ZyXEL Communications Cable Modem, Руководство пользователя

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Chapter 3 VLC Troubleshooting
VLC1324G User’s Guide
32
3.3 VDSL2 Data Transmission
The VDSL2 link is up, but data cannot be transmitted.
3.4 Local Server
The computer behind a VDSL2 modem or router cannot access a local server connected to the
line card.
3.5 Data Rate
The SYNC-rate is not the same as the configured rate.
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.
Table 12 Local Server Troubleshooting
STEPS CORRECTIVE ACTION
1 Refer to Section 3.3 on page 32 to make sure that the subscriber is able to transmit to the
line card.
2 Make sure the computer behind the DSL device has the correct gateway IP address
configured.
3 Check the VLAN configuration.
4 Check the cable and connections between the line card and the local server.
5 Try 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.
Table 13 SYNC-rate Troubleshooting
STEPS CORRECTIVE ACTION
1 Connect the VDSL2 modem or router directly to the VDSL2 port using a different telephone
wire.
2 If 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.