User Manual

32 APCD-LM048-1.1
4: Installation
4.3.6 Testing the Data Link
The following are simple tests that the installer or end-user can perform to ensure that the link
is functioning correctly. These tests are outlined below. If any test fails, then the subsequent
tests are likely to fail as well until the problem is resolved.
1. Ping the EUM: Configure the end-user’s PC to have the local link IP address and ping
the EUM3006 at IP address “169.254.10.250” (see Ping the EUM on page 33 for more
details if needed).
2. Assess the Link: Use the Setup Menu as described in Setup Menu on page 15 to
assess the Radio Link Status and to get the Troubleshooting information to baseline
the installation. This test verifies that the end-user’s PC is communicating with the
EUM3006 and provides insight into the state of the RF link. This test is recommended
even if the modem was aligned using the MDB1000, since it provides more details on
the state of the modem and what CCU(s) it has located.
3. Verify DHCP: If the network assigns end-user PC’s IP addresses by DHCP, then
reconfigure the end-user PC to use DHCP to automatically obtain its IP address.
Verify the end-user PC has received an IP address, by using the DOS command
“ipconfig” and seeing that an IP address is assigned along with Gateway and DNS
server addresses This confirms that the End user PC is contacting the DHCP server
correctly.See Verify DHCP on page 34 if more details are required.
4. Ping the Gateway: Assuming the end-user PC has an IP address and a Gateway
address as shown by the “ipconfig” command, ping the gateway to determine if it can
be reached. See Ping the Gateway on page 34 if more details are required.
5. Ping Internet by IP address: If everything is good so far, try pinging a known Internet
address. If successful, then you know that the end-user PC can access the general
Internet. See Ping Internet by IP address on page 35 if more details are required.
6. Ping Internet by Name: Ping a known named Internet address (e.g. “ping
www.google.com” or some equivalent). Even if the site refuses ping commands, you
should get the IP address for the named site. If so, this shows that DNS is working
correctly. See Ping Internet by Name on page 36 if more details are required.
7. Link Speed Test: Go to a known web-site that offers link speed testing, such as
“http://bandwidthplace.com/speedtest/”. Follow their instructions and determine the
link speed. There are many factors affecting the link speed between the end-user’s
PC and the test site, including the assigned grade-of-service for the modem, the
loading on the CCU sector and the loading over the rest of the Internet. So this test is
not the best test for ensuring that the modem to CCU link is operating at its correct
speed. But it should indicate that the PC is able to communicate with a site on the
Internet.
If any of these tests fail, then the installer may need to check the modem, its alignment, the
cabling, the PC’s configuration and the RF link. If all of these appear good, then the installer
should contact the Network Operator for further troubleshooting advice.
Even if all the above tests indicate a good link, WaveRider recommends that the Network
Operator remotely test the EUM-to-CCU data link more thoroughly soon after it is installed.
The test facilities available to the Network Operator are outlined in the LMS4000 Managing the
Network manual and other manuals on the WaveRider web-site.
The following sections provide more detail for some of the steps for Testing the Data Link.