TY - CHAP AU - Cinkler, Tibor AU - Coudert, David AU - Flammini, Michele AU - Monaco, Gianpiero AU - Moscardelli, Luca AU - Munoz, Xavier AU - Sau, Ignasi AU - Shalom, Mordechai AU - Zaks, Shmuel ED - Koster, Arie M C A ED - Munoz, Xavier TI - Traffic Grooming. Combinatorial results and practical resolutions TS - Combinatorial results and practical resolutions T2 - Graphs and algorithms in communication networks PB - Springer Netherlands CY - Heidelberg SN - 9783642022494 T3 - Text in Theoretical computer science PB - Springer Netherlands PY - 2010 SP - 63 EP - 94 PG - 32 DO - 10.1007/978-3-642-02250-0_2 UR - https://m2.mtmt.hu/api/publication/23945813 ID - 23945813 LA - English DB - MTMT ER - TY - JOUR AU - Cinkler, Tibor AU - Hegyi, Péter TI - Automated adaptive on-line Multi-Layer Traffic Engineering through "tailoring"' wavelength-paths in the Fragment Graph JF - OPTICAL SWITCHING AND NETWORKING J2 - OPT SWITCH NETW VL - 6 PY - 2009 IS - 3 SP - 194 EP - 214 PG - 21 SN - 1573-4277 DO - 10.1016/j.osn.2009.05.002 UR - https://m2.mtmt.hu/api/publication/2645157 ID - 2645157 N1 - Export Date: 9 January 2024 Correspondence Address: Hegyi, P.; High Speed Networks Laboratory, Magyar tudosok korutja 2, H-1117 Budapest, Hungary; email: hegyi@tmit.bme.hu AB - In Multi-Layer networks, where more than one layer is switched, i.e., connections are set up using not only the upper, e.g., IP layer but the underlying wavelength layer as well leads often to suboptimal performance due to long wavelength paths, that do not allow routing the traffic along the shortest path. The role of MLTE (Multi-Layer Traffic Engineering) is to cut (fragment) these long wavelength-paths into parts (fragments) that allow better routing at the upper layer, or to concatenate (defragment) two or more fragments into longer paths when the network load is low and therefore ^ fewer hops are preferred. In this paperwepresent a new model, the Fragment Graph (FG) and an algorithm for this model that supports Fragmentation and De-Fragmentation of wavelength paths making the network always instantly adapt to changing traffic conditions. We introduce the notion of shadow links to model ``#?#-path tailoring''. We implicitly assume that the wavelength paths carry such, e.g., IP traffic that can be interrupted for a few milliseconds and that even allows minor packet reordering. To show the superior performance of our approach in various network and traffic conditions we have carried out an intensive simulation study where we compare blocking ratios and path lengths and we analyze the dynamic behavior and fairness of the proposed and of reference methods. LA - English DB - MTMT ER - TY - CHAP AU - Cinkler, Tibor AU - Hegyi, Péter AU - Geleji, Géza AU - Szigeti, János AU - Ladányi, Ákos ED - IEEE, Communication Society TI - Adaptive Multi-Layer Traffic Engineering with Shared Risk Group Protection T2 - 2008 IEEE International Conference on Communications, Vols 1-13 PB - IEEE CY - Piscataway (NJ) SN - 9781424420759 T3 - IEEE International Conference on Communications, ISSN 1550-3607 PY - 2008 SP - 5367 EP - 5371 PG - 5 DO - 10.1109/ICC.2008.1006 UR - https://m2.mtmt.hu/api/publication/2618027 ID - 2618027 N1 - Export Date: 9 January 2024 Correspondence Address: Cinkler, T.; High-Speed Networks Laboratory, , Budapest, Hungary; email: cinkler@tmit.bme.hu LA - English DB - MTMT ER - TY - CHAP AU - Cinkler, Tibor AU - Hegyi, Péter AU - Geleji, Géza AU - Szigeti, János ED - IEEE, null TI - Protection for Adaptive Multi-Layer Traffic Engineering T2 - DRCN 2007, 6th International Workshop on the Design of Reliable Communication Networks PB - IEEE Press CY - New York, New York SN - 1424438241 PY - 2007 SP - 266 EP - 272 PG - 7 DO - 10.1109/DRCN.2007.4762288 UR - https://m2.mtmt.hu/api/publication/2605497 ID - 2605497 LA - English DB - MTMT ER - TY - JOUR AU - Szigeti, János AU - Cinkler, Tibor TI - Rule-based advertisement and maintenance of network state information in optical-beared heterogeneous networks JF - LECTURE NOTES IN COMPUTER SCIENCE J2 - LNCS VL - 4534 PY - 2007 SP - 279 EP - 288 PG - 10 SN - 0302-9743 DO - 10.1007/978-3-540-72731-6_31 UR - https://m2.mtmt.hu/api/publication/2627458 ID - 2627458 N1 - WoS:hiba:000247270800031 2020-08-27 04:37 típus nem egyezik AB - A more flexible routing of better performance can be achieved in multilayer networks when the controllers of different network layers are "peering" instead of "overlaying", i.e., instead of the simple overlay model the peer interconnection or the vertically