Peningkatan Konektifitas Service VPLS Redundant Path Dengan Rapid Spanning Tree Protocol

Virtual Private LAN Service is already very popular among the enterprise industry which is a point to point network or multipoint to multipoint l2VPN service, VPLS provides transparent bridge between customers connected to geographically dispersed locations delivered via MPLS backbone by utilizing features such as MPLS Fast reroute and traffic engineering. Redundant paths can be applied to the VPLS service on the access side and backbone to maintain link performance that aims to minimize down time during network fails on the VPLS service. In this research, the implementation of redundant path using RSTP to prevent forwarding loop switching network in VPLS service to protect end-to-end data traffic with VPLS mesh-pseudowire and spoke-pesudowire with RSTP is the most optimal result compared to STP and build reliable network System with high performance for use in modern industry

Peningkatan Konektifitas Service VPLS Redundant Path dengan Rapid Spanning Tree Protocol

Virtual Private LAN Service is already very popular among the enterprise industry which is a point to point network or multipoint to multipoint l2VPN service, VPLS provides transparent bridge between customers connected to geographically dispersed locations delivered via MPLS backbone by utilizing features such as MPLS Fast reroute and traffic engineering. Redundant paths can be applied to the VPLS service on the access side and backbone to maintain link performance that aims to minimize down time during network fails on the VPLS service. In this research, the implementation of redundant path using RSTP to prevent forwarding loop switching network in VPLS service to protect end-to-end data traffic with VPLS mesh-pseudowire and spoke-pesudowire with RSTP is the most optimal result compared to STP and build reliable network System with high performance for use in modern industry

A study into scalable transport networks for IoT deployment

The growth of the internet towards the Internet of Things (IoT) has impacted the way we live. Intelligent (smart) devices which can act autonomously has resulted in new applications for example industrial automation, smart healthcare systems, autonomous transportation to name just a few. These applications have dramatically improved the way we live as citizens. While the internet is continuing to grow at an unprecedented rate, this has also been coupled with the growing demands for new services e.g. machine-to machine (M2M) communications, smart metering etc. Transmission Control Protocol/Internet Protocol (TCP/IP) architecture was developed decades ago and was not prepared nor designed to meet these exponential demands. This has led to the complexity of the internet coupled with its inflexible and a rigid state. The challenges of reliability, scalability, interoperability, inflexibility and vendor lock-in amongst the many challenges still remain a concern over the existing (traditional) networks. In this study, an evolutionary approach into implementing a "Scalable IoT Data Transmission Network" (S-IoT-N) is proposed while leveraging on existing transport networks. Most Importantly, the proposed evolutionary approach attempts to address the above challenges by using open (existing) standards and by leveraging on the (traditional/existing) transport networks. The Proof-of-Concept (PoC) of the proposed S-IoT-N is attempted on a physical network testbed and is demonstrated along with basic network connectivity services over it. Finally, the results are validated by an experimental performance evaluation of the PoC physical network testbed along with the recommendations for improvement and future work

Creating a Worldwide Network For the Global Environment for Network Innovations (GENI) and Related Experimental Environments

Many important societal activities are global in scope, and as these activities continually expand world-wide, they are increasingly based on a foundation of advanced communication services and underlying innovative network architecture, technology, and core infrastructure. To continue progress in these areas, research activities cannot be limited to campus labs and small local testbeds or even to national testbeds. Researchers must be able to explore concepts at scale—to conduct experiments on world-wide testbeds that approximate the attributes of the real world. Today, it is possible to take advantage of several macro information technology trends, especially virtualization and capabilities for programming technology resources at a highly granulated level, to design, implement and operate network research environments at a global scale. GENI is developing such an environment, as are research communities in a number of other countries. Recently, these communities have not only been investigating techniques for federating these research environments across multiple domains, but they have also been demonstration prototypes of such federations. This chapter provides an overview of key topics and experimental activities related to GENI international networking and to related projects throughout the world

Solution strategies of service fulfilment Operation Support Systems for Next Generation Networks

