User's Manual

9 Installing the EUM
116 APCD-LM043-4.0
9.4.9 Obtaining Valid IP Addresses for the End-user’s PC
1. To obtain IP addresses for the end-user’s PC, including the PC IP address, Gateway
IP address, and DNS server address, the PC must request an update from the DHCP
server. This procedure varies depending on which version of Windows operating
system is running on the end-user’s PC, but a general method is outlined as follows:
For Windows 95, 98:
• Using Windows utility winipcfg, select Start > Run,type<winipcfg> in
the command line, and press Enter.
•Fromthewinipcfg menu, select Release All,thenRenew All.
• Using DOS, select Start > Run,typecmd or command (the exact process
may vary, so consult your operating system manual)
•Usingthe<ipconfig> command set, Renew all adaptors.
2. If no error messages are returned, the WISP network has successfully provided an IP
address to the end-user’s PC. You can confirm the success by checking the assigned
IP addresses. If the assigned Gateway IP address corresponds to the EUM Gateway
IP address, then the operation was successful.
3. If a valid IP address cannot be achieved, see Troubleshooting on page 121.
9.4.10 Testing the Data Link
The fact that the IP address was successfully obtained indicates that the data link from the PC
to the WISP's network is functioning properly. WaveRider recommends more thorough testing
of the EUM-to-CCU data link, as outlined below. These tests can also be used to troubleshoot
simple problems if DHCP access is not available.
There are several tools available for testing the quality of the link between the end-user PC
and the WISP network. The most important tool is the ping utility, which is available in the
CCU, EUM, and the end-user PC. The ping command can be used to progressively test the
data link, as follows:
• To Test the Data Link from the End-user’s PC to the EUM, on page 116
• Testing the Data Link from the End-user’s PC to the Network, on page 118
• Testing the Data Link from the End-user’s PC to the Internet, on page 119
To Test the Data Link from the End-user’s PC to the EUM
1. Ping the EUM’s IP address from the end-user’s PC, as follows:
• Open a DOS window in the end-user’s PC.
• At the command prompt, type ping <aaa.bbb.ccc.ddd>, where
<aaa.bbb.ccc.ddd> is the IP address of the EUM and press Enter.
2. If there is no response, check the following:
• PC IP address settings.
• Ethernet crossover cable between the EUM and the end-user’s PC, to ensure
that the pins have not been damaged and that the pin-outs are consistent with
those shown in General Troubleshooting Information,onpage151.
3. If there is a response, but with errors, check the Ethernet crossover cable.