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IP domains let you address potential IP address conflicts. Domain identifiers indicate that two managed items that otherwise appear as duplicate IP addresses are actually two different managed items. For example, a router with a single IP address could have multiple interfaces, each belonging to a different enterprise. The DNS identity of each interface would determine its IP domain. Data from items in the domain would be reported for a single tenant corresponding to the interface owner.
The domain dimension lets CA data sources function in a service-provider environment. The same software monitors multiple networks as separate entities. The domain lets data collectors associate managed items and data with the appropriate service provider customer, or tenant.
Domain monitoring is enabled for each data source as soon as it is registered. However, domain identifiers are not visible in the data sources until at least one custom IP domain definition has been created in CA Performance Center. The following managed item types are associated with the Default Domain once domain monitoring is enabled:
The data sources that monitor these item types report up a domain identifier and other properties during synchronization with CA Performance Center. A data source can associate an item with a domain by including a domain ID property. Any item whose domain ID is not reported is automatically placed in the Default Domain.
CA Performance Center users with the Administrator role can create custom IP domains. They are sent down to the data sources during synchronization, where they are available for use during data collection configuration. Domain definitions are shared among data sources that are registered to the same CA Performance Center instance.
In the Groups tree, the Domains group is contained within the Inventory group, which is itself a subgroup of the Tenant. The Domains group includes the Default Domain and any custom domains that you have created.
Items that are not assigned to a custom domain in a data source are associated with the Default Domain. This assignment is transparent to users who are not using custom IP domains to identify monitored traffic.
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