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Using the Ping Utility to Troubleshoot a TCP/IP Network
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.
By using the Ping utility in the built-in interface and in your PC or workstation, you can easily
troubleshoot a TCP/IP network.
For further information on the PING utility, refer to
Testing the LAN Path to Your Router
To verify that the LAN path to your router is set up correctly, from the Windows (95 or 3.1) Run
menu, type PING followed by the IP address of the router and press the Enter key.
You should see a message like this:
Pinging <IP address> with 32 bytes of data
If the path is working, you see:
Reply from < IP address >: bytes=32 time=NN ms TTL=xxx
If the path is not working, you see:
Request timed out
If the path is not functioning correctly, you might have one of the following problems:
•
Wrong physical connections
To make sure that all physical connections are correct, do the following:
Make sure that the Link LED on the Ethernet card in your PC is lit.
a.
If you are using a hub, make sure that the Link LED on the hub is on for the port
b.
connected to your router and for the port connected to your PC.
Make sure your router is connected to the Uplink (or MDI) port on the hub and any
selection switch is set for Uplink (or MDI), if you are using a hub with a straight-through
cable.
You need a crossover cable to connect to a regular (or MDIX) hub port.
Troubleshooting
Reference Guide for the Model RT210/RT211 ISDN Routers
"Using the PING
Command" on
page
4-20.
5-5
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Troubleshooting
