3Com Switch 7750 Configuration Guide Guide

Displaying QinQ 153
n
The Voice VLAN feature is mutually exclusive with the QinQ feature for a port.
■ When you use the specific command to enable the Voice VLAN feature for a
QinQ-enabled port, the switch will prompt errors.
■ If you use the copy configuration command to duplicate the configuration of
a port to a QinQ-enabled port, the Voice VLAN feature is not duplicated.
c
CAUTION: The 3C16863 and 3C16862 I/O Modules do not support the QinQ
feature.
Displaying QinQ After the configuration above, you can verify QinQ configuration by executing the
display command in any view.
QinQ Configuration
Example
Network requirements
■ Switch A, Switch B, and Switch C are Switch 7750 Family switches.
■ Two networks are connected to the Ethernet1/0/1 ports of Switch A and Switch
C.
■ Switch B only permits the packets of VLAN 10.
■ It is required that packets of the VLANs other than VLAN 10 be exchanged
between the networks connected to Switch A and Switch C.
Network diagram
Figure 42 Network diagram for QinQ configuration
Table 90 Display QinQ configuration
Operation Command Description
Display the QinQ
configuration of all the ports
display port vlan-vpn
This command can be
executed in any view.
Switch A
Switch C
Switch B
E1/0/1 (access VLAN 10, VLAN VPN port)
E1/0/2 (trunk permit VLAN 10)
E1/0/2 (trunk permit VLAN 10)
E1/0/1 (access VLAN 10, VLAN VPN port
)
Switch A
Switch C
Switch B
E3/1/1 (trunk permit VLAN 10)
E3/1/2 (trunk permit VLAN 10)
Switch A
Switch C
Switch B
E1/0/1 (access VLAN 10, VLAN VPN port)
E1/0/2 (trunk permit VLAN 10)
E1/0/2 (trunk permit VLAN 10)
E1/0/1 (access VLAN 10, VLAN VPN port
)
Switch A
Switch C
Switch B
E3/1/1 (trunk permit VLAN 10)
E3/1/2 (trunk permit VLAN 10)
Switch A
Switch C
Switch B
E1/0/1 (access VLAN 10, VLAN VPN port)
E1/0/2 (trunk permit VLAN 10)
E1/0/2 (trunk permit VLAN 10)
E1/0/1 (access VLAN 10, VLAN VPN port
)
Switch A
Switch C
Switch B
E3/1/1 (trunk permit VLAN 10)
E3/1/2 (trunk permit VLAN 10)
Switch A
Switch C
Switch B
E1/0/1 (access VLAN 10, VLAN VPN port)
E1/0/2 (trunk permit VLAN 10)
E1/0/2 (trunk permit VLAN 10)
E1/0/1 (access VLAN 10, VLAN VPN port
)
Switch A
Switch C
Switch B
E3/1/1 (trunk permit VLAN 10)
E3/1/2 (trunk permit VLAN 10)