User's Manual

36 LT-9064 Rev A Altum AC 600 User Manual
Chapter 6: Final Notes
Logout: Logs out of the radio's web page.
6.1 Troubleshooting steps
6.1.1 PC cannot connect to the radio
The configuration web page for the radio will not be
able to show up if the radio and your computer are
not connected.
If the PC and the radio are joined to the network by
LAN cables, they will not be able to connect if any of
the network cable connections are loose. A possible
indicator is that there is no light at the LAN port of
the PC. In Windows, if you click the network icon and
click to “View network connections”, the LAN port
shows “Disconnected”. Please ensure that all the
connections are tight.
Sometimes, disconnecting and reconnecting the LAN
cable solves connection problems if DHCP is used,
because the DHCP server and DNS server are reset.
The radio, the computer, and the gateway must have
IP addresses on the same network. For example, if
you use a subnet mask of 255.255.255.0 and the
gateway IP address is 192.168.3.1, all the IP addresses
must be unique and be of the form 192.168.3.X.
Check whether the radio and computer are connected
on the same network by running the ping command
to ping the IP address of the radio. Alternatively, type
the following in the radio's Linux terminal:
• ping 192.168.3.77 (if your computer's
IP address is 192.168.3.77 for example.)
They should be able to give the ping responses.
An IP address conflict would cause unstable pings.
Switch to another address and ping the conflicting
address to check.
If using a Windows computer, you should run the
command arp -d * if the network configuration
has changed. This is to delete the address resolution
protocol (ARP) table in Windows as it may not update
fast enough. This also applies if multiple radio units
with the factory default IP address are being set up all
at the same time. After configuring each radio, run
the arp –d command from your PC.
If the ping still cannot get responses, try disabling the
firewall on your Windows computer. The Windows
Firewall on your computer may prevent it from
sending back a ping response. Disabling the firewall
may be a security risk, so you should take the
precaution of disconnecting the Internet first.
6.1.2 PC Ethernet and Wifi adapters
If your PC has both Ethernet and Wifi adapters, they
must not have the same subnet. Otherwise, packets
from the PC may not be directed to the correct
network.
6.1.3 Mobile phone cannot connect
A mobile phone or any Wifi user would not be able to
connect to a wireless network if there does not exist a
DHCP server on the network. Please make sure that
there is one, and only one, DHCP server to assign IP
addresses automatically to users.
You may refer to Section 5.2.2 to enable the DHCP
server for a . The option is found in Network →
Interfaces → LAN → DHCP Server.
Figure 70: The Logout button is circled.