[c-nsp] vlan tagging question

[Eric Van Tol]

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Chad Whitten
> Sent: Wednesday, May 14, 2008 9:10 AM
> To: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] vlan tagging question
>
> Thanks for the reply.
>
> The device can understand 802.1q and can tag/untag frames.  The cisco
> is outside my control and I have very little experience with the
> native vlan setting.  My thinking is that the cisco config should be
> something like
>
> switchport mode trunk
> switchport trunk encapsulation dot1q
> swtitchport allowed vlan 100,201
> (some of that syntax may not be correct)
>
> and that if I am doing tagging on the access device, the native vlan
> part of the config is not needed
>

Only seeing this part of the config, the switch will tag both 100 and 201 and allow these over the trunk.  Whether or not 201 is *actually* tagged, I believe, depends on if the "vlan dot1q tag native" setting is configured on the Cisco *and* if "switchport trunk native vlan 201" is configured.

-evt