Ethernet ring protection (ERP) is a new technology based on OAM (operations, administration, and maintenance) being
standardized by the ITU-T G.8032 working group. In this paper, we present the recent development of Ethernet ring
protection which is called FDB (filtering database) flush scheme and propose a new Ethernet ring protection technique
introducing a managed FDB using APS to deliver information how to fix FDB selectively. We discuss the current
development of the ERP technology at ITU-T and performance comparisons between different proposals.
The Ethernet technoglogy rapidly gains importance as becoming a dominant solution for a converged transport network. Recently added features such as QoS handling and OAM functions in the framework of ITU-T NGN provides a means for performance improvement to meet carrier-class network requirements. In addition, integration with newly developed T-MPLS by ITU-T offers a potential to replace current SDH/SONET-based network infrasctructure.
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