Accelerated Service Chaining on a Single Switch ASIC
Dingming Wu, Ang Chen, T. S. Eugene Ng, Guohui Wang, Haiyong Wang · 2019
Network functions and service function chaining are prevalent in cloud and ISP networks. In traditional software-based solutions, scaling up the capacity of these functions requires a large number of server cores. However, edge clouds are severely resource-constrained in terms of space, power, and budget, so traditional methods incur a high cost. We present Dejavu, a system that can offload a service chain to a programmable switch to achieve high performance and resource efficiency. Our system can compose multiple network functions into a single program that preserves the original chaining requirements, and exploit features of the switch ASIC to efficiently deploy the composed program on a single switch.