KR100725005B1 - 다중 프로토콜 레이블 스위칭 망에서의 고속 재라우팅 방법 - Google Patents
다중 프로토콜 레이블 스위칭 망에서의 고속 재라우팅 방법 Download PDFInfo
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- KR100725005B1 KR100725005B1 KR1020000069456A KR20000069456A KR100725005B1 KR 100725005 B1 KR100725005 B1 KR 100725005B1 KR 1020000069456 A KR1020000069456 A KR 1020000069456A KR 20000069456 A KR20000069456 A KR 20000069456A KR 100725005 B1 KR100725005 B1 KR 100725005B1
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- lsp
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
- H04L45/502—Frame based
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0077—Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0081—Fault tolerance; Redundancy; Recovery; Reconfigurability
Abstract
Description
보호하고자 하는 다중점 대 점 LSP(Label Switched Path)의 각 LSR에서 우선순위를 설정하여, 상기 LSP의 출구 LSR(egress Label Switching Router)을 루트(root)로 하여 입구 LSR(ingress LSR)에 이르는 점 대 다중점 애니캐스트 트리(reverse anycast tree)로 구성된 백업 LSP를 설정하는 제 1 단계와, 상기 MPLS 망에서 하나의 링크에 장애(failure)가 발생하면, 상기 장애를 감지한 LSR이 트래픽 스트림을 역방향으로 루프백(loopback)시켜 상기 기설정된 우선순위에 의거한 상기 애니캐스트 트리를 통해 전송하는 제 2 단계를 포함하는 MPLS 망에서의 고속 재라우팅 방법을 제공한다.
Claims (4)
- 삭제
- MPLS(Multi-Protocol Label Switching) 망에서의 고속 재라우팅 방법에 있어서,보호하고자 하는 다중점 대 점 LSP(Label Switched Path)의 각 LSR에서 우선순위를 설정하여, 상기 LSP의 출구 LSR(egress Label Switching Router)을 루트(root)로 하여 입구 LSR(ingress LSR)에 이르는 점 대 다중점 애니캐스트 트리(anycast tree)로 구성된 백업 LSP를 설정하는 제 1 단계; 및상기 MPLS 망에서 하나의 링크에 장애(failure)가 발생하면, 상기 장애를 감지한 LSR이 트래픽 스트림을 역방향으로 루프백(loopback)시켜 상기 기설정된 우선순위에 의거한 상기 애니캐스트 트리를 통해 전송하는 제 2 단계를 포함하는 MPLS 망에서의 고속 재라우팅 방법.
- 제 2 항에 있어서,상기 제 2 단계는,상기 루프백된 패킷이 복수의 링크를 갖는 상향 방향의 머징 LSR에 도달하면 상기 각 링크에 기설정된 우선순위에 의거하여 상기 패킷을 전송하는 과정을 더 포함하는 MPLS 망에서의 고속 재라우팅 방법.
- 제 2 항에 있어서,상기 제 2 단계는,상기 MPLS 망을 구성하는 다수의 링크에서 다중 장애가 발생하면, 상기 다중 장애를 감지한 LSR이 전송 라우트(route)가 존재하지 않음을 나타내는 FIS(fault indication signal) 메시지를 발생하여 하향 방향의 LSR로 전송하고, 상기 하향 방향의 LSR은 상기 FIS 메시지에 의거하여 상기 루프백 트래픽을 상기 다중 장애가 발생하지 않은 다른 상기 역방향 애니캐스트 트리로 전송하는 것을 특징으로 하는 MPLS 망에서의 고속 재라우팅 방법.
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KR1020000069456A KR100725005B1 (ko) | 2000-11-22 | 2000-11-22 | 다중 프로토콜 레이블 스위칭 망에서의 고속 재라우팅 방법 |
US09/736,078 US6904018B2 (en) | 2000-11-22 | 2000-12-13 | Method for high speed rerouting in multi protocol label switching network |
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KR1020000069456A KR100725005B1 (ko) | 2000-11-22 | 2000-11-22 | 다중 프로토콜 레이블 스위칭 망에서의 고속 재라우팅 방법 |
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KR20020039557A KR20020039557A (ko) | 2002-05-27 |
KR100725005B1 true KR100725005B1 (ko) | 2007-06-04 |
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2000
- 2000-11-22 KR KR1020000069456A patent/KR100725005B1/ko active IP Right Grant
- 2000-12-13 US US09/736,078 patent/US6904018B2/en not_active Expired - Lifetime
Patent Citations (2)
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KR20000034137A (ko) * | 1998-11-27 | 2000-06-15 | 이계철 | 에이티엠 기반의 엠피엘에스에서 에프이씨에 따른차별화된 서비스 제공 방법 |
KR20000060986A (ko) * | 1999-03-22 | 2000-10-16 | 윤종용 | 에이-티-엠 시스템에서 다중 프로토콜 레이블 스위칭을 이용한가상 패스 병합 방법 |
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