By default, domains use any available connector without evaluating the network topology. If the communication with a current connector is interrupted, the domain automatically selects another available connector to continue operation. To give you more control over which connector different computers use, you can map specific subnet patterns to specific connectors. Domain computers can then use the globally-defined network topology to identify the closest connector available and will use the next closest available connector if the communication with the closest connector is interrupted.
Using subnet grouping with domains
If you organize systems by grouping them into domains, you can optimize the connector selection by using the domain as another layer of filtering to choose a connector. Using domains within subnet groups is more efficient than using the subnet grouping without any additional filtering.
When a connector is required to perform an operation for any system, the connector selected is determined by doing the following:
- If the computer is configured to use a connector based on the subnet group and the system address is defined using the system IP address, the IP address to subnet mapping is used to select the connector.
- If system address is defined using a fully-qualified domain name (FQDN) and not the IP address, the domain setting is used to select the appropriate connector for the domain.
- If the domain is not explicitly set for the system but the domain exists in the Privileged Access Service, the domain portion of the system address is used to select the appropriate connector.
Using the domain setting with subnet mapping gives you the best combination of performance and failover support in most cases. However, there are circumstances in which you might prefer to specifically designate the connectors individual domains should use. For example, if the “closest” connector in the network topology has bandwidth or latency issues, you might want to designate only one or more specific connectors for an individual domain.
If you want to specify the connectors for an individual domain, you can do so when viewing the details for the domain. Domain-specific settings take precedence over any global connector subnet mapping you have configured. Additionally, if you set system-specific connector settings, those would take precedence over any other domain-specific or subnet mappings that you may have configured.
To specify the connectors to use for a domain:
- In the Admin Portal > Resources > Domains to display the list of domains.
- Select the domain to display the domain details.
- Click Connectors.
- Select Choose, then select the specific connectors to use for the domain from the list of available connectors.
- Click Save.