A network access unit used for multi-dwelling units (MDU). It provides Ethernet and IP services and optionally VoIP or CATV services; has multiple broadband interfaces on the user side and optionally POTS ports or CATV RF ports.
This topic describes how to confirm if this is damaged and troubleshoot the fails in MDU ports.
The MDU port is faulty in the following conditions:
◾Run "display port state all" command in the ETH mode on the MDU to query the activation status (Active State) of the Ethernet port. The Ethernet port is in the deactivated state (deactive).
◾Run " display port state portid" command in the ETH mode on the MDU to query the link status (Link) of the Ethernet port. The Ethernet port is in the offline link state (offline).
◾Run "display port state portid" command in the ETH mode on the MDU to query the duplex mode, rate, and network cable adaptation mode of the Ethernet port. The duplex mode, rate, or network cable adaptation mode does not match that of the user terminal.
Troubleshooting:
1. Run the undo shutdown portid command to activate the port, and check whether the activation status of the Ethernet port is activated (activated).
2 .eck the quality of the physical line between the ONU and the user terminal, that is, whether the connector is loose or the physical line has deteriorated. If so, reconnect the connector or replace the physical line. Then, check whether the link status (Link) of the Ethernet port is online (online).
3. Change the Ethernet port configurations, ensuring that the configurations are consistent with those of the user terminal.
