OpManager renders the logical network topology diagram once you discover the networks and network devices. For a better visualization of the physical network connectivity in real networks and the consequences of a failure of a device, network topology map comes handy. To enable automatic layer 2 mapping, post discovery, you will need to specify the seed file so that layer 2 mapping is automatically done. OpManager purely relies on SNMP to represent the connectivity of nodes and links in the network.
This document explains the following:
What is a seed device?
A seed device is the core switch in your network. The switch must have SNMP-enabled so that OpManager is able to query the device and draw the links automatically, showing the connectivity of all the devices on your network. As changes happen to the networks frequently, OpManager allows you to configure an interval (in days) to re-draw the map. For instance, if a change happens once in a week, you can configure OpManager to re-draw the map every seven days.
The map is generated. You can change the layout by selecting the type as Radial Tree, Balloon Tree, Node Link or Custom option for the Layout combo-box on top of the network map. You can also export the map to Visio, or even save it as a business view in OpManager.
It is saved as a business view which you can assign to a user based on his role. You can access this business view from the Maps tab.
Exporting to Visio
Make sure you have Microsoft Visio 2007. Visio can be installed on any of your Windows devices and it need not be on the same server as OpManager. Ensure that you are able to access OpManager Weblcient from the machine where Visio is installed.
Exporting Views from OpManager
Loading the exported maps in Visio