Internet outages are inevitable, frequent, opaque, and expensive. To make things worse,
they are poorly understood, while a deep understanding of them is essential for …

Network performance anomalies (NPAs), eg long-tailed latency, bandwidth decline, etc., are
increasingly crucial to cloud providers as applications are getting more sensitive to …

Networks are getting larger and more complex; yet administrators rely on rudimentary tools
such as ping and traceroute to debug problems. We propose an automated and systematic …

The availability of data center services is jeopardized by various network incidents. One of
the biggest challenges for network incident handling is to accurately localize the failures …

Of the major factors affecting end-to-end service availability, network component failure is
perhaps the least well understood. How often do failures occur, how long do they last, what …

Network failures continue to plague datacenter operators as their symptoms may not have
direct correlation with where or why they occur. We introduce 007, a lightweight, always-on …

Network measurement is indispensable to network operations. INT solutions that can
provide fine-grained per-switch per-packet information serve as promising solutions for per …

Network operation and maintenance rely heavily on network traffic monitoring. Due to the
measurement overhead reduction, lack of measurement infrastructure, and unexpected …

Fast IPv4 scanning has enabled researchers to answer a wealth of security and networking
questions. Yet, despite widespread use, there has been little validation of the methodology's …

Natural and human factors cause Internet outages---from big events like Hurricane Sandy in
2012 and the Egyptian Internet shutdown in Jan. 2011 to small outages every day that go …