5.12.12 Example for Connecting QinQ Sub-interfaces to a VPLS
Network
Networking Requirements
As shown in Figure 5-12, VPLS is enabled on PE1 and PE2. CE1 is connected to Switch1
through PE1, and CE2 is connected to Switch2 through PE2. CE1 and CE2 belong to the same
VSI. LDP is used as the VPLS signaling protocol to set up the PW and Martini VPLS is
configured to enable CE1 and CE2 to communicate with each other.
It is required that you configure selective QinQ on the interfaces connected to CEs so that the
switches add the VLAN tags specified by the carrier to the packets sent from CEs.
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 5-12 Networking diagram for configuring Martini VPLS
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 20 168.1.1.1/24
Loopback1 - 1.1.1.9/32
PE2 GigabitEthernet1/0/0 VLANIF 30 169.1.1.2/24
GigabitEthernet2/0/0 GigabitEthernet2/0/0.1 -
Loopback1 - 3.3.3.9/32
P GigabitEthernet1/0/0 VLANIF 20 168.1.1.2/24
GigabitEthernet2/0/0 VLANIF 30 169.1.1.1/24
Loopback1 - 2.2.2.9/32
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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