integrated model is used, and Label Switched Paths are searched in a Wavelength Graph that represents the network state very accurately. However, routing in "Peer network" does not only require large databases for storing the Wavelength Graph and complex path-search algorithms, it also increases the load of control channels, as more link state changes must be advertised. Much of the link state information is, however, redundant as the state changes are not independent. In this paper we propose a method for topology information advertisement and maintenance to significantly reduce the amount of control messages without deteriorating the quality of routing. LA - English DB - MTMT ER - TY - JOUR AU - Cinkler, Tibor AU - Hegyi, Péter AU - Asztalos, Márk AU - Geleji, Géza AU - Kern, András AU - Szigeti, János TI - Multi-Layer Traffic Engineering through Adaptive Lambda-path Fragmentation and De-Fragmentation: The Grooming-Graph and Shadow-Capacities JF - LECTURE NOTES IN COMPUTER SCIENCE J2 - LNCS VL - 3976 PY - 2006 SP - 715 EP - 726 PG - 12 SN - 0302-9743 DO - 10.1007/11753810_60 UR - https://m2.mtmt.hu/api/publication/1789071 ID - 1789071 N1 - WoS:hiba:000238114800060 2020-12-06 02:18 típus nem egyezik LA - English DB - MTMT ER - TY - JOUR AU - Geleji, Géza AU - Asztalos, Márk AU - Cinkler, Tibor AU - Hegyi, Péter TI - A hullámhossz-utak adaptív fragmentálása forgalomkötegeléses WDM optikai hálózatokban JF - HIRADÁSTECHNIKA (1962) J2 - HIRADÁSTECHNIKA VL - 61 PY - 2006 IS - 2 SP - 54 EP - 59 PG - 6 SN - 0018-2028 UR - https://m2.mtmt.hu/api/publication/1789078 ID - 1789078 LA - Hungarian DB - MTMT ER - TY - CHAP AU - Perényi, Marcell Ádám AU - Hegyi, Péter AU - Szigeti, János AU - Cinkler, Tibor AU - Sallai, Gyula TI - Joint Grooming Capability and Wavelength Number Optimization with Protection T2 - WTC 2006 SN - 3800736020 PY - 2006 SP - 1 EP - 8 PG - 8 UR - https://m2.mtmt.hu/api/publication/2605501 ID - 2605501 LA - English DB - MTMT ER - TY - CHAP AU - Perényi, Marcell Ádám AU - Ladányi, Ákos AU - Cinkler, Tibor ED - Marciniak, M. TI - Joint Grooming Capability and Wavelength Number Optimization T2 - 2005 7th International Conference on Transparent Optical Networks, Vol 1, Proceedings PB - IEEE Press CY - New York, New York SN - 0780392361 PY - 2005 SP - 77 EP - 84 PG - 8 DO - 10.1109/ICTON.2005.1505757 UR - https://m2.mtmt.hu/api/publication/2612974 ID - 2612974 LA - English DB - MTMT ER - TY - CHAP AU - Szigeti, János AU - Ballók, István AU - Cinkler, Tibor ED - Marciniak, M. TI - Efficiency of Information Update Strategies for Automatically Switched Multi-domain Optical Networks T2 - 2005 7th International Conference on Transparent Optical Networks, Vol 1, Proceedings PB - IEEE Press CY - New York, New York SN - 0780392361 PY - 2005 SP - 445 EP - 454 PG - 10 DO - 10.1109/ICTON.2005.1505840 UR - https://m2.mtmt.hu/api/publication/2619979 ID - 2619979 N1 - Cited By :7 Export Date: 28 May 2020 Correspondence Address: Szigeti, J.; High-Speed Networks Laboratory, Department of Telecommunications and Media Informatics, Budapest University of Technology and Economics, Magyar tudósok krt. 2, H-1117 Budapest, Hungary; email: szigeti@tmit.bme.hu AB - The routing and wavelength assignment algorithm is a complex task in today's dynamically switched networks. As the number of network nodes and links increases, advertising link states requires more control messages, larger databases and more processing capacity while searching for an available path. Information aggregation in multi-domain networks helps us to reduce the number of advertised links. Furthermore, there are numerous information update strategies that also result in less link state control messages. However, these enhancements are done on the account of information inaccuracy, which leads to higher blocking ratio and longer setup delays. In our article we present a Physical Device Abstraction Layer for the Control Plane where interior optical switches having different multiplexing capabilities and exterior autonomous domains are treated in a unified way. Next we show and analyse solutions for how to apply information update strategies on multilayer networks and how to extend these strategies to fit into multidomain environment. LA - English DB - MTMT ER - TY - GEN AU - Tibor, Cinkler TI - Routing, TE and Resilience in Heterogeneous GMPLS Networks. WGN5: V Workshop in G/MPLS networks TS - WGN5: V Workshop in G/MPLS networks PY - 2005 UR - https://m2.mtmt.hu/api/publication/23931136 ID - 23931136 LA - English DB - MTMT ER -