Stacked VLANS (Q-in-Q)

[dvtestguy]

I have a config question about stacked vlans over a Trunk.

I have a 4948 (VTP Client) that supports stacked vlans, and a 6506 (VTP Server) that doesn't. The primary communication between the two is a VTP Trunk.

I need communication to the outside world (a CE environment) through the 6506 switch, which has a 7513 NAT'ing out.

My question is...

I want to be able to configure and implement (Q-in-Q) over the primary Trunk. I also configured another Trunk, but wasn't sure if it should be a Tunnel?

For example, VLAN 801 would be the bottom VLAN and accessing VLAN 800 to get out to the CE via the 7513.

4948 -------------- 6506 ---- 7513 NAT
g1/47 --- Trunk --- g3/1
g1/8 ---- Tunnel --- f4/8

Please see below for configs...


Cisco4948#sh run int g1/47
Building configuration...

Current configuration : 241 bytes
!
interface GigabitEthernet1/47
description trunk to Cisco 6506
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-7,9-11,13-800,802-4094
switchport mode trunk
switchport nonegotiate
spanning-tree portfast trunk
end

Cisco4948#sh run int g1/8
Building configuration...

Current configuration : 142 bytes
!
interface GigabitEthernet1/8
switchport access vlan 801
switchport mode dot1q-tunnel
no cdp enable
spanning-tree bpdufilter enable
end
Cisco6500IOS#sh run int g3/1
Building configuration...

Current configuration : 265 bytes
!
interface GigabitEthernet3/1
description Trunk Port to Cisco 4948 QT-Test
switchport
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1-7,9-11,13-799,801-4094
switchport mode trunk
switchport nonegotiate
spanning-tree portfast trunk
end

Cisco6500IOS#sh run int f4/8
Building configuration...

Current configuration : 169 bytes
!
interface FastEthernet4/8
switchport
switchport access vlan 801
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 800
switchport mode trunk
end