R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Configuration Guide

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Configuring VLAN mapping
Overview
VLAN mapping re-marks VLAN tagged traffic with new VLAN IDs. HP provides the following types of
VLAN mapping:
• One-to-one VLAN mapping—Replaces one VLAN tag with another. You can use one-to-one VLAN
mapping to sub-classify traffic from a particular VLAN for granular QoS control.
• One-to-two VLAN mapping—Tags single-tagged packets with an outer VLAN tag. One-to-two
VLAN mapping expands the VLAN tag space, and enables a service provider and its customers to
assign VLANs independently without the risk of VLAN assignment conflicts.
• Two-to-two VLAN mapping—Replaces the outer and inner VLAN IDs of double tagged traffic with
a new pair of VLAN IDs. You can use two-to-two VLAN mapping to enable two remote sites in
different VLANs to communicate at Layer 2 across two service provider networks that use different
VLAN assignment schemes.
Application scenario of one-to-one VLAN mapping
Figure 33 shows a typical application scenario of one-to-one VLAN mapping. The scenario implements
broadband Internet access for a community.