An Oracle SDN environment is one or more of the switches connected at the IB level. You can display one or more Oracle SDN environments, depending on how your hardware is connected:
If you have pairs of hardware platforms that are not interconnected, you have multiple, separate environments in your data center. As a result, you will see multiple environments listed in the Oracle SDN Summary.
If you have two pairs of hardware platforms that are interconnected into one shared environment, you will see one environment listed.
For fabrics managed by Oracle Fabric Manager 4.x software, Oracle Fabric Manager assigns a specific ID for the environment. The ID is a randomly generated string of integers that always creates a unique ID, even if the current deployment will not be supporting Oracle SDN. As an option, you can rename the Oracle SDN fabric ID string to something more understandable.