet header. In addition, the BIER-TE variant encodes the multicast tree in the header and allows for network programmability. We propose the use of maximally redundant trees (MRTs) for 1+1 protection...
One of the main goals of the network was to obtain a perfect balance between the network optimization and the central intelligence. However the service providers desired a more simplified and optimized IP network, with an increased scalability. With this aim in mind the concept of Segment Routing was created.
IP Mobility has many unresolved issues including triangle routing, session survivability, long delay and packet loss during hand-off. SDN-based IP Mobility promises to mitigate them by taking the advantage of network-wide visibility and centralized control. However, SDN-based approach still has some problems namely 1) large signaling overhead of controller and 2) high hand-off latency as the number...
Live Virtual machine (VM) migration is a promising solution for data center (DC) administrators to achieve a wide range of objectives - from load balancing to disaster evacuation. Ideally, live VM migration is seamless and the challenge is to minimize the downtime during which the VM is not responding to requests or providing the service. The duration of the downtime is mainly influenced by the migration...
A network topology algorithm based on SNMP was put forward and implemented. This algorithm could confirm the connection between ports and improve the efficiency of discovery through combining the topology discovery of the network layer and the link layer. It could solve the problem of subnet information redundancy and incomplete information of address forwarding table during the discovery. The experimental...
Named Data Networking (NDN) is a newly proposed content-centric network architecture that naturally supports efficient content distribution by routing data names instead of conventional IP prefixes. Taking advantage of the unique feature-adaptive forwarding in NDN and the centralized management and control in Software Defined Networking (SDN), we design and develop SDAR, a Software Defined Intra-Domain...
Software-defined Networking (SDN) is a novel approach to manage enterprise and data center networks easily. Integration of middleboxes, which provides Network Functions (NF)s that are crucial for network security, performance and reliability, raises new challenges, for example, traversing middle-boxes in a given order makes routing more complex. Rerouted traffic flows require that the state of middleboxes...
Dynamic traffic recovery is designed and validated in a multi-layer network exploiting an SDN-based implementation of Segment Routing. Traffic recovery is locally performed from the node detecting the failure up to the destination node without involving the SDN controller. Experimental results demonstrate recovery time within 50 ms.
Since the past decade Network-on-Chip has evolved as the most dominant and efficient solution in on-chip communication paradigm for multi-core systems. With the growing number of on-chip processing cores modern three dimensional NoC design is facing several challenges originating from various network performance parameters like latency, hop count etc. Scalability and network efficiency have generated...
Routing in NDN networks must scale in terms of forwarding table size and routing protocol overhead. Hyperbolic routing (HR) presents a potential solution to address the routing scalability problem, because it does not use traditional forwarding tables or exchange routing updates upon changes in network topologies. Although HR has the drawbacks of producing sub-optimal routes or local minima for some...
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