The disclosure provides an interconnecting node for interconnecting first and second protected domains, the second protected domain comprising a working path and a protection path for linear protection in a network for traffic forwarding between two end-nodes. The interconnecting node comprises at least one interface for receiving first monitoring information from the first protected domain, a monitoring unit for detecting an isolation condition of the interconnecting node within the first protected domain based on the first monitoring information, and generating second monitoring information to be transmitted to the working path so that a failure in the working path is detectable based on the second monitoring information at a far-end node of the working path. If an isolation condition is detected, the monitoring unit starts transmitting alarm indication information to the working path for suppressing at the far-end node an alarm reporting regarding a failure in the working path.