一种基于分段共享的预测式错误恢复机制

A Prognostic Segment-Based Sharing Recovery Mechanism

1引言 路径错误恢复的目的在于自动地帮助网络管理者检测并且从错误状态中恢复,而无需人为的干涉,因此,不会引起网络用户的使用不便.通过应用一些错误恢复策略,服务提供者就能缩短错误的恢复时间和提高错误正确恢复的比率等,也就保证了服务质量协议(Service Level Agreement).

In MPLS/GMPLS networks, a range of restoration schemes will be required to support trade-offs between service interruption time and network resource utilization- Although,the tradition protection-based and reservation-based recovery schemes exist some merits,but they can not provide a good trade-offs. In this paper,we propose a Prognostic Segment-based Sharing Recovery Mechanism(PSSRM)for restoration of connection over shared bandwidth in a fully distributed GMPLS architecture. PSSRM can use QoS constraints such as bandwidth and recovery time to obtain the good trade-offs of recovery time and resource efficiency.