[c-nsp] untagged to QinQ switch ports

[Laurent Geyer]

On Fri, Feb 13, 2009 at 2:05 PM, Ross McConner <rmcconner at gmail.com> wrote:
> Maybe I'm just hitting my head against a wall and therefore can't see the
> answer..
>
> I'm looking for a way to take a non-trunked ethernet port and encapsulate
> any of the L2 packets into a double-tagged dot1q vlan.
>
> Basically my provider gives me a single circuit with 802.1q and then tunnels
> vlans to different destinations (most likely via xconnects).  At this
> (small) location I don't need to have all the vlans in use, just specific
> ones - so I'm looking for a way to do it without installing a 2nd switch in
> front of the cisco just to create the inner vlan tags, which is what all of
> cisco's documentation assumes.

Here is something I've seen working before.

interface fa0/1
  switchport
  switchport access vlan <Provider VLAN>
  switchport mode dot1q-tunnel

interface fa0/1
   switchport