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Home > Success Center > Network Configuration Manager (NCM) > NCM Documentation > NCM 7.8 Administrator Guide > Get started > Add nodes with Network Discovery

Add nodes with Network Discovery

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Created by Caroline Juszczak, last modified by Anthony.Rinaldi_ret on Oct 03, 2016

Views: 970 Votes: 1 Revisions: 4

Network Discovery is particularly useful when you have multiple devices that you want to add for configuration management. At first, SolarWinds recommends scanning a small subnet or a few individual IP addresses.

  1. Click Settings > Network Discovery.
  2. Click Add New Discovery, and click Start.
  3. To discover devices on your network within a specific range of IP addresses:
    1. In the IP Ranges section, click Add Range and provide a Start and End Address for the range. Scheduled discovery profiles should not use IP address ranges that include nodes with dynamically assigned IP addresses (DHCP).
    2. Repeat to add ranges, and then click Next when finished .
  4. To discover devices connected to a specific router or on a specific subnet of your network:
    1. In the Subnets section, click Add > Subnet, and enter a Subnet IP Address. Repeat to add subnets.
    2. If you want to discover devices using a seed router, click Add > Seed Router, enter the IP address of the Router, and click Scan Router.
      • Repeat this step for each additional seed router you want to use.
      • Network Sonar reads the routing table of the designated router and offers to discover nodes on the Class A network ( mask) containing the seed router and, if you are discovering devices for an SolarWinds NPM installation, the Class C networks ( mask) containing all interfaces on the seed router, using the SNMP version chosen previously on the SNMP Credentials page.
      • Networks connected through the seed router are not automatically selected for discovery.
    3. When finished, click Next.
  5. If you already know the IP addresses or hostnames of the devices you want to discover:
    1. In the IP Addresses section, click Add IP Address and enter the IPv4 or IPv6 addresses or hostnames of the devices. Type only one address or hostname per line.
    1. Click Validate to confirm that the provided IPv4 addresses and hostnames are assigned to SNMP-enabled devices.
    2. When finished, click Next.
  6. If you want to import nodes by querying your Active Directory Domain Controllers for registered devices, click Add Active Directory Domain Controller to Query. Choose existing credentials or add the credentials to access the Active Directory server.
  7. On the Agents tab, decide whether to poll for updates on these nodes, and click Next.
  8. On the Virtualization tab, decide whether to poll for VMware, and click next.
  9. On the Config Management tab, Add SSH or Telnet credentials, and click Next.
  10. On the SNMP tab, specify SNMP credentials for discovery:
    1. If the devices on your network do not require community strings other than the default public and private strings provided by SolarWinds NCM, click Next.
    2. If any of your network devices require community strings other than public and private provided, or if you want to use an SNMPv3 credential, add the required SNMP credential for each community string:

      To speed up discovery, highlight the most commonly used community strings on your network, and then use the arrows to move them to the top of the list. NCM supports SNMPv3 with AES-256.

      1. Click Add New Credential.
      2. Select the SNMP Version, enter the required information, and clickAdd.
      3. Click Next.
  11. On the Windows tab, click Add New Credential to add Windows credentials for WMI collections.
  12. Set polling and monitoring settings, and click Next.
  13. On the Discovery Settings tab, edit the Details, Retries, and Timeouts.
    1. Name and Description: distinguishes the current discovery profile from other profiles you may use to discover other network areas. This Description displays next to the Name in the list of available network discovery configurations on the Network Sonar view.
    2. SNMP Timeout: If you are encountering numerous SNMP timeouts during Network Discovery, increase the value for this setting. A recommended value is at least more than double the time it takes a packet to travel the longest route between devices on your network.
    1. Search Timeout: The amount of time Network Sonar Discovery waits to determine if a given IP address has a network device assigned to it.
    1. SNMP Retries: The number of times Network Sonar Discovery retries a failed SNMP request, when a response is not received within the time set in SNMP Timeout.
    1. Hop Count: If the Hop Count is greater than zero, Network Sonar Discovery searches for devices connected to any discovered device. Each connection to a discovered device counts as a hop.
    1. Discovery Timeout: The amount of time, in minutes, Network Sonar Discovery is allowed to complete a network discovery. If the Discovery Timeout value is exceeded, the discovery is terminated.
  14. The default Frequency for discovery is Once, which starts immediately. If you want the discovery to run on a regular schedule, select Hourly, Daily, or Advanced as the Frequency, and click Discover.
  15. If you do not want to run the network discovery, select No, Don't Run Now, and click Save or Schedule, depending on the Frequency selection.


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