Native VLAN Mismatch

[it]

Hello,

We are currently getting this error on 1 of our switches:

NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on gi50, with xxx GigabitEthernet2/0/10

And this error on our other switch:

NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on gi1, with xxx GigabitEthernet1/0/10

With xxx being the other switch it's connected to.

How do I configure that VLAN to match?

Thanks

[Jon Marshall]

If these are trunk ports you need to set the same vlan on both ends to be the native vlan.

The command to set the native vlan on a trunk is -

int <x/y>
switchport trunk native vlan <vlan ID>

Jon

[it]

Hi Jon,

Thank you for replying!

So if the VLAN for switch xxx is 28 and the default VLAN for the cisco switch in question is 1, I would need to change the native VLAN to 28 on the port of the cisco switch in question?

Thanks

[Jon Marshall]

You just need to make sure the native vlan is the same on either end of the trunk link.

I don't know what you want to use as the native vlan but whichever vlan both switches must agree on it for the specific trunk link.

Jon

[it]

Got it. Thanks