ComCell: Exploring flexible and symmetrical architecture for data center networks

The flexible architectures address the determined server population in the rigid designs of data centers networks. However, the asymmetrical connection of flexible architectures will introduce load imbalance. To address this issue, we take flexibility and symmetry into consideration and propose ComCell. ComCell is recursively constructed on the division of ports in a switch, where all switches play an equal role. By exploring the interconnection properties, we propose divide-and-conquer path and fault-tolerance routing on the proposed architecture. ComCell benefits data canter networks by flexible design space, double-exponential scalability and good fault tolerance, as well as high network performance. Evaluations under various traffic loadings demonstrate the performance of ComCell in routing delay and spreading out network congestion.