OFFICER: A general Optimization Framework for OpenFlow Rule Allocation and Endpoint Policy Enforcement

Xuan-Nam Nguyen 1 Damien Saucez 1 Chadi Barakat 1 Thierry Turletti 1
1 DIANA - Design, Implementation and Analysis of Networking Architectures
CRISAM - Inria Sophia Antipolis - Méditerranée
Abstract : The Software-Defined Networking approach permits to realize new policies. In OpenFlow in particular, a controller decides on behalf of the switches which forwarding rules must be installed and where. However with this flexibility comes the challenge of the computation of a rule allocation matrix meeting both high-level policies and the network constraints such as memory or link capacity limitations. Nevertheless, in many situations (e.g., data-center networks), the exact path followed by packets has not significant impact on performances as long as packets are delivered to their final destination decided by the endpoint policy. It is thus possible to deviate part of the traffic to alternative paths so to better use network resources without violating the endpoint policy. In this paper, we propose a linear optimization model of the rule allocation problem in resource constrained OpenFlow networks with loose routing policies. We show that the general problem is NP-hard and propose a polynomial time heuristic, called OFFICER, that aims to maximize the amount of carried traffic in under-provisioned networks. Our numerical evaluation on four different topologies show that exploiting various paths allows to increase the amount of traffic supported by the network without significantly increasing the path length.
Keywords : OpenFlow Optimization Rule Allocation
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Conference papers
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Submitted on : Thursday, January 29, 2015 - 1:29:18 PM
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Xuan-Nam Nguyen, Damien Saucez, Chadi Barakat, Thierry Turletti. OFFICER: A general Optimization Framework for OpenFlow Rule Allocation and Endpoint Policy Enforcement. The 34th Annual IEEE International Conference on Computer Communications (INFOCOM 2015), IEEE, Apr 2015, Hongkong, China. ⟨hal-01104519v2⟩

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