Optional software modules, including an expert system for automatic symptom detection and diagnosis of network problems, and a distributed module for remote diagnosis, are also available. And with a number of proactive tools at their disposal, network managers are better equipped to handle the unexpected challenges of today's complex infrastructures. Examples of these costs would be for disk storage, telecommunication expenses, or ISP connect time. This might include both physical and logical network arrangements. The key word here is evaluated, which would include gathering statistical and historical information and evaluating the system's performance under a variety of conditions.
Many tools are available to measure performance.
These include protocol analyzers, network monitoring software, and various utilities that come with the console programs of network operating systems. From these five areas are derived all functions necessary to manage a complex internetwork. Only with a comprehensive network management strategy can the enterprise network be effectively managed. Right now, the jury is still out on which of these alternatives, or combination of alternatives, will be most widely implemented. A trade organization known as the QoS Forum has been established as a central point for information exchange, interoperability testing, and education.