Q-in-Q Basic Port Configuration
Q-in-Q tunneling allows service providers on Ethernet access networks to extend a Layer2 Ethernet connection between two customer sites. Q-in-Q tunneling can also be used to segregate or bundle customer traffic into fewer VLANs, or different VLANs, by adding another layer of 802.1Q tags.
Q-in-Q tunneling is useful when there are overlapping VLAN IDs because the 802.1Q VLAN tags are prepended by the service VLAN tag. The L2/L3 implementation of Q-in-Q tunneling supports the IEEE 802.1ad standard.
The Q-in-Q tunneling external mode belongs to basic Q-in-Q, while the Q-in-Q tunneling internal mode belongs to selective Q-in-Q.
Configuring the Q-in-Q Tunneling Internal/External Mode
By default, Q-in-Q is disabled. User can enable it as shown below:
admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling mode internal admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling mode external admin@XorPlus# commit Commit OK. Save done. admin@XorPlus#
Configuring Q-in-Q Tunneling to Map Ingress VLANs to Service VLANs
Selective Q-in-Q tunneling allows user to add different customer VLAN tags based on different service VLAN tags.
admin@XorPlus# set vlans vlan-id 100 admin@XorPlus# set vlans vlan-id 200 admin@XorPlus# set vlans vlan-id 300 admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching port-mode trunk admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching vlan members 100 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching vlan members 200 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching vlan members 300 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling mode internal admin@XorPlus# set vlans dot1q-tunneling ingress t1 from untag enabled true admin@XorPlus# set vlans dot1q-tunneling ingress t1 then customer-vlan 10 admin@XorPlus# set vlans dot1q-tunneling ingress t1 then service-vlan 100 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling ingress t1 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling ingress t2 from one-tag customer-vlan-list 20 admin@XorPlus# set vlans dot1q-tunneling ingress t2 then service-vlan 200 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling ingress t2 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling ingress t3 from one-tag customer-vlan-list 30 admin@XorPlus# set vlans dot1q-tunneling ingress t3 then service-vlan 300 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling ingress t3 admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# admin@XorPlus# run show interface gigabit-ethernet ge-1/1/1 dot1q-tunneling Dot1q Tunneling Mode: none, Ether Type: 0x8100 Ingress: t1 Untagged-type Enabled: true One-tagged-type Customer Vlan: Double-tagged-type Service Vlan: 0 New Service Vlan: 100 New Customer Vlan: 10 Ingress: t2 Untagged-type Enabled: false One-tagged-type Customer Vlan: 20 Double-tagged-type Service Vlan: 0 New Service Vlan: 200 New Customer Vlan: 0 Ingress: t3 Untagged-type Enabled: false One-tagged-type Customer Vlan: 30 Double-tagged-type Service Vlan: 0 New Service Vlan: 300 New Customer Vlan: 0 admin@XorPlus#
Configuring Q-in-Q Tunneling Egress Pop Service VLANs
Selective Q-in-Q tunneling allows user to delete different customer VLAN tags based on different service VLAN tags.
admin@XorPlus# set vlans vlan-id 100 admin@XorPlus# set vlans vlan-id 200 admin@XorPlus# set vlans vlan-id 300 admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching port-mode trunk admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching vlan members 100 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching vlan members 200 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching vlan members 300 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching native-vlan-id 100 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling mode internal admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t1 from customer-vlan 10 admin@XorPlus# set vlans dot1q-tunneling egress t1 from service-vlan 100 admin@XorPlus# set vlans dot1q-tunneling egress t1 then action none admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling egress t1 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t2 from customer-vlan 20 admin@XorPlus# set vlans dot1q-tunneling egress t2 from service-vlan 200 admin@XorPlus# set vlans dot1q-tunneling egress t2 then action one admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling egress t2 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t3 from customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling egress t3 from service-vlan 300 admin@XorPlus# set vlans dot1q-tunneling egress t3 then action one admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling egress t3 admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# admin@XorPlus# run show interface gigabit-ethernet ge-1/1/1 dot1q-tunneling Dot1q Tunneling Mode: internal, Ether Type: 0x8100 Egress: t1 Service Vlan: 100 Customer Vlan: 10 Action: Strip both tags Egress: t2 Service Vlan: 200 Customer Vlan: 20 Action: Retain the customer vlan tag Egress: t3 Service Vlan: 300 Customer Vlan: 30 Action: Retain the customer vlan tag admin@XorPlus#
Q-in-Q Configuration Example
The configuration of Q-in-Q is shown in Fig. 4-2.Â
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Figure 4-2.Q-in-Q configuration.
Configuration on Provider A
Configure VLAN 100 as the default VLAN of Gigabit Ethernet ge-1/1/1, and enable the Q-in-Q tunneling internal mode on Gigabit Ethernet ge-1/1/1.
Then, configure the untagged frames received by the port with the customer VLAN tag 30 and service VLAN tag 100.
