This object holds the specific list of uplink (external) interfaces that traffic from a given server interface should be restricted to using, letting an administrator pin down which physical fabric uplinks handle traffic from a particular server-facing port rather than letting the switch pick automatically. Administrators configure this when they need deterministic traffic routing for a server interface, such as ensuring a specific server always uses a designated set of uplinks for its Fibre Channel traffic. For example, an admin might set this list to reference a specific uplink interface index so that traffic from a critical server interface is always mapped to only that external interface rather than any available one.