One-To-One Vlan Mapping And Many-To-One Vlan Mapping - H3C LS-3100-52P-OVS-H3 Operation 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
One-to-one VLAN mapping and many-to-one VLAN mapping are mainly applied in networking
environments as shown in Figure 1-1. In such a network, different VLANs are used for transmitting
different services (PC, IPTV, 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.
1-2