3.3 BridgeheadChange

Use this Knowledge Script to monitor changes to the bridgehead roles in an Active Directory forest. This script connects to the local Active Directory database of the target server and retrieves the list of bridgehead servers. In addition, this script raises an event if new bridgehead servers are added or existing bridgehead servers are run.

By default, Active Directory can move bridgehead servers as needed. Many large organizations manually designate which domain controllers will serve as bridgehead servers because there is significant load placed on bridgehead servers. If your organization has defined bridgeheads manually, use this script to report all bridgehead server changes. Otherwise, use this information to correlate with a condition of high CPU utilization. If they match, the bridgehead function is the cause of the high CPU load.

3.3.1 Resource Objects

Active Directory domain controller

3.3.2 Default Schedule

The default interval for this script is Every 30 minutes.

3.3.3 Setting Parameter Values

Set the following parameters as needed:

Parameter

How to Set It

General Settings

Raise event if job fails

Event severity when job fails

Set the severity level, from 1 to 40, to indicate the importance of an event in which the BridgeheadChange job fails. The default is 35.

Monitor bridgehead server changes

Enable job delegation?

Select Yes to enable the delegation of the job to another server where appropriate. If enabled, the job runs on the computer that holds the server role (Domain Master or Schema Master) that you selected for the Delegate forest-wide monitoring to the... parameter. The default is unselected.For more information, see Section 3.1, AD Knowledge Script Job Delegation.

Delegate forest-wide monitoring to the

Select the server role to delegate the job to: Domain Master or Schema Master. By default, the job is delegated to the Domain Master.

Raise event when DC assumes this role?

If you enabled job delegation, set to Yes to enable events if the DC assumes the server role you selected for the Delegate forest-wide monitoring to the... parameter. The event message indicates that the monitored computer has assumed the selected role. The default is Yes.

Event severity when DC assumes this role

Set the severity level, from 1 to 40, to indicate the importance of an event in which the DC assumes the role you selected for the Delegate forest-wide monitoring to the... parameter. The default is 30.

Raise event when DC relinquishes this role?

If you enabled job delegation, set to Yes to enable events if the DC gives up the server role you selected for the Delegate forest-wide monitoring to the... parameter. The event message indicates that the monitored computer has relinquished the selected role. The default is Yes.

Event severity when DC relinquishes this role

Set the severity level, from 1 to 40, to indicate the importance of an event in which the DC relinquishes the role you selected for the Delegate forest-wide monitoring to the... parameter. The default is 30.

Event Notification

Raise event if changes to bridgehead servers are detected?

Select Yes to raise an event if changes to the bridgehead servers are detected. The default is Yes.

Event severity when changes detected

Set the severity level, from 1 to 40, to indicate the importance of an event in which changes to the bridgehead servers are detected. The default is 25.

Data Collection

Collect data for changes to bridgehead servers?

Select Yes to collect data for charts and reports. If enabled, data collection returns the number of bridgehead servers for the interval. The default is unselected.