Re: Native vlan and allowed vlan

It will not allow traffic for VLAN1, however certain "control protocol"
traffic such as CDP/VTP/DTP will still be carried on VLAN 1 and there is
nothing you can really do about it. Even if you prune VLAN1 it will still
be there.

On Tue, Sep 1, 2009 at 4:02 AM, Julio Carrasco <julio.carrasco_at_ya.com>wrote:

> Hi guys,
>
> Just one small question.
>
> If I leave the default native vlan (vlan 1), configured on a trunk, and I
> issue the "switchport trunk allowed vlan 21,43",
> Does the traffic for vlan 1 still crossing the trunk?, or is blocked by the
> swithport trunk allowed vlan?
>
> Thanks in advance.
> Best regards.
>
>
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Regards,
Joe Astorino - CCIE #24347 R&S
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