Re: metro vlan on provider switch (802.1q tunnel)

Another solution is to tag the native VLAN.

Regards,
Alexander Lim

On 17 Aug, 2012, at 12:26 AM, Tom Kacprzynski <tom.kac_at_gmail.com> wrote:

>
> I think this might help
> "When IEEE 802.1Q trunks are used in these core switches, the native VLANs
of the IEEE 802.1Q trunks must not match any native VLAN of the nontrunking
(tunneling) port on the same switch because traffic on the native VLAN would
not be tagged on the IEEE 802.1Q sending trunk port."
>
> source:
http://www.cisco.com/en/US/docs/switches/lan/catalyst3560/software/release/12
.2_44_se/configuration/guide/swtunnel.html#wp1008635
>
> So basically don't configure the access vlan on the dot1q tunnel to be the
same as the native vlan on your trunks to the rest of the SP network, as they
will never get tagged. The doc goes through an nice example and how to fix it.
Hope that helps.
>
> Thanks
>
> Tom Kacprzynski
> CCIE#36159
>
>
>
> On Fri, Aug 10, 2012 at 5:04 AM, Alexander Halim <cisco.alexand_at_gmail.com>
wrote:
> AFAIK, bcoz we use asymmetric trunk link between SP and customer, SP switch
port does not involve in customer's spanning tree. And it doesn't care the VID
that customer is using. It will tag all customer tagged frame with its port's
VID.
>
> Regards,
> Alexander Lim
>
> On 9 Aug, 2012, at 3:36 AM, "ccie.butcher" <ccie.butcher_at_gmail.com> wrote:
>
> > If same vlan number which is configured as a metro vlan (customer vlan)
is
> > coincidently also present in provider switch of a 802.1q tunneling
> > topology, would it be necessary to prun it on provider switches
interfaces.
> >
> >
> > --
> > Thanks and Regards
> >
> >
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Received on Sat Aug 18 2012 - 07:51:11 ART