Configuring Passive Monitor Listeners
A Passive Monitor Listeners listens for an event to occur and then notifies WhatsUp Gold. This lets you get notification of an event when it occurs, rather than polling for all event types. The Passive Monitor Listener is solely responsible for how it monitors its events. This means that the server could listen for network traffic or application specific events.
WhatsUp Gold is installed with three Passive Monitor Listeners:
- . A trap is an unsolicited SNMP message (packet) sent from a device to indicate a change in status, such as a router indicating one of its interfaces went down or a printer indicating that it is out of paper.
- . A Syslog monitor is used to examine Syslog messages forwarded from other devices for a specific record and/or specific text within a record. Usually Syslog messages are forwarded from the Syslog on a system that runs UNIX, but they can also come from non-UNIX devices as well.
A Syslog message consists of a priority and a text payload. The text message could contain anything you want permanently logged, such as a device failure, or a failed attempt to log in to the system. The only way to identify different type of syslog messages is to configure a regular expression in the passive monitor definition.
- . This monitor can capture any Windows Event Log entry, such as a service start or stop, if there was a logon failure recorded, and other log entries.
Before you can configure Passive Monitors, you must configure listeners.
To configure a listener:
- In the WhatsUp Gold console, select . The Program Options dialog opens.
: If the Windows SNMP Trap Service (located in > ) is running on the WhatsUp Gold console PC, you should stop the service. This is a precaution to prevent any conflict with the WhatsUp passive monitor listener.
- Click . The Passive Monitor Listeners display in a list.
- Select the listener you want to configure, then click . The configuration dialog opens.
- Select the appropriate settings based on the listener you are configuring. For more information about the Passive Monitor Listener options, refer to the Help.
- Click to save changes.