2: Installation
APCD-WM001-1.0
17
on page 18 if more details are required. This step
assume your gateway will respond to pings.
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
on page 19 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
on page 20 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 Base Station sector and the loading over the rest of the Internet. So this
test is not the best test for ensuring that the modem to Base Station 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, the antenna and 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.
The following sections provide more detail for some of the steps for Testing the Data Link.
Ping the MMT9000
Note that the MMT9000 may be on a different sub-net than the end-user’s PC, so pinging the
IP address assigned to the MMT9000 will go through the Base Station. Therefore, we ping the
MMT9000 using the local link IP address as the 1st test.
1. Ensure the end-user’s PC is configured with an IP address of 169.254.10.251,
netmask = 16 (or 255.255.0.0). See
on page 21 for more information.
2. Ping the MMT9000’s local-link IP address 169.254.10.250, from the end-user’s PC, as
follows:
•
Open a DOS window in the end-user’s PC.
•
At the command prompt, type
ping 169.254.10.250
and press
Enter
.
3. If there is no response, check the following:
•
The end-user’s computer IP address settings.
•
The Ethernet link light on the PC.
•
The Ethernet crossover cable between the MMT9000 and the end-user’s PC,
to ensure that the pins have not been damaged.
4. If there is a response, but with errors, check the Ethernet crossover cable.
This is what a successful ping from the end-user’s PC to the MMT9000 looks like:
C:\>
ping 169.254.10.250
Pinging 169.254.10.250 with 32 bytes of data:
