DocumentCode :
187759
Title :
Fast Recovery in Software-Defined Networks
Author :
van Adrichem, Niels L. M. ; Van Asten, Benjamin J. ; Kuipers, Fernando A.
Author_Institution :
Network Archit. & Services, Delft Univ. of Technol., Delft, Netherlands
fYear :
2014
fDate :
1-3 Sept. 2014
Firstpage :
61
Lastpage :
66
Abstract :
Although Software-Defined Networking and its implementation OpenFlow facilitate managing networks and enable dynamic network configuration, recovering from network failures in a timely manner remains non-trivial. The process of (a) detecting the failure, (b) communicating it to the controller and (c) recomputing the new shortest paths may result in an unacceptably long recovery time. In this paper, we demonstrate that current solutions, employing both reactive restoration or proactive protection, indeed suffer long delays. We introduce a failover scheme with per-link Bidirectional Forwarding Detection sessions and preconfigured primary and secondary paths computed by an OpenFlow controller. Our implementation reduces the recovery time by an order of magnitude compared to related work, which is confirmed by experimental evaluation in a variety of topologies. Furthermore, the recovery time is shown to be constant irrespective of path length and network size.
Keywords :
computer network reliability; software defined networking; telecommunication links; telecommunication network topology; OpenFlow facilitate managing network; dynamic network configuration; failover scheme; failure detection; network failure recovery; path length; per-link bidirectional forwarding detection session; proactive protection; reactive restoration; recovery time; recovery time reduction; software defined network; Delays; Monitoring; Network topology; Ports (Computers); Protocols; Switches; Topology; bfd; delay; ethernet; failover; failure; network; oam; openflow; protection; recovery; resilience; restoration; robustness; sdn; software-defined networking;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Software Defined Networks (EWSDN), 2014 Third European Workshop on
Conference_Location :
Budapest
Type :
conf
DOI :
10.1109/EWSDN.2014.13
Filename :
6984053
Link To Document :
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