한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

MPLS 통신망에서의 신속한 장애복구를 위한 서브네트워크 기반의 세그먼트 단위 자동복구 기법

Subnetwork-based Segment Restoration for fast fault Recovery in the MPLS network

  • 신해준 (영남대학교 대학원 정보통신공학과 차세대 네트워킹 연구실) ;
  • 장재준 (영남대학교 대학원 정보통신공학과 차세대 네트워킹 연구실) ;
  • 김영탁 (영남대학교 대학원 정보통신공학과 차세대 네트워킹 연구실)
  • 발행 : 2002.11.01
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초록

본 논문에서는 복구시간의 최소화 및 효율적인 복구 자원 사용을 위한 서브네트워크 기반의 세그먼트 복구 방법을 제안한다. 또한 서브네트워크의 분할에 있어서의 특성을 분석하여 서브네트워크의 크기와 그에 따른 자동복구 방법의 성능을 비교하고 분석한다. 세그먼트 복구는 대규모 통신망을 다수개의 소규모 서브네트워크로 분할하고, 각 서브네트워크 구간에 설정되어있는 세그먼트 별로 자동복구를 수행한다. 시뮬레이션 결과에서 세그먼트 자동복구 방법이 링크 자동복구보다는 복구 자원 사용 면에서 우수하였고 경로 자동복구보다는 복구시간 면에서 장점을 가지는 것을 확인할 수 있었다.

In this paper, we propose a subnetwork-based segment restoration scheme to reduce the restoration time and restoration resources. And we compare and analyze the restoration performance according to the size of divided subnetworks. Segment restoration is based on network partitioning where a large network is divided into several small subnetworks and the end-to-end data path is divided into multiple segments according to the subnetworks. In segment restoration, the link/node failure is restored by segment instead of end-to-end path. Because most faults are restored within the subnetwork, the restoration performance can be improved. From the simulation analysis, we verified that the proposed segment restoration has advantage of restoration time and backup resource utilization.

키워드

참고문헌

  1. IETF Internet Draft Multi-protocol Label Switching Architeecture IETF MPLS working group
  2. The technical introduction on internet service based on ATM ETRI
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