경로 복구는 MPLS 망에서 작업 경로의 링크나 노드에 장애가 발생했을 때 트래픽을 복구 경로를 통하여 전달함으로써 신뢰성 있는 서비스를 제공하는 기술이다. 망의 생존성을 높이기 위하여 경로 복구 방법은 MPLS 망에서 필수적으로 요구된다. 본 논문에서는 링크 장애시에 작업 경로의 이중화를 통하여 경로를 복구하는 방법과 이중화된 모든 링크나 노드에 장애가 발생했을 때 OAM셀을 이용한 장애 검출 방법을 제안한다. 특히, 높은 우선 순위의 트래픽를 위한 경로 복구 방법으로는 경로 이중화가 매우 효율적이다. 그리고 이중화 경로를 이용한 복구 시스템의 성능을 분석하고, 우선 순위가 높은 트래픽에 대해서 제안한 경로 복구 방법이 기존 방법보다 복구 성능이 우수함을 시뮬레이션을 통하여 제시한다.
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