Managed Components

A managed component is hardware or software that provides a subagent. For example, database servers, operating systems, routers, and printers can be managed components if they provide subagents.

Event Notification

When an event occurs that affects the performance or availability of a managed component, the SNMP Network Manager can alert you to that condition. The following list describes some of the decisions that you can make about event notification:

• Define the conditions that should be monitored.
• Specify how frequently to poll for each condition.

  When you determine the polling frequency, you must balance the need for prompt notification of an undesirable condition and the burden that polling puts on the network.

• Specify how the SNMP Network Manager notifies you of an event.

  You might choose to have an icon blink or change colors when an event occurs.

Data Requests

A data request can be a one-time request or a periodic request. A one-time request is useful for comparing the data for two managed components. Periodic requests are useful for accumulating statistical information about a managed component.

Traps

You can configure the SNMP Network Manager to detect extraordinary events and notify you when they occur. The following list describes some of the decisions that you can make about traps:

• Define the conditions that should generate a trap.
• Specify how the SNMP Network Manager notifies you of a trap.

  You might choose to have an icon blink or change colors when a trap occurs.

• Specify how the SNMP Network Manager responds to a trap.

  The SNMP Network Manager can query the managed component to determine the cause and extent of the problem.