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AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009 CLI-based Configuration Guide - Ethernet Switching

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Application Scenarios for QinQ

Application Scenarios for QinQ

This section describes the applicable environment of QinQ.

Basic QinQ

As shown in Figure 8-5, enterprise A has two branches that connect to the carrier network through PE1 and PE2 respectively. Enterprise A has different services, so different VLANs are assigned. To save public VLAN IDs, it is required that traffic between two branches of enterprise A be transparently transmitted through the public network, users using the same service in different branches of enterprise A be allowed to communicate, and users using different services be isolated. You can configure QinQ on the network-side interface of the CE to meet the preceding requirements.

Figure 8-5  Typical networking of basic QinQ

Selective QinQ

As shown in Figure 8-6, enterprise A has two branches that connect to the carrier network through PE1 and PE2 respectively. Enterprise A has different services, so different VLANs are assigned. Data services are transmitted in VLAN 10 to VLAN 30, and voice services are transmitted in VLAN 31 to VLAN 50. To save public VLAN IDs, it is required that traffic between two branches of enterprise A be transparently transmitted through the public network, users using the same service in different branches of enterprise A be allowed to communicate, users using different services be isolated, and voice services be transmitted preferentially. You can configure selective QinQ on the user-side interface of the CE to meet the preceding requirements.

Figure 8-6  Typical networking of selective QinQ
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Updated: 2019-05-17

Document ID: EDOC1000174108

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