Documentation forServer & Application Monitor

Discover your servers and applications in SAM

Discovery is a term that describes how the Orion Platform identifies application servers and applications. Before you begin:

  • Ensure that you determine what to monitor.
  • Enable Windows devices for WMI.
  • Enable the networking devices you want to monitor for SNMP.

Watch this video about Discovery.

The first time you run the Discovery Wizard (also called the "Network Sonar Wizard"), SolarWinds recommends adding a limited number of application servers, including Exchange, IIS, SQL, Linux, and Unix. The examples in this guide focus on monitoring IIS and the operating system of your application server, but the same steps apply to monitoring any application.

  1. If the Discovery Wizard does not start automatically after configuration, click Settings > Network Discovery.
  2. Click Add New Discovery, and then click Start.
  3. On the Network panel, if this is your first Discovery, add a limited number of IP addresses.

    As you scale your implementation, you can use the following scanning options.

    IP Ranges

    Use this option when you want the Orion Platform to scan one or more IP ranges.

    If you have many IP ranges to scan, consider adding multiple Discovery jobs rather than including all ranges in a single job.


    Use this option to scan every IP address in a subnet. SolarWinds recommends scanning at most a /23 subnet (512 addresses max).

    Scanning a subnet returns everything that responds to ping, so we recommend only scanning subnets where most devices are objects you want to monitor.

    IP Addresses

    Use this option for a limited number of IP addresses that do not fall in a range.

    Since a network discovery job can take a long time to complete, SolarWinds recommends using this option when you are first starting out.

    Active Directory

    Use this option to scan an Active Directory Domain Controller.

    Using Active Directory for Discovery is particularly useful for adding large subnets because Orion can use the devices specified in Active Directory instead of scanning every IP address.

  4. The Agents panel appears. The QoE agent monitors packet-level traffic. If there are any nodes using agents, select the Check all existing nodes.

    This setting ensures that any agents you deploy, including the one on your Orion server, are up-to-date. If there are no nodes using agents, you can leave this option unchecked.

  5. On the Virtualization panel, to discover VMware vCenter or ESX hosts on your network, enter the credentials, and click Next.
  6. On the SNMP panel, to monitor an SNMP-enabled device, enter the credentials, and click Next.
  7. On the Windows panel, to discover WMI or RPC-enabled Windows devices, click Add New Credential and provide the required information.

    SolarWinds recommends that you monitor Windows devices with WMI instead of SNMP.

  8. On the Monitoring Settings panel, SolarWinds recommends manually setting up monitoring the first time you run Discovery so you can review the list of discovered objects and select what you want to monitor. Otherwise, you can configure Discovery to automatically start monitoring objects it finds.

  9. On the Discovery Settings panel, click Next.
  10. Accept the default frequency and run the Discovery immediately.

    Discovery can last from 5 minutes to several hours, depending on the number of servers involved.

If the status of a node remains Unknown after Discovery, see Troubleshoot nodes and interfaces that are Unknown.