H3C S5830V2 series, Руководство по настройке

Страница: 226 / 318

209
Figure 57 Basic VLAN mapping concepts
One-to-one VLAN mapping
In Figure 58 , one-to-one VLAN mapping is implemented on the customer-side port and replaces VLAN
tags as follows:
•
Replaces the CVLAN with the SVLAN for the uplink traffic.
•
Replaces the SVLAN with the CVLAN for the downlink traffic.
Figure 58 One-to-one VLAN mapping implementation
Many-to-one VLAN mapping
In Figure 59 , many-to-one VLAN mapping is implemented on both the customer-side and network-side
ports as follows:
•
For the uplink traffic, the customer-side many-to-one VLAN mapping replaces multiple CVLANs with
the same SVLAN.
• For the downlink traffic, the network-side many-to-one VLAN mapping replaces the SVLAN with the
CVLAN found in the DHCP snooping table or ARP snooping table. For more information about
DHCP snooping and ARP snooping, see Layer 3—IP Services Configuration Guide .
SP
Network-side port
Customer-side port
Uplink traffic
Downlink traffic