H3C S7500X Series Configuration Manual page 188

Figure 1 Application scenario of one-to-one and many-to-one VLAN mapping
DHCP client
PC
VoD
VoIP
PC
VoD
VoIP
PC
VoD
VoIP
PC
VoD
VoIP
As shown in
•
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.
One-to-two and two-to-two VLAN mapping
Figure 2 shows a typical application scenario of one-to-two and two-to-two VLAN mapping. In this
scenario, the two remote sites of the same VPN must communicate across two SP networks.
VLAN 1
Home gateway
VLAN 2
VLAN 3
Wiring-closet
switch
VLAN 1
VLAN 2
Home gateway
VLAN 3
VLAN 1
Home gateway
VLAN 2
VLAN 3
Wiring-closet
switch
VLAN 1
VLAN 2
Home gateway
VLAN 3
Figure 1, the network is implemented as follows:
VLAN 1 -> VLAN 101
VLAN 2 -> VLAN 201
VLAN 3 -> VLAN 301
VLAN 1 -> VLAN 102
VLAN 2 -> VLAN 202
VLAN 3 -> VLAN 302
VLANs 101 and 102 -> VLAN 501
VLANs 201 and 202 -> VLAN 502
VLANs 301 and 302 -> VLAN 503
Campus switch
VLANs 199 and 200 -> VLAN 501
VLANs 299 and 300 -> VLAN 502
VLANs 399 and 400 -> VLAN 503
VLAN 1 -> VLAN 199
VLAN 2 -> VLAN 299
VLAN 3 -> VLAN 399
VLAN 1 -> VLAN 200
VLAN 2 -> VLAN 300
VLAN 3 -> VLAN 400
2
DHCP server
Distribution
network