SunPCi User's Guide

Networking Problems

Cannot Connect to Other Systems

Before you start to diagnose problems using SunPCi to connect to other systems on the network, make sure that you have configured SunPCi and your workstation as follows:

Your workstation and SunPCi host must have different IP addresses.

Both the SunPCi host and the workstation should be located on the same physical subnet, although they may be on different virtual subnets.

Your workstation and SunPCi must have the same netmask. The value of the netmask depends on the type of network you are using; contact your network administrator for more information.

If you are having trouble using SunPCi with TCP/IP, perform the following steps to determine the cause of the problem.

Note –

You will need to know the names and IP addresses of another system on the same subnet as your workstation, and of a system not on the same subnet. Contact your network manager if you do not have this information.

Diagnosing TCP/IP Problems

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.

Enter the ping command, followed by the IP address of a system on your subnet (not your workstation). For example:
```
C:\> ping 206.4.151.254
```
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.

Enter the ping command, followed by the name of the system you pinged in Step 1. For example:
```
C:\> ping bobswk
```
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.

Enter the ping command, followed by the IP address of a system not on your subnet. For example:
```
C:\> ping 199.172.10.2
```
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.

Enter the ping command, followed by the name of a system not on your subnet. For example:
```
C:\> ping maryswk
```
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.