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TL-MR3020 cannot set up a connection with no default gateway

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TL-MR3020 cannot set up a connection with no default gateway

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
TL-MR3020 cannot set up a connection with no default gateway
TL-MR3020 cannot set up a connection with no default gateway
2024-07-16 09:23:31
Model: TL-MR3020  
Hardware Version: V3
Firmware Version: Firmware Version:1.5.0 0.9.1 v0001.0 Build 211118 Rel.64060n

I'm using a TL-MR3020 with V3.20 hardware.

 

I am trying to set up a local WiFi Network for some devices to connect to - but I don't want to route internet traffic over it since there is no external connection.

 

I have set the LAN to be a static IP of 192.168.168.254, DHCP to be in the range 100 to 199 and default gateway and DNS to be 0.0.0.0

 

Lan Settings

 

However on my Mac when I connect I get give a default gateway and DNS of 192.168.168.254 - this happens both if I connect directly to the CAT5 connection or over WiFi.

 

 

Do I need to do something else to stop the DHCP giving out the default gateway and DNS addresses?

 

Thanks, Simon.

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3 Reply
Re:TL-MR3020 cannot set up a connection with no default gateway
2024-07-17 07:35:33 - last edited 2024-07-17 07:36:38

  @seast 

Hi,

 

May I know why you want to set it up that way? You dont want internet access and only want the devices communicate with each other within LAN?

 

You can try to set an unavailable IP address for gateway and DNS like 100.100.100.100, and test if it can help.

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Re:TL-MR3020 cannot set up a connection with no default gateway
2024-07-17 10:16:24 - last edited 2024-07-17 10:36:10

  @Sunshine 

So yes the reason I don't want a gateway is I have some smart watches that just need to connect to my laptop - they don't need to connect to the internet - so this is to set up a local WiFi network.

 

As you suggest setting the Default Gateway to 192.168.168.1 does seem to work - though interestingly when I do that rather than the Router showing up as 192.168.168.1 on the mac it show as there being no router at all.

 

So I think there is a bug in the MR3020 on how it is handling the Default Gateway parameter since what I am entering in the 3020 admin page is not being reflected at all in what the Mac is showing it is getting back from the DHCP server in the 3020.

 

So something very strange is going on with the 3020 - with the Default Gateway set to an unused address 192.168.168.1 when I plug the Cat5 connection into my laptop it does not come up as connected in the Mac network panel - but it is connected because I can still access the 3020 admin portal. I am not connected to it via WiFi on the laptop - I have turned WiFi off. I have tried two different WiFi adaptors on the Mac an both do the same thing. When I plug in a normal Cat5 cable to these that is connected to my home network they both work fine and come up as connected in the Mac panel. So whatever the 3020 is doing negotiating the CAT 5 connection with the Mac does not seem to be working correctly.

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#3
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Re:TL-MR3020 cannot set up a connection with no default gateway
2024-08-04 09:45:13

  @Sunshine Has there been any more information from tp-link on this?

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