Managing subnets

Article:HOWTO44294  |  Created: 2011-03-11  |  Updated: 2011-03-11  |  Article URL
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How To


Managing subnets

You need to create all the subnets in your organization and assign them to the appropriate sites. You can resynchronize subnets when necessary and delete any subnets that no longer exist.

Subnets can be determined from basic inventory data, imported from Active Directory, or added manually. You can run a subnet import rule to automatically collect the subnet information from Active Directory.

Subnets are always suffixed with the number of bits that are set in the network mask, for example, The subnets are always displayed in a hierarchical tree. Resource scoping applies, so you can see only the subnets that contain resources to which you have access.

You need to assign each subnet to the appropriate site. By default, any encompassed subnets (a subnet whose IP range is wholly contained within another subnet) are automatically assigned to the same site. However, you can manually override subnet encompassment by explicitly assigning an encompassed subnet to a different site. By default, encompassed subnets are displayed under their parent subnets in the left pane. However, when an encompassed subnet is manually assigned to a different site from its parent, it is displayed under the site to which it is assigned.

Any site servers on a subnet are automatically assigned to the same site as the subnet. This assignment is not broken if you manually assign a site server to a different site. A site server can be manually assigned to any number of sites, in addition to the site that it serves through its subnet assignment.

To manage subnets

  1. In the Symantec Management Console, in the Settings menu, click Notification Server > Site Server Settings.

  2. Configure the subnets to suit your requirements.

    You can do any of the following:

    Create a new subnet

    In the left pane, click New > Subnet.

    See Creating a new subnet.

    Delete a subnet

    In the left pane, select the subnet that you want to delete, and then click Delete.

    If you delete a subnet that you created manually, it is deleted permanently. However, any subnets that were imported from basic inventory or from Active Directory are restored when the data is refreshed.

    Assign a subnet to a site

    On the Subnets page, select the appropriate subnet, and then click Assign to Site.

    In the Site Selection window, select the site to which you want to assign the subnet.

    Resynchronize subnets

    On the Subnets page, click Resynchronize Subnets.

    Notification Server refers to the CMDB for the current subnet information. It reads the subnet assignment that is included in the results of the latest Agent Inventory scan. Notification Server then updates the list of subnets accordingly.

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