Suomalainen operatiivisten tukijärjestelmien toimittaja tarjoaa ratkaisuja palvelujen aktivointiin, verkkoresurssien hallintaan ja laskutustietojen keruuseen. Nämä ratkaisut ovat pääosin käytössä langattomissa verkoissa. Tässä tutkimuksessa arvioidaan kyseisten ratkaisujen soveltuvuutta palvelutoimitusprosessien automatisointiin tulevaisuuden verkkoympäristöissä. Tarkastelun kohteena ovat runko- ja pääsyverkkojen kiinteät teknologiat, joiden suosio saavuttaa huippunsa seuraavan 5-10 vuoden aikana. Näissä verkoissa palvelujen, kuten yritys-VPN:n tai kuluttajan laajakaistan, aktivointi vaatii monimutkaisen toimitusprosessin, jonka tueksi tarvitaan ensiluokkaista tukijärjestelmää. Teknologiakatsauksen jälkeen tutkimuksessa verrataan viitteellistä tuoteportfoliota saatavilla oleviin operatiivisten tukijärjestelmien arkkitehtuurisiin viitekehyksiin, ja analysoidaan sen soveltuvuus tulevaisuuden verkkoympäristöjen palvelutoimitusprosessin automatisointiin. Myös palvelutoimitusprosessien automatisointiin soveltuvien tukijärjestelmien markkinatilanne arvioidaan, ja tämän perusteella tutkitaan optimaalisinta sovellusstrategiaa. Lopulta voidaan päätellä, että tuoteportfoliolle parhaiten soveltuvin sovellusalue on kuluttajan laajakaistan, ja siihen liittyvien kehittyneempien IP-palveluiden palvelutoimitusprosessien automatisointi.A Finnish Operation Support Systems (OSS) vendor provides solutions for service activation, network inventory and event mediation. These solutions have mostly been deployed in mobile environments. In this thesis it will be studied how feasible it is to use similar solutions for service fulfilment in Next Generation Networks (NGN). NGN is a broad term that describes some key architectural evolutions in telecommunication core and access networks that will be deployed over the next 5 to 10 years. In these networks service, e.g. Triple Play or Virtual Private Network (VPN), activations require an extensive service fulfilment process that must be supported by first-class OSS. After introducing the NGN technologies, the research compares a reference product portfolio to available service fulfilment frameworks and evaluates the applicability. The study analyses the current state of service fulfilment OSS markets and evaluates various solution strategies. Eventually it will be concluded that the most interesting and adequate solution scenario is residential broadband, including value-added IP services

Hybrid IP/SDN networking: open implementation and experiment management tools

The introduction of SDN in large-scale IP provider networks is still an open issue and different solutions have been suggested so far. In this paper we propose a hybrid approach that allows the coexistence of traditional IP routing with SDN based forwarding within the same provider domain. The solution is called OSHI - Open Source Hybrid IP/SDN networking as we have fully implemented it combining and extending Open Source software. We discuss the OSHI system architecture and the design and implementation of advanced services like Pseudo Wires and Virtual Switches. In addition, we describe a set of Open Source management tools for the emulation of the proposed solution using either the Mininet emulator or distributed physical testbeds. We refer to this suite of tools as Mantoo (Management tools). Mantoo includes an extensible web-based graphical topology designer, which provides different layered network "views" (e.g. from physical links to service relationships among nodes). The suite can validate an input topology, automatically deploy it over a Mininet emulator or a distributed SDN testbed and allows access to emulated nodes by opening consoles in the web GUI. Mantoo provides also tools to evaluate the performance of the deployed nodes.Comment: Accepted for publication in IEEE Transaction of Network and Service Management - December 2015 http://dx.doi.org/10.1109/TNSM.2015.250762

Implementing Soak Testing for an Access Network Solution

Tietoliikennelaitteiden ohjelmistojen toiminnalle asetetaan erittäin kovat laatuvaatimukset. Operaattoreilla on yleensä asiakkaiden kanssa SLA sopimukset, joiden rikkomisesta operaattorit saattavat joutua maksamaan suuriakin korvauksia. Lisäksi jokainen hetki, jolloin laite ei ole toimintavalmis, tuottaa operaattorille kustannuksia menetettyjen tulojen muodossa. Tämän vuoksi on erittäin tärkeää, että laitteet ovat jatkuvasti toimintakunnossa eikä palvelukatkoksia tule. Tämän diplomityön tavoitteena oli kehittää automatisoitu pitkän ajan testausjärjestelmä IP/MPLS pohjaiselle Tellabs 8600 reititinperheelle. Testattava järjestelmä koostuu useista verkkoelementeistä sekä graafisesta Tellabs 8000 verkonhallintajärjestelmästä. Tämän testausympäristön tavoitteena on paljastaa ongelmia, jotka eivät tule esiin normaalissa toiminnallisessa tai regressiotestauksessa vaan vaativat ilmaantuakseen pidempää ajoaikaa tai useita toistoja. Työssä kehitettiin kehys sille, kuinka testausympäristössä voidaan suorittaa automaattisesti erilaisia operaatioita sekä voidaan ohjelmallisesti havaita mahdollisia ongelmatilanteita. Testausjärjestelmä toteutettiin onnistuneesti ja täyttää sille asetetut tavoitteet. Testausjärjestelmä on otettu käyttöön Tellabsin systeemitestauksessa ja on käyttöönoton jälkeen osoittautunut hyödylliseksi ja tehokkaaksi järjestelmäksi. Systeemitestauksen käyttöön toteutettiin myös toinen täysin identtinen ympäristö.The quality requirements are extremely demanding for telecommunications software. Operators usually have SLA agreements with their customers, and violations to that contract may lead to serious compensations. Furthermore, every moment that equipment or some service is not operating correctly means lost income for the operator. For these reasons, it is extremely important for a telecommunications equipment to continue functioning properly without service affecting breaks. The purpose of this thesis was to design and implement automated soak testing for the IP/MPLS-based Tellabs 8600 router series. The system under test is composed of several network elements and a graphical Tellabs 8000 Network Management System. The purpose of this testing environment is to reveal defects that do not show up immediately in functional or regression testing but may manifest when the system is used for longer periods or operations are executed many times. A framework for automatically operating the test network and detecting problems programmatically was implemented in this thesis. The testing environment was successfully implemented and satisfies the objectives initially set for it. Testing environment has been taken into use in system testing at Tellabs and after deployment has turned out to be useful and effective. Another identical environment was also implemented for the system testing group