4 password – ZyXEL Communications IES-708-22A User Manual
Page 381
Chapter 56 Troubleshooting
IES-708-22A User’s Guide
381
V
The DSL link is up, but data cannot be transmitted.
1 Check the switch mode and port isolation settings. Check to see that the VPI/VCI and
multiplexing mode (LLC/VC) settings in the subscriber's DSL modem or router match
those of the DSL port. If the subscriber is having problems with a video or other high-
bandwidth services, make sure the IES-708-22A's DSL port's data rates are set high
enough.
2 Check the VLAN configuration.
3 Ping the IES-708-22A from the computer behind the DSL modem or router. If you
cannot ping, connect a DSL modem to a DSL port (that is known to work).
4 If the DSL modem or router works with a different DSL port, there may be a problem
with the original port. Contact the distributor.
5 If using a different port does not work, try a different DSL modem or router with the
original port.
V
The computer behind a DSL modem or router cannot access a local server
connected to the IES-708-22A.
1 Make sure that the subscriber is able to transmit to the IES-708-22A.
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 IES-708-22A 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.
V
The SYNC-rate is not the same as the configured rate.
1 Connect the DSL modem or router directly to the DSL port using a different telephone
wire.
2 If the rates match, the quality of the telephone wiring that connects the subscriber to the
DSL port may be limiting the speed to a certain rate. If they do not match when a good
wire is used, contact the distributor.
56.4 Password
If you forget your password, you will need to use the console port to reload the factory-default
configuration file (see
).