摘要：为了提升PTN大客户数据专线组网的可靠性，实现常用组网方式中的故障自动迂回功能，本文提出了采用多种组合保护的策略．分别在基于MPLS—TP和基于PBB的两种方式中，有效实现专线总头主备保护。通过网络运行测试，采用上述策略，可以有效降低大客户专线平均故障历时40％以上。
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Acta Mathematicae Applicatae Sinica Applied Mathematics and Mechanics China Petroleum Processing Petrochemical Technology Petroleum Science Chinese Optics Letters Acta Biochimica et Biophysica Sinica Applied Mathematics:A Journal of Chinese Universities Advances in Atmospheric Sciences Research in Astronomy and Astrophysics Journal of Integrative Plant Biology Journal of Systems Science and Complexity Communications in Theoretical Physics