상세정보
학술지
Protection Switching Methods for Point-to-Multipoint Connections in Packet Transport Networks
- 발행일
- 201602
- 출처
- ETRI Journal, v.38 no.1, pp.18-29
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 14MI1100, 차세대 광전달망 구축을 위한 테라급 광-회선-패킷 통합 스위칭 시스템 기술개발, 이종현
- 초록
- In this paper, we discuss the issues of providing protection for point-to-multipoint connections in both Ethernet and MPLS-TP-based packet transport networks. We introduce two types of per-leaf protection-linear and ring. Neither of the two types requires that modifications to existing standards be made. Their performances can be improved by a collective signal fail mechanism proposed in this paper. In addition, two schemes - tree protection and hybrid protection - are newly proposed to reduce the service recovery time when a single failure leads to multiple signal fail events, which in turn places a significant amount of processing burden upon a root node. The behavior of the tree protection protocol is designed with minimal modifications to existing standards. The hybrid protection scheme is devised to maximize the benefits of per-leaf protection and tree protection. To observe how well each scheme achieves an efficient traffic recovery, we evaluate their performances using a test bed as well as computer simulation based on the formulae found in this paper.
- KSP 제안 키워드
- Computer simulation(MC and MD), MPLS-TP, Packet transport, Protection Scheme, Protection switching, Root node, Service Recovery, Test-bed, fail mechanism, point-to-multipoint, recovery time