Troubleshooting Configuration Problems; Determining Your Ip Address - SMC Networks SMCD3GNV3 User Manual

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Figure 105. Examples of Connectivity Statuses for Microsoft Windows XP

Troubleshooting Configuration Problems

After confirming that your hardware is working properly, examine your networking
configuration to determine whether there is a misconfiguration of IP addresses, subnet
masks, gateways, or broadcast addresses. Common configuration problems can be caused
by misconfiguring newly connected or configured devices.

Determining Your IP Address

An IP address uniquely identifies computers and computing devices, such as the Gateway,
on a TCP/IP network. IP addresses are normally expressed in dotted-decimal format, with
four numbers (or "octets") separated by periods, such as 10.1.10.1 .
For troubleshooting purposes, all the numbers in the IP addresses of your networked
devices must be consistent across the network. This means:
The first nine numbers (i.e., the first three octets) in the IP addresses are the same for all
the devices on the network.
The last three numbers (i.e., the last octet) in the IP addresses are different and not in
use by other devices on the network (assuming your subnet mask is 255.255.255.000 ).
For example, if the IP address for the Gateway is 10.1.10.1 , the other devices on the
network must have an IP address whose:
First three octets are 10.1.10 .
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Connected. Your computer is properly connected to the Gateway or wired/wireless network,
but there is a problem between the Gateway and the Internet.
Disabled. Someone has manually disabled the NIC. To fix the problem, right-click the
adapter and click Enable.
Unplugged. Your computer cannot detect the connection to the Gateway.
Not connected. Your computer cannot connect to your wireless network.
Limited or no connectivity. Your computer is properly connected to the Gateway, but either
the Gateway is misconfigured or there is a problem between the Gateway and the Internet.
SMCD3GNV Wireless Cable Modem Gateway User Manual
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