Intra-Domain Routing Convergence with Centralized Control
2009 (English)In: Computer Networks, ISSN 1389-1286, E-ISSN 1872-7069, Vol. 53, no 18, 2985-2996 p.Article in journal (Refereed) Published
The decentralized control scheme for routing in current IP networks has been questioned, and a centralized routing scheme has been proposed as an alternative. In this paper, we compare the convergence of centralized control scheme with decentralized link-state routing protocols. We first review the architectural advantages and challenges of centralized control. Thereafter, we identify and discuss the components of the convergence time in both schemes. We present how to achieve fast routing convergence in networks with centralized control. in particular, we analyze how to distribute forwarding information efficiently. Finally, we perform simulation studies on the convergence time for both real and synthetic network topologies and study the impact of control element location, link weights, and number of failures on the convergence time. The results show that the centralized control scheme can provide faster routing convergence than link-state routing protocols.
Place, publisher, year, edition, pages
2009. Vol. 53, no 18, 2985-2996 p.
Routing convergence; Centralized control; Link-state routing protocols
IdentifiersURN: urn:nbn:se:kth:diva-9437DOI: 10.1016/j.comnet.2009.07.008ISI: 000272862600002ScopusID: 2-s2.0-70449526570OAI: oai:DiVA.org:kth-9437DiVA: diva2:113969
QC 20100726. Uppdaterad från submitted till published (20100726).2008-11-032008-11-032013-09-09Bibliographically approved