HP Netsight manual Using the Subnets Window

Discovering Nodes

Using the Subnets Window

With the Subnets window, you can define and view subnet entries which can be used in Discover scripts. The Subnets window is accessed by selecting View—>Subnetsfrom the NetSight Element Manager primary window menu bar. Any subnet entries that appear in the Subnets window will also appear in the Subnets group box on the Device page of the Discover Properties window, and vice versa (see Defining and Selecting Subnets, page 3-7).

The Subnets window will list subnet entries for any subnet on which an IP or Subnet Discovery has been previously performed. For example, if you have previously performed an IP Discovery using the IP Address range of 132.177.118.0 —> 132.177.118.100, the Subnets window will contain an entry for the 132.177.118.0 subnet (assuming that this is a Class B network, with a subnet mask of 255.255.255.0).

If you have manually added a device to a view or a map, a subnet entry will be listed for that device’s subnet as well. For example, if you manually add a device with an IP address of 132.177.118.24 to any of your views or maps, the Subnets window will contain an entry for the 132.177.118.0 subnet (assuming that this is a Class B network, with a subnet mask of 255.255.255.0).

This subnet information is used to determine the map hierarchy created via the automatic

TIP subnet mapping feature; for more information on this feature, see Generating Submaps Automatically in Chapter 6, Creating Network Maps

When defining subnet entries using the Subnets window, you use the same Subnet Properties window that is used in the Discover application when defining subnets for use in a Discover script.

To launch the Subnets window from the NetSight Element Manager primary window:

1.Select View—>Subnetsfrom the primary window menu bar. The Subnets window, Figure 3-20, opens.

Using the Subnets Window 3-27