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QinQ Configuration
This chapter describes how to configure 802.1Q-in-802.1Q (QinQ).
- Introduction to QinQ
- Principles
- Applications
- Configuration Task Summary
- Licensing Requirements and Limitations for QinQ
- Configuring Basic QinQ
Basic QinQ enables the device to add a public tag to incoming packets so that user packets can be forwarded on the public network. - Configuring Selective QinQ
Selective QinQ is implemented based on interfaces and VLAN IDs. - Configuring the TPID Value in an Outer VLAN Tag
To enable interoperation between devices from different vendors, set the same TPID value in outer VLAN tags on the devices. - Configuring the Device to Add Double VLAN Tags to Untagged
Packets
You can configure one device to add double VLAN tags to untagged packets. - Configuring QinQ Mapping
VLAN mapping maps C-VLAN tags to S-VLAN tags to shield different C-VLAN tags. - Maintaining QinQ
- Configuration Examples
- Common Misconfigurations
- FAQ