In an embodiment, a method comprises using a first hub device: establishing one or more secure connections with one or more spoke devices logically arranged as spokes with respect to a data processing system; generating and sending via a high-speed link a hub probe to a second hub device; in response to determining that the second hub device is nonresponsive, transmitting, to the one or more spoke devices a first communication indicating that the second hub device is nonresponsive; using a spoke device, receiving the first communication indicating that the second hub device is nonresponsive; determining whether the spoke device has established a secure connection with the second hub device; in response to determining that the spoke device has established the secure connection with the second hub device, selecting a third hub device, establishing a secure connection with the third hub device, and communicating with the third hub device.