Troubleshooting for Network Operators

Conclusions and Prospects

“Software-defined networks and the maturing of the Internet”

Nick Mckeown, IET Appleton, 2014

C.1. Summary of contributions

Nowadays, the rapid development of the Internet results in more and more multimedia services (e.g. video streaming, online game and so on) and diversified network devices such as IoT devices. The huge number of network devices not only enlarges the network infrastructures but also leads to many critical issues in the network. A downtime on cloud-based services leads to negative economic impacts (e.g. the loss from over $30,000 to $6,700,000) for many service providers (e.g. YouTube, Facebook, PayPal, etc.) (Cérin et al. 2013). Therefore, network troubleshooting has been increasingly concerned over the past two decades. The purpose is to detect anomalies, identify its root causes and implement remediation approaches to deal with these root causes definitively.

Although network troubleshooting is studied thoroughly by the research community, the emergence of encrypted traffic entails many questions regarding its deployment in the context of encrypted traffic. For example, Google developed Quick UDP Internet Connections (QUIC), a transport layer network protocol from 2012 to improve latency in data communication. QUIC also provides an encryption algorithm to guarantee secure data communication in the network. In this case, from the point of view of network operators (NOs), useful information obtained in data packets is hidden, ...