Scalable Rule Management for Data Centers

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Provided by: USENIX
Topic: Cloud
Format: PDF
Cloud operators increasingly need more and more fine-grained rules to better control individual network flows for various traffic management policies. In this paper, the authors explore automated rule management in the context of a system called vCRIB (a virtual Cloud Rule Information Base), which provides the abstraction of a centralized rule repository. The challenge in their approach is the design of algorithms that automatically off-load rule processing to overcome resource constraints on hypervisors and/or switches, while minimizing redirection traffic overhead and responding to system dynamics. vCRIB contains novel algorithms for finding feasible rule placements and adapting traffic overhead induced by rule placement in the face of traffic changes and VM migration.
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