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Figure 56 Application scenario of many-to-one VLAN mapping
Concepts and terms
Figure 57 shows a simplified network to help explain the concepts and terms that you might
encounter when you work with VLAN mapping.
Figure 57 Basic concepts of VLAN mapping
• Uplink traffic—Traffic transmitted from the customer network to the service provider network.
• Downlink traffic—Traffic transmitted from the service provider network to the customer
network.
• Network-side port—A port connected to or closer to the service provider network.
• Customer-side port—A port connected to or closer to the customer network.
• Uplink policy—A QoS policy that defines VLAN mapping rules for uplink traffic.
• Downlink policy—A QoS policy that defines VLAN mapping rules for downlink traffic.
• Customer VLANs (CVLANs)—VLANs assigned for customers.
• Service provider VLANs (SVLANs)—VLANs assigned for transmitting traffic across the
service provider network.
For more information about QoS policies, see ACL and QoS Configuration Guide.
SP
Network-side port
Customer-side port
Uplink traffic
Downlink traffic
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