%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected

[htech460647724]

Hello Guys, 

I'm encounter the following error always with one of my new cisco switch sg250 that i just configured for my LAN. 

I just need some help of how can i solve. Is the following error can cause any networking traffic drops or not. please help. 

03-Sep-2021 13:23:41 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi15.

03-Sep-2021 13:22:30 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi16.

03-Sep-2021 13:19:05 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi10.

03-Sep-2021 13:18:41 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi15.

03-Sep-2021 13:17:30 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi16.

03-Sep-2021 13:14:05 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi10.

03-Sep-2021 13:13:41 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi15.

03-Sep-2021 13:12:30 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi16.

03-Sep-2021 13:09:05 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi10.

03-Sep-2021 13:08:41 :%CDP-W-NATIVE_VLAN_MISMATCH: Native VLAN mismatch detected on interface gi15.

[balaji.bandi]

if this is trunk link - You make sure that the native VLAN is the same on both sides of the links, If not you see those error messages.

[htech460647724]

Thanks for your response. could you please provide any steps. your help will much appreciated. thanks 

[htech460647724]

Yes. they are all trunk lines. could you please help

[balaji.bandi]

check what is the other side native VLAN, so make sure both should match.

switchport trunk native vlan  X  ( X should match both the side to eliminate that error)

[dmancini1983]

Hola, yo encontré la solución, en los puertos troncales donde tienes otra vlan nativa, para los equipos CB220 tiene que estar la interfaz del puerto configurada en General, no en trunk y pasar la VLan 1 como Untagged y la vlan que tengas como acceso marcarla como Untagged y PVID. Con eso no pasaría mas la notica de Mismacth.