ZyXEL Communications VLC1324G 3.3 VDSL2 Data Transmission, 3.4 Local Server, 3.5Data Rate

Chapter 3 VLC Troubleshooting

The VDSL2 link is up, but data cannot be transmitted.

Table 11 VDSL2 Data Transmission Troubleshooting

STEPS	CORRECTIVE ACTION
1	Check the line card’s port isolation settings.
	If the subscriber is having problems with video or other high-bandwidth services, make
	sure the line card’s VDSL2 port’s data rates are set high enough.

2	Check the VLAN configuration.

3	Ping the MSC from the computer behind the VDSL2 modem or router.
	If you cannot ping, connect a VDSL2 modem to a VDSL2 port (that is known to work).
	If the VDSL2 modem or router works with a different VDSL2 port, there may be a problem
	with the original port. Contact the distributor.
	If using a different port does not work, try a different VDSL2 modem or router with the
	original port.

The computer behind a VDSL2 modem or router cannot access a local server connected to the line card.

Table 12 Local Server Troubleshooting

STEPS	CORRECTIVE ACTION

1Refer to Section 3.3 on page 32 to make sure that the subscriber is able to transmit to the line card.

2Make sure the computer behind the DSL device has the correct gateway IP address configured.

3Check the VLAN configuration.

4Check the cable and connections between the line card and the local server.

5Try to access another local server.

If data can be transmitted to a different local server, the local server that could not be accessed may have a problem.

The SYNC-rate is not the same as the configured rate.

Table 13 SYNC-rate Troubleshooting

STEPS	CORRECTIVE ACTION

1Connect the VDSL2 modem or router directly to the VDSL2 port using a different telephone wire.

2If the rates match, the quality of the telephone wiring that connects the subscriber to the VDSL2 port may be limiting the speed to a certain rate.

If they do not match when a good wire is used, contact the distributor.