Solved: Re: Vlan interface is down at C9800

interfacedy · ‎07-13-2021

Please see the below. Why the vlan20 is down? Thanks

Leo Laohoo · ‎07-14-2021

conf t
 interface vlan 20
 no autostate
end

Mark Elsen · ‎07-14-2021

- Post the output of : show run int vlan20

M.

-- ' Listen to the wind, it talks
Listen to the silence, it speaks
Listen to your heart, it knows
Ganado Mucho (1809 to 1893 ) Navajo Indian

Leo Laohoo · ‎07-14-2021

conf t
 interface vlan 20
 no autostate
end

Arshad Safrulla · ‎07-14-2021

Create the L2 VLAN

!

vlan 20

name XXXX

!

interfacedy · ‎07-14-2021

Leo is right. Issue resolved. Thank you

Why other vlan could be up without this command?

Leo Laohoo · ‎07-14-2021

@interfacedy wrote:

Why other vlan could be up without this command?

Because no ports are assigned to VLAN 20.

VLAN 10 is UP because it is probably in the Trunk already while VLAN 20 is not in the Trunk.

interfacedy · ‎07-14-2021

Right, Thank you very much!