One-To-One Vlan Mapping And Many-To-One Vlan Mapping - HP 4800G Series Configuration Manual

One-to-One VLAN Mapping and Many-to-One VLAN Mapping

Figure 1-1 Scenario for one-to-one/many-to-one VLAN mapping
DHCP client
VLAN 1
PC
VLAN 2
VoD
VoIP
VLAN 3
VLAN 1
PC
VLAN 2
VoD
VoIP
VLAN 3
VLAN 1
PC
VLAN 2
VoD
VoIP
VLAN 3
VLAN 1
PC
VLAN 2
VoD
VoIP
VLAN 3
One-to-one VLAN mapping and many-to-one VLAN mapping are mainly applied in networking
environments as shown in
different services (PC, VoD, and VoIP for example) of a home user. Furthermore, to differentiate home
users that are using the same service, you need to perform one-to-one VLAN mapping to map the
service traffic to different VLANs by user on the corridor switches. However, an access device on the
distribution layer is likely unable to support the number of VLANs required for this type of VLAN
mapping.
To reduce the number of VLANs required on the edge device at the distribution layer, you can adopt
many-to-one VLAN mapping. This type of VLAN mapping maps the VLANs carrying the same service of
different users to the same VLAN while isolating the service traffic of different users.
Home gateway
VLAN 1-> VLAN 101
VLAN 2-> VLAN 201
VLAN 3-> VLAN 301
Corridor switch
VLAN 1-> VLAN 102
VLAN 2-> VLAN 202
VLAN 3-> VLAN 302
Home gateway
VLAN 101~200-> VLAN 501
VLAN 201~300-> VLAN 502
VLAN 301~400-> VLAN 503
Campus switch
VLAN 111~210-> VLAN 501
VLAN 211~310-> VLAN 502
VLAN 311~410-> VLAN 503
Home gateway
VLAN 1-> VLAN 111
VLAN 2-> VLAN 211
VLAN 3-> VLAN 311
Corridor switch
VLAN 1-> VLAN 112
VLAN 2-> VLAN 212
VLAN 3-> VLAN 312
Home gateway
Figure 1-1. In such a network, different VLANs are used for transmitting
1-2
Distribution
network
DHCP server