A check condition has been detected on the subchannel.
User response
Check if the connection to the remote device still works. If the CTCM device
is not operational, set it offline and back online. If this does not resolve
the problem, perform a manual recovery. See "Device Drivers, Features, and
Commands" for details about how to recover a CTCM device. If this problem
persists, gather Linux debug data and report the problem to your support
organization.