Focused interfaces for end-user network management

Managers in Governance Networks: How to Reach Good Outcomes?

The Telecommunications Information Networking Architecture (TINA) defines a framework to support the rapid and flexible deployment and management of a wide range of multi-media, multi-party services in a multi-vendor telecommunications environment. The TINA approach applies opendistributed processing (ODP) and object-oriented design techniques to specify the control and management of the telecommunications services and infrastructure. Management in TINA is applied to the different components of the architecture, services and resources, and to thedistributed processingenvironment (DPE) that provides distribution transparencies and communication capabilities among TINA components. Management in TINA is based on TMN and extended with ODP concepts, as TINA is not concerned with just network management, but also systems management. TINA management architecture addresses aspects of distribution, interoperability, dynamic manager/managed roles, and integration with service control functions. TINA service management concerns different activities of the service life-cycle, from four main aspects: access session management, service session management, user session management and communication session management. The TINA network resource model supports requirements from both network management activities and service connectivity needs.

Network management has suffered from increases in business, system, and operational complexity. This has been exacerbated by the heterogeneity in management data as well as the high quality requirements of multimedia services. Autonomic networking manages this growing complexity by adding intelligence inside network nodes and network management applications. While most autonomic applications simply use a control loop to monitor and configure entities, our work is aimed at building a self-governing network that is able to fulfill the requirements of current and future services. This means that management applications need a detailed and dynamic view of the contextual status of the network nodes as a whole in order to adapt their behaviour to changing context. In this paper, we propose an algorithm to semi-automatically generate filter rules based on existing information in a network management information model. These filter rules are used to determine the set of contextual data that needs to be exchanged with other nodes. The algorithm exploits the reasoning capabilities of ontologies and relies on the introduction of additional semantic relationships to achieve a fine-grained context exchange model. Large scale evaluations were conducted to characterise the performance of this ontological approach.

As SDN technology is becoming popular in the field of computer networks management, the need for evolvable SDN-based network management systems arises. SDN facilitates introducing abstractions to the network through programmability and control separation. In this paper, we propose an abstraction in the SDN management layer through adopting a concept of separation of network concerns. We present a management framework, termed NWManager, that provides an abstraction to the network administrator through policies based on network management functions, like behaviour analysis and monitoring, quality of service preservation and security. And based on network concerns as follows, application, communication, resources concern and common concern representing the area of intersection between basic concerns. NWManager provides various network management functions in one system. Our conducted network simulation scenario by mininet demonstrates that this abstraction and separation of concerns in management layer facilitates and enhances the management of the network. As well, it extends the network control parameters provided to the network administrator.

A variety of Web-based applications, mobile apps, and other over the top data services with affordable 3G/4G enabled smart devices are major factors for enormous increase in heterogeneous data traffic at enterprise and mobile networks. This creates challenges regarding traffic management and requires traffic-aware intelligent network management to deliver sustained quality of experience for subscribers. Deep packet inspection and analysis (DPIA) provides base platform for development of traffic-aware intelligent network management and security systems. However, computationally complex DPIA-related packet processing for high speed data traffic makes these systems expensive. Furthermore, conventionally these traffic-aware network management and security systems are deployed in enterprise networks with independent and dedicated DPIA-related processing resources and require multiple copies of passively provisioned high speed data from network, while performing similar DPIA operations over the same data again and again. This duplicate deployment of expensive software and hardware resources for DPIA processing eventually results in higher capital expenditures as well as operational expenditures for network operators. We have proposed a novel service-oriented framework for heterogeneous deep packet inspection and analysis (SoDPI) that simultaneously provides diversified DPIA services to multiple client applications for network management and security operations in high-speed networks. Proposed framework provides flexible and comprehensive API-based service interface for client applications to register required DPIA services. SoDPI framework implementation is based on commodity hardware and deploys shared set of DPIA-related packet processing components, requiring only single copy of passive data provisioned from network. Experimental evaluations show that novel SoDPI framework requires considerably reduced amount of software and hardware resources to fulfill heterogeneous DPIA packet processing requirements for multiple client applications in comparison with conventional network management and security applications with dedicated DPIA components. This results in lower cost impacts for network operators with more network manageability.

Introducing a simulation tool for WirelessHART networks

Most service and network management applications are developed to use vendor- and device-specific management data. These data are produced from different languages, and hence can have different representations of the same concept. We define a novel knowledge representation and mapping mechanism that uses ontological concepts and relations to generate a formal description for the Directory Enabled Networks new generation information model. This endows the model with the necessary semantic richness and formalism to represent different types of information for use in network management operations. Data is extracted from models, and is used to represent facts. These facts are semantically related to concepts and relations from one or more ontologies using a lexicon. A new data structure is then built by combining knowledge extracted from model elements with knowledge extracted from ontological elements. Semantic relatedness measures are then used to associate modeled data with ontological data. Early results are also presented.

