I spent the whole day configuring the routers but no luck, my case as follow: I access internet through 4g huawi modem /router I want to connect wireless tp-link which connects two printers, I want to make the two networks connect and make the computers on the first network access the printer on the second network, as in the following diagram:

network diagram

I need your advice on how to configure the routers.

  • So have you successful connected the router to the gateway either through a wireless connection or a LAN connection? – Ramhound May 11 '15 at 18:58
  • no I couldn't connect the two routers – Ya Basha May 11 '15 at 19:07

To achieve this, the router on the second network needs to be configured to deliver IP addresses in the same subnet as the 4G router.

The easiest thing is to set the DHCP settings of the router to deliver IP addresses in an unused part of the network the the 4G router uses AND sets the default gateway to the 4G router and not itself. You will also need to make sure the DNS settings are consistent. So if the 4G router offers itself as the DNS server, make sure the other router also offers the 4G router as DNS server.

So if the 4G router is on, with its own DHCP service delivering from, the second router should have a fixed IP something like and it's DHCP should deliver something like

You also need to make sure that the second router allows all incoming traffic either by turning off it's firewall or by making a straight passthrough.

UPDATE: If you cannot get your router to route on the same subnet. The alternative would be to move all client access to the router - though that does assume you don't have any problems with wireless reach. If you can do that, then you want to get the 4G router to have an internal IP address range such as 192.168.1.x, make the external address of the router a fixed address in that range and get the router to deliver DHCP on a different subnet such as 192.168.2.x

  • I configured it, but still the gateway it points to itself so I tried to set the wan connection to static ip: ip=, subnet mask:, default gateway and dns server to:, but the problem when I click next: error code: 5008, wan ip address and lan ip address cannot be in the same subnet. Please input another ip. – Ya Basha May 12 '15 at 8:17
  • Ouch, in that case I'm not sure your router allows itself to be used in the way you want. See my update. – Julian Knight May 12 '15 at 21:09

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