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Contents
Configuring QinQ ············································································· 1
About QinQ ······························································································································ 1
QinQ benefits ····················································································································· 1
How QinQ works ················································································································· 1
QinQ implementations ·········································································································· 2
Protocols and standards ······································································································· 3
Restrictions and guidelines: QinQ configuration ················································································ 3
Enabling QinQ ··························································································································· 3
Configuring transmission for transparent VLANs ··············································································· 4
Configuring the TPID for VLAN tags ······························································································· 5
About TPID ························································································································ 5
Restrictions and guidelines ···································································································· 5
Configuring the TPID for CVLAN tags ······················································································ 6
Configuring the TPID for SVLAN tags ······················································································ 6
Setting the 802.1p priority in SVLAN tags ························································································ 6
About the 802.1p priority in SVLAN tags ··················································································· 6
Prerequisites for setting the 802.1p priority in SVLAN tags ··························································· 6
Tasks at a glance ················································································································ 7
Creating a traffic class and configuring CVLAN match criteria ······················································· 7
Creating a traffic behavior and configuring a priority marking action for SVLAN tags ·························· 7
Creating a QoS policy ·········································································································· 7
Applying the QoS policy ········································································································ 8
Display and maintenance commands for QinQ ················································································· 8
QinQ configuration examples ········································································································ 8
Example: Configuring basic QinQ ··························································································· 8
Example: Configuring VLAN transparent transmission ······························································· 10