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NE40E-M2 V800R010C10SPC500 Feature Description - LAN Access and MAN Access 01

This is NE40E-M2 V800R010C10SPC500 Feature Description - LAN Access and MAN Access
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Layer 2 Selective QinQ

Layer 2 Selective QinQ

Layer 2 selective QinQ is an extension of QinQ tunneling but is more flexible. The major difference is as follows:

  • QinQ tunneling adds the same outer tag to the frames that enter a QinQ interface.

  • Layer 2 selective QinQ adds distinctive outer tags to the frames that enter a QinQ interface according to inner tags.

On the network shown in Figure 7-4, Company 1 and Company 2 have more than one branch.

  • VLAN 2 to VLAN 500 are used on the networks of Company 1.

  • VLAN 501 to VLAN 4094 are used on the networks of Company 2.

  • Interface 1 on PE1 both receives packets from VLANs of Company 1 and Company 2.

Figure 7-4 Layer 2 selective QinQ

To allow branches to communicate within Company 1 or Company 2 but not between the two companies, configure Layer 2 selective QinQ on PE1 and PE2.

  • Table 7-2 shows the planning of outer VLAN tags in the packets entering different interfaces on PE1 and PE2.

    Table 7-2 Outer VLAN tag planning on PE1 and PE2

    Device Name

    Interface Name

    VLAN ID Range

    Outer VLAN ID

    PE1

    Interface 1

    2 to 500

    10

    Interface 1

    1000 to 2000

    20

    Interface 2

    100 to 500

    10

    PE2

    Interface 1

    1000 to 4094

    20

    Interface 2

    501 to 2500

    20

  • Interface 3 on PE1 or PE2 allows the packets tagged with VLAN 20 to pass.

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Updated: 2019-01-02

Document ID: EDOC1100058405

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