The 12X controller has failed. For I/O loop connections, all I/O enclosures on this loop will be in a failed state. For Host Channel Adapter (HCA) connections, all HCA connections on this 12X Fabric will be in a failed state. Work with your service provider to collect error logs. Then work with the FRU list in the Serviceable Event View if there is one, otherwise, use the FRU list documented here to determine the parts to exchange.