Set up an Edimax extender with a router using custom DNS

An Edimax Wi-Fi extender can work with a router that uses custom DNS, including a home network configured with Cloudflare, Google Public DNS, an AdGuard service, or a local DNS server such as Pi-hole. DNS controls how device names and website addresses are resolved; it usually does not determine whether the extender can repeat the router’s wireless signal. The important settings are the wireless network name, password, IP address, DHCP behaviour and operating mode.

The process is suitable for Australian homes using NBN equipment, third-party routers or ISP-supplied gateways from providers such as Telstra, Optus and TPG. You can install the extender with WPS or through a browser, then confirm that devices in the extended area still receive the intended DNS service. A browser-based setup is usually the better option when the router has customised network rules.

Understand what custom DNS changes

A router with custom DNS sends domain lookup requests to a nominated service instead of automatically using the DNS servers supplied by the internet provider. For example, a household may use Cloudflare for speed, an Australian filtering service for family safety, or Pi-hole to block advertising across the home network. The router normally advertises these DNS addresses to clients through DHCP.

In extender mode, the Edimax unit generally acts as a wireless bridge or repeater. It receives traffic from the main router and forwards it to connected devices, so the router remains responsible for DHCP and DNS. In this arrangement, there is usually no need to enter custom DNS addresses into the extender itself.

The situation changes if the Edimax device is configured as a router or access point with its own DHCP service. Two active DHCP servers can cause incorrect gateways, duplicate IP addresses and inconsistent DNS responses. For a simple whole-home extension, use repeater, universal repeater or range extender mode, depending on the names shown in the Edimax interface.

DNS can affect access to a setup address that uses a hostname, such as an Edimax setup page. If that name does not open, connect to the extender’s local IP address instead. A DNS problem should not be treated as a failed Wi-Fi pairing until the wireless link and IP details have been checked.

Prepare the main router and extender

Place the Edimax extender in the same room as the router for the initial installation. Connect it to power and wait for its status lights to settle. Australian homes with thick brick walls, foil insulation or concrete apartment construction can lose a considerable amount of signal between rooms, so a location beside the router makes the first configuration more reliable.

Find the router’s wireless name and password before starting. If the router combines 2.4 GHz and 5 GHz under one name, note whether band steering is enabled. Some older extenders pair more reliably with the 2.4 GHz network, which has greater range but lower typical throughput. A dual-band Edimax model may allow a separate backhaul and client band, while a single-band model shares its wireless capacity.

Check whether the router has access controls enabled. MAC filtering, hidden SSIDs, wireless isolation and WPA3-only security can prevent an older extender from joining. Temporarily selecting WPA2-Personal or a mixed WPA2/WPA3 mode may help during setup, provided the Edimax model does not support WPA3. Restore the preferred security setting only after checking compatibility.

Avoid changing the router’s custom DNS while pairing. DNS is rarely the cause of a failed WPS connection, and changing several settings at once makes troubleshooting harder. Record the current DNS addresses and router LAN address so the original configuration can be restored if necessary.

Use WPS for a quick wireless connection

WPS is the simplest method when both devices support it. Press the WPS button on the main router, then press the WPS button on the Edimax extender within the time shown in its manual. The order and button-hold duration vary between models, so use the device instructions rather than assuming a long press is required.

During pairing, keep the extender close to the router. A flashing WPS or wireless light usually indicates that the devices are negotiating a connection; a steady light may indicate success. Allow several minutes before moving the extender or pressing another button. Pressing WPS repeatedly can cancel an active pairing process.

Many ISP routers supplied in Australia use a WPS button that may be disabled in the administration page. Telstra Smart Modem, Optus gateways and some third-party NBN routers can also use band steering or security settings that make WPS unreliable. If the WPS light fails, use browser-based installation instead of repeatedly resetting both devices.

Once the Edimax unit joins the network, move it to a position roughly halfway between the router and the weak-signal area. Do not place it in the dead zone itself. For a double-storey home in Brisbane or Perth, the best position may be near the stairwell or above the central living area rather than at the far end of a bedroom corridor.

Configure the extender through a browser

For manual installation, connect a computer or phone to the Edimax setup network. The temporary Wi-Fi name is often printed on the label or supplied in the quick-start guide. Some models also support a wired connection during setup. Turn off mobile data on a phone if it keeps switching away from the temporary Wi-Fi.

Open the Edimax setup address listed for the model. It may be a hostname such as edimax.setup or a private address shown in the documentation. If the hostname fails because the router’s custom DNS does not resolve local names, use the extender’s IP address. Common private address ranges include 192.168.1.x and 192.168.2.x, but the correct address depends on the model and network.

