The second makes it easier to use your system from day to day. You might wish to look for the features you need. Please keep in mind, there will probably be overlap in management functions. Many services are provided to varying degrees by your Network Operating System, routers, etc. By drawing on a database consisting specifically of date for the entire network, the NMS can organize, analyze, and predict network faults and trends.
Performance is an umbrella for a number criterion.
Accessibility essentially means ease of use. Other features you may wish to look for are ease of migration, upgradeability and security. The 5 tasks you may wish to manage are configuration, fault, performance, security and accounting. Configuration Management Fault Management Performance Management Security Management Accounting Management Hardware Management Utilities Hardware utilities manage your hubs, concentrators, routers, and bridges on the network. These utilities can optimize network performance, investigate traffic bottlenecks and identify network problems before they become critical.