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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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Compatibility of EtherTypes in QinQ Tags

Compatibility of EtherTypes in QinQ Tags

As shown in Figure 7-5, an IEEE 802.1Q tag lies between the Source Address field and the Length/Type field. The default EtherType value in the 2–byte Tag Protocol Identifier (TPID) is 0x8100. If the EtherType value of a packet is 0x8100, the packet is tagged. The EtherType value in a QinQ packet varies with the settings of device manufactures. Huawei devices use the default value 0x8100 while some non-Huawei devices use 0x9100 as the EtherType value. To implement interworking between Huawei devices and non-Huawei devices, you need to configure compatibility of EtherTypes in inner and outer tags of QinQ packets sent by the devices of different vendors.

Figure 7-5 802.1Q encapsulation

In Figure 7-6, Device A is a non-Huawei device that uses 0x9100 as the EtherType value, and Device B is a Huawei device which uses 0x8000 as the EtherType value. To implement interworking between the Huawei and the non-Huawei devices, configure 0x9100 as the EtherType value in the outer VLAN tag of QinQ packets sent by the Huawei device.

Figure 7-6 Compatibility of EtherTypes in QinQ tags

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Updated: 2019-01-02

Document ID: EDOC1100058405

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