Use this page to define or change the associations between the components of the system.
Note: This page only functions properly with Internet Explorer 5.5 or greater on the Windows operating system. This page also requires Adobe SVG Viewer 3.0. If either of these is not installed on the Windows operating system you are currently using, the page that appears instead enables you to create associations within a text-based tabular interface, rather than a graphic interface. For information on using this tabular interface, see Providing Associations in a Non-SVG Environment.
The System Topology page enables you to see all components, represented as icons, as well as associations, represented as links between components. After you have customized the topology to suit your needs, you can subsequently view the overall status of the components in your system by accessing the System Topology page from the main Systems page.
Associations show the relationships (that do not necessarily imply dependencies) between components within the system. Associations are depicted visually as arrow links. If you are creating a topology for the first time, you will not initially see any associations. A component is considered unassociated if you add it to the System without associating it to another component. For both layout modes discussed below, unassociated components are displayed below associated components.
When you first access this page, the default is to display the components you defined in the Create System: Components page. Consequently, you must first add the components in the Components page before they can appear in this page. In the default view, all components of a particular type appear together, and they are sorted alphabetically by their name. You can click the Legend link below the Selection Details window to see a list of all possible icons and statuses.
You can change the default presentation and create or edit associations by using the tools explained in the following sections.
You should first select the Layout Mode located at the bottom of the page. If you select Automatic, Enterprise Manager places the icons in the topology graph according to the following default rules:
In a connected group of components, components are positioned at different levels according to the link direction.
Connected components are positioned above unconnected components.
Unconnected components are positioned at the bottom of the main window. If multiple unconnected components exist, they are positioned on multiple rows with approximately the same number of rows and columns.
If you select Manual, this enables the drag-and-drop functionality, which allows you to place icons anywhere in the workspace. After selecting the Layout Mode, click Preview to enable the mode.
If you want a background image for the main and overview windows, select an appropriate SVG, GIF, JPG, JPEG, or JPE file. The file must be less than 256 KB in size or an error will occur. For example, if you are creating a topology to represent components in branch offices worldwide, you can choose the Manual layout mode, select a map as the background image, then click Preview to see the background image. You can then place your components in their corresponding geographical locations.
Use the Overview window to set the zoom level for the main window. The Overview window always displays the entire workspace for the topology; the zoom setting changes the size of the view selector (the blue box) and the view in the main window. Drag and drop the view selector in the Overview window to choose what to display in the main window.
To create associations, first select the source component, then Shift-click to select the components you want to associate with the first. After you have selected your components, right-click any highlighted icon and choose Add Association. An arrow now appears that connects the source component to all other components you selected.
To delete associations, select the association link or links, right-click, and choose Delete Association.
Note: Your system can contain components that have their own subcomponents, such as redundancy groups and other systems, but you cannot create associations between subcomponents in the topology viewer. You can only create associations between top-level components.
Use the following key and mouse combinations in the main window to change the topology view:
| Desired Task |
Action |
|---|---|
| Move a component |
Double-click the component, then drag to move it. |
| Move the entire topology image | Press Alt and the left mouse button, then drag the mouse in any direction. |
| Zoom in or out | Select the target icon, right-click, and select Zoom In, Zoom Out, Zoom 100%, or Fit To View as needed. |
| Zoom in on a location | Move the cursor to the location, press Ctrl, then click. |
| Zoom out on a location |
Move the cursor to the location, press Ctrl+Shift, then click. |
| Zoom in on a specific region | Press Ctrl and the left mouse button, then drag the mouse. When you release the mouse button, the rectangle drawn by the mouse movement zooms in. |
| See a brief component status | Move the cursor over the target component icon to display the component type and full name of the component. |
| See an Association Description | Hover the cursor over the tip of an association arrow to display the "From" (source) and "To" (associated) components for the association. |
If you select a component in the main window, the Selection Details window displays the target type and name for that component. Click a component name to go to that component's home page.
Right-click in the main window and select Save As to save the topology graph as an SVG file. You can later view the topology separately, print it out, or embed it in other files that accept the SVG format. For example, you can prepare a PDF report of service or system performance and embed the topology in the report.
Related Topics
About Privileges for System Targets
About Using the Topology Viewer
Creating, Editing, and Viewing Systems
Creating, Editing, Viewing System Topology
Providing Associations in a Non-SVG Environment
Enterprise Manager Information Roadmap
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