• Title/Summary/Keyword: MPLS

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A Simplified QoS Model for MPLS Networks (MPLS 네트워크를 위한 간략화된 QoS 모델)

  • Seo Seung-Joon;Kang Chul-Hee
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.30 no.4B
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    • pp.235-245
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    • 2005
  • In this paper, a simplified QoS model of MPLS-based backbone network. Conventional scheme proposed by IETF(IETF schem) is to embed a DiffServ model in MPLS network. However, this approach results in overall upgrade of MPLS system and so it is difficult to deploy this approach. Our proposed model, however, uses a Vidual Link which is a set of Label Switched Path(LSP) connected from an Ingress Label Edge Router(LER) to an Egress LER. In this model, Per-Hop-Behavior(PHB) is implemented only at each LSP in ingress LER and Core Label Switch Routers(LSRs) just guarantee each LSP's bandwidth, not service. This bandwidth guarantee service is fully provided by legacy MPLS model. Also we propose flow allocation mechanism and the flow distribution among LSPs of the virtual link by the flow according to the network status. To evaluate the simplified approach, the characteristics of the approach are compared logically with these of IETF's one through simulations.

Design and Performance Evaluation of IP VPNs based MPLS (MPLS 망 기반 IP VPN의 설계 및 성능 평가)

  • 박석천
    • Journal of Korea Multimedia Society
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    • v.3 no.2
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    • pp.148-156
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    • 2000
  • This paper proposed that an MPLS-based VPN using next-generation If switches and appropriate set of traffic engineering algorithms is the best way to implement QoS-capable IP VPNs. While ATM-based solution would not rely scalable the number of connections becomes too large, MPLS-based VPNs’ efficiency could be confirmed network delay time through performance evaluation. And we evaluated the performance about the If VPN based on proposed MPLS, at the result of evaluation. We figured out that delay increased more slowly in case of VPN based on MPLS comparing with the VPN based on ATM which has rapid delay increasement. Therefore we confirm that the VPN based on MPLS has high speed of packet processing and high degree of network efficiency through the performance evaluation.

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Traffic Engineering using Loss Detection in MPLS Networks (MPLS 네트웍에서의 Loss Detection을 이용한 트래픽 엔지니어링 방안 연구)

  • 이성협;염익준;박원배
    • Proceedings of the Korean Information Science Society Conference
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    • pp.163-165
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    • 2001
  • 본 논문에서는 먼저 Forwarding 방식의 라우팅 프로토콜인 MPLS(Multi-Protocol Label Switching)와 네트웍에서의 Traffic Engineering(TE)에 대한 개괄적인 설명과 함께, MPLS 네트웍 내에서의 트래픽 엔지니어링에 대해 기술한다. 그리고 MPLS 도메인 양 끝단에서 단일 경로의 패킷에 대한 MPLS 헤더의 레이블 번호를 이용한 동일한 패킷인지에 대한 확인 방안과 MPLS 도메인 내에서 Loss Detection 메커니즘을 이용한 효율적인 트래픽 엔지니어링방안을 제안한다. 향후 본 연구 방안을 적용하게 되면, 차등 서비스(Differentiated Services, Diffserv)를 제공하는 네트웍 환경의 핵심 망과 Mobile IP 기반의 무선 네트웍 환경에서 유선 네트웍의 Quality of Service(QoS)를 향상시킬 수 있을 것이다.

Technology Trend of Voice over MPLS on Internet (인터넷망의 Voice over MPLS 기술 동향)

  • Yoon, H.S.;Yang, S.H.;Lee, Y.K.
    • Electronics and Telecommunications Trends
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    • v.16 no.1
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    • pp.18-23
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    • 2001
  • 본 논문에서는 인터넷망에서 MPLS 기술을 이용해서 고품질 음성 서비스를 지원하기 위한 Voice over MPLS 기술의 표준화 동향에 대해 조사 분석하고, 국내 기술 개발시의 고려 사항에 대해 고찰한다. Voice over MPLS 기술에 대한 표준화는 IETF와 MPLS Forum에서 적극적으로 추진하고 있으며, 기술적으로는 Voice directly over MPLS 구조와 VoIP over MPLS의 두 가지 구조가 연구되고 있다.

622M SAR Performance Analysis at ACE2000 MPLS Interface Module (ACE2000 MPLS 정합모듈에서의 622M SAR성능 분석)

  • 최창식;최병철;정연쾌
    • Proceedings of the Korean Information Science Society Conference
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    • pp.322-324
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    • 2001
  • 초고속 국가망에 적용되는 ACE2000 ATM 교환기는 기존의 ATM 서비스외에도 IP 기반의 인터넷트래픽을 처리하기 위해서 MPLS 기능을 탑재하게 된다 이러한 MPLS 기능을 ATM 교환기에 적용하기 위해서 기존의 ATM 정함 모듈과 동일한 토폴로지를 유지하면서 IP 패킷을 저리할 수 있는 MPLS 정합 모듈과 MPLS프로토콜을 포함한 다양한 제어기능을 수행하는 MPI_S 프로세서 모듈을 추가하게 된다. 본 논문에서는 MPLS 정합 모듈의 전제적인 데이터 저리 구조와 하드웨어 기반의 IP 포워딩/머징 엔진의 구성을 살펴보았다. 특히 IP 포워딩/머징 엔진은 하드웨어 기반의 고속 패킷 처리를 위해서 622Mbps ATM SAR칩과 하드웨어 기반 룩업/포워딩 엔진으로 구성되어 있으며. 4개의 IP 포워딩/머징 엔진을 통해서 2.5G 용량의 MPLS 정합 모듈이 구성된다. 각각의 IP 포워딩/머징 엔진은 622M 트래픽을 처리하며 본 논문에서는 포워딩 엔진의 ATM 인터페이스를 담당하는 622M ATM SAR칩을 중심으로 MPLS 정합 모듈의 전체적인 패킷 처리 구조와 메모리 구조 및 성능을 분석하였다.

