Documentation forSolarWinds

Subnet List tool

The Subnet List tool in ETS for the Desktop builds a list of network subnets by scanning route tables on a seed router. The target router must have SNMP enabled, and you must know the SNMP community string.

Open the Subnet List tool

  • To launch the tool from the Toolset Launch Pad, locate the Subnet List tool and click Launch.

  • You can add the tool to a tab in the Workspace Studio, and access it from there.

  • To launch the tool from the Windows Start menu:

    1. Click Start > All > SolarWinds Engineer's Toolset.

    2. Right-click Subnet List, click More, and click Run as administrator.

Retrieve subnet lists for your network

  1. Enter the host name or IP address of the router or server.
  2. Enter or select SNMP Credential for a core router.
  3. Click Retrieve Subnets.

Subnet List creates subnet lists by scanning route tables. If subnets have been summarized into a summary route on the router you are scanning, Subnet List cannot discover all your subnets. Direct the tool to another router that does not have routes summarized.

Modify SNMP options for subnet list

Depending on your network infrastructure, you may be required to increase the wait time for SNMP timeout or increase the number of SNMP query attempts. Conversely, if your network speed is optimal, you may be able to shorten the SNMP timeout.

  1. Click File > Settings.
  2. Adjust the settings to reflect your network environment:

    • SNMP Timeout: The number of milliseconds Subnet List should wait for an SMNP reply before assuming the packet is lost and trying again.

    • SNMP Retries: The number of times Subnet List should retry an SNMP query before considering the device down. Set this to two or higher.

Export, print, and copy subnet list results

After querying your router, you can transfer the discovered information about subnets to other tools by exporting or by copying and pasting. You can also print the discovered information.

To export subnet list results:

  1. Click File > Export.
  2. Select the information to export.
  3. Select the export format.
  4. Click OK.
  5. Name the path for the exported information.
  6. Click Save.

To copy subnet list results, you can copy the entire result set or a selected IP address. Click Edit and select either Copy or Copy All.

To print subnet list results, click File > Print, and then select the information to print.