[c-nsp] vlan tagging question

[Chad Whitten]

Thanks all.  The vlan dot1q tag native was what we needed.

On Wed, May 14, 2008 at 6:21 PM, Brad Henshaw <brad.henshaw at qcn.com.au> wrote:
> Chad Whitten wrote:
>
>> I have a non-cisco access device connecting to a cisco 3750 via gigE.
>> The 3750 interface is set for 802.1q trunking with two vlans - 100 and
>> 201.  Vlan 201 is the native vlan on the cisco interface.  Should the
>> access device be tagging packets on vlan 201 or leaving them untagged?
>
> It should be leaving VLAN 201 packets untagged unless you've set
> 'vlan dot1q tag native' on the 3750.
>
> We avoid using the native VLAN for customer traffic and also tag
> everything, everywhere in order to avoid accidental propagation of
> BPDUs or other L2 control protocols to places they don't belong.
>
> Regards,
> Brad
>



-- 
Chad Whitten
Metro Network Solutions
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cwhitten at metronetsys.com