A Novel Adaptive Coding Technology for Reliable Transmission in Cross-Datacenter Networks

Abstract

More and more service providers deploy applications in data centers connected by the wide area network (WAN). WAN makes these data center networks (DCNs) interconnected to a certain extent, but the security problems within the network are increasingly prominent. Especially when a malicious attack occurs, data transmission across data center network may lead to packet loss, resulting in adverse effects such as data transmission delay, low throughput and network bandwidth waste. In order to ensure the reliability of cross DCN traffic transmission under malicious traffic attack, a coding method is proposed to achieve low delay and high throughput of cross DCN information under malicious traffic attack. This method uses forward error correction (FEC) coding based on the traditional fountain code. Specifically, senders encode the original data into more coded packets than the original data, while receivers can recover the complete effective data even in the case of packet loss. In addition, the coding module will dynamically adjust the number of redundant packages according to the network conditions to alleviate congestion. NS-3 simulation results show that under malicious traffic attack, FEC coding can reduce the transmission delay by 35% and improve the throughput by 30% compared with the existing schemes.