Change of subnet mask: system network protocol config mit ne NONE ?

[yvan-lab]

Dear all,

I have changed the subnet mask on the router from 255.255.255.0 to 255.255.252.0 because I need more addresses. This caused issues: the computers that were assigned one of the newly available IPs were still able to connect to the wifi router, but not to the internet.

I use an XS716T. In System > Management > IP Configuation I saw that I should probably adjust the subnet mask as well. However, trying this throws an error:

"Error! System Network Config protocol must be NONE to set IP address."

Does anyone know how to fix this?

Thank you in advance.

[schumaku · Accepted solution]

Is the XS716T configured to Current Network Configuration Protocol for DHCP (Dynamic) probably? You need to configure it to a static IP to override the DHCP assigned Subnet Mask. Assuming your router is serving DHCP, and the DHCP server is correctly configured, you can consider to reboot the switch. 

The settings are indeed on System - Management - IP Configuration

[schumaku · Accepted solution]

Is the XS716T configured to Current Network Configuration Protocol for DHCP (Dynamic) probably? You need to configure it to a static IP to override the DHCP assigned Subnet Mask. Assuming your router is serving DHCP, and the DHCP server is correctly configured, you can consider to reboot the switch. 

The settings are indeed on System - Management - IP Configuration

[yvan-lab]

Thank you, @schumaku 

The switch is indeed cofigured for DHCP.

The first screenshot below shows the status quo.

Do I understand cotrrectly that you suggest I set the settings as in the second screenshot?

Or are you suggesting that I could first simply try to reboot the switch and see if it sets itself correctly?

Thank you again for taking the time.

[yvan-lab]

I rebooted the switch and the switch has set the correct configuration. Thank you very much. 🙂

The WLAN still does not work, though. (I can connect to the router but not to the internet.) This might be a separate problem with the wlan access point...  (It's an ASUS.)

If you have a tip in that domain as well, I am all ears. Will try to reboot that as well.

Thank you very much for your help so far.

[schumaku]

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@yvan-lab wrote:

I rebooted the switch and the switch has set the correct configuration. Thank you very much.

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It's in general much easier to deal with DHCP instead of fixing IP configs which can and will change on the next re-design.

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@yvan-lab wrote:

The WLAN still does not work, though. (I can connect to the router but not to the internet.) This might be a separate problem with the wlan access point...  (It's an ASUS.)

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A little bit vague what makes up the WLAN there for you. A wireless AP is typically a bridge connecting Ethernet and WiFi - for this purpose, an exact configuration might not be required. A little bit different of course when it comes to the AP management. What does provide the Internet on your installation? Any additional IP routing involved on the XS716T for example?

[yvan-lab]

A reboot of the AP and of the router solved the problem.

My router/model does not privide wifi. (Well, it does, but it's installed in the cellar, so I don't use that). I have wired ethernet throughout the house. The Uplink-AP is connected to the router by wire, and there are a few slave wifi APs that are connected to the Uplink-AP also through wire.

Thank you agein 🙂  I learned something.