Discovery profiles specify how inventory discovery operates. As an administrator, you can use the CA Performance Center user interface or Data Aggregator REST web services to manage discovery profiles.
Within a discovery profile, you specify the IP addresses, IP address ranges, and host names for which you want to discover devices. You also specify an IP domain. You can only specify one IP domain for each discovery profile you create. Newly discovered devices will be created within that IP domain.
When multiple Data Collector hosts are deployed in one IP domain, each Data Collector issues a discovery request to that device.
When more than one Data Collector can contact the same device, a specific Data Collector is selected to monitor the device. An algorithm, which is based on load balancing, determines this selection.
IP domains are also necessary for monitoring tenant environments with overlapping IP addresses. One tenant can have one or multiple IP domains. If a tenant has overlapping IP addresses, there must be multiple IP domains in the network. Overlapping IP addresses are handled through IP domains.
IP domains are created in CA Performance Center. Data Aggregator becomes aware of new IP domains when manual or automatic synchronization occurs.
The discovery process attempts to distribute the devices across the available Data Collector instances, but this process does not take into account which devices a Data Collector instance is currently monitoring.
Note: For more information about creating and synchronizing IP domains, see the CA Performance Center Administrator Guide.
Discovery profiles are only accessible by users within the tenant space that the discovery profile was created in. A user that is assigned to the 'Default Tenant' space can run a discovery using a discovery profile that exists in the 'Default Tenant' space and can see the results of that discovery.
Therefore, it is important to be logged in as, or be administering, the correct tenant before you create a discovery profile.
Note: For more information about creating and administering tenants, see the CA Performance Center Administrator Guide.
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