Network Computing | ||||||||||
Issue
39 - March 2004
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During the recent CTNET upgrade, the CityU's campus network had expanded in terms of capacity and supported features so as to provide a smooth platform for deploying advanced network applications and services. After the upgrade exercise, the CTNET now composes more than 200 networking devices, including switches, routers and network appliances. A single Network Management System (NMS) is therefore required to monitor the complex and expanding network. The NMS should meet the following requirements:
Functional Components of NMS NMS is a suite of integration management software that allows network administrators to manage the network devices from a single interface. The NMS is composed of three main functional components:
Architecture of NMS The NMS is based on layered architecture. The processing of the network and application performance data are broken down into three phases:
Nowadays, mission critical applications are more dependent on the quality of network environment, it is important to monitor not only the availability of the network but also the health, performance of network devices as well as response time of the applications servers. The NMS can meet these requirements by collecting and processing application performance information - especially from user perspectives. With the installation of small agent software into client workstations, the application response time, network delay and throughput of most IP based application/services can be measured and recorded. With prolonged use of the application with monitoring, the trend of the application response time, network delay, server loading and throughput can be easily obtained, thus provides network management and server administrators with valuable information in traffic base lining, troubleshooting and capacity planning.
As can be seen, the deployment of NMS does help network administrators not only to monitor the day-to-day network status but also provide real-time alarm, capacity planning and detailed reporting function. In addition, with the application monitoring function, the NMS provides a clear view of how a network application behaves along the network access path; from clients, networks to application servers. Combining the network and application monitoring capabilities, we now have a total network management solution for our campus network. |
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