Multiple Ethernet Research Articles

Sunrays Microcomputer FDDI Optical Fiber Computer Network Security System Design

Background: In order to solve the safety hazard of computer network security, a special congestion control strategy is adopted. Methods: This strategy is used to discuss the design and implementation technology of a network adapter, a bridge, concentrator, a device driver, Netware interface software, and a complete set of FDDI optical fiber computer networks. The following functions i.e. source address tracking, frame forwarding, frame format conversion, spanning tree protocol, and other functions were achieved. Results: The research shows that the Sunrays micro-computer follows the SNMP simple network management protocol, which can support multiple Ethernet protocols and multiple ports, and the number of ports is scalable. Conclusion: The proposed method is useful for the multiple input and output ports in a computer network with security enabled congestion control for data traffic.

Soc-approach for Safety-oriented Multi-channel Communication in Industrial Application of Human-robot-collaboration (HRC)

The importance of human-robot collaboration systems in industrial applications has increased due to the orientation towards the smart factory approach. To ensure the safety of such systems, collision avoidance techniques based on millimeter-wave radar sensors are used. Safe communication between the robot and the radar sensor is ensured by using the safety system on a chip based on 1oo2D architecture. The design and prototyping of a multi-channel communication FPGA-based development board is presented. Furthermore, the FPGA implementation of SoC with multiple Ethernet MAC interfaces based on various soft cores is demonstrated.

On the Efficiency of Flexible Ethernet Client Architectures in Optical Transport Networks [Invited

The data-center interconnection (DCI) market has been rising sharply for some time, leading to the development of networking solutions tailored specifically for it. On the side of the transport network, DCI devices are characterized by simple, footprint-efficient designs focused on scalability, but still leverage the benefits of flexible-rate transponders on the line-side, to extract the most from costly optical transport infrastructures. Accompanying this evolution arose the need for a technology that could provide a flexible client layer where aggregation was done outside the transport device, but flows could still be efficiently mapped to flexible-rate transponder modules. In this context, the appearance of Flex Ethernet (FlexE) is targeted at decoupling the rates of interfaces connecting routers to transport boxes, from the actual flows traversing them. Through the introduction of an additional mapping/de-mapping layer, the capacity of multiple Ethernet interfaces can be virtualized in a resource pool for different flows. This paper addresses the application of FlexE to dense wavelength division multiplexing (DWDM) transport scenarios. Specifically, it evaluates how agnostic to FlexE a transport box should be, considering the potential trade-off between its complexity and the ability to efficiently fill lightpaths. Through a network simulation handling the provisioning of Ethernet flows in a DCI scenario, we evaluate the various FlexE use cases envisioned for transport networks, and how they affect the efficiency of router port usage and transport box provisioning, as well as their effect on the capacity of the DWDM layer.

Real-Time Ethernet to Software-Defined Sliceable Superchannel Transponder

Optical Ethernet gains great success in varied optical domains. Ethernet while providing the elastic allocation of bandwidth per flow is currently restricted to being transported over fixed-rate fixed-grid optical channels. However, as data transmission and switching in optical networks is becoming more flexible, the current Ethernet to optical interface with fixed functions and fixed design face great challenges for applications in an elastic optical network. In addition, the coexisted Ethernet standards in optical networks also need a converter to transform low-capacity Ethernet signals to high-capacity Ethernet signals. In this paper, we propose a real-time Ethernet to software-defined programmable sliceable transponder based on network function programmable Ethernet to elastic optical networks (ETH-EON) interface, multiformat supported transmitter and architecture-on-demand (AoD)-based superchannel signal processor. The transponder parses the Ethernet traffic and then transports it over a number of optical carriers with the appropriate baud-rate, modulation format and associated spectral bandwidth. Software-defined reconfigurability of both electronic (i.e., FPGA) and optics (AoD) allow for a flexible transponder to offer high Ethernet to optical transport efficiency. Ethernet capacities from 40 Gbit/s to 2.88 Tbit/s can be provided by reconfiguring the modulation formats and the used optical carrier number. The modulation format adaptability also provides a tradeoff between transmission capacity and transmission distance, to optimize network performance. The designed software-defined sliceable elastic transponder aggregate multiple Ethernet traffic flows and send spectral-efficient signals through the elastic optical network with simple Ethernet protocols, avoiding using complex and expensive OTN technologies. Finally, we demonstrate the converter in elastic optical networks for several application scenarios.

TCP performance in multi-EPON access networks under different optical core switching paradigms

In this paper the end-to-end TCP performance of a hybrid network composed of multiple Ethernet Passive Optical Networks (EPONs) in the access segment connected to the same edge node of a core network is evaluated. Three possible core network paradigms are considered: Optical Circuit Switching (OCS), Optical Burst Switching (OBS) and Optical Packet Switching (OPS). TCP performance is evaluated through simulations with ns-2. The hybrid network scalability is assessed by varying the number of EPONs connected to the same edge node and the number of Optical Network Units (ONUs) per EPON. Interoperability issues between access and core are investigated and the impact of the most important network parameters is highlighted. The three transfer modes considered for the core network are properly compared under different input conditions, discussing the related trade-offs that may lead to the most suitable choice based on the specific application scenario. Finally, some design issues are investigated with reference to emerging Long-Range EPON (LR-EPON) solutions.

