Service function chaining (SFC) enables network operators to flexibly provide diverse services such as Internet-of-Things (IoT) and mobile applications. SFC technologies are required offer stable guaranteed quality-of-service (QoS) even in the circumstances of dynamically-changing resource demands traffic volumes. To meet QoS requirements against time-varying environment, infrastructure providers need dynamically adjust amount computational resources CPU assigned virtual functions (VNFs)...

Optical packet switch systems with fiber delay line (FDL) buffers provide high-throughput, bit-rate independent, energy-efficient, and transparent forwarding. However, the FDL buffer experiences scalability issues and, thus, cannot accommodate a large amount of network traffic. In this paper, we first investigate performance buffer. Due to discrete-time nature buffer, throughput Transmission Control Protocol (TCP) applications is not improved drastically in spite addition extra FDLs. Then,...

Modeling the Internet is vital for network researches.Recent measurement studies on topology show that degree distribution obeys power-law distribution.However, only does not determine performance of control methods.As previous have shown, one important factors to characterize methods in a structure topologies.However, other characteristics, which are even more important, link capacities and node processing because these characteristics particular communication networks.In this paper, we...

We demonstrated an 8-fiber-delay-line optical buffer with SOA switches for forwarding 100Gbit/s IP-packet-encapsulated packets. derived the maximum number of node hops under error-free operation when scale is increased up to 32 FDLs.

Service Function Chaining (SFC) has been proposed as an enhanced Software-Defined Networking/Network Virtualization (SDN/NFV) technology to accommodate the network service requirements of various applications. In particular, provisioning functions, such in-network caching, transcoding, and multicasting, improves Quality Experience (QoE) video streaming services reduces traffic load. However, these functionalities require high computational resources nodes, over-provisioning causes another...

Network function virtualization (NFV) technology enables the deployment of a distinct network slice composed various virtualized functions (VNFs) required for offering communication service. As user population or traffic volume fluctuates, capacity slices must be dynamically adjusted. It is necessary to decide whether place VNFs in appropriate locations such that quality services (QoS) guaranteed while optimally utilizing allocated resources. The above challenge can addressed by solving an...

Software-defined networking (SDN) technology enables us to flexibly configure switches in a network. Previously, distributed SDN control methods have been discussed improve their scalability and robustness. Distributed placement of controllers backing up each other enhance However, these techniques do not include an emergency measure against large-scale failures such as network separation induced by disasters. In this study, we first propose partitioning method create robust plane (C-Plane)...

Network function virtualization (NFV) enables network operators to flexibly provide diverse virtualized functions for services such as Internet of things (IoT) and mobile applications. NFV platforms are required offer stable guaranteed quality-of-service (QoS)even during dynamically changing resource demands traffic volumes. To meet the QoS requirements against time-varying environments, infrastructure providers must adjust amount computational resources, CPU, assigned virtual (VNFs). agile...

Software Defined Networking (SDN) technology enables us to configure switches in a network flexibly. Previously, distributed SDN control methods have been discussed improve their scalability and robustness. Distributed placement of controllers reduces computation load each controller backing up other enhances However, these techniques do not include an emergency measure against large-scale failures such as separation induced by disasters. In this paper, we design reconfiguration especially...

End-to-end network slicing over a multi-layer transport is demonstrated, showing that automation in coordination with edge cloud enables 5G applications such as autonomous driving vehicle and automatic resource management for service function chaining.

We have been developing an optical packet and circuit integrated network (OPCInet) to provide diverse services on the same metro/core fiber network. In this paper, we propose develop a control method realize automatic programmable data transfers from OpenFlow networks (OFNs) OPCInet. An controller (OFC) determines how where transfer each flow OPCInet (i.e. resource selection) basis of information users' quality-of- service (QoS) requirements, performances in traffic OFNs. For this, define...

Network function virtualization (NFV) enables network operators to flexibly provide diverse virtualized functions for services such as Internet of things (IoT) and mobile applications. To meet multiple quality service (QoS) requirements against time-varying environments, infrastructure providers must dynamically adjust the amount computational resources, CPU, assigned virtual (VNFs). agile resource control adaptiveness, predicting server load via machine learning technologies is an effective...

Measurement studies of the Internet topology have revealed that degree distribution exhibits a power-law attribute. That is, probability P(k) node has k outgoing links follows ~ k^{γ}. However, it is known alone does not determine trafficlevel behaviors in topologies. In this paper, we investigate packet-level delay behavior topologies having distribution. Our results show packet actual ISP also power-law, while model-based not. We then structural differences between topologies, and...

The 5th generation (5G) or beyond 5G (B5G) mobile networks offer a range of services over the existing infrastructure. Service function chaining (SFC) provides platform for flexible resource management by dynamically allocating and adjusting resources to virtual network functions (VNFs). To satisfy quality service (QoS) requirements, system requires migration VNFs from current server other servers that have sufficient resources. Previously, we discussed an artificial intelligence (AI)-based...

Optical packet switch systems with fiber-delay-line (FDL) buffers provide high-throughput, energy-efficient, and transparent forwarding. However, the FDL buffer experiences scalability issues, thus, cannot accommodate a large amount of network traffic. In this paper, we first investigate performance buffer. Due to discrete-time nature buffer, throughput is not improved drastically in spite adding extra FDLs. Then, propose optical electronic combined architecture. The composed supplementary...

Measurement studies of the Internet topology revealed that degree distributions topologies follow a power law. That is, existing probability nodes having k links is proportional to k^{−γ}. However, only power-law distribution does not determine network-level performance networking methods. structural characteristics other than are essential discuss behavior In this paper, we investigate traffic dynamics on ISP's router-level where exhibits attribute and each interacts via end-to-end flow...

Software defined networking (SDN) and network function virtualization (NFV) technologies enable us to create, manage operate services more flexibly. Distributed placement of controllers reduces the response time control operations distributes load controllers. Many prior studies have investigated several algorithms controller in networks. However, those take longer computation require a lot information. Thus, they are difficult use, especially large To simplify problem, we propose...

We show a multi-cloud-based network infrastructure for Smart World with demonstrating several types of control and service including PTP devices Private LTE, AI-based SFC Platform, WhiteBox-based reliable routing, disaggregated SDM network.

Hierarchical optical networks will be a viable solution in creating large-scale of the future. The control network resources granularity both wavelength and waveband that consists fixed number wavelengths; thereby, they can reduce signalling processing load efficiently create virtual private networks. Meanwhile, as scale increases, multi-stage switch architecture is effective reducing hardware cost. In this paper, we develop distributed path plane for large-degree, hierarchical consist nodes...