topic Re: Cannot add a port to Default VLAN in ExtremeSwitching (EXOS/Switch Engine)

Cannot add a port to Default VLAN

ExtremeNewbie — Mon, 05 Jan 2026 16:34:07 GMT

Hello Community,

I am having an issue trying to add a port to our Default VLAN which I have done successfully on many occasions in the past.

I have taken the port out of Netlogin (dot1x and mac).

I then try to add the port to the Default VLAN as untagged and have the message below.

The port XX is already added dynamically by an application and can't be added manually.

I have tried removing the port from the Default VLAN in case this was the issue and have the message

Port XX is added by Network login and can't be removed manually.

The port is not using Netlogin that I can see in the config so I don't know why the message above appears.

I am using EXOS 33.3.1.4.

Any suggestions gratefully received.

Thanks,

Re: Cannot add a port to Default VLAN

Ty_Izzet — Tue, 06 Jan 2026 16:45:15 GMT

Hello. It does sound if the port is being tied down by a feature. This commonly is netlogin or policy though please try the following to help narrow down or isolate the issue:

1) If policy is enabled, disable policy and then see if the port can be removed. There could be a policy rule also assigned to the port.

2) Further review the 'show configuration' output to see is any features being used that could be dynamically assigning or using the port in question.

3) Also check the 'show VLAN' output to see if dynamic VLAN is assigned

4) Try to clear the netlogin state using the command: clear netlogin state port <port-number>

5) Disconnect any connection to the port and disable the port before adding/removing the port from the VLAN

Re: Cannot add a port to Default VLAN

ExtremeNewbie — Wed, 14 Jan 2026 09:52:33 GMT

@Ty_Izzet thanks for your reply. I managed to fix this by restarting the switch and then using the disable netlogin command for the port concerned for DOT1x and MAC.

I am not sure why this did not work initially as I have done this on a number of occasions on various switch stacks.

Many Thanks,