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Chapter 14 - Troubleshooting
ASUS SL1200
14.1 Diagnosing problems using IP utilities
14.1.1 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 192.168.1.1
Click <
OK>. You can substitute any private IP address you know on your
LAN or a public IP address for an Internet site.
If the target computer receives the message, a Command Prompt window
appears as shown in Figure 14.1.
Figure 14.1 Using the ping utility
C:\>ping 192.168.1.1
Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.1.1: bytes=32 time<10ms TTL=225
Reply from 192.168.1.1: bytes=32 time<10ms TTL=225
Reply from 192.168.1.1: bytes=32 time<10ms TTL=225
Reply from 192.168.1.1: bytes=32 time<10ms TTL=225
Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received =4, Lost = 0 <0% loss)
Approximate round trip in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
C: \>
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
