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DES-7200 Configuration Guide Chapter 12 QinQ Configuration
12-27
Step 2: Verify the QinQ configuration of respective ports again. Key points are
the same as Step 1.
DES-7200#show interfaces dot1q-tunnel
========Interface Gi0/1========
Native vlan: 10
Allowed vlan list:1,10,
Tagged vlan list:
========Interface Gi0/2========
Native vlan: 20
Allowed vlan list:1,20,
Tagged vlan list:
Step 3: Verify the TPID configuration. Key point: whether the interface is Uplink
port, TPID value.
DES-7200#show frame-tag tpid
Ports Tpid
------- -------------
Gi0/5 0x9100
Steps to verify configurations on Provider B are the same as those on Provider
A. Please refer to the verification steps on Provider A given above.
12.3.2 C-Tag based flexible
QinQ to distinguish
traffic
12.3.2.1 Topological diagram
The following figure shows the networking diagram of metropolitan area
network for C-Tag based flexible QinQ to classify the traffic. Broadband Internet
and IPTV are all important services carried on the metropolitan area network.
As shown below, client devices converge at the corridor switch, and broadband
Internet and IPTV traffic will be classified by assigning different VLANs.
Broadband Internet users fall within VLAN 101-200, while IPTV users fall within
VLAN 201-300.