Finally, configure the customer VLAN tag 10 frames received by the port with the service VLAN tag 100.
admin@XorPlus# set vlans vlan-id 100 admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching native-vlan-id 100 admin@XorPlus# set vlans dot1q-tunneling ingress t1 from untag enabled true admin@XorPlus# set vlans dot1q-tunneling ingress t1 then customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling ingress t1 then service-vlan 100 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling ingress t1 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling ingress t2 from one-tag customer-vlan-list 10 admin@XorPlus# set vlans dot1q-tunneling ingress t2 then service-vlan 100 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling ingress t2 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t3 from customer-vlan 10 admin@XorPlus# set vlans dot1q-tunneling egress t3 from service-vlan 100 admin@XorPlus# set vlans dot1q-tunneling egress t3 then action one admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling egress t3 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t4 from customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling egress t4 from service-vlan 100 admin@XorPlus# set vlans dot1q-tunneling egress t4 then action none admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling egress t4 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling mode internal admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# run show interface gigabit-ethernet ge-1/1/1 dot1q-tunneling Dot1q Tunneling Mode: internal, Ether Type: 0x8100 Ingress: t1 Untagged-type Enabled: true One-tagged-type Customer Vlan: Double-tagged-type Service Vlan: 0 New Service Vlan: 100 New Customer Vlan: 30 Ingress: t2 Untagged-type Enabled: false One-tagged-type Customer Vlan: 10 Double-tagged-type Service Vlan: 0 New Service Vlan: 100 New Customer Vlan: 0 Egress: t3 Service Vlan: 100 Customer Vlan: 10 Action: Retain the customer vlan tag Egress: t4 Service Vlan: 100 Customer Vlan: 30 Action: Strip both tags admin@XorPlus#
Configure VLAN 200 as the default VLAN of Gigabit Ethernet ge-1/1/2, and enable the Q-in-Q tunneling internal mode on Gigabit Ethernet ge-1/1/2.
Then, configure the untagged frames received by the port with the customer VLAN tag 30 and service VLAN tag 200.
Finally, configure the customer VLAN tag 20 frames received by the port with the service VLAN Tag 200.
admin@XorPlus# set vlans vlan-id 200 admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching native-vlan-id 200 admin@XorPlus# set vlans dot1q-tunneling ingress t5 from untag enabled true admin@XorPlus# set vlans dot1q-tunneling ingress t5 then customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling ingress t5 then service-vlan 200 admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling ingress t5 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling ingress t6 from one-tag customer-vlan-list 20 admin@XorPlus# set vlans dot1q-tunneling ingress t6 then service-vlan 200 admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling ingress t6 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t7 from customer-vlan 20 admin@XorPlus# set vlans dot1q-tunneling egress t7 from service-vlan 200 admin@XorPlus# set vlans dot1q-tunneling egress t7 then action one admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling egress t7 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t8 from customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling egress t8 from service-vlan 200 admin@XorPlus# set vlans dot1q-tunneling egress t8 then action none admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling egress t8 admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling mode internal admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# run show interface gigabit-ethernet ge-1/1/2 dot1q-tunneling Dot1q Tunneling Mode: internal, Ether Type: 0x8100 Ingress: t5 Untagged-type Enabled: true One-tagged-type Customer Vlan: Double-tagged-type Service Vlan: 0 New Service Vlan: 200 New Customer Vlan: 30 Ingress: t6 Untagged-type Enabled: false One-tagged-type Customer Vlan: 20 Double-tagged-type Service Vlan: 0 New Service Vlan: 200 New Customer Vlan: 0 Egress: t7 Service Vlan: 200 Customer Vlan: 20 Action: Retain the customer vlan tag Egress: t8 Service Vlan: 200 Customer Vlan: 30 Action: Strip both tags admin@XorPlus#
Configure VLAN 100/200 as the trunk port of Gigabit Ethernet te-1/1/49, and enable the Q-in-Q tunneling internal mode.
admin@XorPlus# set interface gigabit-ethernet te-1/1/49 family ethernet-switching port-mode trunk admin@XorPlus# set interface gigabit-ethernet te-1/1/49 family ethernet-switching vlan members 100 admin@XorPlus# set interface gigabit-ethernet te-1/1/49 family ethernet-switching vlan members 200 admin@XorPlus# set interface gigabit-ethernet te-1/1/49 family ethernet-switching dot1q-tunneling modeinternal admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# run show interface gigabit-ethernet te-1/1/49 dot1q-tunneling Dot1q Tunneling Mode: internal, Ether Type: 0x8100
Configuration on Provider B
Configure VLAN 100 as the default VLAN of Gigabit Ethernet ge-1/1/1, and enable the Q-in-Q tunneling internal mode on Gigabit Ethernet ge-1/1/1.
Then, configure the untagged frames received by the port with the customer VLAN tag 30 and service VLAN tag 100.
