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DES-7200 Configuration Guide Chapter 12 QinQ Configuration
12-31
Step 3: Verify the mapping rule for adding Tag on the basis of C-Tag. Key points:
whether the mapping between inner VLAN tag and outer VLAN tag is correct.
DES-7200#show registration-table
Ports Outer-VID Inner-VID-list
------ ---------- --------------
Gi0/1 101 101-200
Gi0/1 201 201-300
Gi0/2 101 101-200
Gi0/2 201 201-300
12.3.3 ACL-based flexible
QinQ to distinguish
traffic
12.3.3.1 Topological diagram
The following figure shows the networking diagram for ACL-based flexible QinQ
deployed on the metropolitan area network. The service provider provides
broadband access and IPTV services to users. There are many out-of-date and
low-end network access devices on user's network, making it impossible to
effectively distinguish traffic according to VLAN ID. All types of services are
carried in the same VLAN.
Figure 10 ACL-based flexible QinQ to realize Internet access service
12.3.3.2 Application requirements
Broadband Internet and IPTV traffic of downstream users shall be identified by
protocol, so as to apply different QoS service policies to different traffic.