Disconnect behaviors

Overview Copied

The Netprobe behavior and configuration follows specific behaviors, depending on its Gateway connection.

Disconnection behavior Copied

If a Gateway to self-announcing Netprobe (SAN) connection is disconnected, either due to network failure or one party dropping the connection for one of the reasons stated above, then the following rules apply:

• The Netprobe waits a configurable timeout for the Gateway (or a hot-standby Gateway) to reconnect. Once this timeout is exceeded, the SAN reverts to polling all the Gateways specified in its Setup File and look for another Gateway to announce itself to.
• If a connection is disconnected, then the Gateway keeps the SAN in its directory for a configurable timeout, and attempts to reconnect. Once this timeout is exceeded, the Gateway removes the SAN from the live directory and ceases attempting to connect to it.
• If a connection is rejected by the Netprobe, then the Gateway immediately removes the Netprobe from the live directory and ceases attempting to connect to it.

When a Netprobe is suspended, its dataviews in Active Console will disappear. The data item icon will display a warning sign containing the “Pause” sign in Active Console. These icons will be visible in the entities view, probes view, state tree and list-views containing these data items. See Icons and Format Strings. For more information on Netprobe disconneciton behavior, refer to the Frequently Asked Questions section in Data Quality.

Disassociate Probe Command Copied

The Disassociate Probe command can be used to remove a SAN from a Gateway. This command is available on SANs with a connection status that is not Up or WaitingForProbe.

Only use this command when a SAN has failed, or has moved to another Gateway but the original Gateway was not notified. This can happen when there is a load-balancer between the SAN and the Gateway, or the connection was suspended.

Caution

If the SAN is up when this command is used, it may connect to a different Gateway. If the SAN does connect to a different Gateway, any snooze or user assignment information is lost.

This command is not available on imported SANs.

Hot Standby Gateways Copied

Where Hot Standby Gateway pairs are used, both should be specified in the Netprobe Setup File. A non-active Gateway will refuse to accept the Netprobe so there is no risk of the Netprobe choosing a secondary Gateway while the primary is still up.