Network management

About: Network management is a research topic. Over the lifetime, 17859 publications have been published within this topic receiving 234520 citations. The topic is also known as: computer network management & NM.

Encrypted Traffic Classification with a Convolutional Long Short-Term Memory Neural Network

Abstract: With the rapidly emerging encryption techniques for network traffic, the classification of encrypted traffic has increasingly become significantly important in network management and security. In this paper, we propose a novel deep neural network that combines both the convolutional network and the recurrent network to improve the accuracy of the classification results. The convolutional network is used to extract the packet features for a single packet. The recurrent network is trained to pick out the flow features based on the inputs of the packet features of any three consecutive packets in a flow. The proposed model surpasses the existing studies which ask for the first packets of a flow, and it provides more flexibility in real practice. We compare our model with the existing work under deep learning for encrypted traffic classification, based on the public dataset. The experimental results show that our model outperforms the state-of-the-art work in terms of both higher efficiency and effectiveness.

Online QoS Management for Multimedia Real-Time Transmission in Industrial Networks

Abstract: A growing number of industrial applications incorporate multimedia information processing. These multimedia applications are commonly distributed and subject to time constraints that must be met across networks without creating intolerable interference over typical control flows. However, multimedia traffic, in general, and video streaming, in particular, have specific characteristics that conflict with the operational framework of conventional real-time protocols. In particular, video compressors generate highly variable bit-rate streams that mismatch the constant-bit-rate channels typically provided by real-time protocols, severely reducing the efficiency of network utilization. This paper focuses on low-latency multimedia transmission over Ethernet with dynamic quality-of-service (QoS) management. We propose a multidimensional mechanism that controls, in an integrated way, both the compression parameters and the network bandwidth allocated to each stream. The goal is to provide the best possible QoS to each stream, recomputing the compression levels and network bandwidth whenever significant events, such as channel setup/teardown, or structural changes happen. This paper also presents novel QoS metrics based both on the image quality and network parameters. Several experiments with prerecorded video streams illustrate the advantages of the proposed approach and the convenience of the metrics.

Two-level pointer forwarding strategy for location management in PCS networks

Abstract: For a IPCS network to effectively deliver services to its mobile users, it must have an efficient way to keep track of the mobile users. The location management fulfills this task through location registration and paging. To reduce the signaling traffic, many schemes such as a local anchor (LA) scheme, per-user caching scheme and pointer forwarding scheme have been proposed in the past. In this paper, we present a new location management scheme which intends to mitigate the signaling traffic as well as reduce the tracking delay in the PCS systems. In this strategy, we choose a set of visitor location registers (VLRs) traversed by users as the mobility agents (MA), which form another level of management in order to make some registration signaling traffic localized. The idea is as follows: instead of always updating to the home location register (HLR), which would become the bottleneck otherwise, many location updates are carried out in the mobility agents. Thus, the two-level pointer forwarding scheme is designed to reduce the signaling traffic: pointers can be set up between VLRs as the traditional pointer forwarding scheme and can also be set up between MAs. The numerical results show that this strategy can significantly reduce the network signaling traffic for users with low CMR without increasing much of the call setup delay.

Representing and verifying network management policies using collective constraints

Abstract: A method and apparatus are provided for representing abstract network management policies and processing such policies to resolve conflicts. In one aspect, the invention provides a method of managing a network according to a plurality of network management policies, comprising the steps of storing each of the policies as a constraint that comprises one or more variables, a set of possible values, and a set of restrictions on the values that the variables can simultaneously take; storing one or more collective constraints, in which at least one of the constraints is that none of the variables may interfere with one another; applying a constraint satisfaction algorithm to the stored variables, values, restrictions, to create zero or more solutions and checking the solution set against the collective constraints; identifying a conflict in the policies when zero solutions are created and when one or more of the instance or collective constraints is violated; and resolving the conflict by modifying one or more of the variables, values or restrictions. Using a collective constraint representation, policy conflicts are rapidly identified and resolved. Resolution may be accomplished simply by adding a constraint that defines a change in a variable, value, or restriction or redefining the collective constraints.

Method and apparatus for synchronizing implementation of configuration information in a communication system

Abstract: A communication system (100) for synchronizing implementation of configuration information includes a network manager (105) for transmitting the configuration information and communication devices (110, 115) coupled to the network manager (105) for receiving the configuration information and responding with confirmations indicating that the configuration information is acceptable. In response to receiving the confirmations, the network manager (105) provides to the communication devices (110, 115) an implementation time at which the communication devices (110, 115) begin to utilize the configuration information.