Don't Interrupt Me When You Reconfigure my Service Function Chains

Abstract : Network Functions Virtualization (NFV) enables the complete decoupling of network functions from proprietary appliances and runs them as software applications on general–purpose servers. NFV allows network operators to dynamically deploy Virtual Network Functions (VNFs). Software Defined Networking (SDN) introduces a logically centralized controller which maintains a global view of the network state. The centralized routing model of SDN jointly with the possibility of instantiating VNFs on–demand open the way for a more efficient operation and management of networks. In this paper, we consider the problem of reconfiguring network connections with the goal of bringing the network from a sub-optimal to an optimal operational state. We propose optimization models based on the make-before-break mechanism, in which a new path is set up before the old one is torn down. Our method takes into consideration the chaining requirements of the flows and scales well with the number of nodes in the network. We show that, with our approach, the network operational cost defined in terms of both bandwidth and installed network function costs can be reduced and a higher acceptance rate can be achieved
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Contributor : Joanna Moulierac <>
Submitted on : Tuesday, March 19, 2019 - 2:08:44 PM
Last modification on : Friday, May 3, 2019 - 10:12:05 AM


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  • HAL Id : hal-01963270, version 2


Adrien Gausseran, Andrea Tomassilli, Frédéric Giroire, Joanna Moulierac. Don't Interrupt Me When You Reconfigure my Service Function Chains. [Research Report] RR-9241, UCA, Inria; Université de Nice Sophia-Antipolis (UNS); CNRS; UCA,I3S. 2018. ⟨hal-01963270v2⟩



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