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We propose a remapping algorithm to tolerate the failures of Processing Elements (PEs) on Multiprocessor System-on-Chip. A new graph modeling is proposed to precisely define the increase of communication cost among PEs after remapping. Our method can be used not only to repair faults but also to improve the communication cost of given initial mapping results. Experimental results show that under multiple...
With the growth of data center (DC) size, the network topology becomes complicated and the maintenance workload increases significantly. To evaluate the workload, this paper presents a metric named MNT, Maintainability of Networking Topology. MNT consists of numbers of definitions of DC network model, such as cost of maintaining a node, cost of maintaining a link and recursive level. They can quantify...
Sensor networks typically consist of a very large number of nodes with no centralized supervision. As a result, sensor networks are highly prone to an enormous number of logical and physical attacks. These attacks vary from eavesdropping on sensitive information, imputing inaccurate information, to the unintentional failure of nodes as in Denial of Service (DoS) attacks. Many approaches have been...
Survivable MPLS technologies are crucial in ensuring reliable communication services. The fast reroute (FRR) mechanism has been standardized to achieve fast local repair of label switched paths (LSPs). We present a hybrid survivability scheme for MPLS networks that combines the well-known p-cycle method with FRR technology. While with pure FRR backup paths are planned individually for each link, the...
The maintenance of communication systems is a critical operation which monopolizes human and network resources. The management of multiple, parallel maintenance jobs is a complex task that can generate faults and undesirable service interruption. In the context of IP/MPLS networks, Graceful Restart mechanisms allow, under strict conditions, the maintenance of a single router without impacting its...
In this paper, a performance evaluation of the Routing Protocol for Low power and Lossy Networks (RPL) in a typical outdoor Smart Grid Substation Network is presented. Detailed simulations are carried out to produce several routing performance metrics using real-life scenarios. The real outdoor network was reproduced in simulation with the help of topology and link quality data gathered from the network...
In this paper, a performance evaluation of the Routing Protocol for Low power and Lossy Networks (RPL) is presented. Detailed simulations are carried out to produce several routing performance metrics using a set of real-life scenarios. A real outdoor network was reproduced in simulation with the help of topology and link quality data. Behaviors of such a network in presence of RPL, their reason and...
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