Multiple distributed controllers have been used in software-defined networks (SDNs) to improve scalability and reliability, where each controller manages one static partition of the network. In this paper, we show that dynamic mapping between switches can efficiency managing traffic load variations. particular, propose balanced (BalCon) BalConPlus, two SDN switch migration schemes achieve balance among with small cost. BalCon is suitable for scenarios network does not require a serial...

When Connected Autonomous Vehicles (CAVs) request routing in a driving environment with Intersection Management (AIM) systems, planner collects the demands and optimizes routes coordinated manner to reduce overall travel times. In practice, however, are massive, especially large-scale traffic network. As result, centralized fails scale out accommodate growing requests, causing severe scalability issue. This paper presents holistic solution for scalable CAV by enabling hierarchical...

Current Network Function Virtualization (NFV) with Virtualized Functions (VNFs) running as virtual machines on commodity servers enables flexibility to Service Chaining (SFC). Specific applications may require Quality of (QoS) end-to-end latency. However, the processing delay and queuing VNFs varies resource configurations (vCPU vMemory), well physical usage (traffic amount, CPU utilization). Moreover, packet delays are randomly distributed, instead a fixed value. To accurately model latency...

The recent emergence of Connected Autonomous Vehicles (CAVs) enables the Intersection Management (AIM) system, replacing traffic signals and human driving operations for improved safety road efficiency. When CAVs approach an intersection, AIM schedules their intersection usage in a collision-free manner while minimizing waiting times. In practice, however, there are pedestrian road-crossing requests spillback problems, blockage caused by congestion downstream when load exceeds capacity. As...

The advanced controls of Connected Autonomous Vehicles (CAVs) have enabled complex traffic management for higher efficiency and safety, such as dynamic lane assignment non-signalized autonomous intersection (AIM). Unlike traditional intersections, AIM does not rely on the settings signal phases or traffic-light cycles controlling traffic, measurements congestion can no longer be based these two settings. Moreover, in CAV environment, use more response to real-time demands policy AIM....

Modal analysis measurements have been made on two concert grand piano soundboards and a finite element model to describe the vibrational characteristics of these has developed in order explore possibility using both techniques designing new soundboards. To provide an experimental basis for model, modal were soundboards, each mounted rim. Then soundboard was constructed. The resonant frequencies mode shapes first few modes match very well with those found experimentally analysis....

To operate a reliable SDN network, the control plane should be robust in order to guarantee correctness of traffic forwarding. For in-band control, flows along with data without dedicated network. Thus, failure may isolate switches from and lead erroneous forwarding behavior. In this paper, we design plane, FASIC, which can bootstrap network autonomously adaptively span control-link switching mechanism. By implementing our Open vSwitch (OVS), OpenDayLight OVSDB Integration (ODL-OVSDB)...

A three-dimensional axisymmetric elasticity problem pertaining to the contact stresses between a smooth rigid sphere and an infinite elastic solid with spherical cavity of same diameter has been considered. Uniaxial loading is applied at infinity, resulting in separation along portion boundary solid. The considered as mixed boundary-value elasticity. angle stress distributions surface are determined by solving set dual-series equations associated Legendre polynomials. Numerical results presented.

Load balancing at transport layer is an important function in data centers, content delivery networks, and mobile where per-connection consistency (PCC) has to be met for optimal performance. Cloud-native L4 load balancers are commonly deployed as virtual network functions (VNFs) a critical forwarding element modern cloud infrastructure. We identify imbalance among service instances the main cause of additional processing delay caused by transport-layer balancers. Existing rely on one two...

Malware detection is an important issue for network security, especially the Internet of Things (IoT) network. Traditional intrusion system (NIDS), running on external host servers, are not scalable ever-increasing IoT traffic and waste time transmitting data back forth. Here, we propose a novel architecture called on-switch malware detector that utilizes programmable switch machine-learning technique to achieve better performance detecting malicious flows in The mainly consists four...

Communication is essential for Cooperative Intelligent Transportation Systems (C-ITS) to achieve better road efficiency, especially Autonomous Intersection Management (AIM) which coordinates vehicles pass the intersection safely and efficiently. delays cause severe safety crises (i.e., collisions) vehicular-performance degradation regarding capacities vehicular delays. Targeting delays, network researchers have been working on low-latency communication technologies, C-ITS proposed...

Encrypted Malicious Traffic (EMT) classification is crucial in Internet of Things (IoT) networks, securing the communication encrypted by various lightweight schemes for IoT devices. However, existing frameworks require high computational power and have accuracies that are susceptible to variety encryption IoT. Here, we propose a novel framework (named SSPP), utilizing three models take encryption-independent features EMT classification. According experiments, SSPP achieves maintains 97.54%...

Microburst is a severe issue in 5G networks, causing packet drop and high latency. Recent research has applied programmable switches to detect mitigate microbursts real time. However, existing systems suffer from three major problems, including transmission delay, rate, possible mitigation failure. Here, we proposed Programmable Switch-base Mitigation (PSMM) solve the problems with (1) in-switch recirculation (2) analytical threshold determination. The avoids need for detour during...

The fifth generation (5G) mobile communication network aims at providing high-rate, low-latency services. When a user subscribes chain of service functions (a.k.a. chain) from the telecom providers, Service Level Agreement (SLA) is specified according to his requirement. Deploying chains optimally has always been big issue. Several previous works have presented various strategies service-chain deployment for optimizing either latency or computational resources; however, over-optimization...

Network Function Virtualization (NFV) is emerging for service deployment in datacenters and how to efficiently deploying virtual network functions (VNFs) on VMs under SLA requirements an key topic. Previous studies often overlook the factor that deteriorates datacenter performance due unnecessary occupation inter-VM communication a function chain over network, thus motivating us develop Parcel-Fit. The concept of Parcel-Fit considers server capacities (i.e., CPU memory) status (i.e....

Intrusion prevention is significant to avoid device damage and financial losses. Researchers have proposed various Prevention Systems (IPS) prevent malware, including traditional SDN-based IPS. However, existing IPSs suffer from low throughput problems caused by detection rule-installation delays. Here, we propose a programmable switch-base IPS (named PS-IPS), which utilizes the switch CPU pipeline detect malware. PSIPS consists of four main components: (1) parser, (2) flow filter, (3)...

Thermal stresses induced into two joined plane strain sectors having different physical properties and subjected to a uniform temperature distribution are investigated. Considering the elastic equations of equilibrium, compatibility, stress-strain appropriate boundary conditions, airy stress functions formulated which describe structural characteristics sectors. Stress displacement relations then obtained. Numerical examples given illustrating usage general application derived expressions.

Abstract Power-train arrangements, such as a two-rotor system with one overhang, have wide spectrum of industrial applications, from workbench grinder to compressor-turbine unit. Based on typical dimension, flexural critical speeds both in the forward and backward whirl are calculated by commercial software package. These further analyzed varying shaft overhung, rotor inertia gyroscopic effect. Parametric analysis would enable designers make trade-off study obtain satisfactory operation. In...