07-08-2026 10:02 AM
When creating the native VLAN (3035) as shown in the image.
It reverts to the default VLAN (1) upon saving.
Could this be a bug?
WLC 9800 Version 17.18.3
07-08-2026 10:07 AM
- @CSCO12971535 Check the logs on the controller when trying and or fall back to the CLI
for these configuring operations because you may get more informative
fault messages immediately
M.
07-08-2026 10:32 AM - edited 07-08-2026 10:33 AM
Did you added VLAN before you using it ?
Open your Flex Profile properties pane (Configuration > Tags & Profiles > Flex).
Click on the VLAN tab (located next to the General tab).
Click the +Add button inside the VLAN grid.
Fill in the parameters:
VLAN Name: Native-3035 (Or any descriptive name)
VLAN ID: 3035
Click Save
Then Add what you desired to add.
Make sure switch side same configuration replicated. native VLAN in trunk
=====️ Preenayamo Vasudevam ️=====
***** Rate All Helpful Responses *****
07-08-2026 11:41 AM
@balaji.bandi You don't need to create a VLAN; I have VLAN 120 defined in my FlexProfile, and I don't have that VLAN created on the WLC. This looks like a bug to me.
@CSCO12971535 Try configuring it using a different browser.
07-08-2026 12:20 PM
I am not sure It looks like a different outcome or Code , but with 17.9. X, I created a VLAN, and it worked for me. (There is no harm in trying that option)
=====️ Preenayamo Vasudevam ️=====
***** Rate All Helpful Responses *****
07-11-2026 09:32 AM - edited 07-11-2026 09:34 AM
It works fine for me on 17.18.3 with Firefox 151.0.2 without having to define the VLAN.
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