vCRIB: virtualized rule management in the cloud
Masoud Moshref, Minlan Yu, Abhishek B. Sharma, Ramesh Govindan · 2012
Cloud operators increasingly need many fine-grained rules to better control individual network flows for var-ious management tasks. While previous approaches have advocated placing rules either on hypervisors or switches, we argue that future data centers would benefit from leveraging rule processing capabilities at both for better scalability and performance. In this paper, we pro-pose vCRIB, a virtualized Cloud Rule Information Base that allows operators to freely define different manage-ment policies without the need to consider underlying resource constraints. The challenge in our approach is the design of a vCRIB manager that automatically par-titions and places rules at both hypervisors and switches to achieve a good trade-off between resource usage and performance. 1