특강세미나
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세미나 - 제158회 정보통신 콜로퀴엄
IT외국교수활용사업단 | 2006-02-09 | 조회 825
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제158회 정보통신 콜로퀴엄
주제 : Seamless Detection of Link and Node Failures for Local Protection in MPLS
요약문 : We consider a label switched network in which backup paths are provided using a local restoration scheme [1],[2]. A node receives a failure notification if either an adjacent link or a neighboring node fails. Such a node, however, cannot distinguish between link and node failures and must do one of two things. 1) Activate backup paths corresponding to both the link and the node suspected to have failed, or 2) Employ a mechanism to establish whether it is a link or a node that has failed, and activate the requisite backup paths once the failure event has been identified. Incase backup paths are activated without disambiguating between link and node failure, bandwidth sharing estimates for a backup path must be revised to take into account concurrent activation of certain additional backup paths. Consequently, a greater amount of bandwidth has to be provisioned when the failure detection is ambiguous. In the case wherein a node waits to identify the exact failure before activating the requisite backup paths, there is increased switchover latency subsequent to the network failure. Evidently, the increased switchover latency translates into a greater traffic disruption following a network failure.
강 사 : Zartash Afzal Uzmi (Lahore University of Management Sciences PAKISTAN)
· 일시 및 장소 : 2006년 2월 10일(금) 오후 1시 30분
(1:30PM, Fri., Feb. 10, 2006), 공대 7호관 5층 523호실
※ 학부 및 대학원생의 많은 참여를 부탁드립니다.
I T 분 야 외 국 교 수 활 용 사 업 단
연락처 : 김인수 (℡ : 270-4165 E-mail : cnuit@chonbuk.ac.kr)
주제 : Seamless Detection of Link and Node Failures for Local Protection in MPLS
요약문 : We consider a label switched network in which backup paths are provided using a local restoration scheme [1],[2]. A node receives a failure notification if either an adjacent link or a neighboring node fails. Such a node, however, cannot distinguish between link and node failures and must do one of two things. 1) Activate backup paths corresponding to both the link and the node suspected to have failed, or 2) Employ a mechanism to establish whether it is a link or a node that has failed, and activate the requisite backup paths once the failure event has been identified. Incase backup paths are activated without disambiguating between link and node failure, bandwidth sharing estimates for a backup path must be revised to take into account concurrent activation of certain additional backup paths. Consequently, a greater amount of bandwidth has to be provisioned when the failure detection is ambiguous. In the case wherein a node waits to identify the exact failure before activating the requisite backup paths, there is increased switchover latency subsequent to the network failure. Evidently, the increased switchover latency translates into a greater traffic disruption following a network failure.
강 사 : Zartash Afzal Uzmi (Lahore University of Management Sciences PAKISTAN)
· 일시 및 장소 : 2006년 2월 10일(금) 오후 1시 30분
(1:30PM, Fri., Feb. 10, 2006), 공대 7호관 5층 523호실
※ 학부 및 대학원생의 많은 참여를 부탁드립니다.
I T 분 야 외 국 교 수 활 용 사 업 단
연락처 : 김인수 (℡ : 270-4165 E-mail : cnuit@chonbuk.ac.kr)
Count : 249
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