152
Chapter 14 - Troubleshooting
ASUS SL1200
Figure 14.2. Using the nslookup utility
C:\>nslookup
Default Server: tp-dc-01.corpnet.asus
Address: 192.168.28.68
> www.abcnews.com
Server: tp-dc-01.corpnet.asus
Address: 192.168.28.68
Name: www.abcnews.com
Address: 204.202.132.19
Aliases: www.abcsnew.com
>
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
command at a command prompt or through a system administration utility.
14.1.2 nslookup
You can use the nslookup command to determine the IP address associ
-
ated with an Internet site name. You specify the common name, and the
nslookup command looks up the name on your DNS server (usually lo-
cated 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, 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 you are inter-
ested in, such as www.absnews.com.
The window displays the associate IP address you know. See Figure 14.2.
There may be several addresses associated with an Internet name. This
is common for web sites that receive heavy traffic; they use multiple,
redundant servers to carry the same information.
To exit from the nslookup utility, type exit and press <
Enter
> at the
command prompt.