Today few organizations have a thorough understanding of what is on their networks at any given time. This study tries to develop Computer and Network Asset Manager (CNAM) that is a network management application which helps large enterprises, and Small medium enterprises (SMEs) service providers, manage their data centers and IT infrastructure efficiently and cost effectively. CANM collects information on all hardware components of the network instruments that are on the network. In this project, a real-time network monitoring method is suggested for dynamic information to reduce the complexity and cost based on network management. In the proposed method, a Simple Network Management Protocol (SNMP) is first used to collect data for start interaction between equipment in the specific data center, to gather these data SNMP would need to request it from Management Information Base (MIB) that served as a database for stored information. Furthermore, to ensure data authenticity in the management station that fetches real-time data periodically from equipment, network engineer would have to manually key-in static information into CNAM when it was first launched. The SNMP would then pick up on this stored static information and automatically began collecting real-time data; this feature will be developed with the help of Model View Controller (MVC) pattern that is a software pattern for implementing user interfaces. It allows users to have interaction with the CNAM as well as input the related data. The object oriented approach shall be used to implement SNMP and MIB which represents system management information. Web Based Enterprise Management (WBEM) is required in order to transfer protocol like SNMP, as well as to enter the actual data manually for further authenticity with the real time data. This study would hopefully encourage companies to try an interactive solution for problem in managing their equipment in the data center.

This article describes a key derivation method that greatly simplifies key distribution issues for network management (NM) applications and may in some cases relieve NM stations from the need to store any keys at all. This method is easily generalized for network protocols and applications where several masters need to talk to a large number of slaves. It shows a way to cut down on the amount of keys stored with little impact on security. This is especially important when human users are involved.

Network management is a requirement within CIM. Network management provides a lot of facilities to efficiently monitor and control the communication systems. Manufacturing system must reap the advantages of network management facilities and adapts them to the LAN problems. This requires some additional network management functionalities to take into account the specific user requirements at the manufacturing application level. We propose a manufacturing LAN management model which is built on a hierarchical organization of network management activities. Our model limits the problem of integration to the network management part which is directly exploited by end users. It allows a realistic and easy integration of network management within a CIM architecture. >

In this paper a new method is proposed that solves for the steady state of pressure-dependent models (PDMs) with flow control valves. Rather than model flow devices individually, the method solves the more general problem in which a water distribution system (WDS) has some link flows constrained to lie between upper and lower, or possibly equal, set limits. No heuristics are used to determine device states. The method is shown to be fast, and its effectiveness is demonstrated on PDM WDSs with up to about 20,000 links and 18,000 nodes and 60 link flow constraints, some of which prescribe a fixed flow. The method has applications in network management, network design, and flow control to deal with water distribution where there is insufficient supply.

In-band network telemetry (INT) enriches network management at scale through the embedding of complete device-internal states into each packet along its forwarding path, yet such embedding of INT information also incurs significant band-width overhead in the data plane. We propose DeltaINT, a general INT framework that achieves extremely low bandwidth overhead and supports various packet-level and flow-level applications in network management. DeltaINT builds on the insight that state changes are often negligible at most time, so it embeds a state into a packet only when the state change is deemed significant. We theoretically derive the time/space complexities and the bounds of bandwidth mitigation for DeltaINT. We implement DeltaINT in both software and P4. Our evaluation shows that DeltaINT reduces up to 93% of INT bandwidth, and its deployment in a Barefoot Tofino switch incurs limited hardware resource usage.

While the networks of different Telecommunications Administrations forming a global network are interconnected, their Network Management Systems (NMSs) are isolated from each other. As a result, various network management functions (e.g., configuration, fault management) necessary for managing the network resources common to the administrations require extensive manual coordination and exchange of information using telephone and facsimile. In this paper, we present a standards based interoperable interface between network management systems belonging to different administrations. The interface is based on Telecommunications Management Network (TMN) architecture and standards. It is intended to automate and standardize information exchanged between the administrations so that network maintenance and provisioning activities could be done with minimal human involvement at the far-end administration. The interface provides significant benefits in improving the quality and the cycle time of provisioning and maintenance, implementing proactive maintenance, and greater awareness of the end-to-end performance of the managed resources.

Java preserves much of Cpp, and offers compelling benefits: it is object-oriented, portable and relatively easy to master and maintain. These, and other benefits, can greatly speed the development cycle for Web-based network management applications. This article discusses these issues, and gives an overview of Java’s relevance for network managers. © 1998 John Wiley & Sons, Ltd.

In this paper we describe a distributed and dynamic architecture for network management of a heterogeneous distributed system which we have implemented in order to perform network management of our local distributed system. The architecture is highly generic in nature and can be extended to a large heterogeneous network. The architecture is distributed in nature as it provides for multiple managers acting simultaneously. It is rendered dynamic by the utilization of mobile agents for the implementation of network management functionalities. The network managers in our architecture utilize client-server technology and/or mobile agent technology as and when required depending on the functionality implemented and their location. In this context we have implemented a Mobile Network Manager (MNM) which is a location independent network manager. Mobile agents are furnished by MAGENTA (Mobile AGENT environment for distributed Applications) which we have implemented for this purpose.