Diagnosing TCP/IP Problems

1. In the SunPCi window, open a DOS window. In Windows 95/NT, choose the Start button and then select Applications and MS-DOS Prompt from the pop-up menus.

   The DOS Prompt window is displayed.

2. Enter the ping command, followed by the IP address of a system on your subnet (not your workstation). For example:

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   C:\> ping 206.4.151.254
   

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   If this ping command succeeds, proceed to Step 1. If it returns an error such as Host not found, your SunPCi card may be using the wrong subnet, or your netmask may be incorrect. Contact your network manager to make sure you have the correct information.

3. Enter the ping command, followed by the name of the system you pinged in Step 1. For example:

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   C:\> ping bobswk
   

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   If this ping command succeeds, proceed to Step 1. If it returns an error, your DNS (Domain Name Service) needs to be reconfigured. Contact your network manager for the host name, domain name, and IP address of each DNS server on your network.

4. Enter the ping command, followed by the IP address of a system not on your subnet. For example:

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   C:\> ping 199.172.10.2
   

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   If this ping command succeeds, proceed to Step 1. If it does not succeed, make sure that you have specified the correct network router. Contact your network manager.

5. Enter the ping command, followed by the name of a system not on your subnet. For example:

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   C:\> ping maryswk
   

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   If this ping command succeeds, then TCP/IP is set up correctly. If it returns an error, contact your network manager and double-check the information you set up for the DNS servers as described in Step 1.