15.4.1 Reviewing the requirements
Suppose the NNMi management servers at corporate headquarters, regional site 1, and regional site 2 manage several routers and switches located at their individual sites. For this example, refer to the NNMi management servers as global1, regional1, and regional2, respectively. Suppose you configured these NNMi management servers to discover and monitor critical switches and routers located at their own locations. In such a case, there is no need to reconfigure discovery for the NNMi management servers at any of these sites to use the global network management feature.
- Note
During global network management configuration, you might be tempted to use the nnmbackup.ovpl script to back up one NNMi management server, then use the nnmrestore.ovpl script to restore this backup to a second NNMi management server, then connect both of these NNMi management servers to a regional NNMi management server. Do not do this. Placing the backup data from one NNMi management server onto a second NNMi management server means that both servers have the same database UUID. After you restore NNMi on the second NNMi management server, you would need to uninstall NNMi from the original NNMi management server.
The IT group at the corporate site wants to monitor critical equipment located at regional sites 1 and 2, but they do not want to manage all devices. The following table summarizes the monitoring needs.
Site |
NNMi management server |
Critical switches |
Regional equipment to manage |
|---|---|---|---|
Corporate headquarters |
global1 |
15 Model 3500yl HP ProCurve switches |
All Model 3500yl HP ProCurve switches at all regional sites |
Regional site 1 |
regional1 |
15 Model 3500yl HP ProCurve switches |
Not applicable |
Regional site 2 |
regional2 |
15 Model 3500yl HP ProCurve switches |
Not applicable |
To summarize, the NNMi management server, global1, monitors the corporate headquarters. Two NNMi management servers, regional1 and regional2, monitor each of the regional sites. It is essential to be able to view from corporate headquarters the incidents and device information for the Model 3500yl ProCurve switches located at regional sites 1 and 2. Suppose that, for this example, regional1 and regional2 both manage several common switches located at regional site 1.
- Organization of this subsection
(1) Regional manager and global manager connections
When you configure global network management connections, consider the following information:
NNMi enables you to configure more than one global manager to communicate with a regional manager. For example, if you need a second global manager, global2, to communicate with regional1, NNMi enables you to configure both global1 and global2 to communicate with regional1. For details, see the Release Notes.
Global network management works with one connection layer. For example, the examples in this chapter discuss one connection layer, global1 communicating with regional1 and global1 communicating with regional2. Do not configure NNMi for multiple connection levels. For example, do not configure global1 to communicate with regional1, then configure regional1 to communicate with regional2. The global network management feature is not designed for this type of three-layer configuration.
Do not configure two NNMi management servers to communicate both ways with each other. For example, do not configure global1 to communicate with regional1, then configure regional1 to communicate with global1.