Naslov
Congestion Control for Highly Loaded DiffServ/MPLS Networks

Autori
Krile, Srećko ; Krešić, Dario

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 19th Central European Conference on Informatics and Inteligent Systems / Boris Aurer etc - Varaždin : Fakultet organizacije i informatike Sveučilišta u Zagrebu, 2008, 241-246

Skup
Central European Conference on Information and Intelligent Systems

Mjesto i datum
Varaždin, Hrvatska, 24.09.2008. - 26.09.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
intra-domain QoS routing; traffic engineering; DiffServ/MPLS networks; constraint-based routing

Sažetak
Optimal QoS path provisioning of coexisted and aggregated traffic in networks is still demanding problem. All traffic flows in a domain are distributed among LSPs (Label Switching Path) related to service classes, but the congestion problem of concurrent flows (traversing the network simultaneously) can appear. For LSP creation the IGP (Interior Getaway Protocol) uses simple on-line routing algorithms (e.g. OSPFS, IS-IS) based on shortest path methodology. In the presence of premium traffic where some links may be reserved for certain traffic classes or for particular set of users it becomes insufficient technique. On other hand, constraint based explicit routing (CR) based on IGP metric ensures traffic engineering (TE) capabilities. It may find a longer but lightly loaded path better than the heavily loaded shortest path. In this paper a new approach to explicit constraint-based routing is proposed. LSP can be pre-computed much earlier, possibly during SLA (Service Level Agreement) negotiation process. It could be a very good solution for congestion avoidance and for better load-balancing purpose where links are running close to capacity. To be acceptable for real applications such complicated routing algorithm can be significantly improved. Further improvements through heuristic approach are made and comparisons of results are discussed.

Izvorni jezik
Engleski

Znanstvena područja
Računarstvo, Informacijske i komunikacijske znanosti

POVEZANOST RADA