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MPLS Traffic Engineering of standard skill (MPLS Traffic Engineering의 표준 기술)

  • Kim, Kang;Jeon, Jong-Sik;Kim, Ha-Sik
    • Journal of the Korea Society of Computer and Information
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    • v.6 no.4
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    • pp.68-73
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    • 2001
  • MPLS(Multi protocol Label Switching) is standard skill for added to speed and control the Network Traffic. MPLS concerned the routing protocol to relative Pack line, Each Pack composed label and node, saved the time to seek the address of node. MPLS worked IP, ATM and Network protocol of flame rely. MPLS is Network OSI suport model, 2Layer send to most of Packinsted of 3Layer Switching. MPLS is added speed Traffic of QoS and effective controled the Network.

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Design and Implementation for Construction Method of Management Network in MPLS-TP Network (MPLS-TP 망에서 관리 망 구축 방안에 대한 설계 및 구현)

  • Moon, Sungnam;Kang, Namhi
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.15 no.3
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    • pp.59-65
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    • 2015
  • To build a flexible network than traditional transport network, the carrier ethernet technology is emerging in network industry recently and MPLS-TP technologies are being applied as a major standard technology for the carrier ethernet. However, network management technologies required to handle equipment installed in MPLS-TP network are not clear. This paper propose an efficient method to build a management network automatically without any additional configuration when network equipments are installed in MPLS-TP network. The proposed scheme reduce cost required for both equipment installation and network maintenance by minimizing configuration procedures of connecting management system with network. We evaluated the effectiveness of the proposed scheme by applying the scheme to a real MPLS-TP equipment.

MPLS Internet Traffic Engineering in IP Network (MPLS 인터넷 트래픽 엔지니어링 기술)

  • Jang Hee-Seon;Shi Hyun-Cheul
    • The Journal of Information Technology
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    • v.5 no.4
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    • pp.155-164
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    • 2002
  • MPLS is a integrated technology by using routing function and label swapping in the network layer. Based on the previous forwarding equivalence classes, it adds the fixed length label in ingress of the MPLS domain. For the routing, without the packet header information, it uses label for the forwarding decisions. In this paper, traffic engineering requirements in the MPLS internet will be setup. The traffic engineering function have to be performed previously with the network topology. In addition to, we presents the IP network topology and main function with MPLS signaling protocol.

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Improved MPLS-MOB Scheme for Supporting Local and Global Mobility in NGN (차세대네트워크에서 로컬 및 글로벌 이동성 제공을 위한 향상된 MPLS-MOB 방안)

  • Yu, Myoung-Ju;Choi, Seong-Gon
    • The Journal of the Korea Contents Association
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    • v.11 no.9
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    • pp.54-62
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    • 2011
  • This paper proposes both global and local mobility management (MM) scheme improved from Multi Protocol Label Switching (MPLS)-based Mobility Management scheme (MPLS-MOB) for seamless service in Next Generation Network (NGN). The proposed scheme adds local MM on the existing MPLS-MOB which supports global MM by processing handover signaling by 2.5 layer switching via Label Switch Path (LSP) of MPLS. We numerically analyze and verify that the proposed scheme has lower handover latency time than the existing ones, such as micro-MM methods using MPLS as well as MIP and an interworking scenario between PMIP and MIP.

On Implementing and Deploying Label Distribution Protocol in MultiProtocal Label Switching Systems (MPLS시스템에서 LDP 기능 구현 및 활용 방안)

  • 김미희;이종협;이유경
    • Journal of KIISE:Information Networking
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    • v.30 no.2
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    • pp.270-281
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    • 2003
  • ETF made the RFCs of MPLS technologies for providing the QoS of ATM or Frame Relay and the flexibility&scalability of IP on the Internet services. IETF has been expanding MPLS technologies as a common control component for supporting the various switching technologies called GMPLS. Also, IETF has standardized the signaling protocols based on such technologies, such as LDP, CR-LDP and RSVP-TE. ETRI developed the MPLS system based on ATM switch in order to provide more reliable services, differentiated services and value-added services like the VPN and traffic engineering service on the Korea Public Sector network. We are planning on deploying model services and commercial services on that network. This paper explains the basic functions of LDP, design and development of LDP on our system, and compares with LDP development and operation on other MPLS systems made by Cisco, Juniper, Nortel and Riverstone. In conclusion, this paper deduces the future services and applications by LDP through these explanation and comparison.