Network fault management is the process of detecting, isolating, and resolving faults or errors that occur in a network infrastructure.

A fault in network management refers to an abnormal condition or failure that occurs within a network. It can cause disruptions to network services and applications, and network management systems are designed to detect and diagnose faults, allowing administrators to take corrective action to restore normal network operations.

Common network faults include connectivity issues, slow performance, network congestion, and hardware failure. These faults can be detected through various methods such as monitoring network traffic, running diagnostic tests, analyzing logs, and setting up alerts for abnormal behavior.

Network fault management includes features such as real-time monitoring, alerting, and event correlation among others. These features can help detect network faults, pinpoint their exact location, and provide quick resolutions to minimize network downtime.

Network alarms and events are notifications that are triggered when a fault or error is detected in a network. They are used to provide real-time alerts and notifications of network issues.

A network alarm is typically a critical notification that requires immediate attention, such as an interface going down or a device failing. A network event, on the other hand, is a more general notification that may not require immediate action, such as a change in network traffic patterns or an increase in CPU utilization. However, both alarms and events can be useful for detecting and resolving network issues, and should be monitored closely to ensure optimal network performance.

Event correlation is a technique used in network management to identify the root cause of problems by analyzing multiple events that occur within a system. It helps to reduce the noise generated by the large volume of events and allows operators to focus on critical issues that require immediate attention. Essentially, event correlation helps to identify patterns in events and alarms in order to diagnose and resolve network issues more efficiently.

Setting up thresholds and triggers for network alarms is essential since it allows for quick identification of changes from typical network activity. Early detection assists in preventing serious problems, prioritizes responses, and guarantees effective resource allocation for quick resolution.