[c-nsp] QinQ Question

[Charles Regan]

Hi, I am trying to configure a QinQ link between two building.

Building1 -- ServiceProvider -- Building2

ServiceProvider won't do QinQ in their equipment.

In Building1 and Building2 there is only one 3560 switch.

I did some test and it's working with a loop between gig0/23 and gig0/24
but i am not sure if it's the correct way.
Will having a config like this be alright ? I see packet loss from time to
time ...

interface GigabitEthernet0/22
 description SP-UPLINK
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 201
 switchport mode trunk
!
interface GigabitEthernet0/23
 description QinQ (looped to gi0/24)
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1-200,202-4094
 switchport mode trunk
!
interface GigabitEthernet0/24
 description QinQ (looped to gi0/23)
 switchport access vlan 201
 switchport mode dot1q-tunnel
 mls qos trust cos
 l2protocol-tunnel cdp
 l2protocol-tunnel stp
 l2protocol-tunnel vtp
 no cdp enable