What are the functions of Network Management?

Network Management involves monitoring and controlling a network system to ensure it operates properly without downtime. The functions performed by a network management system are categorized into several key areas that work together to maintain network reliability, security, and performance.

Fault Management

Fault management is the procedure used to prevent, identify, isolate, and fix malfunctions within a networked system. This reduces downtime by proactively monitoring both active and passive network components. The process involves detecting network failures, diagnosing the root cause, and implementing corrective actions to restore normal operations.

Configuration Management

Configuration management refers to the process of initially configuring a network and then adjusting it in response to changing network requirements. This function is critical because improper configuration may cause the network to perform suboptimally or fail entirely.

The configuration involves parameters at the network interface such as IP addresses, DHCP settings, DNS servers, and other network protocols that ensure devices can communicate effectively.

Performance Management

Performance management involves monitoring network utilization, end-to-end response time, and performance of resources at various points in a network. This includes tracking metrics like bandwidth usage, packet loss, latency, and throughput to ensure optimal network performance.

For example, administrators monitor switched interfaces in an Ethernet network to identify bottlenecks and optimize data flow.

Security Management

Security management refers to protecting network resources and data transmission through comprehensive security measures. It involves implementing access control, authentication, confidentiality, integrity, and non-repudiation services to safeguard against unauthorized access and cyber threats.

Accounting Management

Accounting management keeps records of network resource usage to analyze and determine how to better allocate resources. This includes examining traffic types, usage levels at specific ports, and monitoring user activities such as authentication logs and resource consumption patterns.

Data Logging and Reporting

Data logging records all interactions and events that pass through specific points in the network system. When system failures occur, administrators can review these logs to identify what might have caused the problem and take preventive measures for the future.

Functions Overview

Conclusion

Network management functions work together to ensure reliable, secure, and efficient network operations. These six core functions?fault, configuration, performance, security, accounting management, and data logging?provide comprehensive oversight of network infrastructure and resources.