User manual

Chapter 28 VLAN Mapping
GS2210 Series User’s Guide
260
CHAPTER 28
VLAN Mapping
This chapter shows you how to configure VLAN mapping on the Switch.
28.1 VLAN Mapping Overview
With VLAN mapping enabled, the Switch can map the VLAN ID and priority level of packets
received from a private network to those used in the service provider’s network.
The Switch checks incoming traffic from the switch ports (non-management ports) against the
VLAN mapping table first, the MAC learning table and then the VLAN table before forwarding
them through the uplink port. If the incoming packets are untagged, the Switch adds a PVID
based on the VLAN setting.
28.1.1 VLAN Mapping Example
In the following example figure, packets that carry VLAN ID 12 and are received on port 3
match a pre-configured VLAN mapping rule. The Switch translates the VLAN ID from 12 into
123 before forwarding the packets.
Figure 191 VLAN mapping example