Abstract
In this work, we discover the feasible methods of using Network Function Virtualization (NFV) to reduce the complexity and cost of implementing and deploying the Time- aware Shaper (TAS). TAS is one of the traffic shapers presented in the recent IEEE Time Sensitive Networks (TSN) standard for industrial Ethernet. Virtualizing network functions decouples them from proprietary hardware but imposes performance challenges. We research high performance NFV techniques and use Data Plane Development Kit (DPDK) to implement a virtual TAS with a feasible performance for factory level industrial applications. Furthermore, we design a complete framework that provides preliminary schedule calculation, transmission selection, TAS controller, and time synchronization. Additionally, the framework includes evaluation tools; traffic generation and performance measurement. We evaluate our virtual TAS using delay and frame loss metrics, and a small Service Function Chain (SFC). The evaluation considers different loads of Best Effort Traffic (BET) and external disturbance, and varied Time-critical Traffic (TCT) specifications.
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