3Com Switch 7750 Configuration Guide Guide

158 CHAPTER 19: SELECTIVE QINQ CONFIGURATION
c
CAUTION:
■ You need to execute the vlan-vpn enable command on the inbound ports
before performing the operations listed in
Table 91.
■ QinQ is not applicable to ports with the Voice VLAN feature enabled.
c
CAUTION:
■ Type-A I/O Modules do not support the selective QinQ feature. Type A I/O
Modules include: 3C16860, 3C16861, 3C16858, 3C16859, 3C16857,
3C16857R, and 3C16872.
■ The 3C16863 and 3C16862 I/O Modules do not support the QinQ feature.
Selective QinQ
Configuration
Example
Network Requirements ■ Switch A is a Switch 7750.
■ Enable QinQ on GigabitEthernet1/0/1 port. Set the PVID of the port to 8.
■ Insert the tag of VLAN 10 to packets of VLAN 8 through VLAN 15 as the outer
VLAN tag. Insert the tag of VLAN 100 to packets of VLAN 20 through VLAN 25
as the outer VLAN tag.
■ GigabitEthernet2/0/1 is the upstream port of the outer VLAN tag. It is required
that the outer tags of packets of VLAN 10 and VLAN 100 are kept while the
outer tags of packets of other VLANs are removed.
Network Diagram Figure 43 Network diagram for selective QinQ configuration
Configure the outer VLAN tag
to be added to a packet and
configure the upstream port
for this packet
vlan-vpn vid vlan-id uplink
interface-type
interface-number [ unTagged
]
Required
Specify the inner VLAN tags
by specifying VLAN IDs
raw-vlan-id inbound
vlan-id-list
Required
Table 91 Configure selective QinQ
Operation Command Description
Selective
QinQ
GE0/1/1
VLAN 8 through15 VLAN 20 through 25
VLAN 10
VLAN 100
Selective
QinQ
GE0/1/1
Selective
QinQ
GE0/1/1
VLAN 8 through15 VLAN 20 through 25
VLAN 10
VLAN 100