Evaluating Symptoms And Solutions - 3Com Dual 56K User Manual

126 C 10: T
HAPTER ROUBLESHOOTING AND
Monitoring the Alert
LED
Monitoring the LAN
Status LEDs
Evaluating Symptoms
and Solutions
Table 6 Symptoms, Causes, and Solutions
Symptom
During installation, LAN Status
LED does not light up
Upon initial setup, launching
the Web browser does not
start the configuration process
(the welcome message does
not appear).
(continued)
M
AINTENANCE
Power cycle the Dual 56K LAN Modem and observe the Alert LED. During the
power-up self-test, the Alert LED will remain lit.
If the Alert LED goes off, the test has been successful.
If the Alert LED flashes for more than several seconds, it means the LAN
Modem is either in firmware download mode or there is an internal failure. If
the LAN Modem is not in firmware download mode, notify your reseller that
the Dual 56K LAN Modem has failed the self-test and order a replacement.
A fast flash of the Alert LED indicates that the DHCP server has issued all of the
available IP addresses and is unable to fulfill a request for a new IP address.
Refer to "During installation, Alert LED continues to flash" in Table 6 below for
more information.
Observe the LAN Status LEDs labeled 1, 2, 3, or 4, depending on the port to which
a workstation is attached. If the LAN Status LED is lit for the correct port, it means
that the LAN Modem detects the Ethernet link signal and operation is normal.
When the computer attached to this port is transmitting data to the LAN, this LED
flashes.
If the LAN Status LED is not lit on the port to which a workstation is attached, the
LAN Modem does not detect the Ethernet link integrity signal. Refer to "During
installation, LAN Status LED does not light up" in Table 6 below.
The Ethernet cable may not be properly connected, or the cable may be the wrong
polarity.
Table 6 lists symptoms of common problems, possible causes, and possible
solutions.
Possible Cause
Ethernet cable is not securely
connected.
Ethernet card is not set up
properly.
Your Web browser needs the IP
address of the Dual 56K LAN
Modem.
Or, the browser is not set to a
default start page.
Solution
Check the Ethernet cable connection. Make sure it is
inserted properly in LAN port 1,2,3, or 4 on the back of
the Dual 56K LAN Modem and in the Ethernet port on
the back of your computer.
Make sure your Ethernet card is set up properly (for
example, proper drivers are loaded). Refer to the
documentation provided with your Ethernet card for
instructions.
Enter the following URLs in your Web browser:
http://192.168.1.1. Alternatively, you can enter
http://3com.oc.lanmodem.