Performance Analysis and Evaluation of Hybrid Network using different Integrated Routing Protocols

The increasing demand of computer communication networks are growing rapidly day by day. With the growing need to distribute applications across multiple networks and the availability of high capacity, high-performance intermediate switching nodes, and networks, an efficient routing mechanism has become the core requirement. This research primarily focuses on the design and performance of Hybrid Network incorporating different intra-domain routing algorithms. The performance evaluation of different routing algorithms for the transmission of video- and voice-data streams over Hybrid network is demonstrated in this work.. This allows multiple Ethernet point-to-point links to be bundled into one logical full-duplex channel for Fast Ethernet (10BaseT, 100BaseT, or 1000BaseX). These applications require some QoS support such as guaranteed bandwidth, less delay, less jittering effect and low error rate. The QoS relies on a number of factors along with a suite of robust routing protocols that help to accomplish the task of moving datagram from source to destination with high bandwidth and low delay rate. An effective intra-domain network routing protocol may make distributed applications more efficient across multiple networks with the availability of high capacity and high-performance. A variety of intra-domain routing protocols such as Routing Information Protocol (RIP) and Open Shortest First Protocol (OSPF), Interior Gateway Protocol (IGRP) and Enhanced Interior Gateway Protocol (EIGRP) are available and widely used in designing such high capacity and high performance networks with optimum QoS. We evaluate the performance of these intra-domain routing protocols with IS-IS to recommend the optimum routing protocol to use to provide optimum QoS by means of OPNET Simulator TM. In this thesis work, the following objectives are considered and demonstrated.

Design of multiple Ethernet ports anti-jamming system based on PowerPC

Design of multiple Ethernet ports anti-jamming system based on PowerPC

Embedded Network Controller and Application in CNC System

For the inherent deficiencies of fieldbus control system, the thesis is designed and implemented a kind of embedded network controller with AT91RM9200 which is a 32bits microprocessor, multiple Ethernet interfaces and field bus interface for embedded network controller, the establishment of a Windows CE-based embedded software development platform. Embedded Network Controller to the CNC system, CAN bus and DSP by matching the system to improve timeliness and reliability, a remote distributed measurement and control and communication purposes.

New image sensor offers multiple inspections and Ethernet interface

New image sensor offers multiple inspections and Ethernet interface

Techniques for pipelined broadcast on ethernet switched clusters

By splitting a large broadcast message into segments and broadcasting the segments in a pipelined fashion, pipelined broadcast can achieve high performance in many systems. In this paper, we investigate techniques for efficient pipelined broadcast on clusters connected by multiple Ethernet switches. Specifically, we develop algorithms for computing various contention-free broadcast trees that are suitable for pipelined broadcast on Ethernet switched clusters, extend the parametrized LogP model for predicting appropriate segment sizes for pipelined broadcast, show that the segment sizes computed based on the model yield high performance, and evaluate various pipelined broadcast schemes through experimentation on Ethernet switched clusters with various topologies. The results demonstrate that our techniques are practical and efficient for contemporary fast Ethernet and Giga-bit Ethernet clusters.

An FPGA-based network intrusion detection system with on-chip network interfaces

Network intrusion detection systems (NIDS) are critical network security tools that help protect computer installations from malicious users. Traditional software-based NIDS architectures are becoming strained as network data rates increase and attacks intensify in volume and complexity. In recent years, researchers have proposed using FPGAs to perform the computationally-intensive components of intrusion detection analysis. In this work, we present a new NIDS architecture that integrates the network interface hardware and packet analysis hardware into a single FPGA chip. This integration enables a higher performance and more flexible NIDS platform. To demonstrate the benefits of this technique, we have implemented a complete and functional NIDS in a Xilinx Virtex II Pro FPGA that performs in-line packet analysis and filtering on multiple Gigabit Ethernet links using rules from the open-source Snort attack database.

HUSTserver: Implementation for reliable and high-performance network attached storage system

Network-attached storage (NAS) with the properties of improved scalability, simplified management, low cost and balanced price-performance, is desirable for high performance storage systems applied to extensive areas. Unfortunately, it also has some disadvantages such as increased network workload, and inconvenience in disaster recovery. To overcome these disadvantages, we propose a channel-bonding technique and provide hot-backup functions in the designed NAS system, named HUSTserver. Channel bonding means merging multiple Ethernet channels into integrated one, and that the data packets can be transferred through any available network channels in a parallel mode. The hot-backup function provides automatic data mirroring among servers. In this paper, we first describe the whole system prototype from a software and hardware architecture view. Then, multiple Ethernet and hot-backup technologies that distinguish HUSTserver from others are discussed in detail. The findings presented demonstrate that network bandwidth can be scaled by the use of multiple commodity networks. Dual parallel channels of commodity 100 Mbps Ethernet are both necessary and sufficient to support the data rates of multiple concurrent file transfers. And the hot-backup function introduced in our system provides high data accessibility.