Using the ping Utility
If the target computer cannot be located, you will receive the message Request
timedout.
Using the ping command, you can test whether the path to the Wireless ADSL2+
Router is working (using the precongured default LAN IP address 10.0.0.2) or an-
other address you assigned.
You can also test whether access to the Internet is working by typing an external
address, such as that for www.yahoo.com (216.115.108.243). If you do not know the
IP address of a particular Internet location, you can use the nslookup command, as
explained in the following section.
From most other IP-enabled operating systems, you can execute the same com-
mand at a command prompt or through a system administration utility.
nslookup
You can use the nslookup command to determine the IP address associated with
an Internet site name. You specify the common name, and the nslookup command
looks up the name in on your DNS server (usually located with your ISP). If that
name is not an entry in your ISP’s DNS table, the request is then referred to another
higher-level server, and so on, until the entry is found. The server then returns the
associated IP address.
On Windows-based computers, you can execute the nslookup command from the
Start menu. Click the Start button, and then click Run. In the Open text box, type the
following:
Nslookup
Click OK. A Command Prompt window displays with a bracket prompt (>). At the
prompt, type the name of the Internet address that you are interested in, such as
www.microsoft.com.
The window will display the associate IP address, if known, as shown below:
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