On the System Manager web console, click Services > Inventory.
In the navigation pane, click Manage Serviceability Agents > Serviceability Agents.
In the Agent List section, select one or more agents that you must activate.
Click Activate.
The system activates the SNMPv3 functionality in the remote serviceability agent that you selected. If the system does not activate the SNMPv3 functionality, refresh the Web page and repeat Step 3 and Step 4.