Previous Topic: Monitoring Architecture

Next Topic: How Stateful Monitoring Works

CA SystemEDGE User Guide › Concepts › Monitoring Architecture › SNMPv2 Row Status

SNMPv2 Row Status

SystemEDGE uses the concept of row status introduced with SNMPv2 to manage the creation, activation, and maintenance of rows (or entries) in any of the monitoring MIB tables. The RowStatus textual convention manages the creation and deletion of rows and is the value of the SYNTAX clause for the status column of a conceptual row:

RowStatus ::= TEXTUAL-CONVENTION

STATUS 	current

Each entry that you define in one of the monitoring tables becomes a row in the table and has a row status value. The row status determines whether the row is active with accessible data. The available values for row status are as follows:

active

Indicates that the row is available for use by the managed device. A monitor entry must have a row status of active for the agent to carry out the monitoring instructions in the entry. By default, when you create an entry with valid information, the row status is automatically set to active.

notInService

Indicates that the row exists in the agent, but is unavailable for use by the managed device.

notReady

Indicates that the row exists in the agent, but is missing the necessary information for use by the managed device.

createAndGo

Supplied by a management station wanting to create a row and to have it available for use by the managed device.

createAndWait

Supplied by a management station wanting to create an instance of a conceptual row but not to have it available for use by the managed device.

destroy

Supplied by a management station wanting to delete a row.

You can supply any of these statuses during row creation except for notReady and destroy. You use the destroy status to delete an existing row. Only the following three values are returned in response to a manager Get request:

active

Indicates that the row is available for use by the managed device.

notInService

Indicates that the row is not available for use by the managed device, though the agent has sufficient information to make it available.

notReady

Indicates that the row is not available for use by the managed device because the agent lacks sufficient information.

Note: For more information about controlling the row status of a monitor entry, see the monitoring chapters in this guide. For more information about the RowStatus textual convention, see RFC 1443: Textual Conventions for SNMPv2.