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DScone's avatar
DScone
Star
Feb 14, 2018

Orbi RBR & RBS Ethernet Backhaul Help

I have Centurylink Fiber 1Gig up and 1 Gig down. In order to get rid of Centurylink's Modem/Router combo I had to utilize PPPOE and VLAN Tagging. I setup the VLAN Tagging on my TP Link Smart Switch (tl-sg108e) and plugged that straight into the ONT. I used Port 1 as the Tagged VLAN ID 201 and port 2 as the untagged port. I then applied PVID for port 1 and 2 for type 201. 

I successfully got this working with port 1 plugged into the ONT and port 2 plugged into the Orbi Router WAN (Yellow) port. I have the Orbi Satellite plugged into port 3 on the switch but it's not recognizing the Ethernet Backhaul. Can Ethernet Backhaul work if it is plugged into the WAN port when using a switch? Is there any kind of bridging configuration on the switch that I would need to do in order for the Satellite to recognize the backhaul? 

14 Replies

  • DScone

     

    I have two responses. First about your VLAN/network setup.

     

    If I understand correctly you have a managed switch with at least:

     

    • Port 1: Untagged for VLAN201
    • Port 2: Untagged for VLAN201

    Meaning, ports 1 and 2 are on the same VLAN if no 802.1q tags are included. They act as a 2 port switch.

     

    Now, you said you pugged your ONT (I assume the CenturyLink router/modem combo) into Port 1, and Port 2 into the Orbi WAN. On a separate broadcast domain (say, the default VLAN), you want to connect up all the Orbi's.

     

    If I follow all that correctly then answer to your question is: Absolutely, that should work as long as you're not using the Orbi's in AP mode (something else is doing DHCP + NAT).

     

    If you're using the Orbi's in AP mode, then things are a little different. In that case, you would put your router/DHCP device on the same VLAN as all the Orbi devices.


    My second response is about getting the Orbi's to recognize the wired backhaul... The short answer there is - "don't have high expectations". While netgear techinically supports a wired backhaul, the feature was released half-baked. The satellites attempt to auto-detect if they have access to the broadcast domain over ethernet, but it's not reliable. And, there's now way to tell a satellite to only use the wired backhaul.

     

    From your other post, it seems you've around found out that many other users are running into these issues.

    • Thank you for your response. Yes, I have found that the ethernet backhaul does not work 100% as others have found as well. My satellite is plugged into port 3 which is outside the VLAN and is an untagged port. The satalite doesn't recognize the ethernet backhaul and defaults to the wireless backhaul. This is to assume that ethernet backhaul can work over the WAN port on the Orbi Router. 

       

      Wonder if I should put port 3 into the same VLAN and PVID that both 1 and 2 are on? 

      • t_k's avatar
        t_k
        Luminary

        DSconewrote:

        Thank you for your response. Yes, I have found that the ethernet backhaul does not work 100% as others have found as well. My satellite is plugged into port 3 which is outside the VLAN and is an untagged port. The satalite doesn't recognize the ethernet backhaul and defaults to the wireless backhaul. This is to assume that ethernet backhaul can work over the WAN port on the Orbi Router. 

         

        Wonder if I should put port 3 into the same VLAN and PVID that both 1 and 2 are on? 


        The Orbi will only work with an ethernet backhaul over the WAN port if you're in AP (access point) mode, which is not the default. The default is "routed" mode  (where the Orbi hands out DHCP addresses and does NAT for your devices). From your answers, I think you're using "routed" mode. 

         

        This is important for your situation because in routed mode, the broadcast domains of the WAN port and the remaining ports are necessarily different. You could think of it like this: the "untagged" VLAN for the WAN port is a different VLAN than the "untagged" VLANs for the remaining ports.

         

         

        Now, you need each Orbi sattelite that you want to use with a wired backhaul to be connected to the router on the same broadcast domain (VLAN). In routed mode, here's one way would accomplish this in your setup.

         

        On the switch: 

        • Port 1: Untagged for VLAN 201, your modem
        • Port 2: Untagged for VLAN 201, your Orbi Router's WAN port
        • Port 3: Untagged for VLAN 1, A non-WAN port on your Orbi router
        • Port 4: Untagged for VLAN 1, One of your Orbi Sattelites
        • Port 5: Untagged for VLAN 1, A different Orbi Sattelite

        Notice, this has your Orbi router plugged into the switch twice, and each port it is plugged into has a different untagged VLAN. This is correct for "routed mode".

         

        If you're using "Access Point" mode, then the answer is different. Let me know and I'll give  you an example of what you would do for that instead.