Troubleshooting Procedures
52
D3CM1604V EMTA Cable Modem Administrator Manual
network address
169.254
. This would be fine if all the computers on your network used
IP addresses from the
169.254
base network address. If one of them isn’t, however,
that computer will have problems connecting to the other network computers.
Possible causes for an IP address not being assigned are:
Defective cables. Replace the cable if it is worn or defective.
An Ethernet cable may not be firmly connected at both ends. Secure the cable at both
ends. Often, just reseating the cable into a connector is all that is required.
The NIC may be bad or the network cable connected to it may be the wrong kind (for
example, it might be a straight-through cable when a crossover cable is required). If you
have another NIC and cable available, try using them instead.
The EMTA port may be bad. Plug the network cable into a different port on the EMTA.
The DHCP server that would automatically assign IP addresses is not configured for
DHCP.
Wrong WEP or WPA settings are configured on the EMTA or access point for wireless
connections.
The sections that follow describe how to identify the IP addresses on devices running
Windows and Macintosh operating systems.
Microsoft Windows 2000
To find the IP address of a computer running Microsoft Windows 2000:
1. From the Windows task bar, click
Start
and select
Run
.
2. In the
Open
field, type
cmd
and click
OK
. A DOS command window appears.
3. In the DOS command window, type
ipconfig
and then press Enter. Your IP address will be
listed (see Figure 5-3).
4. When you finish, type
exit
at the command prompt and press Enter to close the window
Figure
5-3. Example of an IP Address
Sample IP Address