Huawei quidway s7700 - Page 269

When Switch1 and Switch2 add different VLAN tags to packets, configure VLAN mapping of
double tags on a sub-interface and connect the sub-interface to the VLL. Then CE1 and CE2
can communicate with each other.
When a switch is connected to multiple CEs, the switch can add different VLAN tags to the
packets from different CEs, that is, packets with different VLAN tags. This saves VLAN IDs
on the public network.
Figure 5-9 Networking diagram for configuring a Martini VLL
CE1
CE2
PE1
PE2
P
Loopback1
1.1.1.9/32
Loopback1
2.2.2.9/32
Loopback1
3.3.3.9/32
GE2/0/0
GE1/0/0
GE2/0/0
GE1/0/0
GE1/0/0
GE2/0/0
GE1/0/0
GE1/0/0
GE2/0/0
GE1/0/0
GE2/0/0
GE1/0/0
Switch2
Switch1
Switch Interface VLANIF interface IP address
PE1 GigabitEthernet1/0/0 GigabitEthernet1/0/0.1 -
GigabitEthernet2/0/0 VLANIF 20 10.1.1.1/24
Loopback1 - 1.1.1.9/32
PE2 GigabitEthernet1/0/0 VLANIF 30 10.2.2.1/24
GigabitEthernet2/0/0 GigabitEthernet2/0/0.1 -
Loopback1 - 3.3.3.9/32
P GigabitEthernet1/0/0 VLANIF 30 10.2.2.2/24
GigabitEthernet2/0/0 VLANIF 20 10.1.1.2/24
Loopback1 - 2.2.2.9/32
CE1 GigabitEthernet1/0/0 VLANIF 10 100.1.1.1/24
CE2 GigabitEthernet1/0/0 VLANIF 10 100.1.1.2/24
Configuration Roadmap
The configuration roadmap is as follows:
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 5 QinQ Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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