Operation Manual – VLAN-VPNH3C S3100 Series Ethernet Switches Chapter 2 Selective QinQ Configuration2-1Chapter 2 Selective QinQ ConfigurationNote:This chapter is only applicable to S3100-EI series switches.When configuring selective QinQ, go to these sections for information you areinterested in:z Selective QinQ Overviewz Selective QinQ Configurationz Selective QinQ Configuration Example2.1 Selective QinQ Overview2.1.1 Selective QinQ OverviewSelective QinQ is an enhanced application of the VLAN-VPN feature. With the selectiveQinQ feature, you can configure inner-to-outer VLAN tag mapping, according to whichyou can add different outer VLAN tags to the packets with different inner VLAN tags.The selective QinQ feature makes the service provider network structure more flexible.You can classify the terminal users on the port connecting to the access layer deviceaccording to their VLAN tags, and add different outer VLAN tags to these users. In thepublic network, you can configure QoS policies based on outer VLAN tags to assigndifferent priorities to different packets, thus providing differentiated services. See Figure2-1 for details.
