Discovering Your Enterprise › Discovering Your Network Devices Continuously in Real-time Mode › Discovery Agents › Configure a Discovery Agent to Manage Additional Subnets

Configure a Discovery Agent to Manage Additional Subnets

By default, a Continuous Discovery agent discovers and monitors any newly discovered subnet (added to the MDB by Classic Discovery). You can configure a Discovery Agent to discover and monitor additional subnets by assigning subnets to each agent manually. Workload balancing can be enabled or disabled on the Discovery Manager when you add additional subnets using this method.

Note: You can also discover only a subnet using the dscvrbe command and workload balancing. After the subnet is added to the MDB, workload balancing assigns the subnet to an available agent and the subnet is then monitored by the agent. For more information about the dscvrbe command, see the online CA Reference.

To manually add subnets to a Discovery Agent

1. In the Management Command Center, right-click the agent in the left pane tree, and choose Add Viewer, Properties.

   The Properties notebook for the agent appears.

2. Click the RunTime tab.

   The RunTime page appears.

3. In the SubnetToManage field, add the additional subnets you want the agent to monitor.

   Separate subnets with commas. You can use wildcards to specify subnets. You can also define a range of subnets by separating the range with a hyphen (-). Only one range of IP addresses per subnet is permitted.

   Additional subnets to manage are defined.

4. Close the Properties notebook for the Discovery Agent, right-click the Discovery Manager in the left pane, and choose Add Viewer, Properties from the context menu.

   The Properties notebook appears in the right pane.

5. Click the WLB tab, set the ENABLE_WLB property to true, and close the Properties notebook for the Discovery Manager.

   Workload Balancing is enabled.

6. Stop and restart the Discovery Agent and the Discovery Manager.

   The additional subnets will now be discovered and monitored.

Example: Valid Subnet Filters

Valid subnet filters are as follows:

xxx.xxx.xxx.xxx where xxx is a valid number between 1-254.

*.*.*.* specifies that any subnet should be monitored by the agent.

xxx.xxx.xxx.* specifies that all subnets of xxx.xxx.xxx should be monitored by the agent.

xxx.xxx.xxx.xxx - xxx.xxx.xxx.yyy specifies a range of IP addresses in a subnet that the agent should monitor.

To specify that a range of IP addresses for three subnets should be monitored, use an entry similar to the following entry:

172.16.333.0 - 172.16.333.128, 172.16.334.1 - 172.16.334.128, 172.16.335.1 - 172.16.335.128