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Troubleshoot a TCP/IP Network Using a Ping Utility
Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request
packet to the designated device. The device then responds with an echo reply. You can
easily troubleshoot a TCP/IP network by using the ping utility in your computer or
workstation.
Test the LAN Path to Your Gateway
You can use ping to verify that the LAN path to your gateway is set up correctly.
To ping the gateway from a computer running Windows 95 or later:
1.
From the Windows toolbar, click the Start button and select Run.
2.
In the field provided, type ping followed by the IP address of the gateway, as in this
example:
ping 192.168.0.1
3.
Click OK.
You should see a message like this one:
Pinging <IP address> with 32 bytes of data
If the path is working, you see this message:
Reply from < IP address >: bytes=32 time=NN ms TTL=xxx
If the path is not working, you see this message:
Request timed out
If the path is not working correctly, you could have one of the following problems:
•
Wrong physical connections.
-
Make sure that the LAN port LED is lit. If the LED is off, see
Troubleshoot
-
Check that the corresponding LAN LEDs are lit for your network interface card
and for the hub ports (if any) that are connected to your workstation and gateway.
•
Wrong network configuration.
-
Verify that the Ethernet card driver software and TCP/IP software are both
installed and configured on your computer or workstation.
-
Verify that the IP address for your gateway and your workstation are correct and
that the addresses are on the same subnet.
CG3000DCR Advanced Cable Modem Gateway
on page 35.
Troubleshooting
37
Use LEDs to
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