Traditional IP networks are difficult to manage, owing to their rapid expansion and dynamic
changes. Software‐defined networks are introduced to simplify network management by …

After big disasters, a damaged area can be out of contact because of severe damage of
existing network infrastructures. Meanwhile, high demands for network connections to the …

Our experiences in East Japan Earthquake show that disasters will cause a large-scale
network interruption due to serious damage of existing network infrastructures. To enable …

BACKGROUND In order to optimize network performance and improve network utilization, it
is desirable to understand character istics of traffic transmitted through a data network. A …

In Software-Defined Networking (SDN) links and switches (nodes) from data plane suffer
from failure and impact network operations. In the presence of such failures, switches can …

Network survivability is the ability to maintain service continuity in the presence of failures.
This ability might be critical in times where large-scale failures occur, as in the case of …

Many new cloud services and applications have emerged recently. They account for a large
share of traffic in Wide Area Networks (WANs) and provide traffic with various Quality of …

Communication link failure is common in any network. In Software Defined Network (SDN),
protection-based recovery scheme reduces the failure recovery delay by installing …

Currently, urban environments are the basic human habitat. Large and complex
infrastructures coordinate urban life and make it possible in high-density scenarios. In this …

Currently, it is hard to imagine our lives without the Internet, where services are accessed
and shared by billions of users every day. However, even after many years, the Internet …