Appendix A: Troubleshooting - Advantech ICR-2834 Hardware Manual

Appendix A: Troubleshooting

If you cannot connect to the router from your PC, your network card may be configured in such a way
that it is not possible to connect to the router. Take one or more of the following steps in order to solve
the problem:
• Make sure your PC's network card is configured to obtain the IP address form the DHCP server
(by default the DHCP server is running in the router).
• Connect the router to the PC via Switch.
• Connect the router to the PC, start the router first and then start the PC after the router's
initialization.
Ethernet connection fails or is not establishing.
• It is possible to turn auto negotiation off and set a rate and duplex manually on the Ethernet
interface of the router. Available on "LAN Configuration" page in the router.
Mobile WAN connection fails.
• Check the signal power ("Mobile WAN status" page). If the signal power is weak, you will have
to use a better antenna. If the neighbouring cells have a similar signal strength, you will need to
use a directional antenna. For proper operation, the signal levels have to be good.
• Try to enable automatic ping from the router, which will check the connection when there are
no data running and in the case of a failed ping, restart the connection. This can be done on
the "Mobile WAN Configuration" page in the router in the "Check connection" section. "Enable +
bind" option is to ensure the ping goes always through Mobile WAN network interface.
Mobile WAN connection cannot be established.
• Check the "Mobile WAN Configuration" – APN, name, password and IP address (all can be
blank).
• Try to enter the SIM card PIN – verify that the SIM card has the PIN code entered. Available on
"Unlock SIM Card" page in the "Administration" section.
• In a private APN it is not recommended to get the DNS settings from operator (on "Mobile WAN"
page)
• Go to "System Log" page in "Status" section and observe where the error occurs.
I cannot connect from the Internet to the device behind the router. I have NAT enabled.
• The device's gateway has to be configured so it points to the router.
I can't access my Web server placed behind the router over NAT.
• The remote HTTP access to the router has to be disabled on "NAT Configuration" page in the
router. Also enable "Send all remaining incoming packets to default server" feature and fill in the
IP address of your Web server. On the Web server, the default gateway has to be the IP address
of the router.
DynDNS doesn't work.
• With private APN this will not work.
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