H3C Technologies H3C S12500-X Series Switches - Manual (Page 150)

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Configuring VLAN mapping
Overview
VLAN mapping re-marks VLAN tagged traffic with new VLAN IDs. H3C provides the following types of
VLAN mapping:
• One-to-one VLAN mapping—Replaces one VLAN tag with another.
• One-to-two VLAN mapping—Tags single-tagged packets with an outer VLAN tag.
• Two-to-two VLAN mapping—Replaces the outer and inner VLAN IDs of double tagged traffic with
a new pair of VLAN IDs.
Application scenario of one-to-one VLAN mapping
Figure 40 shows a typical application scenario of one-to-one VLAN mapping. The scenario implements
broadband Internet access for a community.