Select the router’s wireless network from the scan results, choose the correct band and enter the wireless password carefully. If two network names appear similar, compare the channel or signal information with the router’s settings. Do not select a neighbour’s network, a guest network or a printer’s temporary hotspot.

Give the extended network a clear name. You can use the same SSID and password as the main router for easier roaming, although some devices may hold onto a weak signal for too long. A separate name, such as a simple “-EXT” suffix, makes testing easier and shows immediately whether a device is connected through the extender.

Settings to check before saving

• Confirm that the Edimax mode is repeater, range extender or wireless bridge rather than router mode.
• Match the router’s wireless security type and use the exact password, including capital letters.
• Leave DHCP enabled on the main router and disabled on the extender when the interface provides that choice.
• Record the extender’s management IP address after it joins the network.
• Keep the custom DNS addresses on the main router unless the Edimax guide specifically requires another arrangement.

After saving, the extender may restart and its temporary setup network may disappear. Reconnect to the new extended network and wait for the main router to issue an IP address. If the configuration page becomes inaccessible, check the router’s connected-device list for the Edimax hostname or MAC address.

Check IP addressing and DNS behaviour

A working wireless connection does not automatically prove that the network is correctly configured. On a connected phone or computer, inspect the network details. The device should have an IP address in the same local range as the router, a default gateway pointing to the main router, and DNS servers matching the custom service you selected.

For example, if the main router is 192.168.1.1 and the client receives 192.168.1.47, the arrangement is usually consistent with a bridged extender. If the extender gives the client an address from a completely different range, such as 192.168.2.x, it may be running as a second router. That can create double NAT and bypass the DNS rules configured on the primary router.

Test a website by name and then test the router’s local address. A website loading confirms basic internet access, while the router address confirms that the client can still reach local network equipment. To test custom DNS, open the DNS service’s verification page or check the DNS server values displayed by the device. A Pi-hole installation may also show the client in its query log.

Some Australian households use a DNS service to apply parental controls or block malware. Such services may deliberately block certain domains, which can look like an extender fault. Compare results from a device connected directly to the router and one connected through the Edimax extender. If both show the same result, the DNS policy is probably working as designed.

Signs that the installation is working properly

• Devices connected through the extender receive addresses from the main router’s DHCP range.
• The default gateway is the main router, not a separate Edimax gateway.
• DNS verification shows the nominated service on both direct and extended connections.
• Local devices such as printers, NAS units and smart-home hubs remain reachable.
• Speed improves in the weak-signal room without repeated dropouts or roaming failures.

If clients receive an address beginning with 169.254, they have not received a DHCP lease. Restart the Edimax unit, check the wireless password and confirm that the main router’s DHCP pool has free addresses. If internet access works but local devices cannot be reached, look for AP isolation, guest network selection or router firewall rules.

Place the extender for reliable coverage

After configuration, use the signal indicator on the Edimax unit or a Wi-Fi analysis app to select the final location. The extender needs a strong connection to the router as well as a useful signal for nearby devices. A position beside a microwave, cordless phone base or large metal cabinet can create interference even when the distance looks reasonable.

In Sydney or Melbourne apartments, nearby networks can crowd the 2.4 GHz band, particularly in dense blocks. Selecting a less congested channel on the main router may help, but automatic channel selection is often adequate if the router regularly scans the environment. On 5 GHz, a shorter range and walls between floors can matter more than channel congestion.

For a long single-storey house, place the extender near the centre of the area requiring coverage rather than at the furthest room. For a detached home using NBN fibre or fixed wireless, the NBN connection type does not change the extender procedure; the relevant equipment is the local router connected to the NBN service. Internet speed at the modem is not the same as wireless speed at the far end of the property.

Keep the extender’s firmware current when the manufacturer provides a compatible update. Firmware updates can improve security, roaming and support for newer wireless encryption, but download the correct file for the exact model and hardware revision. Do not interrupt power during an update.

Keep the network easy to troubleshoot

Label the extender’s location and record its management address, operating mode and firmware version. Keep a note of the router’s DNS settings as well. This is useful when replacing an ISP gateway, changing from one NBN provider to another, or diagnosing why a filtering service has stopped recording queries.

If the router is replaced, the wireless name and password may change even when the internet service remains active. The Edimax extender may then continue broadcasting an old network without a usable connection. Re-run the pairing process or update the upstream wireless details through the setup page rather than changing DNS first.

A factory reset is a last resort because it removes the wireless profile and custom settings. Use the reset procedure in the Edimax manual, allow the unit to restart fully, and configure it again near the router. Afterward, test with one device before relocating the extender or reconnecting smart lights, cameras and other household equipment.

The essential point is that custom DNS normally belongs on the main router or the network’s chosen DNS server. Configure the Edimax as a bridge or repeater, let the main router provide IP addresses and DNS, and verify those details on a device connected through the extended signal.