Best Data Products DSL502E_EU - Manual (Page 69)

Best Data DSL542 ADSL Ethernet Router User’s Guide Index
61
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Troubleshooting
This appendix suggests solutions for problems you may encounter in installing or using the Best
Data DSL542, and provides instructions for using several IP utilities to diagnose problems.
Contact Customer Support if these suggestions do not resolve the problem.
Problem Troubleshooting Suggestion
LEDs
Power LED does not
illuminate after product is
turned on. Verify that you are using the power cable provided
with the device and that it is securely connected to
the Best Data DSL542 and a wall socket/power strip.
LINK WAN LED does
not illuminate after
phone cable is attached. 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.
LINK LAN LED does not
illuminate after Ethernet
cable is attached. Verify that the Ethernet cable is securely connected
to your LAN hub or PC and to the Best Data
DSL542. Make sure the PC and/or hub is turned on.
Verify that you are using a straight-through 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.
Internet Access
PC cannot access Internet Use the ping utility, discussed in the following
section, to check whether your PC can communicate
with the Best Data DSL542’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 Best Data DSL542 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).
PCs cannot display web
pages on the Internet. Verify that the DNS server specified on the PCs is
correct for your ISP, as discussed in the item above.
You can use the ping utility, discussed in the following
section, to test connectivity with your ISP’s DNS server.