Dependencies or Parent/Child Relationships
Allow devices to be dependent on one another. If a router goes down, the switch behind it will most likely go down or have an error as well.
Forum Discussion
1. In this case, i'm putting instances on a map as vertices. But, it could just as well be devices themselves that are already in monitoring. To set the ERI on a device, all you need to do is create a PropertySource where the data type is set to "ERI Source" and have the PS output in the corresponding format. Each device and/or instance that you want to show up on a topology map needs to have its own ERI.
2. The datasource, in this case, only exists to create the instances with their corresponding ERIs. You don't have to have a DataSource at all if the only vertices you want on the map are devices.
3. For RCA, you would just help LM know which is the root of the depency tree by specifying one of the vertex devices as the entry point.
