How scan/find routers that not use the blue wan port?

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Problem :

In my network, there are 1 modem (DHCP enabled) that distribute the IP’s for all the devices and computers. This modem is plugged to a big switch.

Additionally, there are several Wireless TP-LINK WR741ND routers in this network. I disabled DHCP in all and only use the LAN ports (the blue wan port is not used). They work ok, but

I want to know how I can access the admin setup of these routers from another computer, because aparently, there’s no IP assigned to these routers.

I executed advanced ip scanner but none of these tp-link routers show up.

I looked in the manual and it seems the device only appears if used the blue wan port, but I must use only the LAN ports for them act as a switch with wireless.

Thanks.

Solution :

There is no IP address to change your routers as they are acting as network repeaters, not switches. In other words, they are just mirroring the data sent to your initial router and acting as extra ports for your first router and will share exactly the same IP address and MAC address as your initial router.

You have to use the WAN port as that is the only port in which they actually have an IP address, to all other ports they are only relaying messages and will respond to ANY message from ANY IP address by passing that IP and data to your master router.

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