viPrivate VLAN configuration examples ······················································································································· 165Private VLAN configuration example in promiscuous mode ·········································································· 165Private VLAN configuration example in trunk promiscuous mode ································································· 168Private VLAN configuration example in trunk promiscuous and trunk secondary modes ··························· 171Secondary VLAN Layer 3 communication configuration example ································································ 175Configuring MVRP ·················································································································································· 178MRP ··············································································································································································· 178MRP implementation ··········································································································································· 178MRP messages ····················································································································································· 179MRP timers···························································································································································· 180MVRP registration modes ············································································································································ 180Protocols and standards ·············································································································································· 181MVRP configuration task list ········································································································································ 181Configuration restrictions and guidelines ·················································································································· 181Configuration prerequisites ········································································································································· 182Enabling MVRP ····························································································································································· 182Configuring an MVRP registration mode ··················································································································· 182Configuring MRP timers ··············································································································································· 183Enabling GVRP compatibility ······································································································································ 184Displaying and maintaining MVRP ···························································································································· 184MVRP configuration example ····································································································································· 185Network requirements ········································································································································· 185Configuration procedure ···································································································································· 185Verifying the configuration ································································································································· 189Configuring QinQ ··················································································································································· 195Overview······································································································································································· 195How QinQ works ················································································································································ 195QinQ implementations ········································································································································ 196Protocols and standards ····································································································································· 196Restrictions and guidelines ·········································································································································· 197Enabling QinQ ····························································································································································· 197Configuring transparent transmission for VLANs ······································································································ 197Configuring the TPID in VLAN tags ···························································································································· 198Configuring the CVLAN TPID ····························································································································· 199Configuring the SVLAN TPID······························································································································ 199Setting the 802.1p priority in SVLAN tags ··············································································································· 199Displaying and maintaining QinQ ···························································································································· 201QinQ configuration example······································································································································ 201Network requirements ········································································································································· 201Configuration procedure ···································································································································· 202VLAN transparent transmission configuration example ··························································································· 204Network requirements ········································································································································· 204Configuration procedure ···································································································································· 204Configuring VLAN mapping ·································································································································· 206Overview······································································································································································· 206Application scenario of one-to-one and many-to-one VLAN mapping ·························································· 206Application scenario of one-to-two and two-to-two VLAN mapping ······························································ 208VLAN mapping implementations ······················································································································· 208General configuration restrictions and guidelines ···································································································· 211VLAN mapping configuration task list ······················································································································· 211Configuring one-to-one VLAN mapping ···················································································································· 212Configuring many-to-one VLAN mapping ················································································································· 213Configuring many-to-one VLAN mapping in a network with dynamic IP address assignment ··················· 213