3Com Switch 4800G 24-Port Configuration Manual page 139

# Configure the port to tag frames from VLAN 20 with an outer tag with the
VLAN ID of 2000.
[ProviderA-GigabitEthernet1/0/1] qinq vid 2000
[ProviderA-GigabitEthernet1/0/1-vid-2000] raw-vlan-id inbound 20
[ProviderA-GigabitEthernet1/0/1-vid-2000] quit
[ProviderA-GigabitEthernet1/0/1] quit
Configuration on GigabitEthernet 1/0/2
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# Configure VLAN 1000 as the default VLAN of the port.
[ProviderA] interface GigabitEthernet 1/0/2
[ProviderA-GigabitEthernet1/0/2] port access vlan 1000
# Enable basic QinQ so that the port tags frames from VLAN 10 with an outer tag
with the VLAN ID of 1000.
[ProviderA-GigabitEthernet1/0/2] qinq enable
[ProviderA-GigabitEthernet1/0/2] quit
Configuration on GigabitEthernet 1/0/3.
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# Configure GigabitEthernet 1/0/3 as a trunk port, and permit frames of VLAN
1000 and VLAN 2000 to pass.
[ProviderA] interface GigabitEthernet 1/0/3
[ProviderA-GigabitEthernet1/0/3] port link-type trunk
[ProviderA-GigabitEthernet1/0/3] port trunk permit vlan 1000 2000
# To enable interoperability with the third-party devices in the public network, set
the TPID value to be carried in VLAN Tags to 0x8200.
[ProviderA-GigabitEthernet1/0/3] quit
[ProviderA] qinq ethernet-type service-tag 8200
2 Configuration on Provider B
Configuration on GigabitEthernet 1/0/1
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# Configure GigabitEthernet 1/0/1 as a trunk port, and permit frames of VLAN
1000 and VLAN 2000.
<ProviderB> system-view
[ProviderB] interface GigabitEthernet 1/0/1
[ProviderB-GigabitEthernet1/0/1] port link-type trunk
[ProviderB-GigabitEthernet1/0/1] port trunk permit vlan 1000 2000
# To enable interoperability with the third-party devices in the public network, set
the TPID value to be carried in VLAN Tags to 0x8200.
[ProviderB-GigabitEthernet1/0/1] quit
[ProviderB] qinq ethernet-type service-tag 8200
Configuration on GigabitEthernet 1/0/2
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# Configure VLAN 2000 as the default VLAN of the port.
QinQ Configuration Example 139