{"title":"Identification of Peer-to-Peer Applications' Flow Patterns","authors":"Andre Couto, A. Nogueira, P. Salvador, R. Valadas","doi":"10.1109/NGI.2008.46","DOIUrl":"https://doi.org/10.1109/NGI.2008.46","url":null,"abstract":"Peer-to-peer file-sharing systems have gained tremendous popularity in the past few years. More users are continually joining such systems and more objects are being made available, seducing even more users to join. Today, the traffic generated by P2P systems accounts for a major fraction of the Internet traffic and is bound to increase. An accurate mapping of traffic to their applications can be very important for a broad range of network management and measurement tasks including traffic engineering, service differentiation, performance/failure monitoring, and security. Traditional mapping approaches have become increasingly inaccurate because many applications use non-default or ephemeral port numbers, use well-known port numbers associated with other applications, change application signatures or use traffic encryption. This paper presents a new approach, based on neural networks, that is able to identify flow patterns generated by P2P Internet applications while overcoming the limitations of existing approaches. The results obtained show that, when conveniently trained, neural networks constitute a valuable tool to identify P2P Internet applications since they are able to achieve good performance results while, at the same time, avoid the most important disadvantages presented by the other identification methods.","PeriodicalId":182496,"journal":{"name":"2008 Next Generation Internet Networks","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131879324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Minimizing Installation Costs of Survivable DWDM-Mesh Networks: A Heuristic Approach","authors":"M. Duelli, Christopher Pluntke, Michael Menth","doi":"10.1109/NGI.2008.9","DOIUrl":"https://doi.org/10.1109/NGI.2008.9","url":null,"abstract":"The cost function for the capacity of optical links follows a step function. That means, the support of one more lightpath might require a costly upgrade of an optical cross connect (OXC), but then additional lightpaths can be supported at almost no further cost. This should be considered when lightpaths are routed through an optical network. In this paper we optimize the routing of the lightpaths to minimize the costs for the required optical equipment. We consider this problem for the failure-free case only and for survivable networks using dedicated path protection. We formulate the problems by integer linear programs (ILPs). In addition, we propose heuristics to solve the problem since solving ILPs is computationally expensive and not feasible for large problem instances. We show that our heuristics lead to good results within a fraction of time compared to ILP solvers.","PeriodicalId":182496,"journal":{"name":"2008 Next Generation Internet Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130997118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Smooth Multicast Congestion Control for Adaptive Multimedia Transmission","authors":"C. Bouras, A. Gkamas, Georgios Kioumourtzis","doi":"10.1109/NGI.2008.26","DOIUrl":"https://doi.org/10.1109/NGI.2008.26","url":null,"abstract":"In this paper we introduce an equation-based smooth multicast congestion control for adaptive multimedia transmission over best-effort wired networks. Target of the proposed schema is (a) smooth transmission rate, in order to minimize the audio-video (AV) encoding and decoding distortion and (b) TCP friendly transmission. The \"smoothness\" lays in the way the TCP-friendly transmission rate is filtered. We integrate the congestion control functions in the RTP protocol and use the RTCP sender and receiver reports to provide the necessary feedback information for the sender's adaptive transmission rate. The performance evaluation of the smooth adaptation and TCP-friendliness is conducted through a number of simulations with the network simulator software (ns2). Our intention is to use this congestion control in the context of a proposed framework for multimedia transmission over wired and wireless networks.","PeriodicalId":182496,"journal":{"name":"2008 Next Generation Internet Networks","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115604857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andr é Zimmermann, J. Silva, J. Sobral, F. Boavida
{"title":"6GLAD: IPv6 Global to Link-layer ADdress Translation for 6LoWPAN Overhead Reducing","authors":"Andr é Zimmermann, J. Silva, J. Sobral, F. Boavida","doi":"10.1109/NGI.2008.35","DOIUrl":"https://doi.org/10.1109/NGI.2008.35","url":null,"abstract":"The next generation of wireless sensor networks will integrate communication systems beyond the third generation paradigm. As a result of this integration, the new communication systems will be fed by the sensor networks with information gathered from the environment, achieving context awareness. To reach the necessary end-to-end connectivity between all-IP networks and sensor networks, the IETF 6LoWPAN working group has designed an IPv6 adaptation layer for low power devices. This protocol stack provides IPv6 interoperability to the sensor networks, thus avoiding as much overhead as possible. This paper analyses and evaluates the associated IP communication overhead in each possible 6LoWPAN scenario, from intra to inter network communication. We conclude that, even the 6LoWPAN offering a light weight IP solution for link local sensor network communication, it has a relatively high overhead when data flows between different networks. In order to avoid the communication overhead when global IPv6 addressing is necessary we propose a new solution based on a 6LoWPAN global-to-link-layer address translation.","PeriodicalId":182496,"journal":{"name":"2008 Next Generation Internet Networks","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125078173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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