INS_NW(1,2)/M_REV– 06/10/13 PAGE 65
INSTALLATION AND OPERATION MANUAL
NW(1,2)/M
TECH SUPPORT: 1.888.678.9427
13.0 Troubleshooting
13.1 Troubleshooting steps
13.1.1 PC cannot connect to the router
The configuration web page for the router would not be able to show up if the router and your
computer are not connected. If the PC and the router are joined to the network by LAN cables,
they would 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.
(Also, dis-associating and re-associating to the wireless network has a similar benefit as
unplugging and re-inserting the LAN cable.)
The router, 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 router and
your computer are connected on the same network by running the ping command to ping the IP
address of the router.
Alternatively, type the following in the router'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.
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.
13.1.2 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.
13.2 Resetting to factory default
To reset the router to the factory default settings, while the power is on, hold down the reset
button for 8 seconds and then release
