EMS log reports: netif.linkErrors:error: Excessive link errors on network interface. Might indicate a bad cable, switch port, or NIC, or that a cable connector is not fully inserted in a socket. On a ...EMS log reports: netif.linkErrors:error: Excessive link errors on network interface. Might indicate a bad cable, switch port, or NIC, or that a cable connector is not fully inserted in a socket. On a 10/100 port, might indicate a duplex mismatch.