Troubleshooting - CTC Union atu-r130 User Manual

ATU-R130 ADSL Ethernet Router User' s Guide
A

Troubleshooting

{ XE "Troubleshooting" }This appendix suggests solutions for problems you may encounter in
installing or using the ATU-R130, and provides instructions for using several IP utilities to
diagnose problems.
Contact Customer Support if these suggestions do not resolve the problem.
Problem
LEDs
Power LED does not
illuminate after product is
turned on.
LINK WAN LED does
not illuminate after
phone cable is attached.
LINK LAN LED does not
illuminate after Ethernet
cable is attached.
Internet Access
PC cannot access Internet
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Troubleshooting Suggestion
{ XE "LEDs:troubleshooting" }Verify that you are
using the power cable provided with the device and
that it is securely connected to the ATU-R130 and a
wall socket/power strip.
Verify that a standard telephone cable like the one
provided is securely connected to the ADSL port and
your wall phone jack. Wait 30 seconds to allow the
device to negotiate a connection with your ISP.
Verify that the Ethernet cable is securely connected
to your LAN hub or PC and to the ATU-R130. Make
sure the PC and/or hub is turned on.
Verify that you are using a straight-through{ XE
"Ethernet cable:straight-through vs crossover" } type
Ethernet cable to the uplink port on a hub or a cross-
over type cable to a stand-alone PC. If you
connected the device to an ordinary hub port (not
Uplink), you must use a straight-through cable. (Hold
the connectors at each end of the cable side-by-side
in the same position. If the order of their color-coded
wire pairs is the same, it is a straight-through type.)
Contact Customer Support if your cable is not the
correct type.
Verify that your cable is sufficient for your network
requirements. A 100 Mbit/sec network (10BaseTx)
should use cables labeled Cat 5. 10Mbit/sec cables
may tolerate lower quality cables.
{ XE "Internet:troubleshooting access to" }Use the
ping utility, discussed in the following section, to
check whether your PC can communicate with the
ATU-R130' s LAN IP address (by default
192.168.1.1). If it cannot, check the Ethernet cabling.
If you statically assigned a private IP address to the
computer, (not a registered public address), verify
the following:
Check that the gateway IP address on the
computer is your public IP address. If it is not, correct
the address or configure the PC to receive IP
information automatically.
Verify with your ISP that the DNS server
specified for the PC is valid. Correct the address or
configure the PC to receive this information
automatically.
Verify that a Network Address Translation
rule has been defined on the ATU-R130 to translate
the private address to your public IP address. The
assigned IP address must be within the range
specified in the NAT rules (see Chapter 7). Or,
configure the PC to accept an address assigned by
another device. The default configuration includes a
NAT rule for all dynamically assigned addresses
within a predefined pool (see the instructions in
Chapter 6 to view the address pool).
Index