To maintain the performance of the local network, constant monitoring is required. This is an important step in network management, which is often separated from the actual management and performed autonomously. Control consists of two parts - monitoring and analysis.
During monitoring, primary data is collected, which includes the number of frames and protocol packets, the status of ports on switches, routers and hubs, etc. During the analysis, the collected information is comprehended, compared with previously obtained data, and assumptions are made about the reasons for the slowdown of the network or its failures.
For monitoring, meters, hardware and software, network analyzers and testers, internal means of monitoring communication devices, agents of control systems are used.
Analysis and monitoring tools have their own classification. With their help, the analysis of the functioning of the local computer network is carried out.
Management system agents supporting the functionality of one of the standard MIB (management database) use SNMP or CMIP to transfer information. Data from agents is collected automatically.
Installed systems for analysis and control include hardware and software modules for communication equipment and software modules for operating systems network administrator skills.
Protocol analyzers are used to monitor and analyze network traffic.
E kspertnye system designed for fault analysis and diagnosis of their causes. These can be simple context sensitive systems or more complex intelligent knowledge bases.
Cable system diagnostics and certification equipment includes network monitors for cable testing, cable scanners for copper cabling installations, cable continuity testers, and cable system certifiers.
Protocol analyzers are computers with special network cards and software that match the network technology. The analyzer connects to the network as a workstation and is distinguished by the receipt of all data packets. The workstation receives packets addressed to it.
Network analyzers are used to measure the electrical performance of cable systems and certify cables. These are large devices.
Cable scanners measure the electrical and mechanical properties of cables - length, attenuation, impedance, wire pairing, electrical noise. They differ from network analyzers in a lower level of accuracy and portability.
Cable testers are used to diagnose cable breaks. They are simpler than cable scanners, but they detect the point of failure.
In addition, multifunctional portable devices with the functionality of cable scanners and protocol analyzers are used, supporting some functions of control systems. The physical interface of these instruments is used to identify problems and test cables at the physical layer. A microprocessor with software performs the functions of a higher level.
The development of regulations for the maintenance of a computer network is carried out by specialists from the IT department of the company or invited freelancers. The tasks and goals of the computer network maintenance system are to ensure the operability of the entire network and each of its elements, for which the status is checked, and possible malfunctions are detected and corrected. Only a specialist with sufficient qualifications and the required level of professionalism can develop a computer network maintenance system.
The organization's computer network is intended for the implementation of the following production cycles: data storage in a centralized way, document management, production of reports on the work performed, accounting, operation of other transactional systems, printing to a network printer, Internet access, organizing video and audio communication channels, and much more.
Centralized network management software systems collect data on the state of communication equipment and network nodes, on its traffic, and also manage the network in automatic or semi-automatic mode. Management actions include changing parameters, connecting and disconnecting ports, and more.
Network administrator software, network utilities
To manage computer networks, special programs have been created that allow you to control all network devices from the administrator's computer. For administration in a Windows environment , such programs for system administrators as VPN Client Manager, Winbox, Kerio VPN Client, TeamViewer, Radmin, RMS are intended.
Network Modeling
Before creating a local network, it is necessary to simulate it, during which to determine the optimal topology, select equipment, and determine the performance characteristics and protocols. On the model, you can test the impact of bursts of broadcast requests or try out the collapse mode.
Many settings can be figured out during the simulation. Among them are the peak throughput of network sections, the response time of servers in different modes, the impact of installing new servers on the distribution of information flows, optimizing the topology for bottlenecks in the network, checking the operation of various network equipment, the maximum number of users, routing protocol, the impact of traffic on the network
During monitoring, primary data is collected, which includes the number of frames and protocol packets, the status of ports on switches, routers and hubs, etc. During the analysis, the collected information is comprehended, compared with previously obtained data, and assumptions are made about the reasons for the slowdown of the network or its failures.
For monitoring, meters, hardware and software, network analyzers and testers, internal means of monitoring communication devices, agents of control systems are used.
Analysis and monitoring tools have their own classification. With their help, the analysis of the functioning of the local computer network is carried out.
Management system agents supporting the functionality of one of the standard MIB (management database) use SNMP or CMIP to transfer information. Data from agents is collected automatically.
Installed systems for analysis and control include hardware and software modules for communication equipment and software modules for operating systems network administrator skills.
Protocol analyzers are used to monitor and analyze network traffic.
E kspertnye system designed for fault analysis and diagnosis of their causes. These can be simple context sensitive systems or more complex intelligent knowledge bases.
Cable system diagnostics and certification equipment includes network monitors for cable testing, cable scanners for copper cabling installations, cable continuity testers, and cable system certifiers.
Protocol analyzers are computers with special network cards and software that match the network technology. The analyzer connects to the network as a workstation and is distinguished by the receipt of all data packets. The workstation receives packets addressed to it.
Network analyzers are used to measure the electrical performance of cable systems and certify cables. These are large devices.
Cable scanners measure the electrical and mechanical properties of cables - length, attenuation, impedance, wire pairing, electrical noise. They differ from network analyzers in a lower level of accuracy and portability.
Cable testers are used to diagnose cable breaks. They are simpler than cable scanners, but they detect the point of failure.
In addition, multifunctional portable devices with the functionality of cable scanners and protocol analyzers are used, supporting some functions of control systems. The physical interface of these instruments is used to identify problems and test cables at the physical layer. A microprocessor with software performs the functions of a higher level.
The development of regulations for the maintenance of a computer network is carried out by specialists from the IT department of the company or invited freelancers. The tasks and goals of the computer network maintenance system are to ensure the operability of the entire network and each of its elements, for which the status is checked, and possible malfunctions are detected and corrected. Only a specialist with sufficient qualifications and the required level of professionalism can develop a computer network maintenance system.
The organization's computer network is intended for the implementation of the following production cycles: data storage in a centralized way, document management, production of reports on the work performed, accounting, operation of other transactional systems, printing to a network printer, Internet access, organizing video and audio communication channels, and much more.
Centralized network management software systems collect data on the state of communication equipment and network nodes, on its traffic, and also manage the network in automatic or semi-automatic mode. Management actions include changing parameters, connecting and disconnecting ports, and more.
Network administrator software, network utilities
To manage computer networks, special programs have been created that allow you to control all network devices from the administrator's computer. For administration in a Windows environment , such programs for system administrators as VPN Client Manager, Winbox, Kerio VPN Client, TeamViewer, Radmin, RMS are intended.
Network Modeling
Before creating a local network, it is necessary to simulate it, during which to determine the optimal topology, select equipment, and determine the performance characteristics and protocols. On the model, you can test the impact of bursts of broadcast requests or try out the collapse mode.
Many settings can be figured out during the simulation. Among them are the peak throughput of network sections, the response time of servers in different modes, the impact of installing new servers on the distribution of information flows, optimizing the topology for bottlenecks in the network, checking the operation of various network equipment, the maximum number of users, routing protocol, the impact of traffic on the network
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