Application scenario of one-to-one and many-to-one VLAN mapping
Figure 58 shows a typical application scenario of one-to-one and many-to-one VLAN mapping. The scenario implements broadband Internet access for a community.
Figure 58: Application scenario of one-to-one and many-to-one VLAN mapping
As shown in Figure 58, the network is implemented as follows:
Each home gateway uses different VLANs to transmit the PC, VoD, and VoIP services.
To further subclassify each type of traffic by customer, configure one-to-one VLAN mapping on the wiring-closet switches. This feature assigns a separate VLAN to each type of traffic from each customer. The required total number of VLANs in the network can be very large.
To prevent the maximum number of VLANs from being exceeded on the distribution layer device, configure many-to-one VLAN mapping on the campus switch. This feature assigns the same VLAN to the same type of traffic from different customers.