Quan Xiao, Rensselaer Polytechnic Institute, United States; Hui Yuan, Princeton University, United States; A F M Saif, Rensselaer Polytechnic Institute, United States; Gaowen Liu, Ramana Kompella, Cisco Research, United States; Mengdi Wang, Princeton University, United States; Tianyi Chen, Rensselaer Polytechnic Institute, United States