Application scenario of one-to-one and many-to-one VLAN mapping
Figure 69 shows a typical application scenario in which each home gateway uses different VLANs to transmit the PC, VoD, and VoIP services.
Figure 69: Application scenario of one-to-one and many-to-one VLAN mapping
To further sub-classify each type of traffic by customer, perform one-to-one VLAN mapping on the wiring-closet switches, and assign a separate VLAN for each type of traffic from each customer. The required total number of VLANs in the network can be large. To prevent the maximum number of VLANs from being exceeded on the distribution layer device, perform many-to-one VLAN mapping on the campus switch to assign the same type of traffic from different customers to the same VLAN.