Re: Native vlan and allowed vlan

"When you remove VLAN 1 from a trunk port, the interface continues to sent
and receive management traffic, for example, Cisco Discovery Protocol (CDP),
Port Aggregation Protocol (PAgP), Link Aggregation Control Protocol (LACP),
DTP, and VTP in VLAN 1."

http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12.2_46_se/configuration/guide/swvlan.html#wp1150302

On Tue, Sep 1, 2009 at 1:32 PM, 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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