VLAN transparent transmission configuration example

As shown in Figure 57:

• The service provider assigns VLAN 100 to a company's VLANs 10 through 50.

• VLAN 3000 is the dedicated VLAN of the company on the service provider network.

Configure QinQ on PE 1 and PE 2 to provide Layer 2 connectivity for CVLANs 10 through 50 over the service provider network.

Configure VLAN transparent transmission for VLAN 3000 on PE 1 and PE 2 to enable the hosts in VLAN 3000 to communicate without using an SVLAN.

1. Configure PE 1:

   # Configure Ten-GigabitEthernet 1/0/1 as a trunk port, and assign it to VLANs 10 through 50, 100, and 3000.

   <PE1> system-view
   [PE1] interface ten-gigabitethernet 1/0/1
   [PE1-Ten-GigabitEthernet1/0/1] port link-type trunk
   [PE1-Ten-GigabitEthernet1/0/1] port trunk permit vlan 100 3000 10 to 50
   

   # Configure VLAN 100 as the PVID of Ten-GigabitEthernet 1/0/1.

   [PE1-Ten-GigabitEthernet1/0/1] port trunk pvid vlan 100
   

   # Enable QinQ on Ten-GigabitEthernet 1/0/1.

   [PE1-Ten-GigabitEthernet1/0/1] qinq enable
   

   # Configure Ten-GigabitEthernet 1/0/1 to transparently transmit frames from VLAN 3000.

   [PE1-Ten-GigabitEthernet1/0/1] qinq transparent-vlan 3000
   [PE1-Ten-GigabitEthernet1/0/1] quit
   

   # Configure Ten-GigabitEthernet 1/0/2 as a trunk port, and assign it to VLANs 100 and 3000.

   [PE1] interface ten-gigabitethernet 1/0/2
   [PE1-Ten-GigabitEthernet1/0/2] port link-type trunk
   [PE1-Ten-GigabitEthernet1/0/2] port trunk permit vlan 100 3000
   [PE1-Ten-GigabitEthernet1/0/2] quit
   

2. Configure PE 2:

   # Configure Ten-GigabitEthernet 1/0/1 as a trunk port, and assign it to VLANs 10 through 50, 100, and 3000.

   <PE2> system-view
   [PE2] interface ten-gigabitethernet 1/0/1
   [PE2-Ten-GigabitEthernet1/0/1] port link-type trunk
   [PE2-Ten-GigabitEthernet1/0/1] port trunk permit vlan 100 3000 10 to 50
   

   # Configure VLAN 100 as the PVID of Ten-GigabitEthernet 1/0/1.

   [PE1-Ten-GigabitEthernet1/0/1] port trunk pvid vlan 100
   

   # Enable QinQ on Ten-GigabitEthernet 1/0/1.

   [PE2-Ten-GigabitEthernet1/0/1] qinq enable
   

   # Configure Ten-GigabitEthernet 1/0/1 to transparently transmit frames from VLAN 3000.

   [PE2-Ten-GigabitEthernet1/0/1] qinq transparent-vlan 3000
   [PE2-Ten-GigabitEthernet1/0/1] quit
   

   # Configure Ten-GigabitEthernet 1/0/2 as a trunk port, and assign it to VLANs 100 and 3000.

   [PE2] interface ten-gigabitethernet 1/0/2
   [PE2-Ten-GigabitEthernet1/0/2] port link-type trunk
   [PE2-Ten-GigabitEthernet1/0/2] port trunk permit vlan 100 3000
   

3. Configure the devices between PE 1 and PE 2:

   # Set the MTU to a minimum of 1504 bytes for each port on the path of QinQ frames. (Details not shown.)

   # Configure all the ports on the forwarding path to allow frames from VLANs 100 and 3000 to pass through without removing the VLAN tag. (Details not shown.)