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How to install ER605 Multi-WAN router with Starlink and NBN Broadband

On this page we show how we used a TP-LINK ER605 Omada Gigabit Multi-WAN Router (“ER605”) to combine our new Starlink service with our existing NBN broadband service. The idea is that Starlink will be the primary service and NBN will be a backup ("Failsafe") if Starlink goes down.

Summary | Existing network setup before Starlink | Getting broadband working through the ER605 | Change WiFi router to be a Bridge | Connecting Starlink | Setting Load Balancing | Using the AUX port on the SL WiFi unit | Contact us


Existing network setup before Starlink

Original broadband

Getting broadband working through the ER605

  1. Power up ER605, connect PC ethernet port directly to LAN port on ER605. Open browser at to open welcome screen
  2. Setup username and password, first time.
  3. Network > WAN: Set WAN and WAN/LAN1 as WAN ports (we set up WAN/LAN2 as a WAN as well in case we need it later).
    Set WAN mode
  4. Click on WAN tab. Set this up with the WAN requirements for your broadband service. In our case (for NBN) we used the following
    • Connection Type: PPPoE
    • Username and password: as required by provider (for NBN there is no password so just enter anything, not a blank)
    • Connection mode: Connect Automatically
    • MTU: 1492
    • Primary and secondary DNS:
    • VLAN: Enable, set VLAN ID=2 (apparently this is important for NBN)
    • Secondary connection: None
    Click “Save”.
    WAN settings for broadband
  5. Plug NBN cable into WAN port of ER605 (that’s the cable that previously plugged into the WAN port of your WiFi router).
  6. Select Network > LAN. Add a new LAN (click “+” Add).
  7. Set IP address to, Subnet mask = and VLAN=1.

    LAN settings

  8. Enable DHCP and set starting/ending range to (adjust to suit)


  9. Apply/save all changes and power cycle ER605.
  10. Log in to LAN port on and check the ER605 works on new subnet address.

Change WiFi router to be a Bridge

  1. Separately connect PC ethernet port to a LAN port on the BILLION router (this should still be setup for NBN).
  2. Log in on old and check you see the login and setup screen.
  3. Select Configuration > WAN and change interface type from PPPoE to “Bridge”. Use the “Edit” button on the ETH interface line.

    Billion WAN as Bridge

  4. Select Configuration > LAN and set IP address to (we were already using for another access port) with subnet mask, and disable DHCP server.

    Billion LAN

    The IP address here should be different from any other static IP address used, including (the router) and any other static IP address used by other devices (in our case here and
    IMPORTANT: All static IP addresses must be excluded from the range of IP addresses allowed by the DHCP server.
  5. Leave your Wireless settings unchanged.
  6. Apply all changes and power cycle BILLION router.
  7. Connect cable from ER605 LAN port to a LAN port on the BILLION router (not the red WAN port).
  8. From a computer on your LAN network, you should be able to login directly to the ER605 using your computer’s browser at
  9. Select Network > WAN and open WAN tab. Click “Connect”.
  10. Check Status > System Status and it should show that Interface WAN has Connection Status “Link Up”.
  11. Everything on your existing LAN network and WiFi on the 192.168.5/24 subnet should now work exactly as before, using your broadband provider.

Connecting Starlink

  1. Install Starlink (SL) including white SL WiFi unit using the smart phone app and make sure it is working.
    • Use speedtest.net to check the speed on your smartphone. We typically get 150-300 Mbps down and 20-30 Mbps up.
    • Starlink uses the subnet 192.168.1/24

    Basic Starlink

  2. Now disconnect the white SL WiFi unit. We will not be using it!
  3. Connect the white cable from the SL power unit directly into the WAN/LAN1 port on the ER605.
  4. Configure WAN/LAN1 with Connection Type “Dynamic IP” with Primary DNS and secondary (there may be better alternatives for DNS but these work for us).
    • Leave VLAN disabled and MTU at 1500.

    WAN Starlink

  5. Click Save and Connect.
  6. Check Status > System Status and this should show that both WAN and WAN/LAN1 have connection status “Link Up”.

    System Status

  7. Your WiFi devices and smartphones should now work on your existing WiFi network settings and your wired PCs should work as before, but these should now be giving you Starlink speeds. Yahoo!

    Basic Starlink

  8. Note that you lose the SL WiFi network and the SL app will complain about a non-Starlink WiFi router, so you can’t see statistics (but sometimes it works).

Setting Load Balancing

  1. Select Transmission > Load Balancing

    Load Balancing

  2. Disable Load Balancing and all other options under Basic Settings. Open the Link Backup tab.
  3. Add a new Rule by clicking the “+” Add button.
  4. Set Primary WAN: WAN/LAN1 (that’s Starlink)
    Set Backup WAN: WAN (that’s our NBN broadband)
    Set Mode = Failover (Enable backup link when any primary WAN fails)
    Check the Enable box.

    Link backup

  5. Click OK.
  6. Try disconnecting the white SL cable and check that the Failover works with no loss of connection and a speedcheck shows your old NBN speeds.
    • Be aware that it takes a short while for SL to resume when you reconnect it.

Addendum 2022-04-10

See this article er605 doesn't detect WAN port disconnect and doesn't restore connection back.

Note there is a later firmware available ER605(UN)_V1_1.2.0 Build 20220114 published 2022-02-11 (scroll down to find Firmware and Download button).

We followed the advice in the above article. Choose Transmission > Load Balancing > Online Detection and click the edit button under Operation for both ports (WAN and WAN/LAN1). Then set Mode to Manual for both ports as shown entering "" for Ping and DNS lookup .

Online Detection


Try turning it off and on again.

Using the AUX port on the SL WiFi unit

You can actually leave the SL WiFi unit in place and connect the AUX port to the WAN/LAN1 port on the ER605 BUT we found that the Failover feature did not work if SL went offline.

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This page first published 17 March 2022. Last updated 10 April 2022