From: James Ventre (messageboard@ventrefamily.com)
Date: Sat May 07 2005 - 20:57:07 GMT-3
That depends on your trunking configuration.
Set you trunk to desirable, and you can have a native vlan if you're
trunking, and a different vlan if it's not trunking. The native VLAN on
a trunk is just the VLAN that is untagged. If you hardcode the trunk to
"on" then your explaination applies.
Here is an example:
interface FastEthernet0/2
switchport access vlan 5
switchport mode dynamic desirable
!
If you're trunking, the native VLAN is 1. If you're not trunking, the
access VLAN is 5.
You don't have to have an "untagged" native vlan on 802.1Q trunks - this
command makes all vlans tagged:
switch(config)#vlan dot1q tag native
James
Brant I. Stevens wrote:
>The native VLAN of a trunk link is the port assignment of a given
>port/interface should it not be trunking. With 802.1q, frames originating
>from the native vlan are not tagged with a VLAN assignment as they cross the
>trunk link; you don't really have a choice to not use a native VLAN. If you
>do not explicitly set the native VLAN of a trunk, it is left in the default
>VLAN (1).
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