3Com S7906E Configuration Manual page 201

1 QinQ Configuration ···································································································································1-1
Introduction to QinQ ································································································································1-1
Background and Benefits ················································································································1-1
How QinQ Works·····························································································································1-2
QinQ Frame Structure ·····················································································································1-2
Implementations of QinQ·················································································································1-3
Modification of the TPID Value in VLAN Tags·················································································1-3
Configuring Outer VLAN Tag Priority ······························································································1-5
Protocols and Standards ·················································································································1-5
Configuring Basic QinQ ··························································································································1-5
Enabling Basic QinQ ·······················································································································1-5
Configuring VLAN Transparent Transmission·················································································1-6
Configuring Selective QinQ·····················································································································1-7
Configuring the TPID of a VLAN Tag······································································································1-8
Configure Outer VLAN Tag Priority·········································································································1-9
QinQ Configuration Example ················································································································1-10
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