公开(公告)号：EP2850791A1

公开(公告)日：2015-03-25

申请号：EP13843750.4

申请日：2013-09-30

申请人： NEC Laboratories America, Inc.

发明人： LUMEZANU, Cristian ,  YU, Curtis ,  SINGH, Vishal Kumar ,  ZHANG, Yueping ,  JIANG, Guofei

IPC分类号： H04L12/813 ,  H04L12/24

CPC分类号： H04L41/12 ,  H04L43/0876 ,  H04L43/10 ,  Y02D30/30

摘要： A method implemented in a network apparatus used in a network is disclosed. The method includes sensing network topology and network utilization, receiving a request from an application, deciding path setup requirement using network state information obtained from the network topology and the network utilization, and translating the path setup requirement into a rule to be installed. Other methods, apparatuses, and systems also are disclosed.

公开(公告)号：EP2807563A1

公开(公告)日：2014-12-03

申请号：EP13741063.5

申请日：2013-01-09

申请人： NEC Laboratories America, Inc.

发明人： LUMEZANU, Cristian ,  JIANG, Guofei ,  ZHANG, Yueping ,  SINGH, Vishal ,  AREFIN, Ahsan

IPC分类号： G06F11/36 ,  G06F9/44

CPC分类号： G06F11/3476 ,  G06F11/0793 ,  G06F11/3006 ,  G06F11/3017 ,  G06F11/302 ,  G06F11/3055 ,  H04L41/142 ,  H04L41/145 ,  H04L43/04

摘要： A debugging system used for a data center in a network is disclosed. The system includes a monitoring engine to monitor network traffic by collecting traffic information from a network controller, a modeling engine to model an application signature, an infrastructure signature, and a task signature using a monitored log, a debugging engine to detect a change in the application signature between a working status and a non-working status using a reference log and a problem log, and to validate the change using the task signature, and a providing unit to provide toubleshooting information, wherein an unknown change in the application signature is correlated to a known problem class by considering a dependency to a change in the infrastructure signature. Other methods and systems also are disclosed.

公开(公告)号：EP2772021A2

公开(公告)日：2014-09-03

申请号：EP13735761.2

申请日：2013-01-09

申请人： NEC Laboratories America, Inc.

发明人： LUMEZANU, Cristian ,  JIANG, Guofei ,  ZHANG, Yueping ,  SINGH, Vishal ,  WANG, Ye

IPC分类号： H04L12/26

CPC分类号： H04L47/12 ,  H04L43/026 ,  H04L43/16 ,  H04L47/2441 ,  H04L47/41 ,  H04L63/1425 ,  Y02D50/30

摘要： A device used in a network is disclosed. The device includes a network monitor to monitor a network state and to collect statistics for flows going through the network, a flow aggregation unit to aggregate flows into clusters and identify flows that can cause a network problem, and an adaptive control unit to adaptively regulate the identified flow according to network feedback. Other methods and systems also are disclosed.

公开(公告)号：EP2567316A2

公开(公告)日：2013-03-13

申请号：EP11778318.3

申请日：2011-05-05

申请人： NEC Laboratories America, Inc.

发明人： DING, Min ,  SINGH, Vishal ,  ZHANG, Yueping ,  JIANG, Guofei

IPC分类号： G06F9/44 ,  G06F15/16

CPC分类号： G06F9/54 ,  G06F11/3006 ,  G06F11/302 ,  G06F11/3051 ,  H04L41/046 ,  H04L43/0876 ,  H04L43/12

摘要： A method and a system are disclosed for determining application dependency paths in a data center. The method and the system captures application traffic volume data on the servers with switches and monitoring agents; generates an application traffic matrix of all the components of the applications based on the application traffic volume data; estimates the number of the applications in the data center from the traffic matrix with a Rank Estimation via Singular Value Decomposition or Power Factorization Residue Errors process; and decomposes the traffic matrix into a first matrix and a second matrix with a non-negative matrix factorization process using the estimated number of applications. The first matrix represents a set of the components belonging to each of the applications and the second matrix represents the amount of traffic generated by each application over time. Any noise in the first and second matrices is removed with a concurrent volumes ratios based correlation process.