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A novel Denial-of-Service attack for Networks-on-Chip, namely illegal packet request attack (IPRA), has been proposed and measures to mitigate the same have been addressed. Hardware Trojans, which cause these attacks, are conditionally triggered inside the routers at the buffer sites associated with local core, when the core is idle. These attacks contribute to the degradation of network performance...
Many-core architectures provide massive parallelism and high performance to the users. They also introduce key challenges regarding security. The main threat rises from the resource sharing. Adoption of firewalls, encryption mechanisms and resource isolation (processor or memory) are common strategies to treat the security threats. The two first strategies present high hardware cost, while the resource...
We present a showcase of our SDN-inspired facility for the Internet of Things (IoT) — the CORAL (Cross-Layer Control of Data Flows) infrastructure. CORAL provides a hierarchy of network controllers that monitor network behaviour and adapts network protocol parameters on demand. It is built on top of rich network control abstractions and is hardware-independent. Our facility offloads protocol functionality...
Network Address Translation has often been described as an aberration in the evolution of the Internet, and one that will be removed with the completion of the transition of IPv6. This is an opinion in support of NATs, arguing that they are an important step in the evolution of the Internet and may well play a lasting role in this environment.
ISPs face difficulties in optimizing interdomain routing due to the single path routing constraint of BGP. A single best path makes it difficult to optimize routing and is unable to satisfy various application requirements of customers. In this paper, we present a new routing architecture for ISP edge network which breaks this constraint and allows the operator to flexibly assign interdomain paths...
With the fast industrial deployment of software-defined networking (SDN) and network function virtualization (NFV) technologies, network function policy enforcement in large scale virtualized networks becomes a key challenge for network management. Distributed policy enforcement heavily involves network policy space analysis, where set operations consume most of the computation. Based on spatial projection...
The role of energy in wireless sensor networks (WSN) becomes very important when network is unattended and it is not possible to recharge sensor node's battery in the sensing region many times. Due to this limited battery energy of sensor nodes it becomes a challenge for WSN to maintain proper functioning for a long time. So for the enhancement in network lifetime of the WSN, here we propose a modified...
Delay tolerant networks have already evolved as a pragmatic solution to various requirements such as delayed routing in wireless networks. They can also be used in place of traditional wireless networks in the border areas or highly sensitive areas, thus contributing to the data security in such places. In this paper, a border security architecture has been proposed where DTN is used for transferring...
Software-Defined Optical Network (SDON) incorporates the technologies of Software-Defined Network (SDN) into the comprehensive solutions of traditional optical network, which greatly improves the weaknesses of the traditional optical network, including inadequate enforcement of control, inefficient utilization of resource and so on. Based on the improved SDON architecture, this paper did lots of research...
Software-Defined Networking (SDN) is an emerging architecture and offers advantages over traditional network architecture, while there exist some scalability challenges. In this paper, we propose a multicast routing algorithm for SDN with segment routing to serve the bandwidth requirement of a multicast routing request. Our algorithm considers the balance of traffic load for network resource of link...
Leveraging Software-Defined Networking (SDN) and middleboxes, application-level policies can be propagated to the network. SMART is an SDN middlebox architecture that differentiates network flows based on tenant inputs. By leveraging FlowTags software middlebox in addition to the OpenFlow rules, it supports a larger scope of tenant preferences and rules from the application layer to alter the network...
In future mobile networks, e.g., 5G, emerging IoT services are expected to support billions of IoT devices with unique characteristics and traffic patterns. In this paper we propose an SDN-based IoT Mobile Edge Cloud Architecture (SIMECA1) which can deploy diverse IoT services at the mobile edge by leveraging distributed, lightweight control and data planes optimized for IoT communications. We prototyped...
Global IP traffic is forecast to triple by 2020 to reach 2.3 ZB per year. Such an explosion will inevitably be the catalyst of Operator infrastructure transformation. In this context, SDN is the technology that is shaping the future of carriers' networks. It offers the opportunity to implement more powerful control algorithms. In this perspective, we put forward a SD-WAN architecture to enhance the...
Multi-Path TCP (MPTCP) boosts network performance of applications by aggregating bandwidth over multiple paths using sub-flows of the same TCP connection. However, MPTCP suffers from three limitations: (1) it is an end-to-end protocol with no control over the network routes, and sub-flows might end up traversing the same links, (2) it has no dynamic control over choosing the optimal number of sub-flows...
For the incoming 5G mobile communications, enhanced cell coordination is deemed as crucial to maximize network throughput. In this paper we focus on the impact that the placement of coordination controllers in the metro optical network has on the performance of cell coordination, and we aim at verifying how throughput maximization can be achieved through optimized controller placement. Specifically,...
Advances in the Internet of Things (IoT) infrastructures are enabling the gathering, processing and inference of a wide array of data, enabling more agile decision management frameworks in several contexts, including vehicle routing and navigation. Coupled with crowd-sensing, these decision management frameworks gain further advantage in terms of data availability. This work concerns itself with safety...
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...
Alternative architecture of neural network of self-routing analog-to-digital converter is presented in this article. The main difference of this architecture is multilayer ring topology use to keep hardware costs down of neural network assemblage. Mathematical model of basic measuring neuron is given in view of applied topology. The number of basic measuring neurons can be reduced by means of offered...
As the development of processors/SoCs (System-on-Chips), NoC (Network-on-Chip) consumes an increasing fraction of the modern processors/SoCs power. Thus, designing energy-efficient NoC architecture is imperative. Multi-NoC (Multiple Network-on-Chip) behaves well in power gating for reducing leakage power, which constitutes a significant fraction of NoC power. In this paper, we propose CRA, a novel...
Software Defined networks (SDNs) paradigm tries to improve the network performance, facilitating the network management and the scalability basing on open-source software and adding a new entity called controller that manages the entire network. One of the goals of the controller is taking decisions in regards to routing instead of distributing it among the network nodes, as usual. However, this field...
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