The port hardware detects a loss of connectivity reported by the remote extremity of the link connected to the port. This indication shows that though the cabling is at least partially operative, the information transmitted through the port may not arrive in all its integrity at the other side of the link. It is recommended that the network administrator check the link in order to detect the origin of the problem and prevent its aggravation. (Bit 10 in the genPortFaultMask set to on)