/pdf/arquitectura-de-comunicacoes-d-proteccao-comando-e-controlo-3z14vsrzl2.pdf

Arquitectura de comunicações d Protecção, Comando e Controlo da

Industrial Ethernet are widely used in industrial control system, but the requirement of high reliability and stability for control system limits the application of industrial Ethernet. Providing high available fault-tolerant capability on the large control systems becomes a very important issue. In this paper, three industrial Ethernet based redundancy protocols are presented: They are Single-LAN mode redundancy protocol, Dual-network backup and parallel mode redundancy protocol. Based on the EPA (Ethernet for Plant Automation EPA) communication protocol stack, the system architecture, frame structure and communication procedures are introduced. The performance of these approaches is demonstrated through experiment and analysis.

Research of fault-tolerance technique for high availability Industrial Ethernet

Ethernet, which has traditionally been the dominant technology in local area networks, is now facing new challenges due to the fact that networks have scaled and today's applications require more bandwidth and increased robustness against failures. The limitations of Ethernet are mainly imposed by the spanning tree protocol, which is necessary to prevent loops and provide redundancy in a switched network. The successful deployment of Ethernet over MPLS in the metro area have proved that Ethernet LANs can be further enriched with the services enabled by the label switching technique. In this article, we propose a new LAN interconnection technique based on label switching, which enhances network services, simplifies switch functionalities, while remaining flexible enough to be easily deployed in most LAN environments

/pdf/a-new-scheme-for-interconnecting-lans-with-label-switching-39zzys5osy.pdf

T.K. Feuzeu

Papers

A new scheme for interconnecting LANs with label switching bridges