Finally, configure the customer VLAN tag 10 frames received by the port with the service VLAN tag 100.
admin@XorPlus# set vlans vlan-id 100 admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching native-vlan-id 100 admin@XorPlus# set vlans dot1q-tunneling ingress t1 from untag enabled true admin@XorPlus# set vlans dot1q-tunneling ingress t1 then customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling ingress t1 then service-vlan 100 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling ingress t1 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling ingress t2 from one-tag customer-vlan-list 10 admin@XorPlus# set vlans dot1q-tunneling ingress t2 then service-vlan 100 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling ingress t2 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t3 from customer-vlan 10 admin@XorPlus# set vlans dot1q-tunneling egress t3 from service-vlan 100 admin@XorPlus# set vlans dot1q-tunneling egress t3 then action one admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling egress t3 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t4 from customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling egress t4 from service-vlan 100 admin@XorPlus# set vlans dot1q-tunneling egress t4 then action none admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling egress t4 admin@XorPlus# set interface gigabit-ethernet ge-1/1/1 family ethernet-switching dot1q-tunneling mode internal admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# run show interface gigabit-ethernet ge-1/1/1 dot1q-tunneling Dot1q Tunneling Mode: internal, Ether Type: 0x8100 Ingress: t1 Untagged-type Enabled: true One-tagged-type Customer Vlan: Double-tagged-type Service Vlan: 0 New Service Vlan: 100 New Customer Vlan: 30 Ingress: t2 Untagged-type Enabled: false One-tagged-type Customer Vlan: 10 Double-tagged-type Service Vlan: 0 New Service Vlan: 100 New Customer Vlan: 0 Egress: t3 Service Vlan: 100 Customer Vlan: 10 Action: Retain the customer vlan tag Egress: t4 Service Vlan: 100 Customer Vlan: 30 Action: Strip both tags admin@XorPlus#
Configure VLAN 200 as the default VLAN of Gigabit Ethernet ge-1/1/2, and enable the Q-in-Q tunneling internal mode on Gigabit Ethernet 1/1/2.
Then, configure the untagged frames received by the port with the customer VLAN tag 30 and service VLAN tag 200.
Finally, configure the customer VLAN tag 20 frames received by the port with the service VLAN Tag 200.
admin@XorPlus# set vlans vlan-id 200 admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching native-vlan-id 200 admin@XorPlus# set vlans dot1q-tunneling ingress t5 from untag enabled true admin@XorPlus# set vlans dot1q-tunneling ingress t5 then customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling ingress t5 then service-vlan 200 admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling ingress t5 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling ingress t6 from one-tag customer-vlan-list 20 admin@XorPlus# set vlans dot1q-tunneling ingress t6 then service-vlan 200 admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling ingress t6 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t7 from customer-vlan 20 admin@XorPlus# set vlans dot1q-tunneling egress t7 from service-vlan 200 admin@XorPlus# set vlans dot1q-tunneling egress t7 then action one admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling egress t7 admin@XorPlus# commit admin@XorPlus# set vlans dot1q-tunneling egress t8 from customer-vlan 30 admin@XorPlus# set vlans dot1q-tunneling egress t8 from service-vlan 200 admin@XorPlus# set vlans dot1q-tunneling egress t8 then action none admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling egress t8 admin@XorPlus# set interface gigabit-ethernet ge-1/1/2 family ethernet-switching dot1q-tunneling mode internal admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# run show interface gigabit-ethernet ge-1/1/2 dot1q-tunneling Dot1q Tunneling Mode: internal, Ether Type: 0x8100 Ingress: t5 Untagged-type Enabled: true One-tagged-type Customer Vlan: Double-tagged-type Service Vlan: 0 New Service Vlan: 200 New Customer Vlan: 30 Ingress: t6 Untagged-type Enabled: false One-tagged-type Customer Vlan: 20 Double-tagged-type Service Vlan: 0 New Service Vlan: 200 New Customer Vlan: 0 Egress: t7 Service Vlan: 200 Customer Vlan: 20 Action: Retain the customer vlan tag Egress: t8 Service Vlan: 200 Customer Vlan: 30 Action: Strip both tags admin@XorPlus#
Configure VLAN 100/200 as the trunk port of Gigabit Ethernet te-1/1/49, and enable the Q-in-Q tunneling internal mode.
admin@XorPlus# set interface gigabit-ethernet te-1/1/49 family ethernet-switching port-mode trunk admin@XorPlus# set interface gigabit-ethernet te-1/1/49 family ethernet-switching vlan members 100 admin@XorPlus# set interface gigabit-ethernet te-1/1/49 family ethernet-switching vlan members 200 admin@XorPlus# set interface gigabit-ethernet te-1/1/49 family ethernet-switching dot1q-tunneling modeinternal admin@XorPlus# commit Commit OK. Save done. admin@XorPlus# run show interface gigabit-ethernet te-1/1/49 dot1q-tunneling Dot1q Tunneling Mode: internal, Ether Type: 0x8100 admin@XorPlus#
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