Performance Analysis of Load-Aware Anycasting Based on OpenFlow

Anycast is a practical solution for service discovery among replication of multiple instances in the Internet. OpenFlow is a good candidate to solve the problems of non-awareness of topology changes, costly address translation and low flexibility resulting from anycast service. This paper presents a new anycast mechanism based on OpenFlow technology using the controller to make anycast routing decisions. The controller possesses the knowledge of network topology and link status to realize load-aware anycasting. The effectiveness and accuracy of the proposed scheme is validated by extensive simulation experiments. The results show that the performance of the presented load-aware anycasting outperforms that of existing anycast schemes.