Architecture, design, and modeling of the OPSnet asynchronous optical packet switching node

An all-optical packet-switched network supporting multiple services represents a long-term goal for network operators and service providers alike. The EPSRC-funded OPSnet project partnership addresses this issue from device through to network architecture perspectives with the key objective of the design, development, and demonstration of a fully operational asynchronous optical packet switch (OPS) suitable for 100 Gb/s dense-wavelength-division multiplexing (DWDM) operation. The OPS is built around a novel buffer and control architecture that has been shown to be highly flexible and to offer the promise of fair and consistent packet delivery at high load conditions with full support for quality of service (QoS) based on differentiated services over generalized multiprotocol label switching

ANALISA QUALITY OF SERVICE (QoS) JARINGAN MULTIPROTOCOL LABEL SWITCHING (MPLS) SEBAGAI PENERAPAN TEKNOLOGI INTERNET PROTOCOL (IP)

ABSTRAKSI: Multiprotocol Label Switching (MPLS) merupakan metode dengan unjuk kerja tinggi untuk proses forwarding data (frame) di sebuah jaringan. Konsep dari MPLS ini menggunakan switching node yang biasa disebut Label Switching Router (LSR). MPLS ini bekerja dengan melekatkan suatu label pada setiap paket yang datang dan menggunakan label tersebut untuk menentukan ke arah mana seharusnya paket data tersebut dikirimkan. Teknologi MPLS ini bertujuan membawa teknologi Internet Protocol (IP) yang memiliki sistem connection-less ke dalam sebuah teknologi IP yang memiliki sistem connection-oriented. Karena pada jaringan IP tidak terdapat mekanisme pemeliharaan Quality of Service (QoS). Maka teknologi MPLS diperkenalkan sebagai teknologi rekayasa trafik untuk jaringan IP, yang memberikan perangkat pengelolaan bandwidth dan optimasi performansi.Pada tugas akhir ini akan dibahas bagaimana sebenarnya teknik Multiprotocol Label Switching (MPLS) yang menerapkan teknologi IP untuk mendapatkan QoS yang baik bagi setiap layanan paket yang dikirimkan. Juga akan ditampilkan simulasi penghitungan parameter QoS dalam jaringan MPLS, sehingga perkiraan dan perlakuan terhadap paket yang dikirimkan dapat dianalisa.Kata Kunci : Multiprotocol Label Switching, Label Switching Router, Internet Protocol, Quality of ServiceABSTRACT: Multiprotocol Label Switching (MPLS) is a high-performance method for forwarding packets (frames) through a network.. The concept of MPLS use switching node called Label Switching Router (LSR). MPLS do such operation by labeling every incoming packet and then use that label to decide which way that packet should be delivered. MPLS technology have a purpose to combine Internet Protocol (IP) technology which has connection-less system into IP technology which has connection-oriented system. Since there is no mechanism of keeping the Quality of Service (QoS) in the IP technology. So MPLS technology is introduced as traffic engineering for IP network, that giving a set off bandwidth management and optimizing the performance.This final project will explain how the Multiprotocol Label Switching (MPLS) technology is actualy applicate IP technology to get a good QoS for every delivered packet. There is also a simulation to calculate QoS parameter in MPLS networking, so all treatment for every delivered packet can be analyzed.Keyword: Multiprotocol Label Switching, Label Switching Router, Internet Protocol, Quality of Servic

Understanding edge-connectivity in the Internet through core-decomposition

Internet is a complex network composed by several networks: the Autonomous Systems, each one designed to transport information efficiently. Routing protocols aim to find paths between nodes whenever it is possible (i.e., the network is not partitioned), or to find paths verifying specific constraints (e.g., a certain QoS is required). As connectivity is a measure related to both of them (partitions and selected paths) this work provides a formal lower bound to it based on core-decomposition, under certain conditions, and low complexity algorithms to find it. We apply them to analyze maps obtained from the prominent Internet mapping projects, using the LaNet-vi open-source software for its visualization

Application of Multiprotocol Medical Imaging Communications and an Extended DICOM WADO Service in a Teleradiology Architecture

Multiprotocol medical imaging communication through the Internet is more flexible than the tight DICOM transfers. This paper introduces a modular multiprotocol teleradiology architecture that integrates DICOM and common Internet services (based on web, FTP, and E-mail) into a unique operational domain. The extended WADO service (a web extension of DICOM) and the other proposed services allow access to all levels of the DICOM information hierarchy as opposed to solely Object level. A lightweight client site is considered adequate, because the server site of the architecture provides clients with service interfaces through the web as well as invulnerable space for temporary storage, called as User Domains, so that users fulfill their applications' tasks. The proposed teleradiology architecture is pilot implemented using mainly Java-based technologies and is evaluated by engineers in collaboration with doctors. The new architecture ensures flexibility in access, user mobility, and enhanced data security

Multicast Mobility in Mobile IP Version 6 (MIPv6) : Problem Statement and Brief Survey

Publisher PD

Benchmarking and viability assessment of optical packet switching for metro networks

Optical packet switching (OPS) has been proposed as a strong candidate for future metro networks. This paper assesses the viability of an OPS-based ring architecture as proposed within the research project DAVID (Data And Voice Integration on DWDM), funded by the European Commission through the Information Society Technologies (IST) framework. Its feasibility is discussed from a physical-layer point of view, and its limitations in size are explored. Through dimensioning studies, we show that the proposed OPS architecture is competitive with respect to alternative metropolitan area network (MAN) approaches, including synchronous digital hierarchy, resilient packet rings (RPR), and star-based Ethernet. Finally, the proposed OPS architectures are discussed from a logical performance point of view, and a high-quality scheduling algorithm to control the packet-switching operations in the rings is explained