The purpose of the Walkstation II project is to create a testbed for a wireless communication system with access to the Internet. The Mobile INTernet (MINT) router is a core element of this project. Most of the routers and many other nodes of today's Internet support network management. This includes the remote control of various parameters which caracterize the status of physical interfaces, protocols and many other objects. The Simple Network Management Protocol (SNMP) which was used in the current work is a standard protocol of the TCP/IP suite. All the managed nodes of the Internet have a common set of management capabilities. Their implementation is available in software development packages. The management of mobile stations requires a new set of management capabilities. They will allow for the control of mobility support and the radio links. The current work consists in adapting the set of standard SNMP capabilities to the MINT router and of the creation of a set of new capabilities specific to the MINT. / <p>I do not know the number of university credits, but entered it as 30 ECTS. This was an exchange student and I do not know if they were actually registered at KTH.</p>

Networked systems, such as cloud infrastructures, are growing in size and complexity.They hold and generate a vast amount of configuration and operational data, whichis maintained in various locations and formats, and changes at various time scales.A wide range of protocols and technologies is used to access this data for networkmanagement tasks. A concept called ‘network search’ is introduced to make all thisdata available in real-time through a search platform with a uniform interface, whichenables location-independent access through search queries. Network search requires a network of search nodes, where the nodes have identicalcapabilities and work cooperatively to process search queries in a peer-to-peer fashion.A search node should indicate good performance results in terms of low query responsetimes, high throughputs, and low overhead costs and should scale to large networkedsystems with at least hundred thousands nodes. This thesis contributes in several aspects towards the design and implementation of anetwork search node. We designed a search node that includes three major components,namely, a real-time data sensing component, a real-time database, and a distributedquery-processing component. The design takes indexing of search terms and concurrencyof query processing into consideration, which accounts for fast response timesand high throughput of search queries. We implemented a network search node as asoftware package that runs on a server that provides a cloud service, and we evaluatedits performance on a cloud testbed of nine servers. The performance measurementssuggest that a network search system based on our design can process queries at lowquery latencies for a high query load, while maintaining a low overhead of computationalresources.

Hantering av nätverk är en utmaning för dagens företag.Nätverkshanteringssystem är ofta komplexa och felbenägna, vilket gör demtröttsamma och svåra att arbeta med för nätverksansvariga. Tidigare forskningvisar att dessa system oftast inte är särskilt användbara, med den förmodadeanledningen att mer fokus läggs på funktionalitet än användbarhet då säkerhetär en så viktig del av nätverkshantering. Dock kommer ett system som inte byggsefter användbarhets- och user experience-kriterier att generera fel även omfunktionaliteten är korrekt byggd. Tidigare forskning visar också att det finns enavsaknad av effektiva användbarhetstester specifikt för nätverkshantering.I den här studien skapas ett set heuristiker (riktlinjer för användbarhet),skräddarsytt för nätverkshantering. Dessa heuristiker kan sedan användas ianvändbarhetstester för nätverkshanteringssystem. Studien är genomförd isamarbete med Axis Communications AB. Deras nätverkshanteringssystem”Music” används som en hjälp för att hitta och validera lämpliga heuristiker, ochheuristikerna används också för att testa Musics användbarhet. En systematisklitteraturstudie och användarintervjuer på Axis används för att upptäcka viktigaaspekter inom nätverkshantering. Setet med heuristiker skapas sedan genomatt sätta upp ett start-set med klassiska heuristiker och modifiera dessa utifrånde tidigare upptäckta viktiga aspekterna. Heuristikerna valideras sedan genomatt använda dem i användbarhetstester av Music. Valideringen visar att de nyaheuristikerna är mer effektiva vad gäller att hitta problem i ettnätverkshanteringssystem än ett klassiskt set av användbarhets-heuristiker(Nielsens heuristiker). Utöver setet med heuristiker resulterar studien också irekommendationer på förbättringar av Musics användbarhet, mock-ups med ettnytt designförslag för Musics GUI och generella rekommendationer för företagmed nätverkshanteringssystem. / Network management is a challenge for today’s enterprises. Networkmanagement systems are usually complex and error prone, making themtedious and difficult to work with for network managers. Related work show thatthese systems are often not very usable, the reason probably being that morefocus is put on functionality rather than usability since security is a veryimportant aspect of network management. However, a system not builtaccording to usability and user experience guidelines will generate errors eventhough the functionality is correctly built. Related work also show that there isa lack of efficient usability testing methods specifically for network management.In this study, a set of heuristics (usability guidelines), tailor-made for networkmanagement, is being created. These heuristics can then be used in usabilitytesting of network management systems. The study is conducted incollaboration with Axis Communications AB. Their network management system“Music” is used as a help in finding and validating appropriate heuristics, andthe heuristics are also used for testing the usability of Music. A systematicliterature review and user interviews at Axis are used to learn important aspectsof network management systems. The heuristic set is then created by setting upa starting set of classical heuristics and modifying it according to previouslyfound network management aspects. These heuristics are then validated byusing them in usability tests of Music. The validation proves the new set ofheuristics to be more effective in finding issues for a network managementsystem than a classical set of usability heuristics (namely Nielsen’s heuristics).Besides the set of heuristics, the study also results in recommendations ofimprovements on the usability of Music, mock-ups proposing a new design forMusic’s GUI and general recommendations for enterprises with networkmanagement systems.

