H3C S6850 Series

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Configuring VLAN mapping
About VLAN mapping
VLAN mapping re-marks VLAN traffic with new VLAN IDs.
VLAN mapping types
H3C provides the following types of VLAN mapping:
• One-to-one VLAN mapping—Replaces one VLAN tag with another.
• Many-to-one VLAN mapping—Replaces multiple VLAN tags with the same VLAN tag.
• 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.
VLAN mapping application scenarios
One-to-one and many-to-one VLAN mapping
One-to-one and many-to-one VLAN mapping are typically used by a community for broadband
Internet access, as shown in Figure 1.