ZyXEL Communications IES-2000, User Manual

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IES-2000/3000 User’s Guide
30-2 Troubleshooting
Table 30-2 Troubleshooting Data Transmission
STEPS CORRECTIVE ACTION
3 Check the line card’s VLAN configuration.
For the ALC1024 and SLC1024, refer to the Bridge Commands and IEEE 802.1Q Tagged VLAN
Commands chapters .
For the VLC1024, check SMT menus 2 and 17 (refer to the General, Switch and IP Setup and the
VLAN Setup chapters.
4 For the VLC1024, do a local and remote feedback test from menu 24.4 (see the Diagnostic section in
the System Maintenance 1 chapter ).
5 Ping the line card from the computer behind the DSL modem or router.
6 If you cannot ping, connect a DSL modem to a DSL port (that is known to work) on the same line
card.
If the DSL modem or router works with a different DSL port, there may be a problem with the original
port. Contact the distributor.
7 If using a different port does not work, try a different DSL modem or router with the original port.
30.3 DSL LED(s) Turn On and Off
A DSL LED turns on and off intermittently.
Table 30-3 Troubleshooting a Non-Constant DSL LED
STEPS CORRECTIVE ACTION
1
Use the
linerate
command with the ALC1024, or the
lineinfo
command with the SLC1024 to
check the subscriber’s telephone wiring (refer to the ALC1024 Specific Commands and the
SLC1024 Specific Commands chapters).
For the VLC1012, use the VDSL CI commands to reset and reconnect the VDSL channel (see the
VDSL CI Commands chapter ).
2 Connect a DSL modem directly to the DSL port of the line card using a different telephone wire.
If the DSL LED still turns on and off repeatedly, contact the distributor.
30.4 Data Rate
The SYNC-rate is not the same as the configured rate.
Table 30-4 Troubleshooting the SYNC-rate
STEPS CORRECTIVE ACTION
1 Connect the DSL modem or router directly to the DSL port of the line card using a different
telephone wire.
2 If the rates match, the quality of the telephone wiring that connects the subscriber to the line card
may be limiting the speed to a certain rate. Use the
linerate
command to check the subscriber’s
telephone wiring.
If they do not match when a good wire is used, contact the distributor.