IP and ATM - a position paper

This paper gives a technical overview of different networking technologies, such as the Internet, ATM. It describes different approaches of how to run IP on top of an ATM network, and assesses their potential to be used as an integrated services network

IP and ATM - current evolution for integrated services

Current and future applications make use of different technologies as voice, data, and video. Consequently network technologies need to support them. For many years, the ATM based Broadband-ISDN has generally been regarded as the ultimate networking technology, which can integrate voice, data, and video services. With the recent tremendous growth of the Internet and the reluctant deployment of public ATM networks, the future development of ATM seems to be less clear than it used to be. In the past IP provided (and was though to provide) only best effort services, thus, despite its world wide diffution, was not considered as a network solution for multimedia application. Currently many of the IETF working groups work on areas related to integrated services, and IP is also proposing itself as networking technology for supporting voice, data, and video services. This paper give a technical overview on the competing integrated services network solutions, such as IP, ATM and the different available and emerging technologies on how to run IP over ATM, and tries to identify their potential and shortcomings

Optical IP switching a solution to dynamic lightpath establishment in disaggregated network architectures

The landscape of the telecommunications environment is constantly evolving; in terms of architecture and increasing data-rate. Ensuring that routing decisions are taken at the lowest possible layer offers the possibility of greatest data throughput. We propose using wavelengths in a DWDM scheme as dedicated channels that bypass the routing lookup in a router. The future trend of telecommunications industry is, however, toward larger numbers of interlinked competing operator networks. This in turn means there is a lack of a unified control plane to allow current networks to dynamically provision optical paths. This paper will report on the concept of optical IP switching. This concept seeks to address optical control plane issues in disaggregated networks while providing a means to dynamically provision optical paths to cater for large data flows

Quality Of Service Analysis On Mpls Vpn Networks

Tez (Yüksek Lisans) -- İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, 2005Thesis (M.Sc.) -- İstanbul Technical University, Institute of Science and Technology, 2005Günümüzde uygulamaları İnternet servis sağlayıcılarının yüksek performanslı omurgalar tasarlamasını gerektirmektedir. Bu amaçla kullanılan ATM şebekelerinin ortaya çıkardığı ölçeklenebilirlik problemi, sanal devre üzerinde kaynak rezervasyonu nedeniyle kaynakların verimsiz kullanımı ve IP paketlerinin omurga girişinde hücrelere dönüşümünün yarattığı performans kaybı nedeniyle MPLS’e doğru bir yönelim gözlenmektedir. MPLS’in IP yönlendirme mimarisindeki ihtiyaçları karşılaması, yönlendiricilerin yüksek performans/hız sağlaması, ölçeklenebilirlik problemini aşması, getirdiği etiket yığını yapısıyla VPN teknolojisini desteklemesi, IP QoS özelliklerini MPLS omurgası üzerinden taşımayı sağlaması ve ortaya koyduğu yeni yönlendirme özellikleri ile etiket anahtarlama büyük kurumlar ile servis sağlayıcı omurgalarında giderek yaygınlaşmaktadır. Tez kapsamında MPLS teknolojisinin bahsedilen temel özellikleri, etiket anahtarlama temel kavramları, MPLS mimarisi, VPN desteği ve QoS uygulamaları detaylı bir incelemeye tabi tutulmakta ve gerçek bir ağ platformunda MPLS omurgası kurularak, bu omurga üzerinde VPN ve DiffServ ile servis kalitesi uygulamalarına yer verilerek, MPLS VPN üzerinden IP QoS mekanizmalarının devamlılığı ve bu uygulamaların paket iletimi üzerindeki etkileri analiz edilmektedir.Increasing number of Internet users, growing amount of WAN connections and demand on multimedia applications, obligated the Service Providers to design and supply high performance backbone networks. Since ATM networks brings some disadvantages such as scalability issues, inefficient use of resources because of resource reservation method and the necessity to convert IP packets into cells, along with its advantages, migration to MPLS technology became wide-spread. MPLS technology is said to be considerable because of new approaches and advantages that it bring. Since it fulfils the requirements on IP routing architectures and perfomance, removes the complexity and problems such as scalability that ATM has, and supports label stacking for VPN needs, label switching begin to be standardized on enterprise and ISP backbones. In this thesis, specialities of MPLS architecture, VPN support and QoS approach investigated in detail, and on the last section they have proven on a real MPLS backbone design. Using MPLS/VPN and DiffServ applications on emulation network, it is showed how IP QoS definitions can be transferred over MPLS backbone using VPN tunnels, and the effect on packet transmission is defined.Yüksek LisansM.Sc

