Per-interface electronic device protection switching systems and methods
are disclosed. An electronic device and each communication line interface
provided in the device are monitored, and device information and
interface information are generated. The device and interface information
is periodically sent to a mate electronic device in a protection group to
which the electronic device belongs. Mate device information and mate
interface information are also received by the device from the mate
device. Activity states of each device interface are controlled based on
at least one of the device information, the interface information, the
mate device information, and the mate interface information.