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Figure 61 Basic VLAN mapping terms
One-to-one VLAN mapping
As shown in
, one-to-one VLAN mapping is implemented on the customer-side port and
replaces VLAN tags as follows:
•
Replaces the CVLAN with the SVLAN for the uplink traffic.
•
Replaces the SVLAN with the CVLAN for the downlink traffic.
Figure 62 One-to-one VLAN mapping implementation
Many-to-one VLAN mapping
As shown in
, many-to-one VLAN mapping is implemented on both the customer-side and
network-side ports as follows:
•
For the uplink traffic, the customer-side many-to-one VLAN mapping replaces multiple CVLANs
with the same SVLAN.
•
For the downlink traffic, the network-side many-to-one VLAN mapping replaces the SVLAN with
the CVLAN found in the DHCP snooping table or ARP snooping table. For more information
about DHCP snooping or ARP snooping, see
Layer 3—IP Services Configuration Guide
.
SP
Network-side port
Customer-side port
Uplink traffic
Downlink traffic
