[c-nsp] 3560g switch - tagged vlans and untagged frames

[Damian Higgins]

Hi,

Thanks, I was under the impression that native vlan is global. Great stuff
then, this setup also works on cisco :).

Regards


On Wed, Apr 10, 2013 at 10:08 AM, Gert Doering <gert at greenie.muc.de> wrote:

> Hi,
>
> On Tue, Apr 09, 2013 at 10:32:53PM +0300, Damian Higgins wrote:
> > How about this scenario. Let's say you want a VLAN tagged on all the
> ports,
> > but also want different untagged VLANs on those ports (e.g. port 10
> tagged
> > vlan 306 and untagged vlan 6, port 11 tagged vlan 306 and untagged vlan
> 7).
> > So native VLAN is out of question here since all ports would be untagged
> in
> > the same VLAN ID.
>
> No.  Native VLAN is per-port, and would do exactly this: specify the VLAN
> that is assigned to untagged incoming frames, and that is sent untagged
> for outgoing frames.
>
> > Can you please test the following setup and tell me if it works? :
> >
> > interface GigabitEthernet0/10
> >    description testing cisco vlans
> >    switchport trunk encapsulation dot1q
> >    switchport trunk allowed vlan 306
> >    switchport mode trunk
> >    switchport access vlan 6
>
> "switchport access" is irrelevant for trunk mode, *plus* if you only
> allow "vlan 306", vlan 6 will not be sent, no matter whether tagged or not.
>
> gert
> --
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>