Network management systems (NMS) monitor, configure and maintain computer networks. Network operators providing networking services are responding to the evolving bandwidth, availability, and latency requirements by upgrading from legacy management systems to alternatives utilizing modern technologies. This paper addresses the trends and challenges of transitioning from legacy NMS to modern management systems. The academic research on network management systems is limited, and we aim to provide a knowledge base on the subject matter by conducting a literature review. The literature review consisted of 43 primary studies from which eight themes were identified by conducting thematic analysis. An NMS’s typical upgrade and selection process is largely unsystematic and based on anecdotal requirements. We utilize the discovered trends and challenges as the basis for the network management system selection process. The selection process was developed via the design science research methodology. The proposed selection process combines the business problems perceived by network service providers with state-of-the-art network research. The results of the review and the process development outline practical implications in the subject area of NMS and introduce potential future research areas in the field of network management.

Disaster management and emergency response mechanisms are coming of age post 9/11. Paper based triaging and evacuation is slowly being replaced with much advanced mechanisms using remote clients (Laptops, Thin clients, PDAs), RFiDs etc. This reflects a modern trend to deploy Information Technology (IT) in disaster management. IT elements provide a great a deal of flexibility and seamlessness in the communication of information. The information flowing is so critical that, loss of data is not at all acceptable. Loss of data would mean loss of critical medical information portraying the disaster scenario. This would amount to a wrong picture being painted of the disaster incident. This basic idea led to the motivation of DiNAR (Diagnosis of Network and Application Resource). The aim of DiNAR was to remotely monitor all the components of the deployed system infrastructure (Remote clients, Servers) and if there is a fault in the infrastructure (Hardware, Software or Communication) DiNAR captures the fault alarm and do an event correlation to find the source of the problem. The biggest challenge that lies here is the fact that the entities we are trying to monitor are scattered around in the Internet. Traditional network management techniques always assume that the network is within administrative control and every device we monitor is easily reachable on demand. But the ad-hoc scenario of deployment of disaster management systems makes this task non trivial. DiNAR has been designed with an aim to work with any application which has its infrastructure elements scattered in the Internet space. DIORAMA (A real time disaster management system) represents a new series of applications (especially in medical field) where the deployment of network infrastructure is scattered around with Internet being the backbone connector. Another such example is the Intel® Health Guide PHS6000 [1], which is used in patient monitoring in homes. This thesis work uses DIORAMA as a case study application used to prove the concept of DiNAR.

This thesis describes an architecture for policy-based quality of service (QoS) for fixed broadband wireless systems. An implementation of the proposed architecture for the Local Multipoint Distribution Service (LMDS) wireless network in Blacksburg, Virginia is described in detail. The focus of the research work was to enable simpler management of the LMDS system and to design and enable network QoS. The thesis examines various means to provide QoS in the network. It highlights issues related to enabling QoS in the VT-LMDS network, like prioritized access, resource management, service differentiation, and lack of predictability in network performance. Quality of service assumes a definition based on the context and application of interest. This research focuses on enabling service differentiation and intelligent resource management based on network conditions and link utilization. A software application that serves as a model of the described architecture was developed using the C++ programming language. The tool uses the Simple Network Management Protocol (SNMP) for the network management operations. The design, implementation issues and the advantages and shortcomings of the tool are outlined and a short primer on the use of the tool is provided. Finally, possibilities for future work in this area especially towards enabling the tool to work with other vendor-specific LMDS systems and non-LMDS fixed broadband wireless systems are examined and the issues in implementing one such system are described. / Master of Science

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Key Account Management har blivit uppmärksammat i tidigare forskning i många aspekter, men däremot har det lagts mindre fokus på betydelsen av nätverk inom företagssamarbeten.Med bakgrund till detta har denna uppsats ett teoretiskt fokus på hur svenska banker hanterarsina nyckelkunder och vilken betydelse dessa har för det fokala företaget. För att besvaraforskningsfrågan har uppsatsen utgått från en jämförande analys mellan två svenska bankersom arbetar med B2B samarbeten. Med hjälp av kvalitativa djupintervjuer med anställda frånvardera företag har likheter och skillnader kunnat sammanställas. Utifrån detta har slutsatserdragits av att båda bankerna delar många liknande värderingar och tankesätt vad det gäller attbehålla samarbeten. Även fast bankerna har liknande strategier utifrån många synvinklar,skiljer det sig i hur de skapar nya relationella partnerskap. Avslutningsvis är synen på nätverkoch företagets identitet relativt olika mellan de två olika bankerna som studerats.

This study investigates two network management tools that are used by Tele2 for managing customers' networks that include access points on the access layer. The problem formulation includes (i) functionalities that these tools can provide, (ii) the amount of functionalities that both tools can provide, (iii) how security can improve productivity for one of these tools, and (iv) how the tools compare in terms of performance. Utilizing a mixed-methods approach, a literature overview on Cisco documents was conducted to find answers about functions and the effects of these functions on tools' productivity. An experiment was conducted to analyze the speed of configuration change performance of both tools. The literature overview helps to make a good analysis of what functionalities these tools can provide and how security can affect the enhancement of productivity in network management tools.