Prospects for Internet technology

This paper surveys the current developments in Internet technology, with a particular emphasis on performance, and the growing need for various guarantees of quality of service. It discusses hardware technologies for increased bandwidth, mechanisms for requesting and providing specific qualities of service, and various scaling issues. Fi-nally it discusses mechanisms needed for (but not the economics of) the Internet in the mass market. To this end, we survey changes in the areas of addressing, and flow management. 1

Transition of Campus Network to IP Next Generation

This work was conducted to define the necessity and feasibility of transition of the campus network for Oklahoma State University to IP Next Generation. IP Next Generation, or IPng, is a new protocol designed as a successor to the current version of IPv4 used in networking. Due to problems with addressing space and routing tables, IPv4 is in need of replacement. IPng comes as a solution to the problems related to IPv4. Increased addressing space from 32 to 128 bits ensures adequate space for growth of the Internet, improved design provides a potential for better performance of routers working with the Internet Protocol. It was concluded that the tunneling procedure does not impose much overhead in transition from IPv4 to IPv6. A plan of introducing IPv6 on the OSU campus was presented

Avaliação das propostas de integração IP sobre ATM

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Ciência da Computação.ATM (Asynchronous Transfer Mode) é uma das tecnologias de rede de alta velocidade mais adotada nos dias atuais, sendo que um dos principais diferenciais desta tecnologia é o provimento de Qualidade de Serviço. Atualmente, a tecnologia ATM deve conviver com o protocolo IP, devido principalmente ao grande volume de aplicações. Existem algumas alternativas em termos de integração do IP com ATM, por exemplo IPOA (Internet Protocol Over ATM), LANE (Lan Emulation), MPOA (MultProtocol Over ATM) e MPLS (MultProtocol Label Switch). Este trabalho apresenta estas propostas de integração IP sobre ATM, fazendo também uma análise comparativa. Outra contribuição deste trabalho é a definição de linhas guias para a seleção de uma destas opções de integração de IP sobre ATM durante o projeto de uma rede

IP and ATM integration: A New paradigm in multi-service internetworking

ATM is a widespread technology adopted by many to support advanced data communication, in particular efficient Internet services provision. The expected challenges of multimedia communication together with the increasing massive utilization of IP-based applications urgently require redesign of networking solutions in terms of both new functionalities and enhanced performance. However, the networking context is affected by so many changes, and to some extent chaotic growth, that any approach based on a structured and complex top-down architecture is unlikely to be applicable. Instead, an approach based on finding out the best match between realistic service requirements and the pragmatic, intelligent use of technical opportunities made available by the product market seems more appropriate. By following this approach, innovations and improvements can be introduced at different times, not necessarily complying with each other according to a coherent overall design. With the aim of pursuing feasible innovations in the different networking aspects, we look at both IP and ATM internetworking in order to investigating a few of the most crucial topics/ issues related to the IP and ATM integration perspective. This research would also address various means of internetworking the Internet Protocol (IP) and Asynchronous Transfer Mode (ATM) with an objective of identifying the best possible means of delivering Quality of Service (QoS) requirements for multi-service applications, exploiting the meritorious features that IP and ATM have to offer. Although IP and ATM often have been viewed as competitors, their complementary strengths and limitations from a natural alliance that combines the best aspects of both the technologies. For instance, one limitation of ATM networks has been the relatively large gap between the speed of the network paths and the control operations needed to configure those data paths to meet changing user needs. IP\u27s greatest strength, on the other hand, is the inherent flexibility and its capacity to adapt rapidly to changing conditions. These complementary strengths and limitations make it natural to combine IP with ATM to obtain the best that each has to offer. Over time many models and architectures have evolved for IP/ATM internetworking and they have impacted the fundamental thinking in internetworking IP and ATM. These technologies, architectures, models and implementations will be reviewed in greater detail in addressing possible issues in integrating these architectures s in a multi-service, enterprise network. The objective being to make recommendations as to the best means of interworking the two in exploiting the salient features of one another to provide a faster, reliable, scalable, robust, QoS aware network in the most economical manner. How IP will be carried over ATM when a commercial worldwide ATM network is deployed is not addressed and the details of such a network still remain in a state of flux to specify anything concrete. Our research findings culminated with a strong recommendation that the best model to adopt, in light of the impending integrated service requirements of future multi-service environments, is an ATM core with IP at the edges to realize the best of both technologies in delivering QoS guarantees in a seamless manner to any node in the enterprise