최선형 서비스만을 지원하고 있는 현재 라우터들의 인터넷 속도 개선을 위하여 MPLS ATM 시스템이 제안되었다. 하지만 MPLS ATM 시스템도 다양한 응용을 사용하는 인터넷 사용자들을 충분히 만족시키지는 못한다. 따라서 서비스 클래스에 따라 서비스 처리를 구별하는 차별화 서비스 지원이 요구된다. 본 논문에서는 MPLS ATM시스템에 차별화 서비스를 지원하기 위하여 각 FEC에 서비스 클래스별로 설정된 LSP를 제어하는 방법과 응용 범주에 따라 차별화 서비스를 정하는 응용 기반 마킹 알고리즘을 이용한 포워딩 절차를 제안한다. 그리고 기존의 MPLS ATM 시스템의 변경을 최소화하여 구현할 수 있는 응용 기반 포워딩 엔진을 설계하고 우선 순위가 높은 응용 법주에 대해 제안한 포워딩 알고리즘이 기존 포워딩 알고리즘 보다 성능이 우수함을 제시한다.
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