Asus GigaX2124 - Manual (Page 112)

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Chapter 7 - Troubleshooting
ASUS GigaX2124
If the target computer cannot be located, you will receive the message
“Request timed out.”
Using the ping command, you can test whether the path to the switch is
working (using the pre-configured default LAN IP address 192.168.1.1) or
another 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
command at a command prompt or through a system administration utility.
7.1.2 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 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, 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 interested
in, such as www.absnews.com.
The window displays the associate IP address you know. See Figure 78.
Figure 78. 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
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