Research of Ethernet Ring Protection Technology

2014 ◽  
Vol 556-562 ◽  
pp. 6026-6029
Author(s):  
Wei Chen ◽  
Qiang Yu ◽  
Peng Fei Yu ◽  
Jie Ren ◽  
Zhi Huang
Keyword(s):  
Spanning Tree ◽  
High Reliability ◽  
Convergence Time ◽  
Ring Networks ◽  
Advantages And Disadvantages ◽  
Spanning Tree Protocol ◽  
Single Ring ◽  
Protection Technology ◽  
Time Requirements ◽  
Ring Protection

Ethernet ring networks are used widely recently, and the research on the ring protection switching is carried out. Spanning Tree Protocol (STP) was the first technology to control ring networks to avoid the storm. Rapid Spanning Tree Protocol (RSTP) is an upgraded version of STP[1]. RSTP can provide shorter convergence time than STP. Ethernet Automatic Protection switching (EAPS) is designed for a single ring topology [2]. The convergence time of EAPS is below 50ms and EAPS can meet the real-time requirements and high-reliability requirements of network services.G.8032 is a standardized scheme for achieving sub-50ms service protection in ring topologies which is recommended by ITU-T[3]. This paper intelligent Ethernet ring protection technologes about Spanning Tree Protocol, RFC3619 and G.8032 .These technologies appear in different times, and have their advantages and disadvantages. This article outlines these Ethernet ring protection switching technology and explains their basal principles.

Second Paper: Failure-Survival Automatic Flight Control Systems for Aircraft with Particular Reference to a High Reliability Electrohydraulic Actuator

1965 ◽  
Vol 180 (1) ◽  
pp. 246-259
Author(s):  
R. Ruggles
Keyword(s):  
Control System ◽  
Control Systems ◽  
Flight Control ◽  
High Reliability ◽  
Supply System ◽  
Design Criteria ◽  
Flight Control System ◽  
Advantages And Disadvantages ◽  
System Configurations ◽  
Very High

The author discusses some of the problems of failure-survival automatic flight control systems and suggests some basic ground rules as design criteria. The advantages and disadvantages of some of the main types of system are discussed: duplex, triplex, triple component, duplicate-monitored and quadruplex systems being covered. In particular, a quadruplex actuator is described which has been designed and developed mainly for automatic flight control system applications where a very high degrees of failure-survival capability is required. A detailed failure analysis of the various systems is carried out and the importance of the electrical and hydraulic supply system configurations and failure rates is brought out.

scholarly journals Optimasi Jaringan dengan Spanning Tree untuk Congestion Management

2014 ◽  
Vol 5 (1) ◽  
pp. 53
Author(s):  
Mayliana Mayliana
Keyword(s):  
Network Optimization ◽  
Spanning Tree ◽  
Data Stream ◽  
Congestion Management ◽  
Dense Network ◽  
Broadcast Storm ◽  
Spanning Tree Protocol ◽  
Optimal Network ◽  
Network Speed ◽  
The Right

A proper network optimization is needed to deal with problems on the network and to minimize latency in the data flow in a dense network. The data stream is directed into the right channels so that the optimal network speed and latency can be minimized. Spanning tree is one of the algorithms that can be used. The purpose of the Spanning tree is to prevent and reduce the loops in the network by negotiating free path and as well as to increase network uptime through redundancy (back-up). To comprehend spanning tree, the first important thing to know is how bridges and switches perform their functions. The more switches used, the use of the spanning tree becomes more important. With the spanning tree protocol, a broadcast storm can be prevented that can achieved network optimization.

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