Hamlet HNW150APBR, Руководство пользователя

Страница: 211 / 221

Wi-Fi Personal Bridge 150 User Manual
211
Diagnosing Problem using IP Utilities
ping
Ping is a command you can use to check whether your PC can recognize other computers on your
network and the Internet. A ping command sends a message to the computer you specify. If the
computer receives the message, it sends messages in reply. To use it, you must know the IP
address of the computer with which you are trying to communicate.
On Windows-based computers, you can execute a ping command from the Start menu. Click the
Start button, and then click Run . In the Open text box, type a statement such as the following:
ping 10.0.0.2
Click OK . You can substitute any private IP address on your LAN or a public IP address for an
Internet site, if known.
If the target computer receives the message, a Command Prompt window is displayed:
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 Wireless Gateway is working (using
the preconfigured default LAN IP address 10.0.0.2) 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.
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: