Instance Tree

An instance tree is a hierarchical means of viewing instances which have a logical relationship between them. For example, within Event Horizon, we might have a tree consisting of the following elements (note this list will show definition names, but this is a tree made up on instances based on those definitions, it is not a definition tree, and need not follow the structure used by the Definition Tree.) To view the instance tree, click on the tree icon [] when viewing the details of an instance.

• Location -- physical place such as an office or building

  • Sensor -- a computer used to collect information remotely from a network

    • Subnet -- the subnet used to organize hosts within the network

      • Host -- a host discovered in the network, such as a router

        • Service -- a TCP-based service operating on the host

The following screen shot shows an example of an Instance Tree. Where a tree branch shows a plus sign, click on it to see the instances below in the tree hierarchy. To see the instance itself, click on the magnifier next to the instance name. Clicking on the instance will navigate through the Instance Tree, making the selected instance the root for the view of a new tree. There is no limit to the depth of layers that a tree may use (although the Web browser may be limited by its memory in the number of instances which can be shown on one screen.)

To switch from the tree view back to the detail view for an instance, click on the tree icon []. Sometimes the topmost instance in the tree will have an up arrow icon [], which can be used to navigate to its parent instance within the tree view. Also within the tree view, you will find a button labelled "Show Instance Graph", which will show the current instance, plus its immediate child instances in a graphical view, as shown in the screen shot below: